Unveiling the role of BrREM1.4: a key regulator in plant growth and abiotic stress adaptation in turnip (Brassica rapa).

IF 2.9 4区生物学 Q2 PLANT SCIENCES

Functional Plant Biology Pub Date : 2026-08-21 DOI:10.1071/FP25182

Hongyuan Lan, Hongyu Gao, Chu Shi, Xin Li, Xiaoqian Hu, Bo Zhou, Haifang Yan

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引用次数: 0

Abstract

Remorins (REMs) are plant-specific proteins known for their diverse biological functions. However, their roles in plant growth, development, and responses to abiotic stress remain largely unexplored. In this study, we investigated the function of BrREM1.4 (PQ810929), a protein isolated from the turnip (Brassica rapa) cv. Tsuda in growth, development, and resistance to saline-alkaline stress. Quantitative PCR analysis revealed that BrREM1.4 showed tissue-specific expression, with the highest levels detected in the petals. The transcription levels of BrREM1.4 in turnip seedlings (1-7 days old) were significantly higher under natural light conditions compared with dark conditions. Furthermore, the expression of BrREM1.4 was upregulated in response to extreme temperatures, saline-alkaline stress, and drought stress. Heterologous overexpression of BrREM1.4 in tobacco (Nicotiana tabacum) resulted in increased plant height, leaf number, root length, branching, and 100-grain weight although it significantly reduced the seed setting rate. Compared with wild-type tobacco, plants overexpressing BrREM1.4 exhibited enhanced tolerance to salt (NaCl) and alkali (NaHCO3) stresses. These findings suggest that BrREM1.4 plays a crucial role in plant growth and development, as well as in the adaptation to various abiotic stresses.

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揭示BrREM1.4在芜菁植物生长和非生物胁迫适应中的关键调控作用。

懊悔蛋白（REMs）是一种植物特异性蛋白质，具有多种生物功能。然而，它们在植物生长、发育和对非生物胁迫的反应中的作用在很大程度上仍未被探索。在这项研究中，我们研究了从芜菁（Brassica rapa） cv中分离的蛋白BrREM1.4 （PQ810929）的功能。田菁的生长发育和对盐碱胁迫的抗性。定量PCR分析显示，BrREM1.4具有组织特异性表达，在花瓣中表达量最高。自然光照条件下芜菁幼苗（1 ~ 7 d） BrREM1.4转录水平显著高于暗光照条件。此外，BrREM1.4在极端温度、盐碱胁迫和干旱胁迫下表达上调。BrREM1.4在烟草（Nicotiana tabacum）中异源过表达可显著降低结实率，但显著提高株高、叶片数、根长、分枝和百粒重。与野生型烟草相比，过表达BrREM1.4的烟草对盐（NaCl）和碱（NaHCO3）胁迫的耐受性增强。这些研究结果表明，BrREM1.4在植物生长发育以及对各种非生物胁迫的适应中起着至关重要的作用。

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

Functional Plant Biology 生物-植物科学

CiteScore

5.50

自引率

3.30%

发文量

156

审稿时长

1 months

期刊介绍： Functional Plant Biology (formerly known as Australian Journal of Plant Physiology) publishes papers of a broad interest that advance our knowledge on mechanisms by which plants operate and interact with environment. Of specific interest are mechanisms and signal transduction pathways by which plants adapt to extreme environmental conditions such as high and low temperatures, drought, flooding, salinity, pathogens, and other major abiotic and biotic stress factors. FPB also encourages papers on emerging concepts and new tools in plant biology, and studies on the following functional areas encompassing work from the molecular through whole plant to community scale. FPB does not publish merely phenomenological observations or findings of merely applied significance. Functional Plant Biology is published with the endorsement of the Commonwealth Scientific and Industrial Research Organisation (CSIRO) and the Australian Academy of Science. Functional Plant Biology is published in affiliation with the Federation of European Societies of Plant Biology and in Australia, is associated with the Australian Society of Plant Scientists and the New Zealand Society of Plant Biologists.