Bacillus and Paenibacillus spp.: Potential PGPR for Sustainable Agriculture

Govindasamy, Venkadasamy; Senthilkumar, M.; Magheshwaran, Vellaichamy; Kumar, Upendra; Bose, P. C.; Sharma, Vikas; Annapurna, K.

doi:10.1007/978-3-642-13612-2_15

Cited by 130 publications

(82 citation statements)

References 134 publications

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“…In the rhizosphere, species of the genus Bacillus and Paenibacillus are involved in atmospheric nitrogen fixation, solubilization of soil phosphorus and uptake of micronutrients, and production of phytohormones and antimicrobial metabolites as reported by Govindasamy et al (2011). On the siderophore production test, 5 isolated strains showed positive results while others showed weak results.…”

Section: Discussionmentioning

confidence: 82%

Paenibacillus yonginensis DCY84T induces changes in Arabidopsis thaliana gene expression against aluminum, drought, and salt stress

Sukweenadhi

Kim

Choi

et al. 2015

Microbiological Research

104

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Current agricultural production methods, for example the improper use of chemical fertilizers and pesticides, create many health and environmental problems. Use of plant growth-promoting bacteria (PGPB) for agricultural benefits is increasing worldwide and also appears to be a trend for the future. There is possibility to develop microbial inoculants for use in agricultural biotechnology, based on these beneficial plant-microbe interactions. For this study, ten bacterial strains were isolated from Yongin forest soil for which in vitro plant-growth promoting trait screenings, such as indole acetic acid (IAA) production, a phosphate solubilization test, and a siderophore production test were used to select two PGPB candidates. Arabidopsis thaliana plants were inoculated with Paenibacillus yonginensis DCY84(T) and Micrococcus yunnanensis PGPB7. Salt stress, drought stress and heavy metal (aluminum) stress challenges indicated that P. yonginensis DCY84(T)-inoculated plants were more resistant than control plants. AtRSA1, AtVQ9 and AtWRKY8 were used as the salinity responsive genes. The AtERD15, AtRAB18, and AtLT178 were selected to check A. thaliana responses to drought stress. Aluminum stress response was checked using AtAIP, AtALS3 and AtALMT1. The qRT-PCR results indicated that P. yonginensis DCY84(T) can promote plant tolerance against salt, drought, and aluminum stress. P. yonginensis DCY84(T) also showed positive results during in vitro compatibility testing and virulence assay against X. oryzae pv. oryzae Philippine race 6 (PXO99). Better germination rates and growth parameters were also recorded for the P. yonginensis DCY84(T) Chuchung cultivar rice seed which was grown on coastal soil collected from Suncheon. Based on these results, P. yonginensis DCY84(T) can be used as a promising PGPB isolate for crop improvement.

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Section: Discussionmentioning

confidence: 82%

Paenibacillus yonginensis DCY84T induces changes in Arabidopsis thaliana gene expression against aluminum, drought, and salt stress

Sukweenadhi

Kim

Choi

et al. 2015

Microbiological Research

104

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“…Rhizosphere possess 100 folds higher bacterial density than in bulk soil as 5-21% of plant photosynthetic product is secreted by roots in form of different sugars which is in turn utilized by microbial populations (Govindasamy et al, 2011;Jha, Patel, Rajendran, & Saraf, 2010). Thus, the rhizospheric soil was selected for present study to isolate efficient strain (P. mucilaginosus strain N3) that can be categorized as efficient PGPR.…”

Section: Discussionmentioning

confidence: 99%

Describing Paenibacillus mucilaginosus strain N3 as an efficient plant growth promoting rhizobacteria (PGPR)

Goswami

Parmar

Vaghela

et al. 2015

Cogent Food & Agriculture

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Bacterium Paenibacillus mucilaginosus strain N3 was isolated from agricultural farm soil (located at Boriavi village, Gujarat, India). Isolate showed an evidence of non-symbiotic nitrogen fixation, when grown in nitrogen-free bromothymol blue growth medium. It was tested positive for direct plant-growth-promoting traits like Indole-3-acetic acid production, solubilization of Tri-calcium-phosphate, and ammonia production. Further, N3 isolate was tested positive for siderophore production of catecholate type and catalase production as an indirect plant-growth-promoting trait. Biochemical tests along with 16s rRNA gene sequence analysis confirmed the strain N3 to be P. mucilaginosus. To determine its efficacy as a plant-growth-promoting rhizobacteria (PGPR), its talc-based biofertilizer was prepared and tested on the growth of green gram (Vigna radiata). Seeds treated with this biofertilizer showed an increase in overall dry biomass by 17% and sapling length by 28% (as compared to non-treated controls) after 10 days of sowing in pots. Thus, multiple plant-growth-promoting traits of P. mucilaginosus N3 determined in vitro along with its ability to promote growth in green gram in vivo we characterize this strain as an efficient PGPR.

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“…Due to the risk of internalization, Salmonella needs to be controlled at the farm level. Biological control has been widely applied to suppress plant diseases caused by phytopathogens (31,32). However, few control agents have been reported to control human food-borne pathogens on produce, especially at the preharvest level.…”

Section: Discussionmentioning

confidence: 99%

In Situ Evaluation of Paenibacillus alvei in Reducing Carriage of Salmonella enterica Serovar Newport on Whole Tomato Plants

Allard

Enurah

Strain

et al. 2014

Appl Environ Microbiol

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dRecently, tomatoes have been implicated as a primary vehicle in food-borne outbreaks of Salmonella enterica serovar Newport and other Salmonella serovars. Long-term intervention measures to reduce Salmonella prevalence on tomatoes remain elusive for growing and postharvest environments. A naturally occurring bacterium identified by 16S rRNA gene sequencing as Paenibacillus alvei was isolated epiphytically from plants native to the Virginia Eastern Shore tomato-growing region. After initial antimicrobial activity screening against Salmonella and 10 other bacterial pathogens associated with the human food supply, strain TS-15 was further used to challenge an attenuated strain of S. Newport on inoculated fruits, leaves, and blossoms of tomato plants in an insect-screened high tunnel with a split-plot design. Survival of Salmonella after inoculation was measured for groups with and those without the antagonist at days 0, 1, 2, and 3 and either day 5 for blossoms or day 6 for fruits and leaves. Strain TS-15 exhibited broad-range antimicrobial activity against both major food-borne pathogens and major bacterial phytopathogens of tomato. After P. alvei strain TS-15 was applied onto the fruits, leaves, and blossoms of tomato plants, the concentration of S. Newport declined significantly (P < 0.05) compared with controls. Astonishingly, >90% of the plants had no detectable levels of Salmonella by day 5 for blossoms. The naturally occurring antagonist strain TS-15 is highly effective in reducing the carriage of Salmonella Newport on whole tomato plants. The application of P. alvei strain TS-15 is a promising approach for reducing the risk of Salmonella contamination during tomato production.

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Bacillus and Paenibacillus spp.: Potential PGPR for Sustainable Agriculture

Cited by 130 publications

References 134 publications

Paenibacillus yonginensis DCY84T induces changes in Arabidopsis thaliana gene expression against aluminum, drought, and salt stress

Paenibacillus yonginensis DCY84T induces changes in Arabidopsis thaliana gene expression against aluminum, drought, and salt stress

Describing Paenibacillus mucilaginosus strain N3 as an efficient plant growth promoting rhizobacteria (PGPR)

In Situ Evaluation of Paenibacillus alvei in Reducing Carriage of Salmonella enterica Serovar Newport on Whole Tomato Plants

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