Inoculation of plant growth-promoting bacteria attenuates the negative effects of drought on sorghum

Santana, Sheilla Rios Assis; Voltolini, Tadeu Vinhas; Antunes, Gabiane dos Reis; Silva, Valterlina Moreira da; Simões, Welson Lima; Morgante, Carolina Vianna; Freitas, Ana Dolores Santiago de; Chaves, Agnaldo Rodrigues de Melo; Aidar, S. de T.; Fernandes‐Júnior, Paulo Ivan

doi:10.1007/s00203-020-01810-5

Cited by 28 publications

(23 citation statements)

References 42 publications

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“…Further, successful endophytic colonization by these strains in the roots, shoots and leaves of maize plants has been reported using rifampicin resistance marker (Bodhankar et al, 2017). Bacteria belonging to genus Bacillus and possessing multiple plant growth promoting traits have been reported to enhance drought tolerance in different crops (Vardharajula et al, 2011;Kavamura et al, 2013, Grover et al, 2014, Santana et al, 2020. In the present study, MSEB inoculated treatments (MSEB 17, MSEB 72 and MSEB 78) showed better plant growth parameters, chlorophyll, shoot length, shoot fresh biomass, shoot dry biomass and physiological parameters, proline and sugar content, soil moisture content indicating the positive effect of inoculation on plant growth under drought stress and well watered conditions.…”

Section: Effect Of Maize Seed Endophytes On Maize Plant Growth Paramementioning

confidence: 99%

The Expression of Selected Drought Responsive Genes of Maize Is Influenced by Endophytic Bacterial Inoculation

Bodhankar¹,

Grover²,

Manjunath³

et al. 2020

J microb biotech food sci

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Plants respond to abiotic stresses through a series of molecular, cellular and physiological changes. These responses are further influenced by the interactions between host plant and the associated rhizospheric and endophytic microorganisms. The endophytic microorganisms, due to their intimate proximity with the host plant, are considered to have major influence on plant’s physiological responses. In the present study, three drought tolerant and plant growth promoting maize seed endophytic bacteria, Bacillus sp. MSEB 17, Bacillus sp. MSEB 72 and Bacillus sp. MSEB 78 were used as seed inoculants in maize (var Bioseed 9681) under drought stress conditions in a growth chamber pot study and their influence on four drought responsive genes (Zmdhn1, GRMZM2G055844, GRMZM2G467339 and GRMZM2G109448) in maize leaves was studied by real time PCR using specific primers. The influence of inoculation on host plant’s response to drought was evident from altered expression of target genes when compared with uninoculated plants. Notably, inoculation with MSEB 17 increased the expression of three target genes, Zmdhn1 (dehydrin) gene, GRMZM2G467339 gene and GRMZM2G109448 gene by several folds. This study revealed the role of endophytic in alleviating the effect of drought stress in maize plants through regulating plant growth and physiological response.

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Section: Effect Of Maize Seed Endophytes On Maize Plant Growth Paramementioning

confidence: 99%

The Expression of Selected Drought Responsive Genes of Maize Is Influenced by Endophytic Bacterial Inoculation

Bodhankar¹,

Grover²,

Manjunath³

et al. 2020

J microb biotech food sci

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“…(Kavamura et al, 2013a), severe water deficit in sorghum inoculated with Bacillus sp. (Santana et al, 2020) and tolerance to high temperatures in sorghum with Pseudomonas sp. KM-P6 added (Ali et al, 2009).…”

Section: Plant Growth Promotion and Water Stress Amelioration In Maizmentioning

confidence: 99%

“…Moreover, there are studies showing the association of these microorganisms and the abiotic stress resistance exhibited by the host, including high salt concentration, high temperatures and water deficit (Mutumba et al, 2018;Albdaiwi et al, 2019;Ashraf et al, 2019, Santana et al 2020. These factors are characteristic of arid and/or semi-arid regions and may lead to the reduction and/or loss of agricultural production.…”

Section: Introductionmentioning

confidence: 99%

Cacti-associated rhizobacteria from Brazilian Caatinga biome induce maize growth promotion and alleviate abiotic stress

Santos

Morais

Miranda

et al. 2020

Agraria

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The aim of this study was to isolate and characterize the culturable rhizobacteria associated with native cacti from Caatinga biome, testing their potential in plant growth promotion and abiotic stress tolerance. Bacterial isolates were examined for plant growth promotion traits and for in vitro abiotic stress tolerance. Promising isolates were 16S rRNA sequenced, tested under greenhouse conditions for plant growth promotion and induction of water deficit tolerance in maize plants. Analysis of variance was used to assess differences among treatments and, when significant, followed by the Scott-Knott's test. The highest culturable population density was found in Melocactus zehntneri and the most promissing isolates belonged to the genus Bacillus. Under recommended conditions of irrigation, plants inoculated with the isolates CF12.2, CF8.2, and P12.2 presented an increment in root length, leaf number and root and shoot dry weight. Additionally, isolates CF6.1, CF3.1, CF8.2 and P12.2, increased shoot dry weight under water deficit conditions. In this study we identified bacterial taxa for further validation and application as biostimulants in crops grown in drylands.

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“…Inoculation with PGPB has been studied in maize (Zea mays) [13]; [14], sorghum (Sorghum vulgare) [15], wheat (Triticum aestivum) [16], sugar cane (Saccharum officinarum) [17], soy (Glycine max) [18], beans (Phaseolus vulgaris) [19] and recently in forage plants [20]; [21], this technique can be used as a strategy to increase plant productivity [22]. The partial replacement of nitrogen fertilizers by inoculants containing Azospirillum can reduce CO2 emissions [23].…”

Section: Introductionmentioning

confidence: 99%

Inoculation with plant growth-promoting bacteria and reduction of nitrogen fertilizer in herbage accumulation and nutritional value of Mavuno grass

Duarte

Filho

et al. 2021

Int J Innov Educ Res

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Strategies that improve the use of nitrogen (N), by tropical forage grasses, can bring environmental and social gains. Thus, this study aimed to evaluate the forage productivity and the nutritional value (NV) of the hybrid Urochloa spp. cv. ´Mavuno`, under inoculation with plant growth-promoting bacteria (PGPB) and doses of N. The experiment was carried out in the field, for a period of 14 months, in a randomized block design, with nine treatments and four replications in plots of 9 m². Seed inoculations were tested with: Azospirillum brasilense Ab-V5 and Ab-V6 strains; Pseudomonas fluorescens CCTB 03 and co-inoculation with Rhizobium tropici CIAT 899 and A. brasilense Ab-V6, combined with 50 and 100 kg ha-1 of added mineral N; fertilization with N-mineral with these doses, without inoculation and the control treatment, without N and without inoculation. The bacteria were inoculated to the grass seeds. The forage was evaluated by determining the shoot dry weight yield (SDWY) and the levels of crude protein (CP), neutral detergent insoluble fiber (NDF), acid detergent insoluble fiber (ADF) and in vitro dry matter digestibility (IVDMD). The results were subjected to analysis of variance by the F test (p ≤ 0.05) and compared to each other by the Scott-Knott test at 5% probability. Inoculation with PGPB resulted in greater SDWY when associated with a dose of 50 kg ha-1 of N. In plants inoculated with A. brasilense Ab-V5 + Ab-V6 and P. fluorescens CCTB 03, associated with a dose of 50 kg ha-1 of N-mineral, SDWY was similar to that obtained with double the dose of N in the absence of inoculation. The inoculation with PGPB resulted in an increase in the NV of Mavuno grass, with emphasis on A. brasilense Ab-V5 + Ab-V6 and P. fluorescens CCTB 03, associated with the dose of 100 kg ha-1 of N-mineral that improved the nutritional value in all evaluated items. The inoculation with A. brasilense Ab-V5 + Ab-V6 was the most promising, followed by P. fluorescens CCTB 03, mainly in association with 50 kg ha-1 of N.

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Inoculation of plant growth-promoting bacteria attenuates the negative effects of drought on sorghum

Cited by 28 publications

References 42 publications

The Expression of Selected Drought Responsive Genes of Maize Is Influenced by Endophytic Bacterial Inoculation

The Expression of Selected Drought Responsive Genes of Maize Is Influenced by Endophytic Bacterial Inoculation

Cacti-associated rhizobacteria from Brazilian Caatinga biome induce maize growth promotion and alleviate abiotic stress

Inoculation with plant growth-promoting bacteria and reduction of nitrogen fertilizer in herbage accumulation and nutritional value of Mavuno grass

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