利用水解结冷胶--一种环境友好型植物生物刺激剂--提高三色堇的生长和耐盐碱胁迫能力

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-06-01 DOI:10.12911/22998993/187381

P. Salachna, R. Piechocki, C. Podsiadło, Kamila Bojko

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引用次数: 0

摘要

生物刺激剂是由多种化合物组成的一个大类，可刺激植物生长并增强植物对环境压力的抵抗力。三色堇的需求量很大，因此人们一直在寻求新的可持续生产策略。本研究评估了部分水解结冷胶（HGG）作为天然生物刺激剂对生产优质三色堇植物的有效性。在实验 1 中，研究了 HGG 的淋洗浓度（0、25、50 和 100 mg-dm -3 ）对两个三色堇栽培品种的形态和生理参数的影响。在实验 2 中，研究目的是确定 HGG 对在氯化钠（NaCl）浓度（50 和 200 毫摩尔）增加条件下生长的三色堇的生长、开花和叶片生理的影响。结果表明，HGG 对两种栽培品种都有促进生长的作用，其中 100 mg-dm -3 的 HGG 浓度最为有效。NaCl盐度的增加对植物的生长、开花、外观、叶绿素相对含量（SPAD）、气孔导度和叶绿素荧光（Fv/Fm）都有负面影响。然而，在 200 mM NaCl 盐胁迫条件下，HGG 预处理主要通过减少盐胁迫植物的 SPAD、Fv/Fm、花朵数量和生物量的减少来缓解盐胁迫的不利影响。总体结果表明，适当剂量的环保型 HGG 可用于提高三色堇植物的生长、开花和抗盐胁迫能力。

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Enhancing Growth and Salinity Stress Tolerance of Pansy Using Hydrolyzed Gellan Gum – An Environmentally Friendly Plant Biostimulant

Biostimulants are a broad group of numerous compounds that stimulate plant growth and increase plant resistance to environmental stresses. Pansies are in great demand, so new sustainability strategies for their production are still being sought. This study evaluated the effectiveness of partially hydrolyzed gellan gum (HGG) as a natural biostimulant for the production of high-quality pansy plants. In Experiment 1, the effects of drench concentrations of HGG (0, 25, 50, and 100 mg·dm –3 ) on morphological and physiological parameters of two pansy cultivars were investigated. In Experiment 2, the objective of study was to determine the effect of HGG on growth, flowering and leaf physiology of pansy grown under increasing sodium chloride (NaCl) concentrations (50 and 200 mM). Our results showed in both cultivars growth-promoting effects of HGG, and 100 mg·dm –3 of HGG was the most effective concentration. The increasing salinity imposed as NaCl negatively affected the growth, flowering, visual appearance, relative chlorophyll content (SPAD), stomatal conductance, and chlorophyll fluorescence (Fv/Fm) of plants. However, HGG pretreatment alleviated the adverse effects of salt stress mainly by reducing the decrease of SPAD, Fv/Fm, flower number and biomass in salt-stressed plants at 200 mM NaCl. Overall results indicated that eco-friendly HGG at the proper dose could be used as a tool to enhance growth, flowering and salt stress tolerance in pansy plants.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.