High Nighttime Temperature Induces Antioxidant Molecule Perturbations in Heat-Sensitive and Heat-Tolerant Coisogenic Rice ( Oryza sativa) Strains.
High Nighttime Temperature Induces Antioxidant Molecule Perturbations in Heat-Sensitive and Heat-Tolerant Coisogenic Rice ( Oryza sativa) Strains.
复制标题
夜间高温度会导致热敏性和耐热性水稻（Oryza sativa）菌株中的抗氧化分子扰动。
DOI：
10.1021/acs.jafc.8b04425
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发表时间：
2018
影响因子：
6.1
通讯作者：
Liao Jiang-Lin
中科院分区：
文献类型：
--
作者：
Lei Gang;Zhang Hong-Yu;Wang Zhao-Hai;Wei Ling-Xia;Fu Pei;Song Jian-Bo;Fu Dong-Hui;Huang Ying-Jin;Liao Jiang-Lin
全球变暖导致的气温升高，特别是在夜间，对水稻产量和品质都是不利的。利用代谢组学方法检测和比较了种子成熟第一阶段具有不同耐热性的水稻同基因品系在夜间高温诱导下的短期分子扰动。与热敏品系相比，耐热品系的抗氧化剂分子丰度较高，而参与光合作用、核苷酸分解代谢和S-腺苷蛋氨酸循环的分子丰度变化不大。因此，我们认为耐热菌株中高丰度的抗氧化剂分子减轻了细胞的氧化胁迫，保护了光合作用、核苷酸分解代谢和SAM循环，导致了良好的籽粒灌浆。
Global warming-associated increases in temperature, particularly at nighttime, are detrimental to rice yield and quality. Metabolomic profiling was used to examine and compare the short-term extreme high nighttime temperature-induced molecular perturbations in rice ( Oryza sativa) coisogenic strains with contrasting heat-tolerances at the first stage of seed ripening. Compared to the heat-sensitive strain, antioxidant molecules were higher in abundance in the heat-tolerant strain, whereas the abundances of molecules involved in photosynthesis, nucleotide catabolism, and the S-adenosylmethionine (SAM) cycle varied only slightly. Thus, we proposed that the high abundance of antioxidant molecules in the heat-tolerant strain alleviated cellular oxidative stress, which protected photosynthesis, nucleotide catabolism, and the SAM cycle, leading to good grain filling.