Screening of Nitrogen Fixing Endophytic Bacteria in Oryza sativa L.

Hongrittipun, Prathana; Youpensuk, Somchit; Rerkasem, Benjavan

doi:10.5539/jas.v6n6p66

Cited by 15 publications

(14 citation statements)

References 26 publications

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“…It was reasonable to presume that it can fix the nitrogen elements on the plant roots by a nitrogen fixation mechanism, thereby achieving the purpose of absorbing nutrients. Our conclusion was confirmed by Hongrittipun et al [47]. Nitrogen fixation was mostly found in Rhizobia spp.…”

Section: Qualitative Analysis Of Nitrogen Fixation and Siderophore Productionsupporting

confidence: 90%

Biological Inoculant of Salt-Tolerant Bacteria for Plant Growth Stimulation under Different Saline Soil Conditions

Wang

Feng

2021

J. Microbiol. Biotechnol.

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Using salt-tolerant bacteria to protect plants from salt stress is a promising microbiological treatment strategy for saline–alkali soil improvement. Here, we conducted research on the growthpromoting effect of Brevibacterium frigoritolerans on wheat under salt stress, which has rarely been addressed before. The synergistic effect of B. frigoritolerans combined with representative salttolerant bacteria Bacillus velezensis and Bacillus thuringiensis to promote the development of wheat under salt stress was also further studied. Our approach involved two steps: investigation of the plant growth-promoting traits of each strain at six salt stress levels (0, 2, 4, 6, 8, and 10%); examination of the effects of the strains (single or in combination) inoculated on wheat in different salt stress conditions (0, 50, 100, 200, 300, and 400 mM). The experiment of plant growth-promoting traits indicated that among three strains, B. frigoritolerans had the most potential for promoting wheat parameters. In single-strain inoculation, B. frigoritolerans showed the best performance of plant growth promotion. Moreover, a pot experiment proved that the plant growth-promoting potential of co-inoculation with three strains on wheat is better than single-strain inoculation under salt stress condition. Up to now, this is the first report suggesting that B. frigoritolerans has the potential to promote wheat growth under salt stress, especially combined with B. velezensis and B. thuringiensis .

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Section: Qualitative Analysis Of Nitrogen Fixation and Siderophore Productionsupporting

confidence: 90%

Biological Inoculant of Salt-Tolerant Bacteria for Plant Growth Stimulation under Different Saline Soil Conditions

Wang

Feng

2021

J. Microbiol. Biotechnol.

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“…and Citrobacter spp. have also been reported to fix atmospheric-N (Mutalib et al, 2012;Hongrittipun et al, 2014), solubilize phosphate, synthesize of plant growth hormones and increase growth and yield of rice (Yadav et al, 2011;Ng et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

Molecular Characterization of Stress Tolerant Plant Growth Promoting Rhizobacteria (PGPR) for Growth Enhancement of Rice

Habib¹,

Kausar²,

Saud³

et al. 2015

IJAB

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The study was undertaken to characterize plant growth promoting rhizobacteria (PGPR) for growth enhancement and stress tolerant traits and their efficacy on early establishment of rice seedling. In vitro growth promoting traits revealed that out of 30 PGPR isolates, 18 fixed nitrogen, 17 solubilized tri-calcium phosphate, 29 and 17 produced IAA with or without addition of L-tryptophane. In case of stress tolerant activities, PGPR isolates tolerated pH ranging from 5 to 10, Nacl from 1 to 6% and polyethylene glycol (PEG) from 10 to 40%, respectively. They showed antagonistic activity against Pyricularia oryzae with PIRG values ranging from 7−68%. After two-stage of screening, isolates UPMR7 and UPMR17 were identified based on 16s rRNA gene sequences and matched to the genus Bacillus and Citrobacter with 97−98% similarity. UPMR 7 and UPMR 17 were further evaluated on early growth promotion of rice variety MR219. Results revealed that PGPR inoculation had significant effects on plant growth compared to non-inoculated plants. Thus, it could be suggested that the isolates UPMR7 and UPMR17 have the potential to be used as biofertilizer and bioenhancer in sustainable rice cultivation.

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“…To test the ability of all the bacterial isolates in dissolving phosphate, the researchers used National Botanical Research Institutes Phosphate -Bromophenol blue (NBRIP- (15). About 10µl of the overnight culture of isolates, containing10 7 cells mL -1 was inoculated on NBRIP-BPB medium and was then incubated for 3 days at 30°C.…”

Section: Screening For Traits Related To Plant Growth Promotionmentioning

confidence: 99%

Impact of Soil Salinity on Diversity and Community of Sugarcane Endophytic Plant Growth Promoting Bacteria (Saccharum Officinarum L. Var. Cp48)

Pirhadi¹

2018

Appl. Ecol. Env. Res.

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Pirhadi et al.: Impact of soil salinity on diversity and community of sugarcane endophytic plant growth promoting bacteria (Saccharum officinarum L. Abstract. The aim of this study was to isolate and identify culturable bacterial endophytes from sugarcane grown in saline and non-saline soil and assay some plant growth-related traits and evaluate selective isolate potential to improve growth, yield and grain phosphorus uptake of wheat. Endophytic bacteria associated with sugarcane grown in saline and non-saline soil were isolated from roots, stems and leave and tested for their ability to fix nitrogen, indole acetic acid (IAA) production and dissolution of insoluble phosphorus. A total of 55 endophytic bacteria were isolated from leaves, stems, and roots of sugarcane from saline and nonsaline soil. The results revealed a prevalence of Bacillaceae, with Bacillus sp. being the most frequently isolated bacterium. Salinity had the effect on bacterial community structure with the higher diversity of root entophytic bacteria in saline soils. From the isolates, four strains were shown to produce IAA and 19 strains showed the ability to solubilize phosphate, but twelve isolates having the best characteristics tests were identified using 16S rRNA gene sequencing. From the isolates Pseudomonas sp. SugS_49 with more phosphorus dissolution ability selected for evaluation on wheat growth. Application of Pseudomonas sp. SugS_49 caused increased growth, grain yield and phosphorus uptake of wheat.

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Screening of Nitrogen Fixing Endophytic Bacteria in Oryza sativa L.

Cited by 15 publications

References 26 publications

Biological Inoculant of Salt-Tolerant Bacteria for Plant Growth Stimulation under Different Saline Soil Conditions

Biological Inoculant of Salt-Tolerant Bacteria for Plant Growth Stimulation under Different Saline Soil Conditions

Molecular Characterization of Stress Tolerant Plant Growth Promoting Rhizobacteria (PGPR) for Growth Enhancement of Rice

Impact of Soil Salinity on Diversity and Community of Sugarcane Endophytic Plant Growth Promoting Bacteria (Saccharum Officinarum L. Var. Cp48)

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