Assessing salt resilience in mustard: Growth, yield, tolerance indicators, and metabolite profiling to decipher the mechanism of salt tolerance in selected cultivars

IF 4.5 2区生物学 Q2 ENVIRONMENTAL SCIENCES

Environmental and Experimental Botany Pub Date : 2024-11-17 DOI:10.1016/j.envexpbot.2024.106033

Varisha Khan , Noushina Iqbal , Shahid Umar , Sayeed Ahmad

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引用次数: 0

Abstract

Salt stress is a major constraint on agricultural productivity, particularly affecting crop growth and yield. This study aims to evaluate salt resilience in mustard (Brassica juncea) by investigating variations in growth, yield, and physiological tolerance indicators among selected cultivars. Advanced analytical techniques, including Near-Infrared Spectroscopy (NIRS) and Gas Chromatography-Mass Spectrometry (GC-MS) profiling, were employed to decipher the mechanisms underlying salt tolerance. NIRS was utilized for its rapid, non-destructive analysis of biochemical variations among the cultivars, while GC-MS profiling provided a detailed understanding of the metabolomic changes induced by salt stress. This integrated approach enabled the identification of crucial metabolites and biomarkers associated with salt tolerance and yield enhancement. The results indicated significant cultivar-specific differences in metabolic profiles which correlated with growth and yield (pod number, pod length,pod biomass, seed number and seed weight) under salt stress. The most resilient cultivar demonstrated increased accumulation of osmoprotectants, antioxidants, and other stress-related metabolites. These findings underscore the importance of specific traits and metabolites in conferring salt tolerance.

This comprehensive study offers valuable insights for breeding programs aimed at developing salt-tolerant mustard cultivars, thereby contributing to sustainable agriculture in saline environments.

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评估芥菜的耐盐性：通过生长、产量、耐受性指标和代谢物分析来破译选定栽培品种的耐盐机制

盐胁迫是农业生产力的主要制约因素，尤其影响作物的生长和产量。本研究旨在通过调查选定栽培品种的生长、产量和生理耐受性指标的变化，评估芥菜（Brassica juncea）的抗盐能力。研究采用了先进的分析技术，包括近红外光谱法（NIRS）和气相色谱-质谱分析法（GC-MS），以破译耐盐性的内在机制。近红外光谱法可快速、无损地分析不同栽培品种之间的生化变化，而气相色谱-质谱分析法可详细了解盐胁迫引起的代谢组变化。这种综合方法有助于鉴定与耐盐性和增产相关的关键代谢物和生物标志物。结果表明，在盐胁迫下，与生长和产量（豆荚数量、豆荚长度、豆荚生物量、种子数量和种子重量）相关的代谢谱存在明显的栽培品种特异性差异。抗逆性最强的栽培品种表现出渗透保护剂、抗氧化剂和其他与胁迫相关的代谢物积累增加。这项综合研究为旨在开发耐盐芥菜栽培品种的育种计划提供了宝贵的见解，从而为盐碱环境下的可持续农业做出了贡献。

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

Environmental and Experimental Botany 环境科学-环境科学

CiteScore

9.30

自引率

5.30%

发文量

342

审稿时长

26 days

期刊介绍： Environmental and Experimental Botany (EEB) publishes research papers on the physical, chemical, biological, molecular mechanisms and processes involved in the responses of plants to their environment. In addition to research papers, the journal includes review articles. Submission is in agreement with the Editors-in-Chief. The Journal also publishes special issues which are built by invited guest editors and are related to the main themes of EEB. The areas covered by the Journal include: (1) Responses of plants to heavy metals and pollutants (2) Plant/water interactions (salinity, drought, flooding) (3) Responses of plants to radiations ranging from UV-B to infrared (4) Plant/atmosphere relations (ozone, CO2 , temperature) (5) Global change impacts on plant ecophysiology (6) Biotic interactions involving environmental factors.