干旱区生态环境知识资源中心(Arid): Adaptive evolution of rbcL in Reaumuria soongarica (Tamaricaceae)

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	Adaptive evolution of rbcL in Reaumuria soongarica (Tamaricaceae)
	Qian Chaoju; Gu Menghe; Yin Hengxia; Shi Yong; Yin Chengliang; Yan Xia; Ma Xiaofei
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2017
卷号	9 期号:1 页码:78-88
英文摘要	In the field of phylogenetic analyses, the rbcL gene encoded large subunit Ribulose-1,5-biphosphate carboxylase/ oxygenase (Rubisco, EC_4.1.1.39), which plays a crucial role in the process of photosynthesis for most terrestrial plants, has been considered to be conserved; however, recent controversy regarding rbcL conservation has appeared since it was proposed to be under natural selection within all principal lineages of land plants. In this study, by examining the variation of DNA and protein sequences among 17 species in the family Tamaricaceae, three nonsynonymous mutations were identified to be under positive selection. The favored sites were located in the alph-helix domains of Rubisco, with decreased hydrophobicity and increased entropy, which could facilitate CO_2 penetration into the active site of Rubisco. We also found that the expression level of rbcL in different genotypes of Reaumuria soongarica shifted in response to various stresses such as drought, temperature, salt, and light. This study not only sheds light on the functional/structural features of Rubisco in the evolution scenarios from C_3-like into C_4 in Tamaricaceae but also provides useful information on directing genetic performance to enhance photosynthesis efficiency of desert plants for sustaining fragile desert ecosystems; furthermore, it promotes the ability to cope with desert aridification and global warming.
英文关键词	rbcL gene Reaumuria soongarica Tamaricaceae adaptive evolution
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:5923145
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335762
作者单位	Qian Chaoju, Department of Ecology and Agriculture Research, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Gansu Province, Lanzhou, Gansu 730000, China.; Yin Hengxia, Department of Ecology and Agriculture Research, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Gansu Province, Lanzhou, Gansu 730000, China.; Shi Yong, Department of Ecology and Agriculture Research, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Gansu Province, Lanzhou, Gansu 730000, China.; Yin Chengliang, Department of Ecology and Agriculture Research, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Key Laboratory of Stress Physiology and Ecology in Cold and Arid Regions, Gansu P...
推荐引用方式 GB/T 7714	Qian Chaoju,Gu Menghe,Yin Hengxia,et al. Adaptive evolution of rbcL in Reaumuria soongarica (Tamaricaceae)[J],2017,9(1):78-88.
APA	Qian Chaoju.,Gu Menghe.,Yin Hengxia.,Shi Yong.,Yin Chengliang.,...&Ma Xiaofei.(2017).Adaptive evolution of rbcL in Reaumuria soongarica (Tamaricaceae).Sciences in Cold and Arid Regions,9(1),78-88.
MLA	Qian Chaoju,et al."Adaptive evolution of rbcL in Reaumuria soongarica (Tamaricaceae)".Sciences in Cold and Arid Regions 9.1(2017):78-88.