利用多组学方法揭示桑果实脱落机制。

IF 4.1 2区 生物学 Q1 PLANT SCIENCES
Frontiers in Plant Science Pub Date : 2025-09-22 eCollection Date: 2025-01-01 DOI:10.3389/fpls.2025.1605312
Jiahu Yang, Sha Li, Zhennan Li, Yahui Xuan, Jiamei He, Mingju Ruan, Yuming Feng, Zhenyang Tao, Xiaoru Kang, Zhengang Li
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引用次数: 0

摘要

简介:桑葚(Morus laevigata,长果桑树)含有丰富的活性成分,具有显著的营养价值。小果期是果实脱落的关键时期,阐明这一过程的生物学机制可以为培育更稳定、抗脱落的品种提供理论基础。方法:选取坐果期(4 ~ 5月)的果梗作为实验材料,包括脱落果实和未脱落果实。对花梗脱落带进行形态学分析,以检验其结构差异。此外,还进行了转录组学和代谢组学分析,以研究果实脱落相关的基因表达和代谢物变化。结果:对脱落果实的花序梗脱落区进行形态学分析,发现细胞间隙增大,细胞排列紊乱。转录组学和代谢组学分析表明,果实脱落相关基因和代谢物主要参与植物激素信号转导、淀粉和蔗糖代谢途径。生长素和脱落酸是关键的调控因子,调控细胞壁降解酶的表达,促进细胞壁松动和降解,最终导致果实脱落。此外,能量代谢的改变在这一过程中起着关键作用。结论:这些发现有助于深入了解桑树果实发育和脱落的生理机制,为桑树育种和现代农业的可持续发展提供有价值的见解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Unraveling the mechanisms of fruit abscission in Morus laevigata through multi-omics approaches.

Introduction: Morus laevigata (long-fruited mulberry) is rich in active components and possesses significant nutritive value. The fruitlet stage represents a critical period for fruit abscission, and elucidating the underlying biological mechanisms of this process can provide a theoretical foundation for breeding more stable and abscission resistant cultivars.

Methods: Fruit peduncles at the fruit set stage (April to May) were selected as experimental materials, including both abscising and non-abscising fruits. Morphological analysis of the peduncle abscission zone was conducted to examine structural differences. Additionally, transcriptomic and metabolomic analyses were performed to investigate gene expression and metabolite changes associated with fruit abscission.

Results: Morphological analysis of the peduncle abscission zone in abscising fruits revealed enlarged intercellular spaces and disorganized cell arrangements. Transcriptomic and metabolomic analyses indicated that genes and metabolites related to fruit abscission were primarily involved in plant hormone signal transduction, and starch and sucrose metabolism pathways. Auxin and abscisic acid were identified as key regulators, modulating the expression of cell wall-degrading enzymes, which facilitated cell wall loosening and degradation, ultimately leading to fruit abscission. Furthermore, alterations in energy metabolism were found to play a pivotal role in this process.

Conclusion: These findings contribute to a deeper understanding of the physiological mechanisms underlying fruit development and abscission, offering valuable insights into mulberry breeding and the sustainable advancement of modern agriculture.

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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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