Negative regulation of tobacco cold stress tolerance by NtPhyA

Pi, Kai; Luo, Jiajun; Lu, Anbin; Chen, Gang; Long, Benshan; Zhang, Jingyao; Mo, Zejun; Duan, Lili; Liu, Renxiang

doi:10.1016/j.plaphy.2023.108153

Cited by 4 publications

(1 citation statement)

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“…ROS are known to be involved in signal transduction and physiological processes in plants [43,44]. Abiotic stressors, such as drought, salt, and cold, often cause ROS accumulation, but a high content of ROS often leads to cell membrane damage and can even cause death [45,46]. It is believed that the antioxidant enzymes, including CAT, SOD, and POD, play a crucial role in regulating the homeostasis of ROS [47].…”

Section: Discussionmentioning

confidence: 99%

Overexpression of NB-LRR Gene AtRPM1(D505V) Improved Drought and Salt Resistance and Decreased Cold Tolerance in Transgenic Rice

Li,

Zhou,

Liu

et al. 2024

Agronomy

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Abiotic stimuli severely restrict the growth and development of plants, resulting in massive losses in the quality and yield of crops. Exploring genes that can improve crop tolerance to abiotic stress is important. In a previous study, we found that overexpression of the Arabidopsis nucleotide-binding domain leucine-rich repeat (NB-LRR) gene AtRPM1(D505V) increased disease resistance in rice. In this research, we found that AtRPM1(D505V) transgenic plants were more sensitive to abscisic acid (ABA) than wild type (WT) plants. Abiotic-stress resistance in AtRPM1(D505V) transgenic plants was investigated. We found that AtRPM1(D505V) transgenic plants exhibited improved resistance to drought and salt stress; the phonotype and survival rates of transgenic rice were better than WT plants. The expression of stress responsive genes including OsDREB2A, OsDREB2B, OsRD22, and OsRD29A were significantly upregulated in AtRPM1(D505V) overexpressed plants than in WT plants. Moreover, the activities of catalase (CAT), superoxide dismutase (SOD), and peroxidase (POD) were significantly increased in AtRPM1(D505V) overexpressed plants than in WT plants under drought and salt stress. Under cold stress, the expression of stress responsive genes and the activities of antioxidant enzymes in AtRPM1(D505V) transgenic plants were significantly lower than in WT plants. Our research demonstrated that AtRPM1(D505V) confers drought and salt resistance to transgenic rice. Therefore, AtRPM1(D505V) could act as a potential candidate gene to cultivate drought- and salt-tolerant plants.

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