荧光假单胞菌 FY32 在聚乙二醇诱导的干旱胁迫下对油菜(Brassica Napus L.)栽培品种的影响

IF 2.4 3区 农林科学 Q1 AGRONOMY Gesunde Pflanzen Pub Date : 2023-12-06 DOI:10.1007/s10343-023-00958-6
Bita Kazemi Oskuei, Ali Bandehagh, Davoud Farajzadeh, Behnam Asgari Lajayer, Weixi Shu, Tess Astatkie
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引用次数: 0

摘要

干旱等环境胁迫是农业生产力的最大限制因素。干旱胁迫对油菜植物的生长有很大影响。本研究探讨了在聚乙二醇(PEG)诱导的干旱胁迫下,接种荧光假单胞菌 FY32 对油菜栽培品种的生长和抗氧化状态的影响。结果表明,在中度干旱胁迫下,细菌接种可提高油菜植株的气干重和根长。作为抗氧化酶的过氧化物酶活性在干旱胁迫下有所增加,而过氧化氢酶活性保持不变,多酚氧化酶活性则有所下降。与未接种植物相比,接种植物在干旱胁迫下的抗氧化酶活性明显更高。接种的油菜栽培品种 Hyola308 对干旱胁迫表现出更好的保护机制,比其他栽培品种更能承受干旱胁迫,这可能是由于其生长参数和抗氧化酶活性提高所致。这些结果表明,接种荧光假单胞菌 FY32 菌株可减轻干旱胁迫的不利影响,减轻植物的胁迫压力。
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Effects of Pseudomonas Fluorescens FY32 On Canola (Brassica Napus L.) Cultivars Under Drought Stress Induced by Polyethylene Glycol

Environmental stresses, such as drought, represent the most limiting factors for agricultural productivity. Drought stress has drastic effects on the growth of canola plants. This study investigates the effects of inoculation with Pseudomonas fluorescens FY32 on the growth and antioxidant status of canola cultivars under drought stress induced by polyethylene glycol (PEG). The results show that bacterial inoculation improves the aerial dry weights and root length of canola plants under moderate drought stress. Peroxidase activity, as an antioxidant enzyme, increased in response to drought stress, whereas catalase activity remained constant, and polyphenol oxidase activity decreased. Compared to non-inoculated plants, inoculated plants showed significantly higher activities of antioxidant enzymes under drought stress. The inoculated canola cultivar Hyola308 exhibited a better protection mechanism against drought stress and was more tolerant than other cultivars exposed to drought stress, possibly due to its increased growth parameters and antioxidant enzyme activities. These results suggest that inoculation with the Pseudomonas fluorescens FY32 strain might alleviate the adverse effects of drought stress and lead to less stress pressure on plants.

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来源期刊
Gesunde Pflanzen
Gesunde Pflanzen 农林科学-农艺学
CiteScore
3.50
自引率
25.80%
发文量
152
审稿时长
>12 weeks
期刊介绍: Gesunde Pflanzen publiziert praxisbezogene Beiträge zum Pflanzenschutz in Landwirtschaft, Forstwirtschaft, Gartenbau und öffentlichem Grün und seinen Bezügen zum Umwelt- und Verbraucherschutz sowie zu Rechtsfragen. Das Themenspektrum reicht von der Bestimmung der Schadorganismen über Maßnahmen und Verfahren zur Minderung des Befallsrisikos bis hin zur Entwicklung und Anwendung nicht-chemischer und chemischer Bekämpfungsstrategien und -verfahren, aber auch zu Fragen der Auswirkungen des Pflanzenschutzes auf die Umwelt, die Sicherung der Ernährung sowie zu allgemeinen Fragen wie Nutzen und Risiken und zur Entwicklung neuer Technologien. Jedes Heft enthält Originalbeiträge renommierter Wissenschaftler, aktuelle Informationen von Verbänden sowie aus der Industrie, Pressemitteilungen und Personalia. Damit bietet die Zeitschrift vor allem Behörden und Anwendern im Agrarsektor und Verbraucherschutz fundierte Praxisunterstützung auf wissenschaftlichem Niveau.
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