Trihelix transcription factors GTL1 and DF1 prevent aberrant root hair formation in an excess nutrient condition.

ABSTRACT: Root hair growth is tuned in response to the environment surrounding plants. While most previous studies focused on the enhancement of root hair growth during nutrient starvation, few studies investigated the root hair response in the presence of excess nutrients. We report that the post-embryonic growth of wild-type Arabidopsis plants is strongly suppressed with increasing nutrient availability, particularly in the case of root hair growth. We further used gene expression profiling to analyze how excess nutrient availability affects root hair growth, and found that RHD6 subfamily genes, which are positive regulators of root hair growth, are downregulated in this condition. However, defects in GTL1 and DF1, which are negative regulators of root hair growth, cause frail and swollen root hai

SUBMITTER: Shibata M 

PROVIDER: S-EPMC9544051 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature