时间标签：数据日期 2026-10-31 · 生成时间 2026-11-01 05:30（Asia/Shanghai）｜ 检索窗口 PubMed edat 2026/10/28–2026/10/31 ｜ 情报发生日期 2026-10-31
研究问题
However, climate change has led to an increased frequency and intensity of extreme heat events, posing a serious threat to wheat productivity (; ; ).；These interconnected challenges underscore the urgent need to develop heat-resilient wheat cultivars, with genetic improvement recognized as a sustainable and effective strategy.；Despite these insights, the stage-specificity of gene function remains a critical knowledge gap.
方法
Seven-day-old seedlings were transferred to quarter-strength Hoagland’s solution and exposed to 42 °C for 5 days, followed by a 5-day recovery at 22 °C.；Raw reads were processed using Trimmomatic v0.39 () with the following quality filtering criteria: reads were trimmed when the average quality score within a sliding window of 4 bp fell below Q20, and any read shorter than 50 bp after trimming was discarded.；A soft-thresholding power of β = 9 was selected based on scale-free topology criteria (R2 > 0.8).；To validate RNA-seq results, RT-qPCR was performed on 11 candidate genes exhibiting differential expression between ZNM1 and YM20.
核心结论
Under seedling-stage heat stress, ZNM1 exhibited a markedly higher survival rate (86.21%) compared with YM20 (27.53%) (), demonstrating a clear contrast in thermotolerance at the vegetative stage.；Grain morphological analysis further revealed pronounced deformation in YM20, with kernel length and width reduced by 8.08% (P = 0.001) and 4.16% (P = 0.03), respectively, compared with unstressed controls.；By contrast, ZNM1 maintained near-normal grain morphology, exhibiting only minor reductions of 2.13% in length (P = 0.26) and 3.42% in width (P = 0.24) (). ‖ 结论：Collectively, our findings demonstrate that sustained thermotolerance in wheat is mediated by developmentally persistent regulation of auxin signaling homeostasis, NAD(P)H dehydrogenase complex assembly, and antioxidant defense systems.
局限
This approach is particularly valuable for initial screening, as seedling-stage assays are faster, more reproducible, and less environmentally confounded than field-based reproductive-stage evaluations.；Its parental line ZM261 has been previously identified as a heat-tolerant germplasm in preliminary screening, while YM18 is a widely adapted cultivar with good agronomic performance.
对本项目的价值
★☆☆☆☆ 方法学进展决定我们能否在有限样本下检出真实效应，属基础设施级收益。
全文来源
PMC JATS 全文（正文 30,350 字符，已过标题/DOI 逐字归属校验）
原文题录
- 英文标题：Integrative transcriptomic and functional analyses identify TaARF in the auxin response pathway as a hub gene conferring multi-stage heat tolerance in wheat.
- 期刊与标识：Front Plant Sci · PMID 42948018 · DOI 10.3389/fpls.2026.1965437
B 级证据分级：B 级（同行评议临床前研究，主要为动物模型）
本文核心结论来自动物模型或体外细胞学，属临床前证据，不能外推至人体。「延长健康寿命」「改善功能」等表述在小鼠中的意义，与人类临床结局之间仍有距离。
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