Exogenous salicylic acid alleviates halosulfuron-methyl toxicity by coordinating the antioxidant system and improving photosynthesis in soybean (Glycine max Merr.)
Exogenous salicylic acid alleviates halosulfuron-methyl toxicity by coordinating the antioxidant system and improving photosynthesis in soybean (Glycine max Merr.)
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外源水杨酸通过协调抗氧化系统和改善大豆 (Glycine max Merr.) 的光合作用来减轻卤磺隆的毒性
DOI：
10.1007/s11738-020-03075-3
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发表时间：
2020-05
影响因子：
2.6
通讯作者：
Hui-Hua Tan
中科院分区：
文献类型：
--
作者：
Yuan-Fu Li;Lu-Lu Huang;Xiao-Liang Liu;Xue-Sheng Li;Hui-Hua Tan
氯磺隆是一种广泛应用于农业生产的除草剂，但它会影响非靶标植物的生长，诱导植物产生过量的活性氧，干扰光合作用，造成严重的非生物胁迫。本研究以大豆幼苗为材料，研究了大豆幼苗对高渗胁迫的反应以及外源水杨酸（SA）对大豆幼苗高渗胁迫的缓解作用。0.005、0.05、0.5 mg/L的水杨酸（0.1 mM）与水杨酸（0.005、0.05、0.5 mg/L）联合处理能促进种子萌发、根和芽的生长，并显著提高根和芽的干重。叶绿素荧光参数、气体交换参数和光合色素含量均比单独处理有显著提高。SA预处理显著降低了HSM处理下丙二醛、超氧阴离子自由基（O2·−）和H2 O2含量。此外，水杨酸预处理降低了超氧化物歧化酶（SOD）、过氧化物酶（POD）和过氧化氢酶（CAT）的活性，但提高了抗坏血酸过氧化物酶（APX）和谷胱甘肽还原酶（GR）的活性。说明SA可通过提高APX和GR活性，保护光合系统，减轻HSM的毒害作用。
Halosulfuron-methyl (HSM) is an herbicide widely used in agricultural production, but it could affect the growth of non-target plants, induce plants produce excessive reactive oxygen species, disturb photosynthesis, and cause severe abiotic stress. In this study, the response of soybean seedlings to HSM stress and the mitigation effect of exogenous salicylic acid (SA) on HSM toxicity were studied. In comparison to HSM alone, SA (0.1 mM) pretreatment in combination with HSM (0.005, 0.05, 0.5 mg/L) promoted seed germination, root and shoot growth, and significantly improved the dry weight of root and shoot. The combination treatment also led to significant improvement in chlorophyll fluorescence parameters, gas exchange parameters and photosynthetic pigments content compared with HSM alone. Malondialdehyde, superoxide radical (O2·−) and H2O2 contents under HSM treatment were significantly reduced by SA pretreatment. In addition, the activities of the superoxide dismutase, peroxidase and catalase were down-regulated by SA pretreatment under HSM treatment, but the activities of ascorbate peroxidase (APX) and glutathione reductase (GR) were up-regulated. These results showed that SA could positively mitigate HSM toxicity by increasing APX and GR activities and protecting the photosynthetic system.
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影响因子：
6.8
作者：
Kaya, Armagan;Yigit, Emel
通讯作者：
Yigit, Emel
影响因子：
56.9
作者：
DELANEY, TP;UKNES, S;RYALS, J
通讯作者：
RYALS, J
影响因子：
3.7
作者：
Yuan X;Zhang L;Ning N;Wen Y;Dong S;Yin M;Guo M;Wang B;Feng L;Guo P
通讯作者：
Guo P
DOI：
10.1002/9781119324928
发表时间：
2017-11
期刊：
--
影响因子：
--
作者：
V. Singh;Samiksha Singh;D. Tripathi;S. Prasad;D. Chauhan
通讯作者：
V. Singh;Samiksha Singh;D. Tripathi;S. Prasad;D. Chauhan
影响因子：
4.9
作者：
Y. Nakano;K. Asada
通讯作者：
Y. Nakano;K. Asada