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18 results on '"Iha, Cintia"'

5. Insights into agar and secondary metabolite pathways from the genome of the red alga Gracilaria domingensis (Rhodophyta: Gracilariales)

Author

Nakamura­Gouvea, Natalia, primary, Alves­Lima, Cicero, additional, Benites, L. Felipe, additional, Iha, Cintia, additional, Maracaja­Coutinho, Vinicius, additional, Aliaga­Tobar, Victor, additional, Amaral, Marcella, additional, Yokoya, Nair S, additional, Marinho­Soriano, Eliane, additional, Graminha, Marcia A S, additional, Collén, Jonas, additional, Cabral Oliveira, Mariana, additional, Setubal, Joao Carlos, additional, and Colepicolo, Pio, additional

Published
2022
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10. Genomic adaptations to an endolithic lifestyle in the coral-associated alga Ostreobium

Author

Iha, Cintia, Dougan, Katherine E., Varela, Javier A., Avila, Viridiana, Jackson, Christopher J., Bogaert, Kenny A., Chen, Yibi, Judd, Louise M., Wick, Ryan, Holt, Kathryn E., Pasella, Marisa M., Ricci, Francesco, Repetti, Sonja I., Medina, Mónica, Marcelino, Vanessa R., Chan, Cheong X., and Verbruggen, Heroen

Subjects
Ostreobium, Genome, natural sciences, Green algae, coral holobiont
Abstract

Genomic dataset for the endolithic green alga Ostreobium. Ostreobium699_1D.cds.fasta - CDS sequences Ostreobium699_1D.function.tsv - Gene function annotation (Best hit Uniprot and KEGG) Ostreobium699_1D.gff - Gene model in gff3 format Ostreobium699_1D.genome.fasta - Genome scaffold sequences Ostreobium699_1D.protein.faa - Protein sequences, Ostreobium quekettii genome data updated in December 2020., {"references":["Cintia Iha, Katherine E. Dougan, Javier A. Varela, Viridiana Avila, Christopher J. Jackson, Kenny A. Bogaert, Yibi Chen, Louise M. Judd, Ryan Wick, Kathryn E. Holt, Marisa M. Pasella, Francesco Ricci, Sonja I. Repetti, Mónica Medina, Vanessa R. Marcelino, Cheong Xin Chan, Heroen Verbruggen (2021) Genomic adaptations to an endolithic lifestyle in the coral-associated alga Ostreobium, Current Biology, in press."]}

Published
2021
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11. Genomic adaptations to an endolithic lifestyle in the coral-associated alga Ostreobium

Author

Iha, Cintia, primary, Dougan, Katherine E., additional, Varela, Javier A., additional, Avila, Viridiana, additional, Jackson, Christopher J., additional, Bogaert, Kenny A., additional, Chen, Yibi, additional, Judd, Louise M., additional, Wick, Ryan, additional, Holt, Kathryn E., additional, Pasella, Marisa M., additional, Ricci, Francesco, additional, Repetti, Sonja I., additional, Medina, Mónica, additional, Marcelino, Vanessa R., additional, Chan, Cheong Xin, additional, and Verbruggen, Heroen, additional

Published
2021
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12. Tightly Constrained Genome Reduction and Relaxation of Purifying Selection during Secondary Plastid Endosymbiosis.

Author

Uthanumallian, Kavitha, Iha, Cintia, Repetti, Sonja I, Chan, Cheong Xin, Bhattacharya, Debashish, Duchene, Sebastian, and Verbruggen, Heroen

Subjects
ENDOSYMBIOSIS, PLASTIDS, PHOTOSYNTHETIC rates, ORGANELLES, GENETIC drift
Abstract

Endosymbiosis, the establishment of a former free-living prokaryotic or eukaryotic cell as an organelle inside a host cell, can dramatically alter the genomic architecture of the endosymbiont. Plastids or chloroplasts, the light-harvesting organelle of photosynthetic eukaryotes, are excellent models to study this phenomenon because plastid origin has occurred multiple times in evolution. Here, we investigate the genomic signature of molecular processes acting through secondary plastid endosymbiosis—the origination of a new plastid from a free-living eukaryotic alga. We used phylogenetic comparative methods to study gene loss and changes in selective regimes on plastid genomes, focusing on green algae that have given rise to three independent lineages with secondary plastids (euglenophytes, chlorarachniophytes, and Lepidodinium). Our results show an overall increase in gene loss associated with secondary endosymbiosis, but this loss is tightly constrained by the retention of genes essential for plastid function. The data show that secondary plastids have experienced temporary relaxation of purifying selection during secondary endosymbiosis. However, this process is tightly constrained, with selection relaxed only relative to the background in primary plastids. Purifying selection remains strong in absolute terms even during the endosymbiosis events. Selection intensity rebounds to pre-endosymbiosis levels following endosymbiosis events, demonstrating the changes in selection efficiency during different origin phases of secondary plastids. Independent endosymbiosis events in the euglenophytes, chlorarachniophytes, and Lepidodinium differ in their degree of relaxation of selection, highlighting the different evolutionary contexts of these events. This study reveals the selection–drift interplay during secondary endosymbiosis and evolutionary parallels during organellogenesis. [ABSTRACT FROM AUTHOR]

Published
2022
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13. Genomic adaptations to an endolithic lifestyle in the coral-associated alga Ostreobium

Author

Iha, Cintia, primary, Dougan, Katherine E., additional, Varela, Javier A., additional, Avila, Viridiana, additional, Jackson, Christopher J., additional, Bogaert, Kenny A., additional, Chen, Yibi, additional, Judd, Louise M., additional, Wick, Ryan, additional, Holt, Kathryn E., additional, Pasella, Marisa M., additional, Ricci, Francesco, additional, Repetti, Sonja I., additional, Medina, Mónica, additional, Marcelino, Vanessa R., additional, Chan, Cheong Xin, additional, and Verbruggen, Heroen, additional

Published
2020
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15. High-throughput sequencing for algal systematics

Author

Oliveira, Mariana C., primary, Repetti, Sonja I., additional, Iha, Cintia, additional, Jackson, Christopher J., additional, Díaz-Tapia, Pilar, additional, Lubiana, Karoline Magalhães Ferreira, additional, Cassano, Valéria, additional, Costa, Joana F., additional, Cremen, Ma. Chiela M., additional, Marcelino, Vanessa R., additional, and Verbruggen, Heroen, additional

Published
2018
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18. Pterocladiella(Gelidiales, Rhodophyta) species of Brazil including morphological studies of Pterocladiella mediaand a reassessment of Pterocladiella taylorii

Author

Iha, Cintia, Jamas, Mayra, Guimarães, Silvia M.P.B., Fujii, Mutue T., Freshwater, D. Wilson, and Oliveira, Mariana C.

Abstract

Abstract:Seven species of the economically important agarophyte genus Pterocladiellawere previously reported from Brazil: P. australafricanensis, P. bartlettii, P. beachiae, P. caerulescens, P. capillacea, P. sanctarumand P. taylorii. Only P. australafricanensis, P. bartlettii, P. beachiaeand P. capillaceawere previously confirmed by molecular data. This study surveyed Pterocladiellaspecies from Brazil using both morphological and molecular analyses. DNA bar coding and phylogenetic analyses were carried out with mitochondrial COI-5P and plastid rbcL markers. Both molecular and morphological data confirmed the presence of five species in Brazil: P. australafricanensis, P. bartlettii, P. beachiae, P. capillaceaand a new record of P. media. Pterocladiella beachiaeand P. bartlettiiare common intertidal species along Brazilian coasts, and they were the only species found along the northeast coast. The diversity of Pterocladiellaspecies on southeast coasts is higher, and all species were found there. The presence of P. beachiaeand P. australafricanensis, which are cryptic species within the P. caerulescensspecies complex, suggests that the latter may not be present in Brazil. Previously reported P. caerulescensspecimens problaby represent P. beachiaebecause it was widespread along the Brazilian coast and P. australafricanensiswas rare. Pterocladiella capillaceawas common but restricted to the southeast coast. Pterocladiella tayloriiis a synonym of P. bartlettiibased on morphological features and molecular data. Pterocladiella mediais a new record for Brazil, and the first detailed morphological study of reproductive specimens in this species was made.

Published
2017
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