Integrating proteomic and phosphoproteomic profiles provide new insights into ABA-dependent signal regulation network in maize response to heat stress.

ABSTRACT:

Background

Heat stress (HS) negatively impacts crop yield and quality worldwide. Abscisic acid (ABA) is well known to play critical roles in stress responses. However, the molecule details of ABA-dependent signaling pathways in plant response to HS are unclear.

Results

We proved that maize ABA-deficient mutant vp5 significantly attenuated thermotolerance, as compared to that of the wild type Vp5 under HS condition, supporting the notion that ABA plays pivotal roles in maize HS adaptation. Proteomics and phosphoproteomics in Vp5 and vp5 leaves exposed to HS found 167 DEPs (Differently Expressed Proteins) and 268 DEPPs (Differently Expressed Phosphoproteins) involved in ABA signaling under HS. Among them, heat shock proteins (17 DEPs and 3 DEPPs), transcription factors (9 DEPs

SUBMITTER: Liu Y 

PROVIDER: S-EPMC12210845 | biostudies-literature | 2025 Jul

REPOSITORIES: biostudies-literature