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Bacterial Plant Biostimulants: A Sustainable Way towards Improving Growth, Productivity, and Health of Crops
Sustainability ( IF 3.9 ) Pub Date : 2021-03-06 , DOI: 10.3390/su13052856
Basharat Hamid , Muzafar Zaman , Shabeena Farooq , Sabah Fatima , R. Z. Sayyed , Zahoor Ahmad Baba , Tahir Ahmad Sheikh , Munagala S. Reddy , Hesham El Enshasy , Abdul Gafur , Ni Luh Suriani

This review presents a comprehensive and systematic study of the field of bacterial plant biostimulants and considers the fundamental and innovative principles underlying this technology. Plant biostimulants are an important tool for modern agriculture as part of an integrated crop management (ICM) system, helping make agriculture more sustainable and resilient. Plant biostimulants contain substance(s) and/or microorganisms whose function when applied to plants or the rhizosphere is to stimulate natural processes to enhance plant nutrient uptake, nutrient use efficiency, tolerance to abiotic stress, biocontrol, and crop quality. The use of plant biostimulants has gained substantial and significant heed worldwide as an environmentally friendly alternative to sustainable agricultural production. At present, there is an increasing curiosity in industry and researchers about microbial biostimulants, especially bacterial plant biostimulants (BPBs), to improve crop growth and productivity. The BPBs that are based on PGPR (plant growth-promoting rhizobacteria) play plausible roles to promote/stimulate crop plant growth through several mechanisms that include (i) nutrient acquisition by nitrogen (N2) fixation and solubilization of insoluble minerals (P, K, Zn), organic acids and siderophores; (ii) antimicrobial metabolites and various lytic enzymes; (iii) the action of growth regulators and stress-responsive/induced phytohormones; (iv) ameliorating abiotic stress such as drought, high soil salinity, extreme temperatures, oxidative stress, and heavy metals by using different modes of action; and (v) plant defense induction modes. Presented here is a brief review emphasizing the applicability of BPBs as an innovative exertion to fulfill the current food crisis.

中文翻译:

细菌植物生物刺激剂:改善作物生长,生产力和健康的可持续方法

这篇评论提出了细菌植物生物刺激剂领域的全面和系统的研究,并考虑了这项技术的基本和创新原则。植物生物刺激剂是现代农业的重要工具,是作物综合管理(ICM)系统的一部分,有助于使农业更具可持续性和弹性。植物生物刺激物包含一种或多种物质和/或微生物,当应用于植物或根际时,其功能是刺激自然过程,以增强植物养分的吸收,养分利用效率,对非生物胁迫的耐受性,生物防治和作物品质。作为可持续农业生产的一种环境友好替代品,植物生物兴奋剂的使用已在世界范围内引起了广泛关注。现在,工业界和研究人员对微生物生物刺激物,特别是细菌植物生物刺激物(BPBs)的兴趣日益增加,以改善作物的生长和生产力。基于PGPR(植物生长的根瘤菌)的BPB通过多种机制,在促进/刺激农作物生长方面发挥了可能的作用,这些机制包括:(i)氮素吸收养分(N2)固定和溶解不溶性矿物(P,K,Zn),有机酸和铁载体;(ii)抗菌代谢产物和各种裂解酶;(iii)生长调节剂和应激反应/诱导的植物激素的作用;(iv)通过采取不同的作用方式来缓解非生物胁迫,例如干旱,高土壤盐分,极端温度,氧化胁迫和重金属;(v)植物防御诱导模式。本文简要介绍了BPBs作为解决当前粮食危机的创新手段的适用性。
更新日期:2021-03-07
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