气候变化领域集成服务门户(CCPortal): Sequential submergence and drought induce yield loss in rice by affecting redox homeostasis and source-to-sink sugar transport

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DOI	10.1016/j.fcr.2024.109362
	Sequential submergence and drought induce yield loss in rice by affecting redox homeostasis and source-to-sink sugar transport
	Kumar, Santosh; Basu, Sahana; Choudhary, A. K.; Shekhar, Shashi; Mishra, J. S.; Kumar, Sanjeev; Shubha, Kumari; Dubey, Rachana; Mondal, Surajit; Dwivedi, S. K.; Bhakta, N.; Kumar, Rakesh; Sarkar, Sujoy; Dhamudia, Srustidhar; Kumari, Sunny; Das, Anup; Kumar, Arvind; Kumar, Gautam
发表日期	2024
ISSN	0378-4290
EISSN	1872-6852
起始页码	310
卷号	310
英文摘要	Rice cultivation in the rainfed ecosystems of the eastern Indo-Gangetic plain (EIGP) frequently comes across abrupt alternation of submergence and drought during the vegetative and reproductive stages, respectively, within one growing season, and this may be exaggerated with climate change. Therefore, development of combined submergence and drought tolerant rice genotypes might be a timely effort to meet the growing food demand. However, till date no study has been executed on the combination of submergence and drought stress in the field conditions of the EIGP. The present study elucidated the performance of near isogenic lines (NILs) of rice developed for the EIGP through marker assisted pyramiding of quantitative trait loci (QTL) associated with submergence (Sub1) and drought (qDTY1.1 + qDTY2.1 + qDTY3.1) in the background of the popular, high yielding Indo-Gangetic rice variety Swarna. This study included the screening of sixteen rice NILs along with the check varieties Swarna and Swarna Sub1 under cumulative submergence and drought for four consecutive rice growing years (2019-2022). Individual submergence or drought or cumulative stress caused 76, 47, and 85% respective loss in average productivity compared to that of the control conditions. However, rice NILs IR96321-558-563-B-2-1-1, IR96321-315-323-B-3-1-3, IR96321-315-294-B-1-1-1-1, and IR96321-558-209B-6-1-1 showed outstanding cumulative stress tolerance with sustainable photosynthetic performance and membrane stability. Furthermore, these rice NILs exhibited effective reactive oxygen species scavenging mediated by enhanced antioxidant enzyme activities in source (flag-leaf) and sink (anther) tissues that contributed to conserving the source-to-sink mobilization, leading to improved pollen viability and spikelet fertility under sequential stress conditions. The study identified combined submergence-drought tolerant rice NILs along with an optimum yield level to support global food security and also represented a model crop system to establish mechanisms of multi-stress tolerance in plants.
英文关键词	Antioxidant enzyme; Cumulative submergence-drought; Grain yield; Reactive oxygen species; Rice; Spikelet fertility
语种	英语
WOS研究方向	Agriculture
WOS类目	Agronomy
WOS记录号	WOS:001224793000001
来源期刊	FIELD CROPS RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/290850
作者单位	Indian Council of Agricultural Research (ICAR); ICAR - ICAR Research Complex for Eastern Region; Central University of South Bihar; Banaras Hindu University (BHU); CGIAR; International Crops Research Institute for the Semi-Arid-Tropics (ICRISAT)
推荐引用方式 GB/T 7714	Kumar, Santosh,Basu, Sahana,Choudhary, A. K.,et al. Sequential submergence and drought induce yield loss in rice by affecting redox homeostasis and source-to-sink sugar transport[J],2024,310.
APA	Kumar, Santosh.,Basu, Sahana.,Choudhary, A. K..,Shekhar, Shashi.,Mishra, J. S..,...&Kumar, Gautam.(2024).Sequential submergence and drought induce yield loss in rice by affecting redox homeostasis and source-to-sink sugar transport.FIELD CROPS RESEARCH,310.
MLA	Kumar, Santosh,et al."Sequential submergence and drought induce yield loss in rice by affecting redox homeostasis and source-to-sink sugar transport".FIELD CROPS RESEARCH 310(2024).