Aged sweet corn (Zea mays L. saccharata Sturt) seeds trigger hormone and defense signaling during germination

IF 1.1 4区农林科学 Q3 AGRONOMY

Journal of Seed Science Pub Date : 2023-07-17 DOI:10.1590/2317-1545v45267344

Liangxia Zhao, Qiuyang Jiang, Jingyi Zhu, Tangdan Ju, Heng Jin, Canhong Gao

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引用次数: 0

Abstract

Abstract: Seed ageing during storage or shipping can affect the yield and cost of agricultural production. Sweet corn is a naturally mutated corn cultivar with weak seed vitality during storage. In this study, we have shown that endogenous hormone level dynamics of fresh and aged sweet corn seeds were different during early geminating process. Transcriptomic assembling uncovered several novel transcripts during early stage of sweet corn germination in signal transduction and RNA processing pathways. Comparative transcriptomic profiling revealed that expression of many genes was activated earlier in aged seeds than fresh ones. Functional analyses showed that, as two major networks, plant hormone signaling and defense pathways were different between fresh and aged sweet corn seeds. Auxin, cytokinin, gibberellin, salicylic acid and jasmonic acid signaling pathways were activated earlier in aged seeds than fresh ones on the first day after imbibition. These results provided knowledge for understanding the ageing process of sweet corn seeds and several candidate genes for genetic study of seed ageing mechanism.

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陈年甜玉米(Zea mays L. saccharata Sturt)种子在萌发过程中触发激素和防御信号

摘要种子在贮藏或运输过程中的老化会影响农业生产的产量和成本。甜玉米是一种自然突变的玉米品种，贮藏期间种子活力较弱。在本研究中，我们发现新鲜和陈年甜玉米种子在萌发早期的内源激素水平变化是不同的。转录组学组装揭示了甜玉米萌发早期信号转导和RNA加工途径中一些新的转录本。比较转录组学分析显示，许多基因的表达在老化种子中比新鲜种子更早被激活。功能分析表明，鲜甜玉米种子和陈化甜玉米种子作为两大网络，其激素信号通路和防御通路存在差异。生长素、细胞分裂素、赤霉素、水杨酸和茉莉酸信号通路在吸胀后第一天在老化种子中比新鲜种子更早被激活。这些结果为了解甜玉米种子的老化过程和种子老化机制的遗传研究提供了一些候选基因。

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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来源期刊

Journal of Seed Science Agricultural and Biological Sciences-Agronomy and Crop Science

CiteScore

2.00

自引率

30.00%

发文量

审稿时长

12 weeks

期刊介绍： From 2017 the Journal of Seed Science (JSS) will circulate online version only. Original scientific studies and communications, not yet published or submitted to another journal for publication and written in Portuguese or English, will be accepted for publication. For manuscripts submitted in English, the authors should provide an adequated version. The SCIENTIFIC COMMUNICATION is a category of scientific manuscript which describes a technique, an equipment, new species or observations and surveys of limited results. It has the same scientific rigor as the “Scientific Articles” and the same value as a publication. The classification of a manuscript as a SCIENTIFIC COMMUNICATION is based on its content and scientific merit but it can be a preliminary study, simple and not definitive on a certain subject, with publication justified by its uniqueness and contribution to the area. The Editorial Board of the JSS may invite leading authors of recognized reputation to compose specific Review Articles covering topics of their specialization that will convey to the scientific community the state-of-the-art knowledge related to the specific theme.