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Comparative Genomics Suggests That an Ancestral Polyploidy Event Leads to Enhanced Root Nodule Symbiosis in the Papilionoideae

文献类型：期刊论文

作者Li QG1,2; Zhang L1; Li CH1,3; Dunwell JM4; Zhang YM[*]1
刊名MOLECULAR BIOLOGY AND EVOLUTION
出版日期2013
卷号30期号:12页码:2602-2611
关键词legume nitrogen fixation papilionoid polyploidy root nodule symbiosis
通讯作者soyzhang@njau.edu.cn
合作状况其它
英文摘要Root nodule symbiosis (RNS) is one of the most efficient biological systems for nitrogen fixation and it occurs in 90% of genera in the Papilionoideae, the largest subfamily of legumes. Most papilionoid species show evidence of a polyploidy event that occurred approximately 58 Ma. Although polyploidy is considered to be an important evolutionary force in plants, the role of this papilionoid polyploidy event, especially its association with RNS, is not understood. In this study, we explored this role using an integrated comparative genomic approach and conducted gene expression comparisons and gene ontology enrichment analyses. The results show the following: 1) Approximately a quarter of the papilionoid-polyploidy-derived duplicate genes are retained; 2) there is a striking divergence in the level of expression of gene duplicate pairs derived from the polyploidy event; and 3) the retained duplicates are frequently involved in the processes crucial for RNS establishment, such as symbiotic signaling, nodule organogenesis, rhizobial infection, and nutrient exchange and transport. Thus, we conclude that the papilionoid polyploidy event might have further refined RNS and induced a more robust and enhanced symbiotic system. This conclusion partly explains the widespread occurrence of the Papilionoideae.
收录类别SCI
资助信息This work was supported by the National Natural Science Foundation of China (grant 30971848), Fundamental Research Funds for the Central Universities (grants KYT201002 and KYZ201202-9), the Specialized Research Fund for the Doctoral Programs of Higher Education (grants 20100097110035 and 20120097110023), 111 project (grant B08025), and the Priority Academic Program Development of Jiangsu Higher Education Institutions.
语种英语
WOS记录号WOS:000327793000006
公开日期2014-10-22
源URL[http://159.226.149.42:8088/handle/152453/8132]  
专题昆明动物研究所_遗传资源与进化国家重点实验室
作者单位1.State Key Laboratory of Crop Genetics and Germplasm Enhancement, Department of Crop Genetics and Breeding, College of Agriculture, Nanjing Agricultural University, Nanjing, People’s Republic of China
2.State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, People’s Republic of China
3.Henan Sesame Research Center, Henan Academy of Agricultural Sciences, Zhengzhou, People’s Republic of China
4.School of Agriculture, Policy and Development, University of Reading, Reading, United Kingdom
推荐引用方式
GB/T 7714		 Li QG,Zhang L,Li CH,et al. Comparative Genomics Suggests That an Ancestral Polyploidy Event Leads to Enhanced Root Nodule Symbiosis in the Papilionoideae[J]. MOLECULAR BIOLOGY AND EVOLUTION,2013,30(12):2602-2611.
APA Li QG,Zhang L,Li CH,Dunwell JM,&Zhang YM[*].(2013).Comparative Genomics Suggests That an Ancestral Polyploidy Event Leads to Enhanced Root Nodule Symbiosis in the Papilionoideae.MOLECULAR BIOLOGY AND EVOLUTION,30(12),2602-2611.
MLA Li QG,et al."Comparative Genomics Suggests That an Ancestral Polyploidy Event Leads to Enhanced Root Nodule Symbiosis in the Papilionoideae".MOLECULAR BIOLOGY AND EVOLUTION 30.12(2013):2602-2611.

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来源：昆明动物研究所

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