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Comprehensive metabolomic, proteomic and physiological analyses of grain yield reduction in rice under abrupt drought–flood alternation stress
Author(s) -
Xiong QiangQiang,
Shen TianHua,
Zhong Lei,
Zhu ChangLan,
Peng XiaoSong,
He XiaoPeng,
Fu JunRu,
Ouyang LinJuan,
Bian JianMin,
Hu LiFang,
Sun XiaoTang,
Xu Jie,
Zhou HuiYing,
He HaoHua,
Chen XiaoRong
Publication year - 2019
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/ppl.12901
Subject(s) - grain yield , metabolomics , alternation (linguistics) , drought stress , flood myth , yield (engineering) , agronomy , biology , environmental science , bioinformatics , geography , materials science , linguistics , archaeology , metallurgy , philosophy
Abrupt drought–flood alternation (T1) is a meteorological disaster that frequently occurs during summer in southern China and the Yangtze river basin, often causing a significant loss of rice production. In this study, the response mechanism of yield decline under abrupt drought–flood alternation stress at the panicle differentiation stage was analyzed by looking at the metabolome, proteome as well as yield and physiological and biochemical indexes. The results showed that drought and flood stress caused a decrease in the yield of rice at the panicle differentiation stage, and abrupt drought–flood alternation stress created a synergistic effect for the reduction of yield. The main reason for the decrease of yield per plant under abrupt drought–flood alternation was the decrease of seed setting rate. Compared with CK0 (no drought and no flood), the net photosynthetic rate and soluble sugar content of T1 decreased significantly and its hydrogen peroxidase, superoxide dismutase, peroxidase activity increased significantly. The identified differential metabolites and differentially expressed proteins indicated that photosynthesis metabolism, energy metabolism pathway and reactive oxygen species response have changed strongly under abrupt drought–flood alteration stress, which are factors that leads to the rice grain yield reduction.