Characterization of the endophytic bacteria from in vitro cultures of Dendrocalamus asper and Bambusa oldhamii and assessment of their potential effects in in vitro co-cultivated plants of Guadua chacoensis (Bambusoideae, Poaceae)

Belincanta, Cristina; Botelho, Gloria Regina; Ornellas, Thiago Sanches; Zappelini, Julia; Guerra, Miguel Pedro

doi:10.1007/s11627-021-10204-1

Cited by 1 publication

(1 citation statement)

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“…Moreover, they produce biologically active compounds such as siderophores, indole-3-acetic acid (IAA), antifungal metabolites and a variety of defense enzymes like peroxidase and chitinase (9)(10)(11). Biotization is also an important area of research in this regard for using microorganisms as co-culture to improve the yield of crops (12).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Bacillus and Rhizobium Strains to Enhance the Growth of Vigna radiata (L.) under Drought Stress

Tanveer

Ali

2022

Pak Euro. J. Med & LS

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In the present study, strains of Bacillus and Rhizobium were evaluated for their efficacy to produce auxin and to enhance the growth of Vigna radiata (L.) under drought stress. Colorimetric analysis indicated the production of auxin in bacterial culture supernatants in the presence of 0, 200, and 500 µg ml-1 L-tryptophan. At 500 µg ml-1 of L-tryptophan, B. subtilis Z-24, and B. simplex Z-38 produced significant levels of 41.4 and 24.8 µg ml-1 auxin, respectively. High Performance Liquid Chromatography (HPLC) also detected the auxin production by bacterial strains. In vitro rooting assay also recorded maximum increase in number of lateral roots with B. simplex Z-02, over control. For pot trials, seeds treated with single and mixed bacterial cultures were grown under 28%, 20%, and 10% field capacities (FC) of loamy soils. At 28% FC (normal water level), maximum increase of 28% dry weight was observed for R. rosettiformans Z-30; as compared to respective control. At 10% FC (highest water stress), significant increases of 87% and 70% in fresh weight and root length were recorded by B. cereus Z-59 and B. simplex Z-37, respectively. In case of mixed culture, C-3 (Z-38, Z-20, and Z- 30) and C-2 (Z-59, Z-20, and Z-23) were the most effective to enhance up to 68% dry weight and 13% shoot length of plants under drought stress (10% FC). Results showed that Bacillus and Rhizobium strains have the potential to produce auxin and improved the growth of mung beans under drought stressed conditions.

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