ArticleBMC plant biology2025
Integrating proteomic and phosphoproteomic profiles provide new insights into ABA-dependent signal regulation network in maize response to heat stress.
Article in BMC plant biology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Beyond Protein Abundance: Proteoform Diversity and Phosphoproteome Remodeling in Maize (Proteomes · 2026Review
- Review
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7 authors.
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Abstract
backgroundHeat 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.
resultsWe 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 and 27 DEPPs), ubiquitin-proteasome system components (1 DEP and 6 DEPPs), translation-related to proteins (23 DEPs and 22 DEPPs) and defensive proteins (12 DEP and 24 DEPPs) were identified, indicating that chaperon protein function, protein turnover, and defense system might be the key ABA-mediated processes in maize HS response. Specially, we focused on a bZIP transcription factor ZmHY5L (ZmHY5-Like) because its expression and phosphorylation levels were both upregulated prominently under HS, and further demonstrated that the complementary lines of the mimic-phosphorylatable ZmHY5L-S25D in Arabidopsis hy5 knockdown mutants rescued heat-sensitive phenotypes of hy5 mutant while complementary lines of the mimic-nonphosphorylatable ZmHY5L-S25A failed, suggesting the ZmHY5L activation by phosphorylation could play a key role in ABA-regulated thermotolerance.
conclusionThe DEPs and DEPPs involved in ABA signaling during maize heat response were identified in this study, and showed that ZmHY5L might play important role in ABA-regulated thermotolerance. Our data provides useful information for studying the underlying molecular mechanisms of maize response to HS and facilitates the elucidation of a portion of complex ABA-regulated heat response network.
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