High-yield production of indole-3-acetic acid by Enterobacter sp. DMKU-RP206, a rice phyllosphere bacterium that possesses plant growth-promoting traits

Nutaratat, Pumin; Monprasit, Apitchaya; Srisuk, Nantana

doi:10.1007/s13205-017-0937-9

Cited by 53 publications

(46 citation statements)

References 59 publications

(57 reference statements)

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“…A recent study has identified that Enterobacter sp. was able to secret IAA up to 5561.7 μg/mL using an optimized culture condition [58]. However, in this report, none of the strains was able to show zinc solubilization activity.…”

Section: Plos Onecontrasting

confidence: 54%

Seed biopriming with P- and K-solubilizing Enterobacter hormaechei sp. improves the early vegetative growth and the P and K uptake of okra (Abelmoschus esculentus) seedling

et al. 2020

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Limited information is available that seed biopriming with plant growth-promoting Enterobacter spp. play a prominent role to enhance vegetative growth of plants. Contrary to Enterobacter cloacae, Enterobacter hormaechei is a less-studied counterpart despite its vast potential in plant growth-promotion mainly through the inorganic phosphorus (P) and potassium (K) solubilization abilities. To this end, 18 locally isolated bacterial pure cultures were screened and three strains showed high P-and K-solubilizing capabilities. Light microscopy, biochemical tests and 16S rRNA gene sequencing revealed that strains 15a1 and 40a were closely related to Enterobacter hormaechei while strain 38 was closely related to Enterobacter cloacae (Accession number: MN294583; MN294585; MN294584). All Enterobacter spp. shared common plant growth-promoting traits, namely nitrogen (N 2) fixation, indole-3-acetic acid production and siderophore production. The strains 38 and 40a were able to produce gibberellic acid, while only strain 38 was able to secrete exopolysaccharide on agar. Under in vitro germination assay of okra (Abelmoschus esculentus) seeds, Enterobacter spp. significantly improved overall germination parameters and vigor index (19.6%) of seedlings. The efficacy of root colonization of Enterobacter spp. on the pre-treated seedling root tips was confirmed using Scanning Electron Microscopy (SEM). The pot experiment of bioprimed seeds of okra seedling showed significant improvement of the plant growth (> 28%) which corresponded to the increase of P and K uptakes (> 89%) as compared to the uninoculated control plants. The leaf surface area and the SPAD chlorophyll index of bioprimed plants were increased by up to 29% and 9% respectively. This report revealed that the under-explored species of P-and K-solubilizing Enterobacter hormaechei sp. with multiple plant beneficial traits presents a great potential sustainable approach for enhancement of soil fertility and P and K uptakes of plants.

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Section: Plos Onecontrasting

confidence: 54%

Seed biopriming with P- and K-solubilizing Enterobacter hormaechei sp. improves the early vegetative growth and the P and K uptake of okra (Abelmoschus esculentus) seedling

et al. 2020

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“…These five strains have great potential in promoting plant growth (Fig. 4) and a large number of studies have proved the growth promoting ability of related strains 67,[72][73][74][75][76] . The dominant differential strains screened by non-culture methods (Fig.…”

Section: Discussionmentioning

confidence: 99%

Streptomyces sp. strain TOR3209: a rhizosphere bacterium promoting growth of tomato by affecting the rhizosphere microbial community

et al. 2020

Sci Rep

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Aiming at revealing the possible mechanism of its growth promoting effect on tomato, the correlations among Streptomyces sp. TOR3209 inoculation, rhizobacteriome, and tomato growth/production traits were investigated in this study. By analyses of Illumina sequencing and plate coating, differences in rhizosphere microbial communities were found in different growth stages and distinct inoculation treatments. The plant biomass/fruit yields and relative abundances of families Flavobacteriaceae, Sphingobacteriaceae, Polyangiaceae and Enterobacteriaceae in treatments T (tomato inoculated with TOR3209) and TF (tomato inoculated with TOR3209 + organic fertilizer) were higher than that in the controls (CK and CK+ organic fertilizer), respectively. The analysis of Metastats and LEfSe revealed that the genera Flavobacterium and Sorangium in seedling stage, Klebsiella in flowering stage, Collimonas in early fruit setting stage, and genera Micrococcaceae, Pontibacte and Adhaeribacter in late fruit setting stage were the most representative rhizobacteria that positively responded to TOR3209 inoculation. By cultivation method, five bacterial strains positively correlated to TOR3209 inoculation were isolated from rhizosphere and root endosphere, which were identified as tomato growth promoters affiliated to Enterobacter sp., Arthrobacter sp., Bacillus subtilis, Rhizobium sp. and Bacillus velezensis. In pot experiment, TOR3209 and B. velezensis WSW007 showed joint promotion to tomato production, while the abundance of inoculated TOR3209 was dramatically decreased in rhizosphere along the growth of tomato. Conclusively, TOR3209 might promote the tomato production via changing of microbial community in rhizosphere. These findings provide a better understanding of the interactions among PGPR in plant promotion.

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“…A recent report has identified an Enterobacter sp. that was able to secret IAA up to 5561.7 μg/mL using an optimized culture condition [56]. However, in this report, none of the strains was able to show zinc solubilization activity.…”

Section: Discussionmentioning

confidence: 82%

Seed biopriming with P- and K-solubilizingEnterobacter hormaecheisp. improves the early vegetative growth and the P and K uptake of okra (Abelmoschus esculentus) seedling

Roslan

Zulkifli

Sobri

et al. 2020

Preprint

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3 hormaechei sp. improves the early vegetative growth and 4 the P and K uptake of okra (Abelmoschus esculentus) 5 seedling 6 Muhamad Aidilfitri Abstract 23 Limited information is available that seed biopriming by plant growth-promoting bacteria such 24 as those among Enterobacter spp. play a prominent role to enhance vegetative growth of plants.25 Contrary to Enterobacter cloacae, Enterobacter hormaechei is a less-studied counterpart 26 despite its vast potential in plant growth-promotion mainly through the inorganic phosphorus 27 (P) and potassium (K) solubilization abilities. To this end, 18 locally isolated bacterial pure 28 cultures screened and three strains showed high P-and K-solubilizing capabilities. Light 29 microscopy, biochemical tests and 16S rRNA gene sequencing revealed that strains 15a1 and 30 40a were closely related to Enterobacter hormaechei while strain 38 was closely related to 31 Enterobacter cloacae (Accession number: MN294583; MN294585; MN294584). All 32 Enterobacter spp. shared common plant growth-promoting traits, namely N 2 fixators, indole-33 3-acetic acid producers and siderophore producers. Gibberellic acid was only produced by 34 strain 38 and 40a, while exopolysaccharide formation was solely detected on agar containing 35 colonies of strain 38. Under in vitro germination assay of okra (Abelmoschus esculentus) seeds, 36 Enterobacter spp. significantly improved overall germination parameters and vigor index 37 (19.6%) of seedlings. The efficacy of root colonization of Enterobacter spp. on the pre-treated 38 seedling root tips was confirmed using Scanning Electron Microscopy (SEM). The pot 39 experiment of bioprimed seeds of okra seedling showed significant improvement of the plant 40 growth (> 28%) which corresponded to the increase of P and K uptakes (> 89%) as compared 41 to the uninoculated control plants. The leaf surface area and the SPAD chlorophyll index of 42 bioprimed plants were increased up to 29% and 9% respectively. This report revealed that the 43 under-explored species of P-and K-solubilizing Enterobacter hormaechei sp. with multiple 44 plant beneficial traits hold as a good potential sustainable approach for enhancement of soil 45 fertility and P and K uptakes of plants. 3 46

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High-yield production of indole-3-acetic acid by Enterobacter sp. DMKU-RP206, a rice phyllosphere bacterium that possesses plant growth-promoting traits

Cited by 53 publications

References 59 publications

Seed biopriming with P- and K-solubilizing Enterobacter hormaechei sp. improves the early vegetative growth and the P and K uptake of okra (Abelmoschus esculentus) seedling

Seed biopriming with P- and K-solubilizing Enterobacter hormaechei sp. improves the early vegetative growth and the P and K uptake of okra (Abelmoschus esculentus) seedling

Streptomyces sp. strain TOR3209: a rhizosphere bacterium promoting growth of tomato by affecting the rhizosphere microbial community

Seed biopriming with P- and K-solubilizingEnterobacter hormaecheisp. improves the early vegetative growth and the P and K uptake of okra (Abelmoschus esculentus) seedling

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