Genome of Plant Maca (Lepidium meyenii) Illuminates Genomic Basis for High-Altitude Adaptation in the Central Andes

	Genome of Plant Maca (Lepidium meyenii) Illuminates Genomic Basis for High-Altitude Adaptation in the Central Andes
	Zhang J 1; Tian Y 2,3; Zeng Y 6,7; Zhang JJ 8; Ma X 3; Tan YT 3; Long N 9; Wang YZ 9; Yan L 4; Ma YJ 9
刊名	MOLECULAR PLANT
	2016
卷号	9 期号:7 页码:1066-1077
关键词	genome sequencing whole-genome duplication high-altitude adaptation Brassicaceae Lepidium leaf morphogenesis self-incompatibility
其他题名	loyalyang@163.com;wchenntr@gmail.com;shengj@ ynau.edu.cn
通讯作者	fafuzhang@163.com ; loyalyang@163.com ; wchenntr@gmail.com ; shengj@ ynau.edu.cn
英文摘要	Maca (Lepidium meyenii Walp, 2n=8x =64), belonging to the Brassicaceae family, is an economic plant cultivated in the central Andes sierra in Peru (4000-4500m). Considering that the rapid uplift of the central Andes occurred 5-10 million years ago (Ma), an evolutionary question arises regarding how plants such as maca acquire high-altitude adaptation within a short geological period. Here, we report the high-quality genome assembly of maca, in which two closely spaced maca-specific whole-genome duplications (WGDs; similar to 6.7 Ma) were identified. Comparative genomic analysis between maca and closely related Brassicaceae species revealed expansions of maca genes and gene families involved in abiotic stress response, hormone signaling pathway, and secondary metabolite biosynthesis via WGDs. The retention and subsequent functional divergence of many duplicated genes may account for the morphological and physiological changes (i.e., small leaf shape and self-fertility) in maca in a high-altitude environment. In addition, some duplicated maca genes were identified with functions in morphological adaptation (i.e., LEAF CURLING RESPONSIVENESS) and abiotic stress response(i.e., GLYCINE-RICHRNA-BINDING PROTEINS and DNA-DAMAGE-REPAIR/TOLERATION 2) under positive selection. Collectively, the maca genome provides useful information to understand the important roles of WGDs in the high-altitude adaptation of plants in the Andes.
收录类别	SCI
资助信息	This work was supported by the Pilot Project for Establishing Social Ser- vice System through Agricultural Science and Education in Yunnan Prov- ince, Medical Plant Unit (2014NG003).
语种	英语
内容类型	期刊论文
源URL	[http://159.226.149.26:8080/handle/152453/10770]
专题	昆明动物研究所_基因起源组昆明动物研究所_遗传资源与进化国家重点实验室
作者单位	1.College of Life Science, Huazhong University of Science and Technology, Wuhan 430074, China 2.College of Life Sciences, Jilin University, Changchun 130012, China 3.Key Laboratory of Pu-erh Tea Science, Ministry of Education, Yunnan Agricultural University, Kunming 650201, China 4.Pu’er Institute of Pu-erh Tea, Pu’er 665000, China 5.Yunnan Research Center on Good Agricultural Practice for Dominant Chinese Medicinal Materials, Yunnan Agricultural University, Kunming 650201, China 6.State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China 7.University of Chinese Academy of Sciences, Beijing 100049, China 8.School of Science and Information Engineering, Yunnan Agricultural University, Kunming 650201, China 9.College of Life Science, Kunming University of Science and Technology, Kunming 650504, China 10.Public Technical Service Center, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
推荐引用方式 GB/T 7714	Zhang J,Tian Y,Zeng Y,et al. Genome of Plant Maca (Lepidium meyenii) Illuminates Genomic Basis for High-Altitude Adaptation in the Central Andes[J]. MOLECULAR PLANT,2016,9(7):1066-1077.
APA	Zhang J.,Tian Y.,Zeng Y.,Zhang JJ.,Ma X.,...&Wang X.(2016).Genome of Plant Maca (Lepidium meyenii) Illuminates Genomic Basis for High-Altitude Adaptation in the Central Andes.MOLECULAR PLANT,9(7),1066-1077.
MLA	Zhang J,et al."Genome of Plant Maca (Lepidium meyenii) Illuminates Genomic Basis for High-Altitude Adaptation in the Central Andes".MOLECULAR PLANT 9.7(2016):1066-1077.