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Significance of Plant Growth Promoting Rhizobacteria in Grain Legumes: Growth Promotion and Crop Production

机译:植物生长促进粮食豆类流脉杆菌的意义:增长促进和作物生产

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摘要

Grain legumes are an important component of sustainable agri-food systems. They establish symbiotic association with rhizobia and arbuscular mycorrhizal fungi, thus reducing the use of chemical fertilizers. Several other free-living microbial communities (PGPR—plant growth promoting rhizobacteria) residing in the soil-root interface are also known to influence biogeochemical cycles and improve legume productivity. The growth and function of these microorganisms are affected by root exudate molecules secreted in the rhizosphere region. PGPRs produce the chemicals which stimulate growth and functions of leguminous crops at different growth stages. They promote plant growth by nitrogen fixation, solubilization as well as mineralization of phosphorus, and production of phytohormone(s). The co-inoculation of PGPRs along with rhizobia has shown to enhance nodulation and symbiotic interaction. The recent molecular tools are helpful to understand and predict the establishment and function of PGPRs and plant response. In this review, we provide an overview of various growth promoting mechanisms of PGPR inoculations in the production of leguminous crops.
机译:粮食豆类是可持续农业食品系统的重要组成部分。它们与根扎比亚建立了共生关联和丛枝菌根真菌,从而减少了化学肥料的使用。还已知几个其他自由生物微生物群落(PGPR-植物生长促进促进无根茎),其驻留在土根界面中,以影响生物地球化学循环,提高豆科生产率。这些微生物的生长和功能受根际区域分泌的根渗出物分子的影响。 PGPRS产生刺激不同生长阶段的豆科作物的生长和功能的化学品。它们通过氮固定,溶解以及磷的矿化和植物激素的生产来促进植物生长和植物激素。 PGPRS与根瘤菌共同接种已显示提高染色瘤和共生相互作用。最近的分子工具有助于理解和预测PGPRS和植物反应的建立和功能。在本综述中,我们概述了在生产豆科作物中PGPR接种的各种增长促进机制。

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