Glabra 2 Regulates Ethylene Overproducer 1 Accumulation During Nutrient Deficiency-Induced Root Hair Growth

March 2024 in “ Plant physiology ”

Jianing Cheng, Jinshu Wang, Shuangtian Bi, M.-H. Li, Lina Wang, Lu Wang, Tong Li, Xiaolan Zhang, Yu Gao, Lei Zhu, Che Wang

GLABRA 2 ethylene root hair growth Arabidopsis nutrient deficiency ETHYLENE OVERPRODUCER 1 ETO1 nitrogen deficiency phosphorus deficiency potassium deficiency transcription factor gene regulation GL2 ET root hair nutrient stress

TLDR GLABRA 2 controls ethylene production to help root hair growth during nutrient deficiency.

The study investigates the role of the transcription factor GLABRA 2 (GL2) in regulating ethylene (ET) production during root hair growth in Arabidopsis under nutrient deficiency. GL2 inhibits ET production by binding to the promoter of the ET OVERPRODUCER 1 (ETO1) gene, which is crucial for ET regulation. This GL2-ETO1 module is essential for root hair growth under nitrogen, phosphorus, and potassium deficiencies. The research also identifies several genes involved in this regulatory mechanism, highlighting a key transcriptional control of ET production in response to nutrient stress.

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