The Experts below are selected from a list of 309 Experts worldwide ranked by ideXlab platform
Guillaume Decocq - One of the best experts on this subject based on the ideXlab platform.
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Adaptive evolution of seed Oil Content in angiosperms: accounting for the global patterns of seed Oils
BMC Evolutionary Biology, 2016Co-Authors: Amartya Sanyal, Guillaume DecocqAbstract:BackgroundStudies of the biogeographic distribution of seed Oil Content in plants are fundamental to understanding the mechanisms of adaptive evolution in plants as seed Oil is the primary energy source needed for germination and establishment of plants. However, seed Oil Content as an adaptive trait in plants is poorly understood. Here, we examine the adaptive nature of seed Oil Content in 168 angiosperm families occurring in different biomes across the world. We also explore the role of multiple seed traits like seed Oil Content and composition in plant adaptation in a phylogenetic and nonphylogenetic context.ResultIt was observed that the seed Oil Content in tropical plants (28.4 %) was significantly higher than the temperate plants (24.6 %). A significant relationship between Oil Content and latitude was observed in three families Papaveraceae, Sapindaceae and Sapotaceae indicating that selective forces correlated with latitude influence seed Oil Content. Evaluation of the response of seed Oil Content and composition to latitude and the correlation between seed Oil Content and composition showed that multiple seed traits, seed Oil Content and composition contribute towards plant adaptation. Investigation of the presence or absence of phylogenetic signals across 168 angiosperm families in 62 clades revealed that members of seven clades evolved to have high or low seed Oil Content independently as they did not share a common evolutionary path.ConclusionThe study provides us an insight into the biogeographical distribution and the adaptive role of seed Oil Content in plants. The study indicates that multiple seed traits like seed Oil Content and the fatty acid composition of the seed Oils determine the fitness of the plants and validate the adaptive hypothesis that seed Oil quantity and quality are crucial to plant adaptation.
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Adaptive evolution of seed Oil Content in angiosperms: accounting for the global patterns of seed Oils
BMC evolutionary biology, 2016Co-Authors: Anushree Sanyal, Guillaume DecocqAbstract:Studies of the biogeographic distribution of seed Oil Content in plants are fundamental to understanding the mechanisms of adaptive evolution in plants as seed Oil is the primary energy source needed for germination and establishment of plants. However, seed Oil Content as an adaptive trait in plants is poorly understood. Here, we examine the adaptive nature of seed Oil Content in 168 angiosperm families occurring in different biomes across the world. We also explore the role of multiple seed traits like seed Oil Content and composition in plant adaptation in a phylogenetic and nonphylogenetic context. It was observed that the seed Oil Content in tropical plants (28.4 %) was significantly higher than the temperate plants (24.6 %). A significant relationship between Oil Content and latitude was observed in three families Papaveraceae, Sapindaceae and Sapotaceae indicating that selective forces correlated with latitude influence seed Oil Content. Evaluation of the response of seed Oil Content and composition to latitude and the correlation between seed Oil Content and composition showed that multiple seed traits, seed Oil Content and composition contribute towards plant adaptation. Investigation of the presence or absence of phylogenetic signals across 168 angiosperm families in 62 clades revealed that members of seven clades evolved to have high or low seed Oil Content independently as they did not share a common evolutionary path. The study provides us an insight into the biogeographical distribution and the adaptive role of seed Oil Content in plants. The study indicates that multiple seed traits like seed Oil Content and the fatty acid composition of the seed Oils determine the fitness of the plants and validate the adaptive hypothesis that seed Oil quantity and quality are crucial to plant adaptation.
Boshou Liao - One of the best experts on this subject based on the ideXlab platform.
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abundant microsatellite diversity and Oil Content in wild arachis species
PLOS ONE, 2012Co-Authors: Li Huang, Huifang Jiang, Xiaoping Ren, Yuning Chen, Yingjie Xiao, Xinyan Zhao, Mei Tang, Jiaquan Huang, Hari D Upadhyaya, Boshou LiaoAbstract:The peanut (Arachis hypogaea) is an important Oil crop. Breeding for high Oil Content is becoming increasingly important. Wild Arachis species have been reported to harbor genes for many valuable traits that may enable the improvement of cultivated Arachis hypogaea, such as resistance to pests and disease. However, only limited information is available on variation in Oil Content. In the present study, a collection of 72 wild Arachis accessions representing 19 species and 3 cultivated peanut accessions were genotyped using 136 genome-wide SSR markers and phenotyped for Oil Content over three growing seasons. The wild Arachis accessions showed abundant diversity across the 19 species. A. duranensis exhibited the highest diversity, with a Shannon-Weaver diversity index of 0.35. A total of 129 unique alleles were detected in the species studied. A. rigonii exhibited the largest number of unique alleles (75), indicating that this species is highly differentiated. AMOVA and genetic distance analyses confirmed the genetic differentiation between the wild Arachis species. The majority of SSR alleles were detected exclusively in the wild species and not in A. hypogaea, indicating that directional selection or the hitchhiking effect has played an important role in the domestication of the cultivated peanut. The 75 accessions were grouped into three clusters based on population structure and phylogenic analysis, consistent with their taxonomic sections, species and genome types. A. villosa and A. batizocoi were grouped with A. hypogaea, suggesting the close relationship between these two diploid wild species and the cultivated peanut. Considerable phenotypic variation in Oil Content was observed among different sections and species. Nine alleles were identified as associated with Oil Content based on association analysis, of these, three alleles were associated with higher Oil Content but were absent in the cultivated peanut. The results demonstrated that there is great potential to increase the Oil Content in A. hypogaea by using the wild Arachis germplasm.
Li Huang - One of the best experts on this subject based on the ideXlab platform.
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abundant microsatellite diversity and Oil Content in wild arachis species
PLOS ONE, 2012Co-Authors: Li Huang, Huifang Jiang, Xiaoping Ren, Yuning Chen, Yingjie Xiao, Xinyan Zhao, Mei Tang, Jiaquan Huang, Hari D Upadhyaya, Boshou LiaoAbstract:The peanut (Arachis hypogaea) is an important Oil crop. Breeding for high Oil Content is becoming increasingly important. Wild Arachis species have been reported to harbor genes for many valuable traits that may enable the improvement of cultivated Arachis hypogaea, such as resistance to pests and disease. However, only limited information is available on variation in Oil Content. In the present study, a collection of 72 wild Arachis accessions representing 19 species and 3 cultivated peanut accessions were genotyped using 136 genome-wide SSR markers and phenotyped for Oil Content over three growing seasons. The wild Arachis accessions showed abundant diversity across the 19 species. A. duranensis exhibited the highest diversity, with a Shannon-Weaver diversity index of 0.35. A total of 129 unique alleles were detected in the species studied. A. rigonii exhibited the largest number of unique alleles (75), indicating that this species is highly differentiated. AMOVA and genetic distance analyses confirmed the genetic differentiation between the wild Arachis species. The majority of SSR alleles were detected exclusively in the wild species and not in A. hypogaea, indicating that directional selection or the hitchhiking effect has played an important role in the domestication of the cultivated peanut. The 75 accessions were grouped into three clusters based on population structure and phylogenic analysis, consistent with their taxonomic sections, species and genome types. A. villosa and A. batizocoi were grouped with A. hypogaea, suggesting the close relationship between these two diploid wild species and the cultivated peanut. Considerable phenotypic variation in Oil Content was observed among different sections and species. Nine alleles were identified as associated with Oil Content based on association analysis, of these, three alleles were associated with higher Oil Content but were absent in the cultivated peanut. The results demonstrated that there is great potential to increase the Oil Content in A. hypogaea by using the wild Arachis germplasm.
Hanzhong Wang - One of the best experts on this subject based on the ideXlab platform.
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Seed structure characteristics to form ultrahigh Oil Content in rapeseed.
PloS one, 2013Co-Authors: Wei Hua, Xinfa Wang, Guihua Liu, Zhang Liang, Linbin Deng, Hao Wanjun, Hanzhong WangAbstract:Background Rapeseed (Brassica napus L.) is an important Oil crop in the world, and increasing its Oil Content is a major breeding goal. The studies on seed structure and characteristics of different Oil Content rapeseed could help us to understand the biological mechanism of lipid accumulation, and be helpful for rapeseed breeding. Methodology/Principal Findings Here we report on the seed ultrastructure of an ultrahigh Oil Content rapeseed line YN171, whose Oil Content is 64.8%, and compared with other high and low Oil Content rapeseed lines. The results indicated that the cytoplasms of cotyledon, radicle, and aleuronic cells were completely filled with Oil and protein bodies, and YN171 had a high Oil body organelle to cell area ratio for all cell types. In the cotyledon cells, Oil body organelles comprised 81% of the total cell area in YN171, but only 53 to 58% in three high Oil Content lines and 33 to 38% in three low Oil Content lines. The high Oil body organelle to cotyledon cell area ratio and the cotyledon ratio in seed were the main reasons for the ultrahigh Oil Content of YN171. The correlation analysis indicated that Oil Content is significantly negatively correlated with protein Content, but is not correlated with fatty acid composition. Conclusions/Significance Our results indicate that the Oil Content of YN171 could be enhanced by increasing the Oil body organelle to cell ratio for some cell types. The Oil body organelle to seed ratio significantly highly positively correlates with Oil Content, and could be used to predict seed Oil Content. Based on the structural analysis of different Oil Content rapeseed lines, we estimate the maximum of rapeseed Oil Content could reach 75%. Our results will help us to screen and identify high Oil Content lines in rapeseed breeding.
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Genetic analysis on Oil Content in rapeseed (Brassica napus L.)
Euphytica, 2009Co-Authors: Xinfa Wang, Guihua Liu, Qing Yang, Hua Wei, Liu Jing, Hanzhong WangAbstract:High Oil Content is one of the most important characteristics of rapeseed (Brassica napus L.) breeding. In order to understand the genetic basis of seed Oil Content, a series of reciprocal crosses between rapeseed parents with high Oil Content (53110, 61616 and 6F313), medium-Oil Content (Zhongshuang 9) and low Oil Content (51070 and 93275) were conducted. It was found that the Oil Content of F1 hybrid seeds in rapeseed was mainly controlled by the maternal genotype. The maternal effect value of Oil Content was estimated to be 0.86. The pollen parent had a xenia effect on Oil Content, estimated to be 0.14 which changed the mean value by 1.86 percent. The inheritance of Oil Content was studied in a set of 8 × 8 diallel crosses of different varieties. The results indicated that the inheritance of Oil Content could be explained by an additive-dominant-epistasis model. Although the dominant and additive effects played major roles and accounted for more than 70% of the total variance, there was also a small epistatic effect. The broad and narrow sense heritability of Oil Content was 83.88 and 36.94%, respectively. Based on the Oil Content differences between the reciprocal crosses in the same offspring generation (F1 and F2) in rapeseed, it could be concluded that there were significant cytoplasmic effects on Oil Content. In this study, two lines with significantly cytoplasmic effects, either positive or negative, were selected.
Geovani Soares De Lima - One of the best experts on this subject based on the ideXlab platform.
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Seed coat specific weight and endosperm composition define the Oil Content of castor seed
Industrial Crops and Products, 2015Co-Authors: Liv Soares Severino, Bruna S.s. Mendes, Geovani Soares De LimaAbstract:Abstract Seed Oil Content is an important characteristic for castor ( Ricinus communis ). Studies were performed in order to detail how Oil Content varies among seeds and which seed characteristics are associated with the variability in Oil Content among genotypes. It was found that Oil Content is higher in large than in small seeds because of the reduced relative weight of the seed coat. The seed Oil Content of 40 genotypes varied between 34.6 and 56.6%. The variation in seed Oil Content was not associated with seed weight, but it was explained by the relative weight of the seed coat (relative weight) and by the composition of the nut (embryo + endosperm). Comparing castor seeds with 35 and 56% of Oil Content, the relative weight of the seed coat was reduced from 26.9 to 19.1%, and the nut Oil Content was increased from 50.3 to 71.3%. Reduced relative weight of the seed coat was associated with thinner seed coat.
