Microbes: Bioresource in Agriculture and Environmental Sustainability

Bhargava, Prachi; Singh, Ankit; Goel, Reeta

doi:10.1007/978-981-10-5813-4_18

Cited by 12 publications

(4 citation statements)

References 41 publications

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“…(2020) , at which, though the enormous application of chemical fertilisers benefited countries in providing large amounts of foods, the extended use however has damaged the ecosystem, human health as well as living environments. Moreover, apart generates negative environmental effects, the surplus use of these chemical inputs is costly ( Bhargava et al . 2017 ; Chandini et al .…”

Section: Introductionmentioning

confidence: 99%

Isolation and Identification of Plant Growth Promoting Rhizobacteria from Sago Palm (Metroxylon sagu, Rottb.)

Lihan

Flonia

Husaini

et al. 2021

TLSR

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Plant growth promoting rhizobacteria (PGPR) are strains of naturally occurring soil bacteria that live in close vicinity to the plant’s rhizosphere region which possess the capability to augment host growth. This study was conducted to isolate and identify potential PGPR isolates indigenous to Metroxylon sagu, Rottb. rhizosphere. These potential isolates were characterised based on their beneficial plant growth promoting (PGP) properties and identified by molecular analysis via 16S rDNA sequencing. A total of 18 isolates were successfully isolated, out of which five isolates were tested, and designated as (S1A, S2B, S3A, S3C and S42). Among the five isolates, two isolates (S2B and S3C) were found to produce high levels of indole-3-acetic acid (2.96 μg/mL and 10.31 μg/mL), able to fix nitrogen and show significant activity in phosphate solubilisation. The analysis of their sequences via National Center for Biotechnology Information (NCBI) suggested their close identity towards Lysinibacillus sphaericus and Bacillus thuringiensis. It can be concluded that the isolated PGPR possesses beneficial PGP attributes. It can be implied that the isolated PGPR are potential to be used as inoculant biofertilisers, beneficial for Metroxylon sagu, Rottb. growth. Hence, further studies need to be done to evaluate the effectiveness of the beneficial microbes towards sago seedlings growth, under pot experiment.

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Section: Introductionmentioning

confidence: 99%

Isolation and Identification of Plant Growth Promoting Rhizobacteria from Sago Palm (Metroxylon sagu, Rottb.)

Lihan

Flonia

Husaini

et al. 2021

TLSR

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“…These bacteria are known as plant growth-promoting rhizobacteria (PGPR) ( Cook et al, 1995 ; Alexander et al, 2019b ). PGPR enhance the plant growth and development in several ways, including via nitrogen fixation, phosphate solubilization, production of phytohormones, ACC deaminase activity, production of exopolysaccharide (EPS), priming the plant immunity (induced systemic resistance; ISR), acting as a biocontrol agent, and increasing the plant antioxidant enzymes that are produced under stress conditions, such as the ascorbate peroxidase (APX), the catalase (CAT), and the glutathione reductase (GR) ( Kloepper et al, 2004 ; Arevalo-Ferro et al, 2005 ; Yang et al, 2009 : Upadhyay et al, 2012 ; Bal et al, 2013 ; Bhargava et al, 2017 ; Sarkar et al, 2018 ).…”

Section: Introductionmentioning

confidence: 99%

Halotolerant PGPR Stenotrophomonas maltophilia BJ01 Induces Salt Tolerance by Modulating Physiology and Biochemical Activities of Arachis hypogaea

2020

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Arachis hypogaea (Peanut) is one of the most important cash crops grown for food and oil production. Salinity is a major constraint for loss of peanut productivity, and halotolerant plant growth promoting bacteria not only enhance plant-growth but also provide tolerance against salt stress. The potential of halotolerant bacterium Stenotrophomonas maltophilia BJ01 isolated from saline-soil was explored to enhance the growth of peanut plants under salt stress conditions. Interaction of S. maltophilia BJ01 enhances the growth of the peanut plants and protects photosynthetic pigments under salt stress. Lower electrolyte leakage (about 20%), lipid peroxidation (2.1 μmol g –1 Fw), proline (2.9 μg mg –1 Fw) content and H 2 O 2 (55 μmol g –1 Fw) content were observed in plants, co-cultivated with PGPR compared to untreated plants under stress condition. The growth hormone auxin (0.4 mg g –1 Fw) and total amino acid content (0.3 mg g –1 Fw) were enhanced in plants co-cultivated with PGPR under stress conditions. Overall, these results indicate the beneficial effect of S. maltophilia BJ01 on peanut plants under salt (100 mM NaCl) stress conditions. In conclusion, bacterium S . maltophilia BJ01 could be explored further as an efficient PGPR for growing legumes especially peanuts under salt stress conditions. However, a detailed agronomic study would be needed to ascertain its commercial role.

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“…To overcome such problems, microbes plays a significant role in the removal of pollutant because they have a capability to undergo special mechanisms like that breakdown of the complex molecules of pollutants that normally can't be degraded (Bhargava et al 2017;Kumar et al 2021;Mishra et al 2017). Acinetobacter sp., Arthrobacter sp., Bacillus sp., Corynebacterium sp., Flavobacterium sp., Micrococcus sp., Mycobacterium sp., Nocardia sp., and Pseudomonas sp., are some bacterial genera that have been used for the bioremediation of pesticides, heavy metals and other toxic metals which successfully improves the environment (Beškoski et al 2012;Milić et al 2009) (Table 3).…”

Section: Role Of Soil Microbes In Environmental Sustainabilitymentioning

confidence: 99%

Plant growth promoting soil microbiomes and their potential implications for agricultural and environmental sustainability

et al. 2021

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Soil microbial diversity is very important part of ecosystem as it plays a significant role in biogeochemical cycles. Currently, health of environment has been depleted due to growing population of the world and human activities like industrialization, overexploitation of chemical based products in agriculture and urbanization. These problems are now being of major concern of the environmentalist and to fix these problems has become an emergence. Soil microbiomes have been recognized as a potent tool for the sustainable agriculture and environment. Such microbes exhibit hidden talent to overcome the environmental related problem like pollution and soil degradation. In agriculture, soil microbiomes can be used as a biofertilizers over the chemical based products. Soil microbes help in reclamation of soil fertility, alleviation of diverse abiotic stresses, and nutrients stress that help in plant growth and development. Soil microbes help plant for growth via direct mechanisms for enhancing plant growth directly in a sustainable way like solubilization of nutrients (P, K, and Zn), fixation of nitrogen and chelation of iron as well as via indirectly by controlling pathogen growth and alleviating abiotic stress. In environment, beneficial soil microbiomes help in the degradation of environment pollutants like chemical pesticides and industrial waste by enzymatic actions and biosorption techniques. Present review deals with the diversity of soil microbiomes and their role in plant growth promotion and remediation of diverse environmental pollutants for agro-environmental sustainability.

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Microbes: Bioresource in Agriculture and Environmental Sustainability

Cited by 12 publications

References 41 publications

Isolation and Identification of Plant Growth Promoting Rhizobacteria from Sago Palm (Metroxylon sagu, Rottb.)

Isolation and Identification of Plant Growth Promoting Rhizobacteria from Sago Palm (Metroxylon sagu, Rottb.)

Halotolerant PGPR Stenotrophomonas maltophilia BJ01 Induces Salt Tolerance by Modulating Physiology and Biochemical Activities of Arachis hypogaea

Plant growth promoting soil microbiomes and their potential implications for agricultural and environmental sustainability

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