Preprint Review Version 1 Preserved in Portico This version is not peer-reviewed

Research Progress on Rhizosphere Microbial Species of Sorghum and Their Impacts on Maximizing Final Yield

Version 1 : Received: 20 June 2023 / Approved: 21 June 2023 / Online: 21 June 2023 (15:28:24 CEST)

How to cite: Sun, W.; Shahrajabian, M. H. Research Progress on Rhizosphere Microbial Species of Sorghum and Their Impacts on Maximizing Final Yield. Preprints 2023, 2023061573. https://doi.org/10.20944/preprints202306.1573.v1 Sun, W.; Shahrajabian, M. H. Research Progress on Rhizosphere Microbial Species of Sorghum and Their Impacts on Maximizing Final Yield. Preprints 2023, 2023061573. https://doi.org/10.20944/preprints202306.1573.v1

Abstract

A large number of studies have indicated that plant community modulate the yield, improve growth and promote development of host plants, and among them rhizosphere growth-promoting bacteria play an important role in increasing crop yield. Bacteria benefit from the plant nutrients provided by the roots, but plants can benefit from their rhizobacteria as well. Rhizobia are considered as the most important candidate for plant growth promotion in comparison with rhizobacteria due to their endophytic nature and nitrogen fixing ability. They can also provide auxins which play a notable function in plant growth and plant-microbe interactions. Bacillus spp., the sporulating Gram-positive bacteria, have important roles in plant growth promotion and induction of systemic resistance. Pseudomonas are Gram-negative aerobic chemoheterotroph and are usually found in the environment. Streptomyces are important groups of soil bacteria from the actinomycetes family. Most of them are efficient rhizosphere and rhizoplane colonizers, and they can also be endophytes colonizing inner tissues of host plants. The present review aims to present the most up-to-date findings and results regarding the effects of plant growth promoting bacteria on yield of different crops, especially sorghum. Furthermore, the mechanisms of the actions of different bacteria briefly illustrated, aiming to present future needs to be addressed in sustainable crop production. Plant growth promoting rhizobacteria inoculation with different plants or treating plants with microbe-to-plant signal constituents can be an effectual technique to stimulate crop growth. They are also active in protecting crops from phytopathogens and environmental stress, plant pathogens and they have positive roles in nutrient cycling.

Keywords

Bacillus; Rhizobium; Pseudomonas; Streptomyces; Growth Promoting Rhizobacteria

Subject

Biology and Life Sciences, Agricultural Science and Agronomy

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