category
bioRxiv
date
Feb 23, 2026
slug
status
Published
summary
创新性整合生理学与转录组学解析干旱响应机制,揭示耐旱与敏感基因型在中度/重度干旱下的分子差异:1)发现耐旱基因型早期ABA调控与脱水保护机制;2)识别敏感基因型的RNA/蛋白周转特征;3)构建阶段特异性共表达网络,明确耐旱相关模块的动态调控轨迹。
tags
测序技术
type
Post

📄 原文题目

Progressive drought transcriptomics and co-expression framework in eggplant (Solanum melongena L.)

🔗 原文链接

💡 AI 核心解读

创新性整合生理学与转录组学解析干旱响应机制,揭示耐旱与敏感基因型在中度/重度干旱下的分子差异:1)发现耐旱基因型早期ABA调控与脱水保护机制;2)识别敏感基因型的RNA/蛋白周转特征;3)构建阶段特异性共表达网络,明确耐旱相关模块的动态调控轨迹。

📝 英文原版摘要

Drought is a major constraint for eggplant productivity in Mediterranean and semi-arid environments, yet stage-specific molecular features that distinguish tolerant and sensitive genotypes under progressive water deficit remain limited. Here, we profiled drought responses in two contrasting eggplant (Solanum melongena L.) genotypes from the G2P-SOL core collection, integrating physiology and transcriptomics to resolve genotype-dependent programs at moderate and severe stress. Physiological measurements confirmed divergent drought performance, with the tolerant genotype Berenjena de rabo largo (GPE020510) maintaining water status and stomatal function longer than the sensitive genotype Qianzi (GPE008940). RNA-seq revealed strong transcriptional reprogramming in both genotypes, but with distinct timing and functional priorities across stress transitions. At moderate stress, tolerance was associated with early ABA-centred regulatory control and dehydration protection (including ABI5, TAS14 and LEA/dehydrin-related loci), coupled to transport and redox homeostasis and repression of growth-associated outputs. In contrast, the sensitive genotype showed prominent early regulatory and RNA/protein-turnover signatures alongside weaker representation of cuticle/barrier and chloroplast/light-management functions. Under severe stress, the sensitive genotype shifted toward a broad high-maintenance state enriched in remodeling, detoxification and transporter activity, whereas the tolerant genotype displayed a more targeted adjustment featuring plastid photoprotection, proteostasis and selective metabolic reconfiguration. Co-expression network analysis supported this stage-resolved model by identifying modules and hub genes with contrasting temporal trajectories between genotypes, link
ing earlier coordinated regulatory/membrane-trafficking and plastid/redox tuning to drought tolerance. Overall, these results indicate that eggplant drought resilience is associated with genotype-specific coordination and timing of protective programs superimposed on a shared basal stress response, and they provide prioritized candidate pathways and genes for functional validation and breeding.
植被增加海洋沉积物中的甲烷排放和甲烷氧化菌多样性雌二醇重编程小胶质细胞以创造免疫抑制微环境促进乳腺癌脑转移
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