Effects of IAA on physiological response to aluminum stress and DNA damage of Trichosanthes kirilowii .

To investigate the physiological response of IAA (indoleacetic acid) to under aluminum stress and the mitigation of DNA damage, the effects of IAA (0, 10, 25, 50, 75 μmol·L denoted by I , I , I , I and I , respectively) on antioxidant enzyme activity, malondialdehyde (MDA), photosynthetic characteri...

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Published inYing yong sheng tai xue bao Vol. 31; no. 12; p. 4235
Main Authors Li, Wen-Jing, Mao, Ji-Long, Wu, Yu-Huan, Tang, Ke, Pan, Fang-Fang, Fang, Fang, Cai, Miao-Zhen, Liu, Peng
Format Journal Article
LanguageChinese
Published China 01.12.2020
Subjects
Aluminum
Catalase
DNA Damage
Seedlings
Stress, Physiological
Superoxide Dismutase
Trichosanthes
IAA
aluminum stress
DNA damage
Trichosanthes kirilowii
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Summary:To investigate the physiological response of IAA (indoleacetic acid) to under aluminum stress and the mitigation of DNA damage, the effects of IAA (0, 10, 25, 50, 75 μmol·L denoted by I , I , I , I and I , respectively) on antioxidant enzyme activity, malondialdehyde (MDA), photosynthetic characteristics, root activity, chlorophyll content and DNA damage of two varieties of under 300 and 800 μmol·L aluminum environment (denoted by Al and Al , respectively) were examined in hydroponic culture experiments with Hebei Anguo (aluminium tolerant variety) and Zhejiang Puyang (aluminum sensitive variety). The results showed that the activities of superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT), photosynthesis ability, and root activity of both varieties were inhibited to different degrees by aluminum stress, MDA content was significantly increased, and DNA damage was aggravated. The maximum increase of SOD, CAT and POD activities in Anguo and Puyang under aluminum stress by IAA application were 15.0%,
ISSN:1001-9332
DOI:10.13287/j.1001-9332.202012.009