Cassava genome from a wild ancestor to cultivated varieties
| Autor: | Nanna Heinz, Songbi Chen, Xincheng Zhou, Wenbin Liao, Wenbin Hu, Jinli Pei, Bin Liu, Weixiong Zhang, Zhicheng Wu, Luiz Joaquim Castelo Branco Carvalho, Jun Yang, Kevin Galens, Xin Chen, Anping Guo, Meili Chen, Jianchun Guo, Fu Yuhua, Peng Zhang, Changying Zeng, Haiyan Wang, Sandra Ott, Zhengwen Zhang, Gong Xiao, Zhiqiang Xia, Rubini Kannangara, Shujuan Wang, Shixiang Sun, Shengkui Zhang, Jiajie Wu, Mengbin Ruan, Pinghua Li, Henan Ceballos, Wenli Zhu, Songnian Hu, Chen Yeyuan, Silin Zhong, Meizhen Hu, Ping-An Ma, Guodao Liu, Jiaming Zhang, Shuigeng Zhou, Kirsten Jørgensen, Pablo D. Rabinowicz, Jingjing Xue, Luke J. Tallon, Meiling Zou, Jie Huang, Xiaojing Lu, Qingqun Yao, Yang Zhang, Kaimian Li, Guojiang Wu, Ming-Cheng Luo, Xinyue Liu, Frank M. You, Hong-Bin Zhang, Wenquan Wang, Qinghuang Wang, Birger Lindberg Møller, Qunfeng Lou, L. Augusto Becerra Lopez-Lavalle, Martin A. Fregene, Jing Xia, Jingfa Xiao, Hui Liu, Binxiao Feng, Zhengxu Li, Rebecca Louise Neale, Ming Peng, Wenjun Ou, Kun Pan, Mingfu Wen, Peng Ling, Maya Bonde, Yaqin Ma, Cheng Lu, Jingxing Liu, Jianqiu Ye, Feifei An, Ying Wang |
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| Rok vydání: | 2014 |
| Předmět: |
Manihot
Plant genetics Molecular Sequence Data General Physics and Astronomy Biology Genome General Biochemistry Genetics and Molecular Biology Article Crop Evolution Molecular Genetic variation Botany Photosynthesis Selection Genetic Domestication Gene Phylogeny Plant Proteins Abiotic component Multidisciplinary food and beverages Genetic Variation Starch General Chemistry Cyanogenic Glucoside Genome Plant |
| Zdroj: | Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | Cassava is a major tropical food crop in the Euphorbiaceae family that has high carbohydrate production potential and adaptability to diverse environments. Here we present the draft genome sequences of a wild ancestor and a domesticated variety of cassava and comparative analyses with a partial inbred line. We identify 1,584 and 1,678 gene models specific to the wild and domesticated varieties, respectively, and discover high heterozygosity and millions of single-nucleotide variations. Our analyses reveal that genes involved in photosynthesis, starch accumulation and abiotic stresses have been positively selected, whereas those involved in cell wall biosynthesis and secondary metabolism, including cyanogenic glucoside formation, have been negatively selected in the cultivated varieties, reflecting the result of natural selection and domestication. Differences in microRNA genes and retrotransposon regulation could partly explain an increased carbon flux towards starch accumulation and reduced cyanogenic glucoside accumulation in domesticated cassava. These results may contribute to genetic improvement of cassava through better understanding of its biology. Cassava is a major source of food in tropical and subtropical regions. Here the authors sequence the genomes of wild and domesticated cassava varieties and identify genes that have been selected for and against during the evolution and domestication of this economically important crop. |
| Databáze: | OpenAIRE |
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