不同环境下亲本或母本类基因表达的灵活性有助于节水抗旱杂交水稻避旱和耐旱的结合

IF 4.4 1区 农林科学 Q1 AGRONOMY Theoretical and Applied Genetics Pub Date : 2024-09-13 DOI:10.1007/s00122-024-04735-5
Lei Wang, Xiaosong Ma, Yi Liu, Guolan Liu, Haibin Wei, Zhi Luo, Hongyan Liu, Ming Yan, Anning Zhang, Xinqiao Yu, Hui Xia, Lijun Luo
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引用次数: 0

摘要

背景水稻是世界上最重要的农作物之一。水稻是世界上最重要的农作物之一,水稻生产耗水量大,缺水和干旱胁迫严重。主要发现与亲本汉恢3号(HH3)和汉恢7A(HH7A)相比,杂交WDR品种汉优73(HY73)表现出更优越的抗旱性。对抗旱性相关性状的研究表明,HY73 在耐旱性和抗旱性方面的表现分别与 HH3 和 HH7A 相似。对不同植物激素处理和非生物胁迫下的样本进行了转录组分析,其中叶片样本中 HY73 与 HH3 比较接近,而根部样本中则与 HH7A 比较接近。HY73 与其亲本在 DEGs 上有很大差异,对 DEGs 的 GO 分析表明 HH3 和 HH7A 的干旱响应途径不同。类父本表达分析表明,HY73 的类父本表达模式较高。此外,亲本样表达模式在非生物胁迫/植物激素处理样本和对照样本之间发生了显著的转化,这可能有助于 HY73 适应不同的环境。对这些类父本表达基因进行的 WGCNA 分析发现了一些抗旱基因,这些基因应该是 HY73 抗旱性更强的原因。结论:我们的研究揭示了亲本有益性状互补和基因灵活表达在 HY73 抗旱性中的重要作用,这将促进 WDR 新品种的开发。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Flexibility of parental-like or maternal-like gene expression under diverse environments contributes to combined drought avoidance and drought tolerance in a water-saving and drought-resistance rice hybrid

Key Message

The hybrid rice variety (Hanyou73) exhibits the maternal-like (HH7A) gene expression in roots and parental-like (HH3) gene expression in leaves to obtain both advantages of drought avoidance and drought tolerance from its two parents.

Background

Rice is one of the most important crops in the world. Rice production consumes lots of water and significantly suffers from the water deficiency and drought stress. The water-saving and drought-resistance rice (WDR) confers good drought resistance and performs well in the water-saving cultivation.

Main findings

A hybrid WDR variety Hanyou73 (HY73) exhibited superior drought resistance compared with its parents Hanhui3 (HH3) and Huhan7A (HH7A). Studies on drought resistance related traits revealed that HY73 performed like HH3 and HH7A on drought tolerance and drought avoidance, respectively. Transcriptomes were analyzed for samples with various phytohormone treatments and abiotic stresses, in which HY73 was closer to HH3 in leaf samples while HH7A in root samples. HY73 and its parents differed largely in DEGs and GO analysis for DEGs suggested the different pathways of drought response in HH3 and HH7A. Parent-like expression analysis revealed that the higher-parent-like expression pattern was prevailing in HY73. In addition, patterns of the parent-like expression significantly transformed between abiotic-stressed/phytohormone-treated and control samples, which might help HY73 to adapt to different environments. WGCNA analysis for those parent-like expression genes revealed some drought resistant genes that should contribute to the superior drought resistance of HY73. Genetic variation on the promotor sequence was confirmed as the reason for the flexible parent-like gene expression in HY73.

Conclusion

Our study uncovered the important roles of complementation of beneficial traits from parents and flexible gene expressions in drought resistance of HY73, which could facilitate the development of new WDR varieties.

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来源期刊
CiteScore
9.60
自引率
7.40%
发文量
241
审稿时长
2.3 months
期刊介绍: Theoretical and Applied Genetics publishes original research and review articles in all key areas of modern plant genetics, plant genomics and plant biotechnology. All work needs to have a clear genetic component and significant impact on plant breeding. Theoretical considerations are only accepted in combination with new experimental data and/or if they indicate a relevant application in plant genetics or breeding. Emphasizing the practical, the journal focuses on research into leading crop plants and articles presenting innovative approaches.
期刊最新文献
Leveraging genomic prediction to surpass current yield gains in spring barley. Fine mapping of QGPC.caas-7AL for grain protein content in bread wheat. Genetic loci associated with sorghum drought tolerance in multiple environments and their sensitivity to environmental covariables. Correction to: Identification and development of functional markers for purple grain genes in durum wheat (Triticum durum Desf.). Correction to: Identification and map‑based cloning of an EMS‑induced mutation in wheat gene TaSP1 related to spike architecture.
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