Characterisation of the Endophytic and Rhizospheric Bacillus licheniformis Strains Isolated from Sweet Potato with Plant Growth-Promoting and Yield Enhancing Potential

IF 17.7 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY Accounts of Chemical Research Pub Date : 2024-04-04 DOI:10.1155/2024/4073275

Ádám Bordé-Pavlicz, A. Zhumakayev, Henrietta Allaga, M. Vörös, P. W. Ramteke, Tamás Monostori, Csaba Vágvölgyi

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Abstract

The primary aim of the present study was to identify bacterial isolates with yield-enhancing potential for application as biofertilisers in the cultivation of sweet potato. Therefore, endophytic and rhizospheric strains were isolated from sweet potato plantations in Hungary to identify bacterial strains with plant growth-promoting and antifungal potential. In total, seven Bacillus licheniformis strains were identified and subjected to detailed ecophysiological investigations. Experiments have been conducted to investigate the tolerance of selected strains to different limiting factors such as pH, temperature, and water activity, which affect survivability in various agricultural environments. The majority of tested B. licheniformis strains exhibited plant growth-promoting potential (e.g., production of indole-3-acetic acid up to 40.42 μg mL−1, production of ammonia up to 0.87 mg mL−1, phosphorus solubilising activity, siderophore production), with two strains (SZMC 27713 and SZMC 27715) demonstrating inhibitory activity (ranging between 7% and 38%) against plant pathogenic fungi prevalent in sweet potato cultivation. Furthermore, strain SZMC 27715 induced accelerated germination and a significantly higher germination rate in tomato seeds compared to the control. In a field study, it was observed that strain SZMC 27715 had a potent yield enhancing effect in sweet potato, where a significant yield per plant increase was observed in all treatments (1.13, 1.09 and 1.40 kg) compared to the control plants (0.92 kg). The highest yield per plant was observed when the cuttings were soaked combined with two additional foliar treatments. To the best of our knowledge, this is the first report of the successful utilisation of the B. licheniformis strain as a biofertiliser for yield enhancement in sweet potato cultivation. Based on our results, strain SZMC 27715 has potential for application as a biofertiliser in sweet potato cultivation either as a standalone option or in a microbial consortium.

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从具有促进植物生长和提高产量潜力的甘薯中分离出的地衣芽孢杆菌内生菌株和根瘤菌株的特性分析

本研究的主要目的是鉴定具有增产潜力的细菌分离物，以便在甘薯种植中用作生物肥料。因此，从匈牙利的甘薯种植园中分离出了内生菌株和根瘤菌株，以鉴定具有促进植物生长和抗真菌潜力的细菌菌株。总共鉴定出七株地衣芽孢杆菌，并对其进行了详细的生态生理学研究。实验研究了所选菌株对不同限制因素（如 pH 值、温度和水活性）的耐受性，这些因素会影响其在各种农业环境中的存活能力。大多数受测地衣芽孢杆菌菌株具有促进植物生长的潜力（例如，吲哚-3-乙酸产量高达 40.42 μg mL-1，氨产量高达 0.87 mg mL-1，磷溶解活性，苷元产量），其中两个菌株（SZMC 27713 和 SZMC 27715）对甘薯种植中普遍存在的植物病原真菌具有抑制活性（介于 7% 和 38% 之间）。此外，与对照组相比，菌株 SZMC 27715 能诱导番茄种子加速发芽并显著提高发芽率。在一项田间研究中，观察到菌株 SZMC 27715 对甘薯有很强的增产效果，与对照植株（0.92 千克）相比，在所有处理（1.13、1.09 和 1.40 千克）中都观察到了显著的单株增产。当插条浸泡后再进行两次叶面处理时，每株产量最高。据我们所知，这是第一份成功利用地衣芽孢杆菌菌株作为生物肥料提高甘薯产量的报告。根据我们的研究结果，地衣芽孢杆菌 SZMC 27715 菌株具有在甘薯种植中作为生物肥料单独使用或在微生物联合体中使用的潜力。

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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.