Molecular mechanism of Arabidopsis transcription factor HAT1 negatively regulating salt stress
Soil salinity is one of the major environmental challenges facing global agriculture today,and it is of great importance to conduct research on salt stress response mechanisms in order to make plants grow better.The plant-specific homologous structural domain-leucine zipper(HD-ZIP)family transcription factor HAT1 regulates multiple stress responses in Arabidopsis,and so far,it is not clear whether HAT1 is involved in regulating plant responses to salt stress.This paper focuses on the regu-latory role of HAT1 in response to salt stress in Arabidopsis,with the aim of expanding the molecular regulatory network of salt stress.This study demonstrates that the EIN3-HAT1-CSDs molecular module regulates the plant response to salt stress.Salt stress induces the accumulation of EIN3,which inhib-ites the expression of HAT1,thereby weakening the transcriptional inhibition of HAT1 on downstream genes CSD1 and CSD2 and activating the antioxidant system to remove excess reactive oxygen species to enhance the salt tolerance of plants.This signaling pathway provides a new potential target for im-proving plant salt tolerance through molecular breeding.
NETL
NSTL
万方数据
