Plant Growth Promoting Actinobacteria: A New Avenue for by Gopalakrishnan Subramaniam, Sathya Arumugam, Vijayabharathi

By Gopalakrishnan Subramaniam, Sathya Arumugam, Vijayabharathi Rajendran

Global yields of legumes were quite stagnant for the final 5 many years, regardless of the adoption of traditional and molecular breeding techniques. using plant growth-promoting (PGP) micro organism for bettering agricultural creation, soil and plant wellbeing and fitness has turn into the most appealing suggestions for constructing sustainable agriculture. Actinomycetes are micro organism that play a tremendous function in PGP and plant safeguard, produce secondary metabolites of business curiosity, and their use is definitely documented in wheat, rice, beans, chickpeas and peas. in an effort to advertise legumes, the final meeting of the UN lately declared 2016 the “International yr of Pulses.” In view of this improvement, this ebook illustrates how PGP actinomycetes can increase grain yield and soil fertility, increase regulate of insect pests and phytopathogens, and increase host-plant resistance. It additionally addresses distinct issues of present curiosity, e.g. the function of PGP actinomycetes within the biofortification of legume seeds and bioremediation of heavy metals.

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Extra info for Plant Growth Promoting Actinobacteria: A New Avenue for Enhancing the Productivity and Soil Fertility of Grain Legumes

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Geldonus was reported to suppress the growth of Rhizoctonia solani by Rothrock and Gottlieb (1984). Streptomyces spp. were reported for direct growth enhancement and antibiotic production to control root rot caused by Phytophthora sojae in soybean. Population densities of pathogen were effectively reduced under controlled conditions with naturally infested soil (Xiao et al. 2002). The production of cell wall-degrading enzymes has been reported as a biocontrol mechanism by certain Actinobacteria.

Several pathogens are reported to hamper the production of grain legumes. Important diseases of grain legumes include sterility mosaic, Fusarium wilt and Phytophthora blight of pigeon pea and Botrytis gray mold, Ascochyta blight, and Fusarium wilt of chickpea. Biological control of plant pathogens is a sustainable solution of disease management. Tu (1988) reported the parasitization of Colletotrichum lindemuthianum by the soil Actinobacteria S. griseus. It was noted that the pathogen produced appersorium-like swellings on the surface of hyphae.

In: Torriani-Gorini A, Yagil E, Silver S (eds) Phosphate in microorganism: cellular and molecular biology. ASM Press, Washington, DC, pp 197–203 Goodfellow M, Williams ST (1983) Ecology of actinomycetes. Annu Rev Microbiol 37:189–216 S. Nimaichand et al. Gopalakrishnan S, Srinivas V, Vidya MS, Rathore A (2013) Plant growth-promoting activities of Streptomyces spp. in sorghum and rice. SpringerPlus 3:254 Gopalakrishnan S, Srinivas V, Alekhya G, Prakash B (2015a) Effect of plant growth-promoting Streptomyces sp.

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