Anhui Agricultural University Wang Songhu's research team clarified the role of chloroplast reverse signaling in promoting the salt tolerance of plants

Anhui Agricultural University Wang Songhu's research team clarified the role of chloroplast reverse signaling in promoting the salt tolerance of plants

Anhui Agricultural University Wang Songhu's research team clarified the role of chloroplast reverse signaling in promoting plant salt tolerance response Anhui Agricultural University's Wang Songhu research team clarified the role of chloroplast reverse signaling in promoting plant salt tolerance response

On July 13, 2021, Beijing time, Cell Reports published an online study of Anhui Agricultural University on the mechanism of plant chloroplast reactive oxygen free radicals (ROS) homeostasis under salt stress conditions, elucidating the effect of chloroplast reverse signaling on plant salt tolerance response Promotional role
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Horticulture, Anhui Agricultural University professor Wang Songhu for the text of the corresponding author, Zhong Keyuan Chengdu Institute of Biology, Dr.
Zhuang Yong graduated as the first author
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Zhong ASTRI ASTRI

Salt stress can cause ionic toxicity, osmotic stress and oxidative stress to plant cells
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The photosynthesis of chloroplasts is very sensitive to salt stress and produces a large amount of reactive oxygen species (ROS), which is the main source of ROS in plants

_{2 2}

Wang Songhu's research group isolated a new gene EGY3 induced by salt stress and chloroplast oxidative stress , which encodes a protein that locates the chloroplast
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The deletion mutant egy3-1 of this gene exhibits hypersensitivity to salt stress and MV-induced chloroplast oxidative stress, while overexpression plants of this gene significantly increase the plant's resistance to salt stress and chloroplast oxidative stress

EGY3 egy3-1 ^2•- _{2 2 2 2} EGY3 ^2•- _{2 2 2 2}

A schematic diagram of EGY3 regulating salt stress response by regulating chloroplast ROS homeostasis and counter-signaling
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A schematic diagram of EGY3 regulating salt stress response by regulating chloroplast ROS homeostasis and counter-signaling
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EGY3

Interestingly, the addition of low concentrations of H by exogenously 2 O 2 (or APX enzyme inhibitors) may be complementary egy3-1 salt stress hypersensitive phenotype, suggesting that egy3-1 salt stress due to hypersensitivity It is caused by insufficient H ₂ O ₂ produced by chloroplasts
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H ₂ O ₂ can be produced in organelles such as extracellular region, chloroplast, mitochondria and peroxisome.

2 2 egy3-1 egy3-1 _{2 2 2 2 2 2}

Related paper information: https://doi.

https://doi.
org/10.
1016/j.
celrep.
2021.
109384