75 results on '"Ellis, Noel"'
Search Results
52. Tendril-lessRegulates Tendril Formation in Pea Leaves
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Hofer, Julie, primary, Turner, Lynda, additional, Moreau, Carol, additional, Ambrose, Mike, additional, Isaac, Peter, additional, Butcher, Susan, additional, Weller, James, additional, Dupin, Adeline, additional, Dalmais, Marion, additional, Le Signor, Christine, additional, Bendahmane, Abdelhafid, additional, and Ellis, Noel, additional
- Published
- 2009
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53. ChemInform Abstract: Highly Stereoselective Synthesis of cis-Alkenyl Pinacolboronates and Potassium cis-Alkenyltrifluoroborates via a Hydroboration/Protodeboronation Approach.
- Author
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Molander, Gary A., primary and Ellis, Noel M., additional
- Published
- 2009
- Full Text
- View/download PDF
54. High-throughput retrotransposon-based fluorescent markers: improved information content and allele discrimination
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Knox, Maggie, primary, Moreau, Carol, additional, Lipscombe, James, additional, Baker, David, additional, and Ellis, Noel, additional
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- 2009
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55. Genetic Control of Leaf Morphology: A Partial View
- Author
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Hofer, Julie M., Gourlay, Campbell W., Ellis, Noel T. H., Hofer, Julie M., Gourlay, Campbell W., and Ellis, Noel T. H.
- Abstract
The partial-shoot theory of the leaf was a controversial hypothesis revived by Arber and supported by her morphological and anatomical studies. This theory highlighted the parallels between leaves and shoots and contrasted with an alternative view that leaves, with their limited growth potential, are completely distinct from shoots. Pea morphological mutants with altered growth potential in their compound leaves are described. The unifoliata mutant has a limited growth potential relative to wild-type; cochleata , afila and insecatus have extended potentials. Characterization of the unifoliata mutation and gene expression patterns indicate that unifoliata is a common factor in pea compound leaf and floral shoot development, and so provides rudimentary support for the idea that some leaves have shoot-like characteristics. Tomato leaves are also considered to lend tentative support. The afila and insecatus leaf forms are described as bipinnate and weakly bipinnate, respectively. These and the tendril-less mutant are potential phenocopies of legume relatives, an idea based on Vavilov's law of homologous series of variation. Arber illustrated, but did not articulate in genetical terms, that morphological variation in structures within an individual plant can be interpreted as reiteration of design. Analogous with Vavilov's view, this can be considered a consequence of the same genetic programme in a different location.
- Published
- 2001
56. Highly Stereoselective Synthesis of cis-Alkenyl Pinacolboronates and Potassium cis-Alkenyltrifluoroborates via a Hydroboration/Protodeboronation Approach
- Author
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Molander, Gary A., primary and Ellis, Noel M., additional
- Published
- 2008
- Full Text
- View/download PDF
57. Highly Stereoselective Synthesis of cis-Alkenyl Pinacolboronates and Potassium cis-Alkenyltrifluoroborates via a Hydroboration/ Protodeboronation Approach
- Author
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Molander, Gary A., primary and Ellis, Noel M., additional
- Published
- 2008
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- View/download PDF
58. Organotrifluoroborates: Protected Boronic Acids that Expand the Versatility of the Suzuki Coupling Reaction
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Molander, Gary A., primary and Ellis, Noel, additional
- Published
- 2007
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59. Linchpin Synthons: Metalation of Aryl Bromides Bearing a Potassium Trifluoroborate Moiety.
- Author
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Molander, Gary A., primary and Ellis, Noel M., additional
- Published
- 2007
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60. NMR profiling of transgenic peas
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Charlton, Adrian, primary, Allnutt, Theo, additional, Holmes, Stephen, additional, Chisholm, James, additional, Bean, Samantha, additional, Ellis, Noel, additional, Mullineaux, Phil, additional, and Oehlschlager, Sarah, additional
- Published
- 2004
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- View/download PDF
61. Translational Genomics in Agriculture: Some Examples in Grain Legumes.
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Varshney, Rajeev K., Kudapa, Himabindu, Pazhamala, Lekha, Chitikineni, Annapurna, Thudi, Mahendar, Bohra, Abhishek, Gaur, Pooran M., Janila, Pasupuleti, Fikre, Asnake, Kimurto, Paul, and Ellis, Noel
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PLANT genomes ,LEGUMES ,BIOINFORMATICS ,PLANT species ,PLANT genes - Abstract
Recent advances in genomics and associated disciplines like bioinformatics have made it possible to develop genomic resources, such as large-scale sequence data for any crop species. While these datasets have been proven very useful for the understanding of genome architecture and dynamics as well as facilitating the discovery of genes, an obligation for, and challenge to the scientific community is to translate genome information to develop products, i.e. superior lines for trait(s) of interest. We call this approach, “translational genomics in agriculture” (TGA). TGA is currently in practice for cereal crops, such as maize (Zea mays) and rice (Oryza sativa), mainly in developed countries and by the private sector; progress has been slow for legume crops. Grown globally on 62.8 million ha with a production of 53.2 million tons and a value of nearly 24.2 billion dollars, the majority of these legumes have low crop productivity (<1 ton/ hectare) and are in the developing countries of sub Saharan Africa, Asia and South America. Interestingly, the last five years have seen enormous progress in genomics for these legume crops. Therefore, it is time to implement TGA in legume crops in order to enhance crop productivity and to ensure food security in developing countries. Prospects, as well as some success stories of TGA, in addition to advances in genomics, trait mapping and gene expression analysis are discussed for five leading legume crops, chickpea (Cicer arietinum), common bean (Phaseolus vulgaris), groundnut (Arachis hypogaea), pigeonpea (Cajanus cajan) and soybean (Glycine max). Some efforts have also been outlined to initiate/ accelerate TGA in three additional legume crops namely faba bean (Vicia faba), lentil (Lens culinaris) and pea (Pisum sativum). [ABSTRACT FROM PUBLISHER]
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- 2015
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62. UNIFOLIATA regulates leaf and flower morphogenesis in pea
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Hofer, Julie, primary, Turner, Lynda, additional, Hellens, Roger, additional, Ambrose, Mike, additional, Matthews, Peter, additional, Michael, Anthony, additional, and Ellis, Noel, additional
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- 1997
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63. Estimating map distances
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Ellis, Noel, primary
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- 1994
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64. Exploiting a fast neutron mutant genetic resource in Pisum sativum (pea) for functional genomics.
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Claire, Domoney, Knox, Maggie, Moreau, Carol, Ambrose, Mike, Palmer, Sarah, Smith, Peter, Christodoulou, Vangelis, Isaac, Peter G., Hegarty, Matthew, Blackmore, Tina, Swain, Martin, and Ellis, Noel
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FAST neutrons ,PEA genetics ,PLANT mutation ,PLANT germplasm ,PLANT genomes - Abstract
A fast neutron (FN)-mutagenised population was generated in Pisum sativum L. (pea) to enable the identification and isolation of genes underlying traits and processes. Studies of several phenotypic traits have clearly demonstrated the utility of the resource by associating gene deletions with phenotype followed by functional tests exploiting additional mutant sources, from both induced and natural variant germplasm. For forward genetic screens, next generation sequencing methodologies provide an opportunity for identifying genes associated with deletions rapidly and systematically. The application of rapid reverse genetic screens of the fast neutron mutant pea population supports conclusions on the frequency of deletions based on phenotype alone. These studies also suggest that large deletions affecting one or more loci can be non-deleterious to the pea genome, yielding mutants that could not be obtained by other means. Deletion mutants affecting genes associated with seed metabolism and storage are providing unique opportunities to identify the products of complex and related gene families, and to study the downstream consequences of such deletions. [ABSTRACT FROM AUTHOR]
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- 2013
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65. Conserved genetic determinant of motor organ identity in Medicago truncatula and related legumes.
- Author
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Jianghua Chen, Moreau, Carol, Yu Liu, Kawaguchi, Masayoshi, Hofer, Julie, Ellis, Noel, and Rujin Chen
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MEDICAGO truncatula ,LEGUME genetics ,PLANT cells & tissues ,PLANT physiology ,TRANSCRIPTION factors ,GENE expression - Abstract
Plants exhibit various kinds of movements that have fascinated scientists and the public for centuries. Physiological studies in plants with the so-called motor organ or pulvinus suggest that cells at opposite sides of the pulvinus mediate leaf or leaflet movements by swelling and shrinking. How motor organ identity Is determined is unknown. Using a genetic approach, we isolated a mutant designated elongated petiolulel 1(e/pi) from Medicago truncatula that fails to fold its leaflets in the dark due to loss of motor organs. Map-based cloning indicated that ELP1 encodes a putative plant-specific LOB domain transcription factor. RNA in situ analysis revealed that ELP1 is expressed in primordial cells that give rise to the motor organ. Ectopic expression of ELP1 resulted in dwarf plants with petioles and rachises reduced in length, and the epidermal cells gained characteristics of motor organ epidermal cells. By identifying ELP1 orthologs from other legume species, namely pea (Pisum sativum) and Lotus japonicus, we show that this motor organ identity is regulated by a conserved molecular mechanism. [ABSTRACT FROM AUTHOR]
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- 2012
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66. Phylogeny, phylogeography and genetic diversity of the Pisum genus.
- Author
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Smýkal, Petr, Kenicer, Gregory, Flavell, Andrew J., Corander, Jukka, Kosterin, Oleg, Redden, Robert J., Ford, Rebecca, Coyne, Clarice J., Maxted, Nigel, Ambrose, Mike J., and Ellis, Noel T. H.
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PLANT phylogeny ,PHYLOGEOGRAPHY ,PLANT diversity ,PISUM ,MICROSATELLITE repeats ,PLANT germplasm - Abstract
The tribe Fabeae (formerly Vicieae) contains some of humanity's most important grain legume crops, namely Lathyrus (grass pea/sweet pea/chickling vetches; about 160 species); Lens (lentils; 4 species); Pisum (peas; 3 species); Vicia (vetches; about 140 species); and the monotypic genus Vavilovia. Reconstructing the phylogenetic relationships within this group is essential for understanding the origin and diversification of these crops. Our study, based on molecular data, has positioned Pisum genetically between Vicia and Lathyrus and shows it to be closely allied to Vavilovia. A study of phylogeography, using a combination of plastid and nuclear markers, suggested that wild pea spread from its centre of origin, the Middle East, eastwards to the Caucasus, Iran and Afghanistan, and westwards to the Mediterranean. To allow for direct data comparison, we utilized model-based Bayesian Analysis of Population structure (BAPS) software on 4429 Pisum accessions from three large world germplasm collections that include both wild and domesticated pea analyzed by retrotransposon-based markers. An analysis of genetic diversity identified separate clusters containing wild material, distinguishing Pisum fulvum, P. elatius and P. abyssinicum, supporting the view of separate species or subspecies. Moreover, accessions of domesticated peas of Afghan, Ethiopian and Chinese origin were distinguished. In addition to revealing the genetic relationships, these results also provided insight into geographical and phylogenetic partitioning of genetic diversity. This study provides the framework for defining global Pisum germplasm diversity as well as suggesting a model for the domestication of the cultivated species. These findings, together with gene-based sequence analysis, show that although introgression from wild species has been common throughout pea domestication, much of the diversity still resides in wild material and could be used further in breeding. Moreover, although existing collections contain over 10,000 pea accessions, effort should be directed towards collecting more wild material in order to preserve the genetic diversity of the species. [ABSTRACT FROM PUBLISHER]
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- 2011
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67. Estimating genome conservation between crop and model legume species.
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Hong-Kyu Choi, Jeong-Hwan Mun, Dong-Jin Kim, Hongyan Zhu, Jong-Min Baek, Mudge, Joanne, Roe, Bruce, Ellis, Noel, Doyle, Jeff, Kiss, Gyorgy B., Young, Nevin D., and Cook, Douglas R.
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NITROGEN cycle ,LEGUMES ,GENE mapping ,PHYLOGENY ,CELL nuclei ,GENOMES - Abstract
Legumes are simultaneously one of the largest families of crop plants and a cornerstone in the biological nitrogen cycle. We combined molecular and phylogenetic analyses to evaluate genome conservation both within and between the two major clades of crop legumes. Genetic mapping of orthologous genes identifies broad conservation of genome macrostructure, especially within the galegoid legumes, while also highlighting inferred chromosomal rearrangements that may underlie the variation in chromosome number between these species. As a complement to comparative genetic mapping, we compared sequenced regions of the model legume Medicago truncatula with those of the diploid Lotus japonicus and the polyploid Glycine max. High conservation was observed between the genomes of M. truncatula and L. japonicus, whereas lower levels of conservation were evident between M. truncatula and G. max. In all cases, conserved genome microstructure was punctuated by significant structural divergence, including frequent insertion/deletion of individual genes or groups of genes and lineage-specific expansion/contraction of gene families. These results suggest that comparative mapping may have considerable utility for basic and applied research in the legumes, although its predictive value is likely to be tempered by phylogenetic distance and genome duplication. [ABSTRACT FROM AUTHOR]
- Published
- 2004
- Full Text
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68. The Structure, Expression and Arrangement of Legumin Genes in Peas
- Author
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Casey, Rod, primary, Domoney, Claire, additional, Ellis, Noel, additional, and Turner, Simon, additional
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- 1988
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69. Book Reviews
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Ellis, Noel, primary
- Published
- 1989
- Full Text
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70. Application of mutation breeding to the improvement of the under-studied crop tef (Eragrostis tef (Zucc.) Trotter)
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Tadele, Zerihun, Assefa, Kebebew, Chanyalew, Solomon, Bekele, Abate, Weichert, Annett, Schnell, Mirjam, R��ckel, Nora, Hussein, Negussu, Cannarozzi, Gina, Sivasankar, Shoba, Ellis, Noel, Jankuloski, Ljupcho, and Ingelbrecht, Ivan
- Subjects
food and beverages ,580 Plants (Botany) - Abstract
Induced mutation has been playing a significant role in the improvement of diverse crop types. This led to the release of over 3200 crop varieties in over 70 countries. We implemented induced mutation on tef (Eragrostis tef (Zucc.) Trotter), one of the most important cereal crops in the Horn of Africa, especially in Ethiopia, where it is annually cultivated on over 3 million hectares of land, equivalent to 30% of the total area allocated to cereals. Although tef is extensively cultivated in Ethiopia due to its resilience to diverse environmental stresses, the productivity of the crop is very low. The Tef Improvement Project based at the University of Bern in Switzerland employs mutation breeding to tackle major constraints in tef in order to enhance crop productivity. About 12,000 EMS (ethyl methanesulfonate) mutagenized M2 families were generated from four improved tef varieties, namely ���Tsedey���, ���Dukem���, ���Kora��� and ���Dagim���. Screening for major traits of importance helped us to obtain several candidate lines, including semi-dwarf and lodging-tolerant, drought-tolerant and acid-soil-tolerant lines. Among these, the most promising ones were introgressed to locally adapted improved varieties followed by several years of testing at representative locations for traits of interest. As a result, a new variety called ���Tesfa��� with a novel and desirable combination of traits was approved for release to the farming community. This shows that the project has been actively involved in all three phases of induced mutation: mutation induction, mutation detection and mutation breeding.
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- 2021
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71. Breeding pea for grain and fodder in Osijek
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Gantner, Ranko, Stjepanović, Mirko, Popović, Svetislav, Čupić, Tihomir, Anicchiarico, Paolo, Bochard, Anne-Marie, Ellis, Noel, Mikić, Aleksandar, Monreal, Ramos, Alvaro, Smykal, Petr, Warkentin, Tom, and Winter, Peter
- Subjects
breeding ,pea ,grain ,fodder - Abstract
Field pea for dry grain and fodder is being bred in Osijek since 1987, but this work is intensified since the year 1997. Comprehensive variety trials are being conducted each year since 1997. Varieties of various origins were evaluated. Also they were used for investigation of yield and yield components interaction with aim to define the primary selection objectives. Old varieties were used to select the breeding lines too. In the year 1997 there were only 5 registered varieties of field pea for dry grain in Croatia, all of foreign origin, and only 8 fodder varieties ; only one of them was of Croatian origin. Collection of parental lines is being continuously enriched with introductions of divergent varieties and accessions of ecotypes and wild relatives. Breeding lines and accessions are being utilized in a new variability creation which is followed by selection, mostly pedigree. Most important breeding goals are high yield and quality of grain and fodder and resistance to biotic and abiotic stress. The results of numerous hybridizations and selection are two registered pea varieties: winter fodder pea Osječki zeleni (2002) and spring dry pea Gold (2005), created in collaboration of Agricultural Institute Osijek and Faculty of Agriculture in Osijek. Also, there are three genotypes that are currently being tested by Seed and Seedlings Institute in multi-location state trials. Two of them are of dry pea type and one is fodder type. In two previous years of state trials, both dry pea genotypes yielded better then standard. Average yield of our new genotype in 2006 was 4, 6 tonnes per hectare while standard yielded 4, 3 tonnes per hectare in average. In 2007 our new genotype average was 5, 7 tonnes per hectare while standard yielded 4, 7 tonnes per hectare in average. Thus our new genotypes have demonstrated their high yielding potential.
- Published
- 2008
72. Combining ability of pea genotypes
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Gantner, Ranko, Drezner, Georg, Stjepanović, Mirko, Popović, Svetislav, Čupić, Tihomir, Annicchiarico, Paolo, Bochard, Anne-Marie, Ellis, Noel, Mikić, Aleksandar, Monreal, Ramos, Alvaro, Smykal, Petr, Warkentin, Tom, and Winter, Peter
- Subjects
pea ,breeding ,general combining ability - Abstract
Knowing combining ability of parental lines is important in estimating a potential of a parent in a new variety creation. The general opinion is that parents with good combining ability will give a good new genotype. F1 generations with high values of desired traits often have high probability of giving more valuable progeny in later generations. Aim of this research is to estimate general combining ability of 6 parental lines of field pea based on 6×6 diallel cross without reciprocal crosses. General combining ability of each parent was calculated as an average value of progeny of all parental combinations containing respective parent. There were tested 15 F1 combinations of progeny of diallel cross on traits of plant height and grain yield per plant in 2008 year. Parental lines were spring field pea varieties as follows: Danish yellow dry pea Anno, medium tall (about 52 cm) with afila leaf type, Croatian yellow dry pea Gold with low plant habit (about 48 cm tall) and afila leaf type, American yellow dry pea Shawnee with high plant habit (about 84 cm tall) and wild leaf type, American green dry pea Joel with high plant habit (about 83 cm tall) and wild leaf type, new yellow dry pea genotype PF-G1, creation of Faculty of Agriculture in Osijek and Agricultural Institute Osijek, with medium high plant habit (about 65 cm tall) and wild leaf type and Serbian field pea NS-Junior, arvense type for fodder and grain (yellow grain) production with high plant habit (about 118 cm tall) and wild leaf type. F1 progenies were seeded in optimal agrotechnical term (12th March 2008) with stand of about 100 seeds per square meter in microplots, in Osijek, on eutric cambisol. Upon harvest, there were determined plant height and grain yield per plant. The general combining ability of each parent for the plant height trait was as follows: Gold 66, 06 cm, Anno 66, 41cm, PF-G1 78, 66cm, Shawnee 87, 60cm, Joel 88, 91cm and NS-Junior 96, 34 cm. For the grain yield per plant the general combining ability was as follows: Gold 6, 64 g, Shawnee 7, 00 g, Anno 7, 26 g, Joel 7.51 g, PF-G1 7, 71 g and NS-Junior 7, 95 g. NS-Junior has performed the best combining ability for grain yield per plant and high plant height. However, association of high yield with high plant height is considered as unfavorable in grain production due to plant lodging potential and excessive biomass that impedes harvesting. If in segregating generations the NS-Junior's progeny fail to segregate separately regarding these traits, the best genotypes will probably be obtained of other good combinators.
- Published
- 2008
73. Progress on the Vicia faba map and applications for breeding
- Author
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Torres, Ana Maria, Roman, Belen, Avila, Carmen Maria, Rubiales, Diego, Šatović, Zlatko, Cubero, Jose Ignacio, Muel, Frederic, Denarie, Jean, Ellis, Noel, and Schneider, Anne
- Subjects
Vicia faba ,linkage map ,trisomics ,QTLs ,synteny ,food and beverages - Abstract
One of the main goals of our group has been to develop a genetic map of faba bean as a necessary complement of tagging of genes of agronomic interest. After successful identification and characterisation of five of the six possible primary trisomics, crosses between an asynaptic line and a normal diploid parent allowed us to generate a composite genetic map of linkage groups localised to their respective chromosomes. Eleven F2 populations with a total of 654 individuals sharing a common female parent were analysed simultaneously. Linkage analysis revealed 15 major linkage groups, 7 of which were located on specific chromosomes. The present map has allowed the detection of QTLs for important agronomic traits as seed weight or broomrape and Ascochyta fabae resistance as well as to tag a gene controlling resistance to Uromyces fabae. A map useful for marker-assisted selection requires saturation especially in the regions harbouring agronomically important traits. Our future aims include: (1) extend the genome coverage to attach all currently unassigned markers and reduce the number of linkage groups to six., (2) continue the mapping of new major genes and QTLs of agronomic interest, and test them in multiple environments and in different genetic backgrounds to identify the QTLs with more stable expression and, (3) establish the extent of synteny between Vicia faba and other legume species. V. faba belongs to what is considered the basal genus in the Viciaceae and thus information about the arrangement of genes on its genome should be very important for examining the evolution of the genome structure in the tribe. However, V. faba possesses one of the largest genomes among legumes (cca. 12.000 Mb), compared with other better-characterized crops as soybean, pea or Medicago (cca. 1.200, 4.000, and 450 Mb, respectively). The large genome size make complete sequencing a cumbersome and costly task and seriously complicate the identification and location of important genes. Syntenic relationships within botanical families make it possible to use plant species with much smaller genomes to facilitate understanding of those with large genomes. At present, molecular studies of faba bean have been limited to morphological traits, isozymes, a few seed-protein genes and microsatellites, and a great amount of RAPD markers. The latter enabled genetic maps to be constructed rapidly, but such maps cannot be aligned with those of other species. To overcome this, we are transforming a set of RAPD markers. The latter enabled genetic maps to be constructed rapidly, but such maps cannot be aligned with those of other species. For breeding purposes, special interest is being focused on RAPD markers tightly linked to genes or QTLs of agronomic interest. In addition to this, 75 Medicago truncatula PCR-based primer pairs and 17 STSs pea markers are being tested on genomic DNA from our faba bean mapping parents. A parallel analysis is being conducted in our chickpea and pea parental lines. There is little information available to predict transferability of STS markers but their ease of assay enables them to be tested empirically. As a large number of STSs are being developed in M. truncatula or pea, even a relatively low level of transferability will provide a valuable marker resource.
- Published
- 2002
74. Rebalancing the seed proteome following deletion of vicilin-related genes in pea (Pisum sativum L.).
- Author
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Rayner T, Saalbach G, Vickers M, Paajanen P, Martins C, Wouters RHM, Chinoy C, Mulholland F, Bal M, Isaac P, Novak P, Macas J, Ellis N, Steuernagel B, and Domoney C
- Abstract
Null mutations for genes encoding a major seed storage protein in pea, vicilin, were sought through screening a fast-neutron mutant population. Deletion mutations at four or five vicilin loci, where all vicilin genes within each locus were deleted, were combined to address the question of how removal or reduction of a major storage protein and potential allergen might impact the final concentration of protein per unit mature seed weight, seed yield and viability. While the concentration of seed protein was not reduced in mature seeds of mutant lines, indicative of a re-balancing of the proteome, notable differences were apparent in the metabolite, proteomic and amino acid profiles of the seeds, as well as in some functional properties. Major effects of the deletions on the proteome were documented. The genomic regions which were deleted were defined by whole genome sequencing of the parental line, JI2822 and its quintuple vicilin null derivative, providing a comprehensive description of each vicilin locus and its genic arrangement. An annotated reference genome has been generated for JI2822, which will serve as a very valuable resource for the research community and support further study of the associated deletion mutant population., (© The Author(s) 2024. Published by Oxford University Press on behalf of the Society for Experimental Biology.)
- Published
- 2024
- Full Text
- View/download PDF
75. Organotrifluoroborates: protected boronic acids that expand the versatility of the Suzuki coupling reaction.
- Author
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Molander GA and Ellis N
- Subjects
- Boronic Acids chemistry, Catalysis, Combinatorial Chemistry Techniques, Models, Chemical, Boron Compounds chemistry
- Abstract
Organotrifluoroborates represent an alternative to boronic acids, boronate esters, and organoboranes for use in Suzuki-Miyaura and other transition-metal-catalyzed cross-coupling reactions. The trifluoroborate moiety is stable toward numerous reagents that are often problematic for other boron species. Consequently, remote functional groups within the organotrifluoroborates can be manipulated, while retaining the valuable carbon-boron bond.
- Published
- 2007
- Full Text
- View/download PDF
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