干旱区生态环境知识资源中心(Arid): Deciphering the molecular basis for photosynthetic parameters in Bambara groundnut (Vigna subterranea L. Verdc) under drought stress

Arid

DOI	10.1186/s12870-023-04293-w
	Deciphering the molecular basis for photosynthetic parameters in Bambara groundnut (Vigna subterranea L. Verdc) under drought stress
	Gao, Xiuqing; Chai, Hui Hui; Ho, Wai Kuan; Mayes, Sean; Massawe, Festo
通讯作者	Gao, XQ
来源期刊	BMC PLANT BIOLOGY
ISSN	1471-2229
出版年	2023
卷号	23 期号:1
英文摘要	BackgroundAssessment of segregating populations for their ability to withstand drought stress conditions is one of the best approaches to develop breeding lines and drought tolerant varieties. Bambara groundnut (Vigna subterranea L. Verdc.) is a leguminous crop, capable of growing in low-input agricultural systems in semi-arid areas. An F-4 bi-parental segregating population obtained from S19-3 x DodR was developed to evaluate the effect of drought stress on photosynthetic parameters and identify QTLs associated with these traits under drought-stressed and well-watered conditions in a rainout shelter.ResultsStomatal conductance (gs), photosynthesis rate (A), transpiration rate (E) and intracellular CO2 (Ci) were significantly reduced (p < 0.05) while water use efficiency (WUE) was significantly increased (p < 0.05) under drought-stressed conditions. A strong linear correlation was observed between gs, WUE, A, E and Ci under both water regimes. The variability between different water treatment, among individual lines and the interaction between lines and environment for photosynthetic parameters provides resources for superior lines selection and drought resistant variety improvement. Significant QTL for gs and F-V/F-M under well-watered conditions were mapped on LG5 and LG3, respectively, with more than 20% of the PVE, which could be considered as the major QTL to control these traits. Five clustered QTLs for photosynthetic traits under drought-stressed and well-watered conditions were mapped on LG5, LG6A, LG10 and LG11, respectively.ConclusionsSignificant and putative QTLs associated with photosynthetic parameters and the effect of drought stress on these traits have been revealed by QTL linkage mapping and field experiment in the F-4 segregating population derived from S19-3 x DodR in bambara groundnut. The study provides fundamental knowledge of how photosynthetic traits response to drought stress and how genetic features control these traits under drought-stressed and well-watered conditions in bambara groundnut.
英文关键词	Bambara groundnut Drought stress QTL Stomatal conductance F-V F-M
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000996808200001
WOS关键词	WATER-DEFICIT STRESS ; CICER-ARIETINUM L. ; STOMATAL CONDUCTANCE ; IDENTIFICATION ; YIELD ; FLUORESCENCE ; ADAPTATION ; TOLERANCE ; TRAITS ; QTLS
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395589
推荐引用方式 GB/T 7714	Gao, Xiuqing,Chai, Hui Hui,Ho, Wai Kuan,et al. Deciphering the molecular basis for photosynthetic parameters in Bambara groundnut (Vigna subterranea L. Verdc) under drought stress[J],2023,23(1).
APA	Gao, Xiuqing,Chai, Hui Hui,Ho, Wai Kuan,Mayes, Sean,&Massawe, Festo.(2023).Deciphering the molecular basis for photosynthetic parameters in Bambara groundnut (Vigna subterranea L. Verdc) under drought stress.BMC PLANT BIOLOGY,23(1).
MLA	Gao, Xiuqing,et al."Deciphering the molecular basis for photosynthetic parameters in Bambara groundnut (Vigna subterranea L. Verdc) under drought stress".BMC PLANT BIOLOGY 23.1(2023).