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1. Comparative genomics reveals high biological diversity and specific adaptations in the industrially and medically important fungal genus Aspergillus

Author

de Vries, Ronald P, Riley, Robert, Wiebenga, Ad, Aguilar-Osorio, Guillermo, Amillis, Sotiris, Uchima, Cristiane Akemi, Anderluh, Gregor, Asadollahi, Mojtaba, Askin, Marion, Barry, Kerrie, Battaglia, Evy, Bayram, Özgür, Benocci, Tiziano, Braus-Stromeyer, Susanna A, Caldana, Camila, Cánovas, David, Cerqueira, Gustavo C, Chen, Fusheng, Chen, Wanping, Choi, Cindy, Clum, Alicia, dos Santos, Renato Augusto Corrêa, Damásio, André Ricardo de Lima, Diallinas, George, Emri, Tamás, Fekete, Erzsébet, Flipphi, Michel, Freyberg, Susanne, Gallo, Antonia, Gournas, Christos, Habgood, Rob, Hainaut, Matthieu, Harispe, María Laura, Henrissat, Bernard, Hildén, Kristiina S, Hope, Ryan, Hossain, Abeer, Karabika, Eugenia, Karaffa, Levente, Karányi, Zsolt, Kraševec, Nada, Kuo, Alan, Kusch, Harald, LaButti, Kurt, Lagendijk, Ellen L, Lapidus, Alla, Levasseur, Anthony, Lindquist, Erika, Lipzen, Anna, Logrieco, Antonio F, MacCabe, Andrew, Mäkelä, Miia R, Malavazi, Iran, Melin, Petter, Meyer, Vera, Mielnichuk, Natalia, Miskei, Márton, Molnár, Ákos P, Mulé, Giuseppina, Ngan, Chew Yee, Orejas, Margarita, Orosz, Erzsébet, Ouedraogo, Jean Paul, Overkamp, Karin M, Park, Hee-Soo, Perrone, Giancarlo, Piumi, Francois, Punt, Peter J, Ram, Arthur FJ, Ramón, Ana, Rauscher, Stefan, Record, Eric, Riaño-Pachón, Diego Mauricio, Robert, Vincent, Röhrig, Julian, Ruller, Roberto, Salamov, Asaf, Salih, Nadhira S, Samson, Rob A, Sándor, Erzsébet, Sanguinetti, Manuel, Schütze, Tabea, Sepčić, Kristina, Shelest, Ekaterina, Sherlock, Gavin, Sophianopoulou, Vicky, Squina, Fabio M, Sun, Hui, Susca, Antonia, Todd, Richard B, Tsang, Adrian, Unkles, Shiela E, van de Wiele, Nathalie, van Rossen-Uffink, Diana, Oliveira, Juliana Velasco de Castro, Vesth, Tammi C, Visser, Jaap, Yu, Jae-Hyuk, Zhou, Miaomiao, and Andersen, Mikael R

Subjects
Human Genome, Genetics, Biotechnology, Emerging Infectious Diseases, Infectious Diseases, Adaptation, Biological, Aspergillus, Biodiversity, Biomass, Carbon, Computational Biology, Cytochrome P-450 Enzyme System, DNA Methylation, Fungal Proteins, Gene Expression Regulation, Fungal, Gene Regulatory Networks, Genome, Fungal, Genomics, Humans, Metabolic Networks and Pathways, Molecular Sequence Annotation, Multigene Family, Oxidoreductases, Phylogeny, Plants, Secondary Metabolism, Signal Transduction, Stress, Physiological, Genome sequencing, Comparative genomics, Fungal biology, Environmental Sciences, Biological Sciences, Information and Computing Sciences, Bioinformatics
Abstract

BackgroundThe fungal genus Aspergillus is of critical importance to humankind. Species include those with industrial applications, important pathogens of humans, animals and crops, a source of potent carcinogenic contaminants of food, and an important genetic model. The genome sequences of eight aspergilli have already been explored to investigate aspects of fungal biology, raising questions about evolution and specialization within this genus.ResultsWe have generated genome sequences for ten novel, highly diverse Aspergillus species and compared these in detail to sister and more distant genera. Comparative studies of key aspects of fungal biology, including primary and secondary metabolism, stress response, biomass degradation, and signal transduction, revealed both conservation and diversity among the species. Observed genomic differences were validated with experimental studies. This revealed several highlights, such as the potential for sex in asexual species, organic acid production genes being a key feature of black aspergilli, alternative approaches for degrading plant biomass, and indications for the genetic basis of stress response. A genome-wide phylogenetic analysis demonstrated in detail the relationship of the newly genome sequenced species with other aspergilli.ConclusionsMany aspects of biological differences between fungal species cannot be explained by current knowledge obtained from genome sequences. The comparative genomics and experimental study, presented here, allows for the first time a genus-wide view of the biological diversity of the aspergilli and in many, but not all, cases linked genome differences to phenotype. Insights gained could be exploited for biotechnological and medical applications of fungi.

Published
2017

7. Metabolic engineering of glycerol production in Saccharomyces cerevisiae

Author

Overkamp, Karin M., Bakker, Barbara M., Kotter, Peter, Luttik, Marijke A. H., Dijken, Johannes P. van, and Pronk, Jack T.

Subjects
Microbiological research -- Analysis, Brewer's yeast -- Physiological aspects, Glycerol -- Physiological aspects, Metabolism -- Physiological aspects, Biological sciences
Abstract

Research has been conducted on the glycerol production by Saccharomyces cerevisiae. The use of the metabolic engineering of mitochondrial respiration in improvement of glycerol production by S. cerevisiae is discussed.

Published
2002

8. In vivo analysis of the mechanisms for oxidation of cytosolic NADH by Saccharomyces cerevisiae mitochondria

Author

Overkamp, Karin M., Bakker, Barbara M., Kotter, Peter, Tuijl, Arjen van, Vries, Simon de, Dijken, Johannes P. van, and Pronk, Jack T.

Subjects
Respiration -- Regulation, Saccharomyces -- Physiological aspects, NAD (Coenzyme) -- Research, Mitochondria -- Physiological aspects, Oxidation, Physiological -- Analysis, Biological sciences
Abstract

Results demonstrate two mechanisms for reoxidizing cytosolic NADH in Saccharomyces cerevisiae mitochondria. Data indicate that cytosolic ethanol is oxidized intramitochodrially and a redox shutle links the cytosolic NADH oxidation to the internal NADH dehydrogenase.

Published
2000

9. Limonene-1,2-epoxide hydrolase from Rhodococcus erythropolis DCL14 belongs to a novel class of epoxide hydrolases

Author

Werf, Mariet J. van der, Overkamp, Karin M., and Bont, Jan A.M. de

Subjects
Microbial enzymes -- Research, Biological sciences
Abstract

An epoxide hydrolase from Rhodococcus erythropolis DCL14 has been found to catalyze the hydrolysis of limonene-1,2-epoxide to limonene-1,2-diol. Limonene-1,2-epoxide hydrolase was purified to homogeneity and characterized. Results showed that the enzyme is a member of a new type of epoxide hydrolases. Observations which served as basis for the conclusion include its low molecular mass, the absence of any significant homology between its partial amino acid sequence and the amino acid sequences of known epoxide hydrolases, and its pH profile.

Published
1998

10. Microbial production host selection for converting second-generation feedstocks into bioproducts

Author

van Groenestijn Johan W, Overkamp Karin M, van Buijsen Hugo JJ, Rumbold Karl, Punt Peter J, and Werf Mariët

Subjects
Microbiology, QR1-502
Abstract

Abstract Background Increasingly lignocellulosic biomass hydrolysates are used as the feedstock for industrial fermentations. These biomass hydrolysates are complex mixtures of different fermentable sugars, but also inhibitors and salts that affect the performance of the microbial production host. The performance of six industrially relevant microorganisms, i.e. two bacteria (Escherichia coli and Corynebacterium glutamicum), two yeasts (Saccharomyces cerevisiae and Pichia stipitis) and two fungi (Aspergillus niger and Trichoderma reesei) were compared for their (i) ability to utilize monosaccharides present in lignocellulosic hydrolysates, (ii) resistance against inhibitors present in lignocellulosic hydrolysates, (iii) their ability to utilize and grow on different feedstock hydrolysates (corn stover, wheat straw, sugar cane bagasse and willow wood). The feedstock hydrolysates were generated in two manners: (i) thermal pretreatment under mild acid conditions followed by enzymatic hydrolysis and (ii) a non-enzymatic method in which the lignocellulosic biomass is pretreated and hydrolyzed by concentrated sulfuric acid. Moreover, the ability of the selected hosts to utilize waste glycerol from the biodiesel industry was evaluated. Results Large differences in the performance of the six tested microbial production hosts were observed. Carbon source versatility and inhibitor resistance were the major discriminators between the performances of these microorganisms. Surprisingly all 6 organisms performed relatively well on pretreated crude feedstocks. P. stipitis and A. niger were found to give the overall best performance C. glutamicum and S. cerevisiae were shown to be the least adapted to renewable feedstocks. Conclusion Based on the results obtained we conclude that a substrate oriented instead of the more commonly used product oriented approach towards the selection of a microbial production host will avoid the requirement for extensive metabolic engineering. Instead of introducing multiple substrate utilization and detoxification routes to efficiently utilize lignocellulosic hydrolysates only one biosynthesis route forming the product of interest has to be engineered.

Published
2009
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13. Comparative genomics reveals high biological diversity and specific adaptations in the industrially and medically important fungal genus Aspergillus

Author

Vries, Ronald P. de, Riley, Robert, Wiebenga, Ad, Aguilar-Osorio, Guillermo, Amillis, Sotiris, Akemi Uchima, Cristiane, Anderluh, Gregor, Asaollahi, Mojtaba, Askin, Marion, Barry, Kerrie, Battaglia, Evy, Bayram, Ozgur, Benocci, Tiziano, Braus-Stromeyer, Susanna A., Caldana, Camila, Cerqueira, Gustavo C., Chen, Fusheng, Chen, Wanping, Choi, Cindy, Clum, Alicia, Diallinas, George, Flipphi, Michel, Freyburg, Susanne, Gallo, Antonia, Gournas, Christos, Habgood, Rob, Hainaut, Matthieu, Harispe, Maria Laura, Henrissat, Bernard, Hope, Ryan, Hossain, Abeer, Karabika, Eugenia, Karaffa, Levente, Karanyi, Zsolt, Krasevec, Nada, Kuo, Alan, Kusch, Harald, LaButti, Kurt, Lagendijk, Ellen L., Lapidus, Alla, Levasseur, Anthony, Lindquist, Erika, Lipzen, Anna, Logrieco, Antonio F., MacCabe, Andrew, Malavazi, Iran, Melin, Petter, Meyer, Vera, Mielnichuk, Natalia, Ngan, Chew Yee, Orejas, Margarita, Ouedraogo, Jean Paul, Overkamp, Karin M., Park, Hee-Soo, Perrone, Giancarlo, Piumi, Francois, Punt, Peter J., Ram, Arthur F.J., Ramon, Ana, Rauscher, Stefan, Record, Eric, Robert, Vincent, Ruller, Roberto, Salamov, Asaf, Salih, Nadhira S., Samson, Rob A., Sanguinetti, Manuel, Sep?i?, Kristina, Shelest, Ekaterina, Sherlock, Gavin, Sophianopoulou, Vicky, Squina, Fabio M., Sun, Hui, Susca, Antonia, Todd, Richard B., Tsang, Adrian, Unkles, Shiela E., Wiele, Nathalie van de, Rossen-Uffink, Diana van, Velasco de Castro Oliveira, Juliana, Vesth, Tammi C., Visser, Jaap, Yu, Jae-Hyuk, Zhou, Miaomiao, Andersen, Mikael R., Archer, David B., Baker, Scott E., Benoit, Isabelle, Brakhage, Axel A., Braus, Gerhard H., Fischer, Reinhard, Frisvad, Jens C., Goldman, Gustavo H., Houbraken, Jos, Oakley, Berl, Scazzocchio, Claudio, Seiboth, Bernhard, vanKuyk, Patricia A., Wortman, Jennifer, Dyer, Paul S., and Grigoriev, Igor V.

Subjects
Genome sequencing, Comparative genomics, Fungal biology
Abstract

Background: The fungal genus Aspergillus is of critical importance to humankind. Species include those with industrial applications, important pathogens of humans, animals and crops, a source of potent carcinogenic contaminants of food, and an important genetic model. The genome sequences of eight aspergilli have already been explored to investigate aspects of fungal biology, raising questions about evolution and specialization within this genus. Results: We have generated genome sequences for ten novel, highly diverse Aspergillus species and compared these in detail to sister and more distant genera. Comparative studies of key aspects of fungal biology, including primary and secondary metabolism, stress response, biomass degradation, and signal transduction, revealed both conservation and diversity among the species. Observed genomic differences were validated with experimental studies. This revealed several highlights, such as the potential for sex in asexual species, organic acid production genes being a key feature of black aspergilli, alternative approaches for degrading plant biomass, and indications for the genetic basis of stress response. A genome-wide phylogenetic analysis demonstrated in detail the relationship of the newly genome sequenced species with other aspergilli. Conclusions: Many aspects of biological differences between fungal species cannot be explained by current knowledge obtained from genome sequences. The comparative genomics and experimental study, presented here, allows for the first time a genus-wide view of the biological diversity of the aspergilli and in many, but not all, cases linked genome differences to phenotype. Insights gained could be exploited for biotechnological and medical applications of fungi.

Published
2017

14. Comparative genomics reveals high biological diversity and specific adaptations in the industrially and medically important fungal genus Aspergillus

Author

de Vries, Ronald P., Riley, Robert, Wiebenga, Ad, Aguilar-Osorio, Guillermo, Amillis, Sotiris, Uchima, Cristiane Akemi, Anderluh, Gregor, Asadollahi, Mojtaba, Askin, Marion, Barry, Kerrie W, Battaglia, Evy, Bayram, Ozgur, Benocci, Tiziano, Braus-Stromeyer, Susanna A., Caldana, Camila, Canovas, David, Cerqueira, Gustavo C., Chen, Fusheng, Chen, Wanping, Choi, Cindy, Clum, Alicia, Correa dos Santos, Renato Augusto, de Lima Damasio, Andre Ricardo, Diallinas, George, Emri, Tamas, Fekete, Erzsebet, Flipphi, Michel, Freyberg, Susanne, Gallo, Antonia, Gournas, Christos, Habgood, Rob, Hainaut, Matthieu, Laura Harispe, Maria, Henrissat, Bernard, Hilden, Kristiina S., Hope, Ryan, Hossain, Abeer, Karabika, Eugenia, Karaffa, Levente, Karanyi, Zsolt, Krasevec, Nada, Kuo, Alan, Kusch, Harald, LaButti, Kurt M, Lagendijk, Ellen L., Lapidus, Alla, Levasseur, Anthony, Lindquist, Erika A, Lipzen, Anna M, Logrieco, Antonio F., Maccabe, Andrew, Makela, Miia R., Malavazi, Iran, Melin, Petter, Meyer, Vera, Mielnichuk, Natalia, Miskei, Marton, Molnar, Akos P., Mule, Giuseppina, Ngan, Chew Yee, Orejas, Margarita, Orosz, Erzsebet, Ouedraogo, Jean Paul, Overkamp, Karin M, Park, Hee-Soo, Perrone, Giancarlo, Piumi, Francois, Punt, Peter J, Ram, Arthur F J, Ramon, Ana, Rauscher, Stefan, Record, Eric, Riano-Pachon, Diego Mauricio, Robert, Vincent, Roehrig, Julian, Ruller, Roberto, Salamov, Asaf, Salih, Nadhira S., Samson, Rob A., Sandor, Erzsebet, Sanguinetti, Manuel, Schutze, Tabea, Sepcic, Kristina, Shelest, Ekaterina, Sherlock, Gavin, Sophianopoulou, Vicky, Squina, FabioM., Sun, Hui, Susca, Antonia, Todd, Richard B, Tsang, Adrian, Unkles, Shiela E., van de Wiele, Nathalie, van Rossen-Uffink, Diana, de Castro Oliveira, Juliana Velasco, Vesth, Tammi C., Visser, Jaap, Yu, Jae-Hyuk, Zhou, Miaomiao, Andersen, Mikael R, Archer, David B., Baker, Scott E, Benoit, Isabelle, Brakhage, Axel A, Braus, Gerhard H., Fischer, Reinhard, Frisvad, Jens C., Goldman, Gustavo H., Houbraken, Jos, Oakley, Berl R, Pocsi, Istvan, Scazzocchio, Claudio, Seiboth, Bernhard, vanKuyk, Patricia A, Wortman, Jennifer Russo, Dyer, Paul S, Grigoriev, Igor V, de Vries, Ronald P., Riley, Robert, Wiebenga, Ad, Aguilar-Osorio, Guillermo, Amillis, Sotiris, Uchima, Cristiane Akemi, Anderluh, Gregor, Asadollahi, Mojtaba, Askin, Marion, Barry, Kerrie W, Battaglia, Evy, Bayram, Ozgur, Benocci, Tiziano, Braus-Stromeyer, Susanna A., Caldana, Camila, Canovas, David, Cerqueira, Gustavo C., Chen, Fusheng, Chen, Wanping, Choi, Cindy, Clum, Alicia, Correa dos Santos, Renato Augusto, de Lima Damasio, Andre Ricardo, Diallinas, George, Emri, Tamas, Fekete, Erzsebet, Flipphi, Michel, Freyberg, Susanne, Gallo, Antonia, Gournas, Christos, Habgood, Rob, Hainaut, Matthieu, Laura Harispe, Maria, Henrissat, Bernard, Hilden, Kristiina S., Hope, Ryan, Hossain, Abeer, Karabika, Eugenia, Karaffa, Levente, Karanyi, Zsolt, Krasevec, Nada, Kuo, Alan, Kusch, Harald, LaButti, Kurt M, Lagendijk, Ellen L., Lapidus, Alla, Levasseur, Anthony, Lindquist, Erika A, Lipzen, Anna M, Logrieco, Antonio F., Maccabe, Andrew, Makela, Miia R., Malavazi, Iran, Melin, Petter, Meyer, Vera, Mielnichuk, Natalia, Miskei, Marton, Molnar, Akos P., Mule, Giuseppina, Ngan, Chew Yee, Orejas, Margarita, Orosz, Erzsebet, Ouedraogo, Jean Paul, Overkamp, Karin M, Park, Hee-Soo, Perrone, Giancarlo, Piumi, Francois, Punt, Peter J, Ram, Arthur F J, Ramon, Ana, Rauscher, Stefan, Record, Eric, Riano-Pachon, Diego Mauricio, Robert, Vincent, Roehrig, Julian, Ruller, Roberto, Salamov, Asaf, Salih, Nadhira S., Samson, Rob A., Sandor, Erzsebet, Sanguinetti, Manuel, Schutze, Tabea, Sepcic, Kristina, Shelest, Ekaterina, Sherlock, Gavin, Sophianopoulou, Vicky, Squina, FabioM., Sun, Hui, Susca, Antonia, Todd, Richard B, Tsang, Adrian, Unkles, Shiela E., van de Wiele, Nathalie, van Rossen-Uffink, Diana, de Castro Oliveira, Juliana Velasco, Vesth, Tammi C., Visser, Jaap, Yu, Jae-Hyuk, Zhou, Miaomiao, Andersen, Mikael R, Archer, David B., Baker, Scott E, Benoit, Isabelle, Brakhage, Axel A, Braus, Gerhard H., Fischer, Reinhard, Frisvad, Jens C., Goldman, Gustavo H., Houbraken, Jos, Oakley, Berl R, Pocsi, Istvan, Scazzocchio, Claudio, Seiboth, Bernhard, vanKuyk, Patricia A, Wortman, Jennifer Russo, Dyer, Paul S, and Grigoriev, Igor V

Published
2017

15. Comparative genomics reveals high biological diversity and specific adaptations in the industrially and medically important fungal genus Aspergillus

Author

de Vries, Ronald, Riley, Robert, Wiebenga, Ad, Aguilar-Osorio, Guillermo, Amillis, Sotiris, Akemi Uchima, Cristiane, Anderluh, Gregor, Asadollahi, Mojtaba, Askin, Marion, Barry, Kerrie, Battaglia, Evy, Bayram, Ozgur, Benocci, Tiziano, Braus-Stromeyer, Susanna A., Caldana, Camila, Canovas, David, Cerqueira, Gustavo C., Chen, Fusheng, Chen, Wanping, Choi, Cindy, Clum, Alicia, Correa dos Santos, Renato Augusto, de Lima Damasio, Andre Ricardo, Diallinas, George, Emri, Tamas, Fekete, Erzsebet, Flipphi, Michel, Freyberg, Susanne, Gallo, Antonia, Gournas, Christos, Habgood, Rob, Hainaut, Matthieu, Harispe, Maria Laura, Henrissat, Bernard, Hilden, Kristiina S., Hope, Ryan, Hossain, Abeer, Karabika, Eugenia, Karaffa, Levente, Karanyi, Zsolt, Krasevec, Nada, Kuo, Alan, Kusch, Harald, LaButti, Kurt, Lagendijk, Ellen L., Lapidus, Alla, Levasseur, Anthony, Lindquist, Erika, Lipzen, Anna, Logrieco, Antonio F., MacCabe, Andrew, Makela, Miia R., Malavazi, Iran, Melin, Petter, Meyer, Vera, Mielnichuk, Natalia, Miskei, Marton, Molnar, Akos P., Mule, Giuseppina, Ngan, Chew Yee, Orejas, Margarita, Orosz, Erzsebet, Ouedraogo, Jean Paul, Overkamp, Karin M., Park, Hee-Soo, Perrone, Giancarlo, Piumi, Francois, Punt, Peter J., Ram, Arthur F.J., Ramon, Ana, Rauscher, Stefan, Record, Eric, Riano-Pachon, Diego Mauricio, Robert, Vincent, Rohrig, Julian, Ruller, Roberto, Salamov, Asaf, Salih, Nadhira S., Samson, Rob A., Sandor, Erzsebet, Sanguinetti, Manuel, Schutze, Tabea, Sepcic, Kristina, Shelest, Ekaterina, Sherlock, Gavin, Sophianopoulou, Vicky, Squina, Fabio M., Sun, Hui, Susca, Antonia, Todd, Richard B., Tsang, Adrian, Unkles, Sheila E., van de Wiele, Nathalie, van Rossen-Uffink, Diana, Velasco de Castro Oliveria, Juliana, Vesth, Tammi C., Visser, Jaap, Yu, Jae-Hyuk, Zhou, Miamiao, Andersen, Mikael R., Archer, David B., Baker, Scott E., Benoit, Isabelle, Brakhage, Axel A., Braus, Gerhard H., Fischer, Reinhard, Frisvad, Jens C., Goldman, Gustavo H., Houbraken, Jos, Oakley, Berl, Pocsi, Istvan, Scazzocchio, Claudio, Seiboth, Bernhard, vanKuyk, Patricia A., Wortman, Jennifer, Dyer, Paul S., Grigoriev, Igor V., de Vries, Ronald, Riley, Robert, Wiebenga, Ad, Aguilar-Osorio, Guillermo, Amillis, Sotiris, Akemi Uchima, Cristiane, Anderluh, Gregor, Asadollahi, Mojtaba, Askin, Marion, Barry, Kerrie, Battaglia, Evy, Bayram, Ozgur, Benocci, Tiziano, Braus-Stromeyer, Susanna A., Caldana, Camila, Canovas, David, Cerqueira, Gustavo C., Chen, Fusheng, Chen, Wanping, Choi, Cindy, Clum, Alicia, Correa dos Santos, Renato Augusto, de Lima Damasio, Andre Ricardo, Diallinas, George, Emri, Tamas, Fekete, Erzsebet, Flipphi, Michel, Freyberg, Susanne, Gallo, Antonia, Gournas, Christos, Habgood, Rob, Hainaut, Matthieu, Harispe, Maria Laura, Henrissat, Bernard, Hilden, Kristiina S., Hope, Ryan, Hossain, Abeer, Karabika, Eugenia, Karaffa, Levente, Karanyi, Zsolt, Krasevec, Nada, Kuo, Alan, Kusch, Harald, LaButti, Kurt, Lagendijk, Ellen L., Lapidus, Alla, Levasseur, Anthony, Lindquist, Erika, Lipzen, Anna, Logrieco, Antonio F., MacCabe, Andrew, Makela, Miia R., Malavazi, Iran, Melin, Petter, Meyer, Vera, Mielnichuk, Natalia, Miskei, Marton, Molnar, Akos P., Mule, Giuseppina, Ngan, Chew Yee, Orejas, Margarita, Orosz, Erzsebet, Ouedraogo, Jean Paul, Overkamp, Karin M., Park, Hee-Soo, Perrone, Giancarlo, Piumi, Francois, Punt, Peter J., Ram, Arthur F.J., Ramon, Ana, Rauscher, Stefan, Record, Eric, Riano-Pachon, Diego Mauricio, Robert, Vincent, Rohrig, Julian, Ruller, Roberto, Salamov, Asaf, Salih, Nadhira S., Samson, Rob A., Sandor, Erzsebet, Sanguinetti, Manuel, Schutze, Tabea, Sepcic, Kristina, Shelest, Ekaterina, Sherlock, Gavin, Sophianopoulou, Vicky, Squina, Fabio M., Sun, Hui, Susca, Antonia, Todd, Richard B., Tsang, Adrian, Unkles, Sheila E., van de Wiele, Nathalie, van Rossen-Uffink, Diana, Velasco de Castro Oliveria, Juliana, Vesth, Tammi C., Visser, Jaap, Yu, Jae-Hyuk, Zhou, Miamiao, Andersen, Mikael R., Archer, David B., Baker, Scott E., Benoit, Isabelle, Brakhage, Axel A., Braus, Gerhard H., Fischer, Reinhard, Frisvad, Jens C., Goldman, Gustavo H., Houbraken, Jos, Oakley, Berl, Pocsi, Istvan, Scazzocchio, Claudio, Seiboth, Bernhard, vanKuyk, Patricia A., Wortman, Jennifer, Dyer, Paul S., and Grigoriev, Igor V.

Abstract

Background The fungal genus Aspergillus is of critical importance to humankind. Species include those with industrial applications, important pathogens of humans, animals and crops, a source of potent carcinogenic contaminants of food, and an important genetic model. The genome sequences of eight aspergilli have already been explored to investigate aspects of fungal biology, raising questions about evolution and specialization within this genus. Results We have generated genome sequences for ten novel, highly diverse Aspergillus species and compared these in detail to sister and more distant genera. Comparative studies of key aspects of fungal biology, including primary and secondary metabolism, stress response, biomass degradation, and signal transduction, revealed both conservation and diversity among the species. Observed genomic differences were validated with experimental studies. This revealed several highlights, such as the potential for sex in asexual species, organic acid production genes being a key feature of black aspergilli, alternative approaches for degrading plant biomass, and indications for the genetic basis of stress response. A genome-wide phylogenetic analysis demonstrated in detail the relationship of the newly genome sequenced species with other aspergilli. Conclusions Many aspects of biological differences between fungal species cannot be explained by current knowledge obtained from genome sequences. The comparative genomics and experimental study, presented here, allows for the first time a genus-wide view of the biological diversity of the aspergilli and in many, but not all, cases linked genome differences to phenotype. Insights gained could be exploited for biotechnological and medical applications of fungi.

Published
2017

16. Aspergillus niger RhaR, a regulator involved in L-rhamnose release and catabolism

Author

Sub Membrane Biochemistry & Biophysics, Sub Molecular Plant Physiology, Membrane Biochemistry and Biophysics, Gruben, Birgit S., Zhou, Miaomiao, Wiebenga, Ad, Ballering, Joost, Overkamp, Karin M., Punt, Peter J., De Vries, Ronald P., Sub Membrane Biochemistry & Biophysics, Sub Molecular Plant Physiology, Membrane Biochemistry and Biophysics, Gruben, Birgit S., Zhou, Miaomiao, Wiebenga, Ad, Ballering, Joost, Overkamp, Karin M., Punt, Peter J., and De Vries, Ronald P.

Published
2014

17. Aspergillus niger RhaR, a regulator involved in L-rhamnose release and catabolism

Author

Gruben, Birgit S, Zhou, M., Wiebenga, A., Ballering, Joost, Overkamp, Karin M, Punt, Peter J, de Vries, Ronald P, van den Brink, J., Gruben, Birgit S, Zhou, M., Wiebenga, A., Ballering, Joost, Overkamp, Karin M, Punt, Peter J, de Vries, Ronald P, and van den Brink, J.

Abstract

The genome of the filamentous fungus Aspergillus niger is rich in genes encoding pectinases, a broad class of enzymes that have been extensively studied due to their use in industrial applications. The sequencing of the A. niger genome provided more knowledge concerning the individual pectinolytic genes, but little is known about the regulatory genes involved in pectin degradation. Understanding regulation of the pectinolytic genes provides a tool to optimize the production of pectinases in this industrially important fungus. This study describes the identification and characterization of one of the activators of pectinase-encoding genes, RhaR. Inactivation of the gene encoding this regulator resulted in down-regulation of genes involved in the release of L-rhamnose from the pectin substructure rhamnogalacturonan I, as well as catabolism of this monosaccharide. The rhaR disruptant was unable to grow on L-rhamnose, but only a small reduction in growth on pectin was observed. This is likely caused by the presence of a second, so far unknown regulator that responds to the presence of D-galacturonic acid.

Published
2014

19. Microbial renewable feedstock utilization

Author

Rumbold, Karl, primary, van Buijsen, Hugo J. J., additional, Gray, Vincent M., additional, van Groenestijn, Johan W., additional, Overkamp, Karin M., additional, Slomp, Ronald S., additional, van der Werf, Mariët J., additional, and Punt, Peter J., additional

Published
2010
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28. Identifying inhibitory compounds in lignocellulosic biomass hydrolysates using an exometabolomics approach.

Author

Ying Zha, Westerhuis, Johan A., Muilwijk, Bas, Overkamp, Karin M., Nijmeijer, Bernadien M., Coulier, Leon, Smilde, Age K., and Punt, Peter J.

Abstract

Background: Inhibitors are formed that reduce the fermentation performance of fermenting yeast during the pretreatment process of lignocellulosic biomass. An exometabolomics approach was applied to systematically identify inhibitors in lignocellulosic biomass hydrolysates. Results: We studied the composition and fermentability of 24 different biomass hydrolysates. To create diversity, the 24 hydrolysates were prepared from six different biomass types, namely sugar cane bagasse, corn stover, wheat straw, barley straw, willow wood chips and oak sawdust, and with four different pretreatment methods, i.e. dilute acid, mild alkaline, alkaline/peracetic acid and concentrated acid. Their composition and that of fermentation samples generated with these hydrolysates were analyzed with two GC-MS methods. Either ethyl acetate extraction or ethyl chloroformate derivatization was used before conducting GC-MS to prevent sugars are overloaded in the chromatograms, which obscure the detection of less abundant compounds. Using multivariate PLS-2CV and nPLS-2CV data analysis models, potential inhibitors were identified through establishing relationship between fermentability and composition of the hydrolysates. These identified compounds were tested for their effects on the growth of the model yeast, Saccharomyces. cerevisiae CEN.PK 113-7D, confirming that the majority of the identified compounds were indeed inhibitors. Conclusion: Inhibitory compounds in lignocellulosic biomass hydrolysates were successfully identified using a non-targeted systematic approach: metabolomics. The identified inhibitors include both known ones, such as furfural, HMF and vanillin, and novel inhibitors, namely sorbic acid and phenylacetaldehyde. [ABSTRACT FROM AUTHOR]

Published
2014
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31. Two mechanisms for oxidation of cytosolic NADPH by <TOGGLE>Kluyveromyces lactis</TOGGLE> mitochondria

Author

Overkamp, Karin M., Bakker, Barbara M., Steensma, H. Y., Dijken, Johannes P. van, and Pronk, Jack T.

Abstract

Null mutations in the structural gene encoding phosphoglucose isomerase completely abolish activity of this glycolytic enzyme in Kluyveromyces lactis and Saccharomyces cerevisiae. In S. cerevisiae, the pgi1 null mutation abolishes growth on glucose, whereas K.lactis rag2 null mutants still grow on glucose. It has been proposed that, in the latter case, growth on glucose is made possible by an ability of K. lactis mitochondria to oxidize cytosolic NADPH. This would allow for a re-routing of glucose dissimilation via the pentose-phosphate pathway. Consistent with this hypothesis, mitochondria of S. cerevisiae cannot oxidize NADPH. In the present study, the ability of K. lactis mitochondria tooxidize cytosolic NADPH was experimentally investigated. Respiration-competent mitochondria were isolated from aerobic, glucose-limited chemostat cultures of the wild-type K. lactis strain CBS 2359 and from an isogenic rag2Δ strain. Oxygen-uptake experiments confirmed the presence of a mitochondrial NADPH dehydrogenase in K.lactis. This activity was ca. 2.5-fold higher in the rag2Δ mutant than in the wild-type strain. In contrast to mitochondria from wild-type K. lactis, mitochondria from the rag2Δ mutant exhibited high rates of ethanol-dependent oxygen uptake. Subcellular fractionation studies demonstrated that, in the rag2Δ mutant, a mitochondrial alcohol dehydrogenase was present and that activity of a cytosolic NADPH-dependent ‘acetaldehyde reductase’ was also increased. These observations indicate that two mechanisms may participate inmitochondrial oxidation of cytosolic NADPH by K. lactis mitochondria: (a) direct oxidation of cytosolic NADPH by a mitochondrial NADPH dehydrogenase; and (b) a two-compartment transhydrogenase cycle involving NADP+- and NAD+-dependent alcohol dehydrogenases. Copyright © 2002 John Wiley & Sons, Ltd.

Published
2002
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32. Functional analysis of structural genes for NAD+‐dependent formate dehydrogenase in Saccharomyces cerevisiae

Author

Overkamp, Karin M., Kötter, Peter, van der Hoek, Richard, Schoondermark‐Stolk, Sung, Luttik, Marijke A. H., van Dijken, Johannes P., and Pronk, Jack T.

Abstract

Co‐consumption of formate by aerobic, glucose‐limited chemostat cultures of Saccharomyces cerevisiaeCEN.PK 113‐7D led to an increased biomass yield relative to cultures grown on glucose as the sole carbon and energy substrate. In this respect, this strain differed from two previously investigated S. cerevisiaestrains, in which formate oxidation did not lead to an increased biomass yield on glucose. Enzyme assays confirmed the presence of a formate‐inducible, cytosolic and NAD+‐dependent formate dehydrogenase. To investigate whether this enzyme activity was entirely encoded by the previously reported FDH1gene, an fdh1Δnull mutant was constructed. This mutant strain still contained formate dehydrogenase activity and remained capable of co‐consumption of formate. The formate dehydrogenase activity in the mutant was demonstrated to be encoded by a second structural gene for formate dehydrogenase (FDH2) in S. cerevisiaeCEN.PK 113‐7D. FDH2was highly homologous to FDH1and consisted of a fusion of two open reading frames (ORFs) (YPL275wand YPL276w) reported in the S. cerevisiaegenome databases. Sequence analysis confirmed that, in the database genetic background, the presence of two single‐nucleotide differences led to two truncated ORFs rather than the full‐length FDH2gene present in strain CEN.PK 113‐7D. In the latter strain background an fdh1Δfdh2Δdouble mutant lacked formate dehydrogenase activity and was unable to co‐consume formate. Absence of formate dehydrogenase activity did not affect growth on glucose as sole carbon source, but led to a reduced biomass yield on glucose–formate mixtures. These findings are consistent with a role of formate dehydrogenase in the detoxification of exogenous formate. Copyright © 2002 John Wiley & Sons, Ltd.

Published
2002
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33. The Saccharomyces cerevisiae NDE1and NDE2Genes Encode Separate Mitochondrial NADH Dehydrogenases Catalyzing the Oxidation of Cytosolic NADH*

Author

Luttik, Marijke A.H., Overkamp, Karin M., Kötter, Peter, de Vries, Simon, van Dijken, Johannes P., and Pronk, Jack T.

Abstract

In Saccharomyces cerevisiae, theNDI1gene encodes a mitochondrial NADH dehydrogenase, the catalytic side of which projects to the matrix side of the inner mitochondrial membrane. In addition to this NADH dehydrogenase,S. cerevisiaeexhibits another mitochondrial NADH-dehydrogenase activity, which oxidizes NADH at the cytosolic side of the inner membrane. To investigate whether open reading framesYMR145c/NDE1and YDL 085w/NDE2,which exhibit sequence similarity with NDI1, encode the latter enzyme, NADH-dependent mitochondrial respiration was assayed in wild-type S. cerevisiaeand ndedeletion mutants. Mitochondria were isolated from aerobic, glucose-limited chemostat cultures grown at a dilution rate (D) of 0.10 h−1, in which reoxidation of cytosolic NADH by wild-type cells occurred exclusively by respiration. Compared with the wild type, rates of mitochondrial NADH oxidation were about 3-fold reduced in annde1Δmutant and unaffected in an nde2Δmutant. NADH-dependent mitochondrial respiration was completely abolished in an nde1Δ nde2Δ double mutant. Mitochondrial respiration of substrates other than NADH was not affected in ndemutants. In shake flasks, an nde1Δ nde2Δ mutant exhibited reduced specific growth rates on ethanol and galactose but not on glucose. Glucose metabolism in aerobic, glucose-limited chemostat cultures (D = 0.10 h−1) of an nde1Δ nde2Δ mutant was essentially respiratory. Apparently, under these conditions alternative systems for reoxidation of cytosolic NADH could replace the role of Nde1p and Nde2p in S. cerevisiae.

Published
1998
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34. Comparative genomics reveals high biological diversity and specific adaptations in the industrially and medically important fungal genus Aspergillus

Author

Vries, Ronald P. de, Riley, Robert, Wiebenga, Ad, Aguilar-Osorio, Guillermo, Amillis, Sotiris, Akemi Uchima, Cristiane, Anderluh, Gregor, Asaollahi, Mojtaba, Askin, Marion, Barry, Kerrie, Battaglia, Evy, Bayram, Ozgur, Benocci, Tiziano, Braus-Stromeyer, Susanna A., Caldana, Camila, Cánovas, David, Cerqueira, Gustavo C., Chen, Fusheng, Chen, Wanping, Choi, Cindy, Clum, Alicia, Corrêa dos Santos, Renato Augusto, Lima Damásio, André Ricardo de, Diallinas, George, Emri, Tamás, Fekete, Erzébet, Flipphi, Michel, Freyburg, Susanne, Gallo, Antonia, Gournas, Christos, Habgood, Rob, Hainaut, Matthieu, Harispe, Maria Laura, Henrissat, Bernard, Hildén, Kristiina S., Hope, Ryan, Hossain, Abeer, Karabika, Eugenia, Karaffa, Levente, Karanyi, Zsolt, Krasevec, Nada, Kuo, Alan, Kusch, Harald, LaButti, Kurt, Lagendijk, Ellen L., Lapidus, Alla, Levasseur, Anthony, Lindquist, Erika, Lipzen, Anna, Logrieco, Antonio F., MacCabe, Andrew, Mäkela, Miia R., Malavazi, Iran, Melin, Petter, Meyer, Vera, Mielnichuk, Natalia, Miskei, Márton, Molnár, Ákos P., Mulé, Giuseppina, Ngan, Chew Yee, Orejas, Margarita, Orosz, Erzsébet, Ouedraogo, Jean Paul, Overkamp, Karin M., Park, Hee-Soo, Perrone, Giancarlo, Piumi, Francois, Punt, Peter J., Ram, Arthur F.J., Ramon, Ana, Rauscher, Stefan, Record, Eric, Riaño-Pachón, Diego Mauricio, Robert, Vincent, Röhrig, Julian, Ruller, Roberto, Salamov, Asaf, Salih, Nadhira S., Samson, Rob A., Sándor, Erzsébet, Sanguinetti, Manuel, Schütze, Tabea, Sepčić, Kristina, Shelest, Ekaterina, Sherlock, Gavin, Sophianopoulou, Vicky, Squina, Fabio M., Sun, Hui, Susca, Antonia, Todd, Richard B., Tsang, Adrian, Unkles, Shiela E., Wiele, Nathalie van de, Rossen-Uffink, Diana van, Velasco de Castro Oliveira, Juliana, Vesth, Tammi C., Visser, Jaap, Yu, Jae-Hyuk, Zhou, Miaomiao, Andersen, Mikael R., Archer, David B., Baker, Scott E., Benoit, Isabelle, Brakhage, Axel A., Braus, Gerhard H., Fischer, Reinhard, Frisvad, Jens C., Goldman, Gustavo H., Houbraken, Jos, Oakley, Berl, Pócsi, István, Scazzocchio, Claudio, Seiboth, Bernhard, vanKuyk, Patricia A., Wortman, Jennifer, Dyer, Paul S., Grigoriev, Igor V., Vries, Ronald P. de, Riley, Robert, Wiebenga, Ad, Aguilar-Osorio, Guillermo, Amillis, Sotiris, Akemi Uchima, Cristiane, Anderluh, Gregor, Asaollahi, Mojtaba, Askin, Marion, Barry, Kerrie, Battaglia, Evy, Bayram, Ozgur, Benocci, Tiziano, Braus-Stromeyer, Susanna A., Caldana, Camila, Cánovas, David, Cerqueira, Gustavo C., Chen, Fusheng, Chen, Wanping, Choi, Cindy, Clum, Alicia, Corrêa dos Santos, Renato Augusto, Lima Damásio, André Ricardo de, Diallinas, George, Emri, Tamás, Fekete, Erzébet, Flipphi, Michel, Freyburg, Susanne, Gallo, Antonia, Gournas, Christos, Habgood, Rob, Hainaut, Matthieu, Harispe, Maria Laura, Henrissat, Bernard, Hildén, Kristiina S., Hope, Ryan, Hossain, Abeer, Karabika, Eugenia, Karaffa, Levente, Karanyi, Zsolt, Krasevec, Nada, Kuo, Alan, Kusch, Harald, LaButti, Kurt, Lagendijk, Ellen L., Lapidus, Alla, Levasseur, Anthony, Lindquist, Erika, Lipzen, Anna, Logrieco, Antonio F., MacCabe, Andrew, Mäkela, Miia R., Malavazi, Iran, Melin, Petter, Meyer, Vera, Mielnichuk, Natalia, Miskei, Márton, Molnár, Ákos P., Mulé, Giuseppina, Ngan, Chew Yee, Orejas, Margarita, Orosz, Erzsébet, Ouedraogo, Jean Paul, Overkamp, Karin M., Park, Hee-Soo, Perrone, Giancarlo, Piumi, Francois, Punt, Peter J., Ram, Arthur F.J., Ramon, Ana, Rauscher, Stefan, Record, Eric, Riaño-Pachón, Diego Mauricio, Robert, Vincent, Röhrig, Julian, Ruller, Roberto, Salamov, Asaf, Salih, Nadhira S., Samson, Rob A., Sándor, Erzsébet, Sanguinetti, Manuel, Schütze, Tabea, Sepčić, Kristina, Shelest, Ekaterina, Sherlock, Gavin, Sophianopoulou, Vicky, Squina, Fabio M., Sun, Hui, Susca, Antonia, Todd, Richard B., Tsang, Adrian, Unkles, Shiela E., Wiele, Nathalie van de, Rossen-Uffink, Diana van, Velasco de Castro Oliveira, Juliana, Vesth, Tammi C., Visser, Jaap, Yu, Jae-Hyuk, Zhou, Miaomiao, Andersen, Mikael R., Archer, David B., Baker, Scott E., Benoit, Isabelle, Brakhage, Axel A., Braus, Gerhard H., Fischer, Reinhard, Frisvad, Jens C., Goldman, Gustavo H., Houbraken, Jos, Oakley, Berl, Pócsi, István, Scazzocchio, Claudio, Seiboth, Bernhard, vanKuyk, Patricia A., Wortman, Jennifer, Dyer, Paul S., and Grigoriev, Igor V.

Abstract

Background: The fungal genus Aspergillus is of critical importance to humankind. Species include those with industrial applications, important pathogens of humans, animals and crops, a source of potent carcinogenic contaminants of food, and an important genetic model. The genome sequences of eight aspergilli have already been explored to investigate aspects of fungal biology, raising questions about evolution and specialization within this genus. Results: We have generated genome sequences for ten novel, highly diverse Aspergillus species and compared these in detail to sister and more distant genera. Comparative studies of key aspects of fungal biology, including primary and secondary metabolism, stress response, biomass degradation, and signal transduction, revealed both conservation and diversity among the species. Observed genomic differences were validated with experimental studies. This revealed several highlights, such as the potential for sex in asexual species, organic acid production genes being a key feature of black aspergilli, alternative approaches for degrading plant biomass, and indications for the genetic basis of stress response. A genome-wide phylogenetic analysis demonstrated in detail the relationship of the newly genome sequenced species with other aspergilli. Conclusions: Many aspects of biological differences between fungal species cannot be explained by current knowledge obtained from genome sequences. The comparative genomics and experimental study, presented here, allows for the first time a genus-wide view of the biological diversity of the aspergilli and in many, but not all, cases linked genome differences to phenotype. Insights gained could be exploited for biotechnological and medical applications of fungi.

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