藜麦灌浆期黄酮类化合物对洪水胁迫的响应机制

IF 4.1 2区 生物学 Q1 PLANT SCIENCES
Frontiers in Plant Science Pub Date : 2025-05-21 eCollection Date: 2025-01-01 DOI:10.3389/fpls.2025.1565697
Guofei Jiang, Xuqin Wang, Qingwen Jiang, Yutao Bai, Lingyuan Zhang, Ping Zhang, Junna Liu, Li Li, Hanxue Li, Liubin Huang, Shan Zhang, Peng Qin
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引用次数: 0

摘要

藜麦是一种营养价值很高的新型作物。灌浆期洪水胁迫是制约藜麦生长发育的重要因素,黄酮类化合物在植物非生物胁迫中具有重要作用;然而,黄酮类化合物对灌浆期藜麦淹水胁迫的响应机制尚不清楚。因此,本研究以滇藜麦1844为材料,采用转录组学、代谢组学和生物信息学等技术对灌浆期淹水胁迫下的藜麦叶片进行了研究。结果表明,代谢组中检测到433种类黄酮代谢物。GO和KEGG转录组中与类黄酮相关的基因均显著富集。综合转录组学和代谢组学分析显示,在应激处理下,18个类黄酮代谢物和30个基因发生了显著变化。这30个基因通过调节F3H、CHI和CHS等酶的活性来调节类黄酮的积累,从而增强藜麦对洪涝胁迫的抵抗力。网络互作分析鉴定出5个核心转录因子、2个核心结构基因和4个关键代谢产物。这些成分协同调节类黄酮生物合成,减轻洪水引起的氧化损伤。本研究阐明了黄酮类化合物在藜麦抗涝胁迫中的作用和机制,为藜麦耐涝品种的选育提供理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mechanisms of flavonoids in quinoa's response to flooding stress in grain filling stage.

Quinoa is a new crop with high nutritional value. Flooding stress plays an important role in constraining the growth and development of quinoa during the filling stage, and flavonoids have been shown to have important roles in abiotic plant stress; however, the mechanisms by which flavonoids respond to quinoa flooding stress during the filling stage are not clear. Therefore, we used Dian quinoa-1844 as the material and employed transcriptomics, metabolomics and bioinformatics techniques to study quinoa leaves under flooding stress during the filling stage. The results showed that 433 flavonoid metabolites were detected in the metabolome. Genes related to flavonoids in the transcriptome were significantly enriched in both GO and KEGG. Integrated transcriptomic and metabolomic analyses revealed 18 flavonoid metabolites and 30 genes exhibiting significant alterations under stress treatment. These 30 genes regulate flavonoid accumulation by modulating the activity of enzymes such as F3H, CHI, and CHS, thereby enhancing quinoa's resistance to flooding stress. Network interaction analysis identified 5 core transcription factors, 2 core structural genes, and 4 key metabolites. These components synergistically regulate flavonoid biosynthesis to alleviate oxidative damage caused by flooding. This study elucidated the roles and mechanisms of flavonoids in quinoa's response to flooding stress, providing a theoretical basis for selecting and breeding quinoa varieties with high flooding tolerance.

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来源期刊
Frontiers in Plant Science
Frontiers in Plant Science PLANT SCIENCES-
CiteScore
7.30
自引率
14.30%
发文量
4844
审稿时长
14 weeks
期刊介绍: In an ever changing world, plant science is of the utmost importance for securing the future well-being of humankind. Plants provide oxygen, food, feed, fibers, and building materials. In addition, they are a diverse source of industrial and pharmaceutical chemicals. Plants are centrally important to the health of ecosystems, and their understanding is critical for learning how to manage and maintain a sustainable biosphere. Plant science is extremely interdisciplinary, reaching from agricultural science to paleobotany, and molecular physiology to ecology. It uses the latest developments in computer science, optics, molecular biology and genomics to address challenges in model systems, agricultural crops, and ecosystems. Plant science research inquires into the form, function, development, diversity, reproduction, evolution and uses of both higher and lower plants and their interactions with other organisms throughout the biosphere. Frontiers in Plant Science welcomes outstanding contributions in any field of plant science from basic to applied research, from organismal to molecular studies, from single plant analysis to studies of populations and whole ecosystems, and from molecular to biophysical to computational approaches. Frontiers in Plant Science publishes articles on the most outstanding discoveries across a wide research spectrum of Plant Science. The mission of Frontiers in Plant Science is to bring all relevant Plant Science areas together on a single platform.
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