Emerging Role of Plant Growth Promoting Rhizobacteria in Agrobiology

Aeron, Abhinav; Kumar, Shiv; Pandey, Piyush; Maheshwari, Dinesh Kumar

doi:10.1007/978-3-642-18357-7_1

Cited by 65 publications

(37 citation statements)

References 205 publications

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“…Though the exact mechanism of growth promotion was not investigated in this study but may be the growth of blueberry promoted due to interaction of inoculated bacteria with plant roots. According to previous studies that many strains of B. subtilis, B. amyloliquefaciens and B. cereus interact with plant and suppress plant pathogens (Choudhary and Johri, 2009), solubilizing nutrients, fixing nitrogen, secreting growth regulators (de-Bashan, 2010), and producing growthregulating substances (Brown and Surgeoner, 1991), siderophores, HCN and lytic enzymes in the rhizosphere resulting plant growth promotion (Aeron et al, 2011). The in vitro and in vivo growth promotion traits of bacteria used in this study were well documented in our previous studies (Nguyen et al, 2013;Kyaw et al, 2014;Lee and Kim, 2015;Jamal et al, 2015).…”

Section: Discussionmentioning

confidence: 99%

THE COMBINED USE OF FIVE BACTERIA INCLUDING BACILLUS AMYLOLIQUEFACIENS Y1 AS BIOFERTILIZER IN COMPOST IMPROVED LOW BUSH BLUEBERRY GROWTH, RHIZOSPHERE BACTERIA AND ENZYME AT VARIOUS pH

Jamal¹

2018

PAKJAS

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The present study was performed to investigate blueberry compost material alternative to commercially available one mainly containing peat moss and evaluate its potential in pot experiment using five bacteria. Initially, we divided our made compost (M) into three types based on pH (4.5, 5.5 and 7) using H2SO4. In physiochemical analysis, each type of M was found to have different composition of N P, Ca, Mg, Mn and S and higher than commercial compost. Our results indicate negative effects of acidification on bacterial population, diversity and activities of protease, chitinase, and cellulase in M compost. In blueberry pot experiment, plants were grown in 4.5 M, 5.5 M, 4.5 C and 7 M. Two types of treatments were performed including chemical fertilizer (F) and the other type contained bacterial culture (C) including B. amyloliquefaciens Y1, B. licheniformis MH48, B. pumilus L1, P. ehmensis KWN38 and P. elgii HOA73 grown together in broth containing chitin powder. The use of biofertilizers significantly increased plant biomass compared to all fertilizer treatments and pH 7 M treated with bacterial culture (C) has highest value among all treatments. Inoculation of bacteria not only increased total number and type of bacteria but also improved chitinase and gelatinase in rhizosphere of blueberry plants. These results suggest that our made compost can be used as blueberry compost and inoculation of five bacteria have positive effects on blueberry growth, bacterial population and enzyme activities in compost at various pH.

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Section: Discussionmentioning

confidence: 99%

THE COMBINED USE OF FIVE BACTERIA INCLUDING BACILLUS AMYLOLIQUEFACIENS Y1 AS BIOFERTILIZER IN COMPOST IMPROVED LOW BUSH BLUEBERRY GROWTH, RHIZOSPHERE BACTERIA AND ENZYME AT VARIOUS pH

Jamal¹

2018

PAKJAS

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“…These enzymes either digest the enzymes or deform components of cell wall of fungal pathogens. It is one of the important mechanisms for environment friendly control of soil-borne pathogen [46]. These enzymes also decompose nonliving organic matter and plant residues to obtain carbon nutrition.…”

Section: Lytic Enzymesmentioning

confidence: 99%

Antagonistic features displayed by Plant Growth Promoting Rhizobacteria (PGPR): A Review

M¹

2017

J Plant Sci Phytopathol

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Soil dwelling bacteria able to colonize plant roots and closely associated soil are referred to as rhizobacteria. A wide range of rhizobacteria has the ability to promote plant growth directly by producing phytohormone and nutrients; and indirectly by controlling plant pathogen. These benefi cial bacteria are known as plant growth promoting rhizobacteria (PGPR). PGPR control phytopathogens by producing chemicals that could damage pathogen cells, removing pathogen specifi c nutrients from the environment, or inducing resistance against pathogen in plant body. Antagonistic bacteria specifi cally damage pathogens by producing lytic enzymes, antibiotics and bacteriocins; and excluding pathogen from plant environment by siderophores oriented iron chelation. This review highlights the antagonistic feature of PGPR. Application of antagonistic bacteria as biopesticides is an attractive alternate of chemical pesticides. Chemical pesticides are non-targeted and cause pollution during its synthesis as well as at the site of application. Antagonistic bacteria could be used as biopesticides and biofertilizers for better plant health and growth improvement.

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“…Whereas bacterial chitinase, siderophores, HCN etc. produced in the rhizosphere can indirectly support the plant growth by suppressing hazardous effects of biotic stresses (Aeron et al 2011;Ribeiro and Cardoso 2012).…”

Section: Introductionmentioning

confidence: 98%

Alleviation of salt stress in germination of Vigna radiata L. by two halotolerant Bacilli sp. isolated from saline habitats of Gujarat

Patel

Thakor

et al. 2014

Plant Growth Regul

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Fifty halotolerant bacterial strains were isolated from the alkaline saline soil from the Ajod village of Vadodara district of Gujarat. All strains grew well in media supplemented with 5 % NaCl, but two strains (BR5 and BN7) could grow even at 18 % NaCl concentration. These two strains were characterized for their plant growth promoting characteristics. Both the strains were able to solubilize significant amount of phosphate and produce IAA. Both the strains also showed nitrogen fixing, siderophore production and antifungal properties against root rot pathogen of Vigna. radiata L., Fusarium sp. Potential of these halotolerant bacteria to ameliorate salt stress in V. radiata L. plants grown in saline soil inoculated with these bacteria was assessed. Both halotolerant bacteria were found to increase germination percentage, root length and shoot length compared to un inoculated control plants. Both these cultures were subjected to 16S rRNA gene sequencing and BLAST analysis, among which, BR5 showed 99 % similarity with Bacillus subtilis and BN7 showed 99 % similarity with B. megaterium.

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Emerging Role of Plant Growth Promoting Rhizobacteria in Agrobiology

Cited by 65 publications

References 205 publications

THE COMBINED USE OF FIVE BACTERIA INCLUDING BACILLUS AMYLOLIQUEFACIENS Y1 AS BIOFERTILIZER IN COMPOST IMPROVED LOW BUSH BLUEBERRY GROWTH, RHIZOSPHERE BACTERIA AND ENZYME AT VARIOUS pH

THE COMBINED USE OF FIVE BACTERIA INCLUDING BACILLUS AMYLOLIQUEFACIENS Y1 AS BIOFERTILIZER IN COMPOST IMPROVED LOW BUSH BLUEBERRY GROWTH, RHIZOSPHERE BACTERIA AND ENZYME AT VARIOUS pH

Antagonistic features displayed by Plant Growth Promoting Rhizobacteria (PGPR): A Review

Alleviation of salt stress in germination of Vigna radiata L. by two halotolerant Bacilli sp. isolated from saline habitats of Gujarat

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