Salt-tolerant and plant growth-promoting bacteria isolated from Zn/Cd contaminated soil: identification and effect on rice under saline conditions

Nakbanpote, Woranan; Panitlurtumpai, Natthawoot; Sangdee, Aphidech; Sakulpone, Narongrit; Sirisom, Pawinee; Pimthong, Apinya

doi:10.1080/17429145.2013.842000

Cited by 77 publications

(30 citation statements)

References 41 publications

(51 reference statements)

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“…Egamberdiyeva (2009) [42] reported that IAA-producing bacteria significantly increased plant growth under salt stress. In addition, Nakbanpote et al, (2014) [43] also reported that Pseudomonas sp. PDMZnCd2003 isolated from from a Zn/Cd contaminated soil was classified as salt-tolerant bacteria.…”

Section: Nacl Concentrationmentioning

confidence: 98%

Isolation and Characterization of Indole Acetic Acid Producing Halophilic Bacteria from Salt Affected Soil of Rice–Shrimp Farming System in the Mekong Delta, Vietnam

Nghĩa¹

2017

AFF

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Abstract:The main aim of this study was to deal with isolation, characterization and identification IAA producing bacteria from paddy rice cultivated soil samples collected in rice-shrimp farming system in salt affected areas of the Mekong Delta of Vietnam. Fifteen soil samples collected from the rice crop in the rice-shrimp farming system of 5 different provinces within the Mekong Delta, Vietnam were used to isolate the IAA producing bacteria. NBRIP media was used to isolate the potentially IAA producing bacteria. Result showed that 213 isolates were obtained from the fifteen different soil samples. Out of 45 indole acetic acid producing isolates, ten were selected as efficient producers. One out of ten, the isolate ST2-1 was identified as the most promising strain as efficient biofertilizer inoculants to promote plant growth. This strain produced 33.13 mg.L -1 as the highest concentration of IAA after 8 days of incubation. As well, this strain stimulated the growth of rice's roots and dry biomass after 7 days of experiment with Hoagland medium containing 0.3% NaCl in 100 mL glass tube. This strain produced well IAA production in pH variation range of medium between 5 and 9 and this bacterial strain can resist to salinity of environment up to 3% NaCl. However, this bacterial was highly inhibited by not only 3 commonly used antibiotics: Ampicillin, Chloramphenicol and Steptomycin at recommended rates but also 3 plant pathology fungicides: Thiophanate Methyl, Propineb and Mancozed regarding to IAA production ability. The results of the 16S rRNA gene sequence analysis showed that this IAA producer coded as ST2-1 was genetically identified as species of Bacillus megaterium ST2-9 since 99% of its sequence affiliated with Bacillus megaterium. In conclusion, the study suggests the IAA producing bacteria as efficient biofertilizer inoculants to promote plant growth.

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Section: Nacl Concentrationmentioning

confidence: 98%

Isolation and Characterization of Indole Acetic Acid Producing Halophilic Bacteria from Salt Affected Soil of Rice–Shrimp Farming System in the Mekong Delta, Vietnam

Nghĩa¹

2017

AFF

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“…Plant growth promotion was observed with bacteria that produce moderate levels of indole acetic acid, IAA including Azospirillum sp., Alcaligenes faecalis (AF3), Klebsiella sp., Enterobacter cloacae, Acetobacter diazotrophicus, Rhizobium (Costacurta & Vanderleyden 1995). Nakbanpote et al (2013) reported salt-tolerant and plant growth-promoting bacteria isolated from Zn/Cd contaminated soil. Similarly, Vardharajula et al (2011) demonstrated the induction of drought tolerance in maize by drought-tolerant plant growth-promoting Bacillus spp.…”

Section: Introductionmentioning

confidence: 99%

Role of plant growth-promoting rhizobacteria and their exopolysaccharide in drought tolerance of maize

Naseem

Bano

2014

Journal of Plant Interactions

315

123

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The present study deals with the isolation and characterization of exopolysaccharides (EPS) produced by the plant growth-promoting rhizobacteria (PGPR) from arid and semiarid regions of Pakistan, and to investigate the drought tolerance potential of these PGPR on maize when used as bioinoculant alone and in combination with their respective EPS. Three bacterial strains Proteus penneri (Pp1), Pseudomonas aeruginosa (Pa2), and Alcaligenes faecalis (AF3) were selected as EPS-producing bacteria on the basis of mucoid colony formation. All these strains were gram negative, motile, and positive for catalase. Strain Pp1 was positive for oxidase test and was phosphate solubilizing, while Pa2 and AF3 were negative. The isolated strains were sequenced using 16SrRNA. Total soluble sugar, protein, uronic acid, emulsification activity, and Fourier-transformed infrared spectroscopy of EPS were determined. Drought stress had significant adverse effects on growth of maize seedlings. Seed bacterization of maize with EPS-producing bacterial strains in combination with their respective EPS improved soil moisture contents, plant biomass, root and shoot length, and leaf area. Under drought stress, the inoculated plants showed increase in relative water content, protein, and sugar though the proline content and the activities of antioxidant enzymes were decreased. The Pa2 strain isolated from semiarid region was most potent PGPR under drought stress. Consortia of inocula and their respective EPS showed greater potential to drought tolerance compared to PGPR inocula used alone.

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“…In another research, Nakbanpote et al (2013) addressing tolerance of bacteria to salinity and plant growth-promoting, SIF bacteria observed in 8% NaCl conditions, confirming tolerance to salinity of these microorganisms. Regarding to more expressive values for the SI (9.73) were found in this study with bacteria tolerant to salinity associated with plants of Atriplex, indicating the biotechnological potential of salt-tolerant isolated.…”

Section: Solubilization Of Inorganic Phosphatementioning

confidence: 65%

Bioprospecting and plant growth-promoting bacteria tolerant to salinity associated with Atriplex nummularia L. in saline soils

Silva¹,

Santos²,

Sousa³

et al. 2016

Afr. J. Microbiol. Res.

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This study aimed to bioprospect and select halotolerantes bacteria and promoting plant growth associated with the plant Atriplex nummularia L. in saline soils. For bioprospecting of bacteria, samples were collected in five niches and two field experiments located in Serra Talhada and Ibimirim, Pernambuco, Brazil. After collecting the material it was performed the isolation and selection of bacteria based on plant growth promotion mechanisms. 107 bacterial salt tolerant isolates were obtained in which the population density of bacteria was higher in the rhizosphere (10 7 CFU g -1 soil), the cultivated soil (10 6 CFU g -1 soil) and uncultivated soil (10 5 CFU g -1 soil). For the solubilization rate of inorganic phosphate was obtained 65 and 25% positives isolated in 0 to 5% NaCl concentration, respectively. For the characteristics of biological fixation nitrogen, indole acetic acid production, exopolysaccharides and quorum sensing molecule, reached up to 87 percent; 100; 83.33 and 96.66% of the bacteria, respectively. Therefore, the bacterial isolates UAGAt 89 and UAGAt 101 expressed greater tolerance to salinity when analyzed in relation to the characteristics that promote plant growth, making it promising for future studies in order to contribute to the development of Atriplex plants and rehabilitation of soil affected by salts.

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Salt-tolerant and plant growth-promoting bacteria isolated from Zn/Cd contaminated soil: identification and effect on rice under saline conditions

Cited by 77 publications

References 41 publications

Isolation and Characterization of Indole Acetic Acid Producing Halophilic Bacteria from Salt Affected Soil of Rice–Shrimp Farming System in the Mekong Delta, Vietnam

Isolation and Characterization of Indole Acetic Acid Producing Halophilic Bacteria from Salt Affected Soil of Rice–Shrimp Farming System in the Mekong Delta, Vietnam

Role of plant growth-promoting rhizobacteria and their exopolysaccharide in drought tolerance of maize

Bioprospecting and plant growth-promoting bacteria tolerant to salinity associated with Atriplex nummularia L. in saline soils

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