Effect of halotolerant plant growth-promoting rhizobacteria from Bougainvillea glabra on wheat and maize seedlings under NaCl stress

Karnwal, Arun

doi:10.5114/bta.2020.100426

Cited by 2 publications

(4 citation statements)

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“…The surface-sterilized seeds were then placed under laminar airflow for air drying, inoculated in presterilized agar plates, and incubated at 28 ± 1EC for 24 h to test the efficacy of the sterilizing agent. Finally, the colonization ability of BoGl123 was evaluated as described by Karnwal (2021).…”

Section: Colonization Abilitymentioning

confidence: 99%

“…Different NaCl concentrations were used to examine the effect of BoGl123 on the germination of seedlings, as reported by Karnwal (2021). To preserve salinity throughout the study, the surface-sterilized seeds were placed on Petri dishes containing presterilized moist filter paper (Whatman-no.…”

Section: Bacteria Seed Inoculation Under Salinity Conditions (50 100 ...mentioning

confidence: 99%

“…Bougainvillea glabra thrives in well-drained acidic soils with a pH of 5.5-6.0 (Abarca-Vargas and Petricevich, 2018;Karnwal, 2021). In contrast, wheat and maize usually grow under nonsaline/nonstress conditions, so using these cereal crops to isolate salt-tolerant bacteria may not be feasible.…”

mentioning

confidence: 99%

“…In contrast, wheat and maize usually grow under nonsaline/nonstress conditions, so using these cereal crops to isolate salt-tolerant bacteria may not be feasible. Islam et al (2016) reported that Bougainvillea species, associated with several salt-tolerant plant growth promotion (PGP) strains in the rootassociated soil, can be used for plant growth improvement under saline conditions (Abarca-Vargas and Petricevich, 2018;Karnwal, 2021). The present study aimed to culture and screen salinity-tolerant PGPRs of B. glabra rhizosphere and examine their growth-promoting activity with wheat (Triticum aestivum ) HD-2687 and maize (Zea mays ) PSCL-4642 cultivars under saline conditions at the seedling stage.…”

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confidence: 99%

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Potential of halotolerant PGPRs in growth and yield augmentation of Triticum aestivum var. HD2687 and Zea mays var. PSCL4642 cultivars under saline conditions

Karnwal¹

2022

bta

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This study aimed to culture and screen salt-tolerant Plant growth promoting rhizobacteria (PGPRs) from Bougainvillea glabra rhizosphere to improve wheat HD-2687 and maize PSCL-4642 cultivars under saline conditions up to the seedling stage. Twenty-four rhizobacterial isolates were screened for salt tolerance at different NaCl levels. Indole acetic acid (IAA) production, phosphate solubilization, and siderophore and hydrogen cyanide (HCN) production of salinity-tolerant isolates were tested. Positive salt-tolerant PGPRs were further subjected to seedling studies to examine the improvement in the development of experimental crops under 50, 100, 150, and 200 mM NaCl concentrations with/without bacterial inoculant. Of the 24 isolates, BoGl123 was the most promising PGPR, which showed the maximum phosphate solubilization, and IAA, siderophore and HCN production. It was further subjected to seedling studies. In comparison with controls, BoGl123 resulted in a higher radicle length in maize (34 mm, 87.4%) and wheat (26.8 mm, 85.8%) at the 50 mM salinity level. At the 100 mM NaCl level, the radicle length of wheat and maize seedlings was increased by 82.5% and 78.6%, respectively, compared with controls. At different NaCl concentrations, BoGl123 improved the plumule length of seedlings in both crops. The stress tolerance attributes and plant growth promotion (PGP) indicate the potential of Pseudomonas fluorescens BoGl123 to be used as a microbial inoculant in the cultivation of wheat and maize under stressful conditions.

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Section: Colonization Abilitymentioning

confidence: 99%

Section: Bacteria Seed Inoculation Under Salinity Conditions (50 100 ...mentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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