Gopalakrishnan, S and Srinivas, V and Prasanna, S L (2020) Streptomyces. In: Beneficial Microbes in Agro-Ecology. Academic Press Inc, pp. 55-71. ISBN 978-0128172308

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Streptomyces is a Gram-positive bacterium, with a high guanine þ cytosine (G þ C) content, belonging to the family Streptomycetaceae and order Actinomycetales. It is found commonly in marine and fresh water, rhizosphere soil, compost, and vermicompost. Streptomyces plays an important role in the plant growth promotion (PGP), plant health promotion (crop protection), degradation of organic residues, and production of byproducts (secondary metabolites) of commercial interest in agriculture and medical fields. Streptomyces, in the rhizosphere and rhizoplane, help crops in enhancing shoot and root growth, grain and stover yield, biologic nitrogen fixation, solubilization of minerals (such as phosphorus and zinc), and biocontrol of insect pests and plant pathogens. There is a growing interest in the use of secondary metabolites produced by Streptomyces such as blasticidin-s, kusagamycin, streptomycin, oxytetracycline, validamycin, polyoxins, natamycin, actinovate, mycostop, abamectin/ avermectins, emamectin benzoate, polynactins and milbemycin for the control of insect pests and plant pathogens as these are highly specific, readily degradable, and less toxic to environment (Aggarwal et al., 2016). The PGP potential of Streptomyces is well documented in tomato, wheat, rice, bean, chickpea, pigeonpea, and pea. This chapter emphasizes the usefulness of Streptomyces in PGP, grain and stover yields, soil fertility, and plant health promotion.

Item Type: Book Section
Divisions: Research Program : Asia
CRP: CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC)
Uncontrolled Keywords: Streptomyces, bacteria, Microbes, Plant Health, Plant Pathology
Subjects: Others > Plant Pathology
Others > Plant Growth
Depositing User: Mr Arun S
Date Deposited: 19 Jun 2020 05:50
Last Modified: 19 Jun 2020 05:50
Acknowledgement: The authors wish to acknowledge CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC) for their generous support for preparing this chapter. ICRISAT is a member of CGIAR Consortium. We thank Mr. PVS Prasad for his enthusiastic technical assistance.
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