Plant growth promotion by Azospirillum sp. in sugarcane is influenced by genotype and drought stress

2010 ◽  
Vol 337 (1-2) ◽  
pp. 233-242 ◽  
Author(s):  
Jean-Francois Yvan Moutia ◽  
Salem Saumtally ◽  
Stijn Spaepen ◽  
Jos Vanderleyden
Keyword(s):  
Drought Stress ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion

Alleviation of Drought Stress and Plant Growth Promotion by Pseudomonas libanensis EU-LWNA-33, a Drought-Adaptive Phosphorus-Solubilizing Bacterium

2019 ◽  
Vol 90 (4) ◽  
pp. 785-795 ◽  
Author(s):  
Divjot Kour ◽  
Kusam Lata Rana ◽  
Imran Sheikh ◽  
Vinod Kumar ◽  
Ajar Nath Yadav ◽  
...  
Keyword(s):  
Drought Stress ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion

Endophytes from maize with plant growth promotion and biocontrol activity under drought stress

2017 ◽  
Vol 43 (1) ◽  
pp. 22-34 ◽  
Author(s):  
V. Sandhya ◽  
M. Shrivastava ◽  
Sk. Z. Ali ◽  
V. Sai Shiva Krishna Prasad
Keyword(s):  
Drought Stress ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Biocontrol Activity

scholarly journals Screening of Rhizobacteria for Plant Growth Promotion and Their Tolerance to Drought Stress

2013 ◽  
Vol 7 (3) ◽  
pp. 94-104 ◽  
Author(s):  
RAHAYU FITRIANI WANGSA PUTRIE ◽  
ARIS TRI WAHYUDI ◽  
ABDJAD ASIH NAWANGSIH ◽  
EDI HUSEN
Keyword(s):  
Drought Stress ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion

scholarly journals Potential Screening of Indigenous Drought Stress Tolerant Bacteria for Plant Growth Promotion (PGP) Traits: An In-vitro Study

2021 ◽  
pp. 8-21
Author(s):  
B. Prasanna Kumar ◽  
N. Trimurtulu ◽  
A. Vijaya Gopal
Keyword(s):  
Polyethylene Glycol ◽  
Drought Stress ◽  
Plant Growth ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Moisture Stress ◽  
Bacterial Isolates ◽  
Biochemical Tests ◽  
Polyethylene Glycol 6000

Aims: The study aims to formulate relevant microbial consortia against drought stress mitigation with potential drought stress tolerant bacterial isolates by polyethylene glycol 6000 (PEG 6000) different moisture stress levels to mitigate the drought stress which can finally helpful to increase plant and soil health under adverse stress conditions. Study Design:  Source of rhizosphere soil samples from groundnut drought prone areas of Andhra Pradesh. Place and Duration of Study: Department of Agricultural Microbiology, Advanced Post Graduate Centre, Acharya N.G Ranga Agricultural University, Lam, Guntur, 522 034, between June 2017 and July 2020. Methodology: Isolated strains were also tested for further drought stress screening by polyethylene glycol 6000 In-vitro screening was done for different plant growth promotion activities i.e. phosphate solubilization, IAA production, ammonia production, ACC deaminase activity, HCN production and catalase. HCN production, catalase positive, colony morphology, Gram staining and biochemical tests. Results: Fifty-one efficient bacterial isolates were obtained from drought prone rhizosphere soils of groundnut. Isolated strains were also tested for further drought stress screening by polyethylene glycol 6000 at 0% (-0.05 MPa), 10% (-0.65 MPa), 20% (-1.57 MPa), 30% (-2.17 MPa) and 40% (-2.70 MPa). Thirty-seven bacterial isolates were further found to have an enzyme 1-aminocyclopropane-1-carboxylate (ACC) deaminase activity which improved plant growth during stress conditions. The In-vitro screening was done for different plant growth promotion activities, twelve bacterial isolates were positive for phosphate solubilization. IAA production was shown by almost all the bacterial isolates. Three isolates were positive for ammonia production. Two isolates were positive for HCN production and all the isolates were found to be catalase positive. Seven isolates were showing maximum plant growth promotion activities and further identified based on colony morphology, Gram staining and biochemical tests. Conclusion: This study suggests that 51 bacterial isolates exhibited the highest tolerance to moisture stress under In-vitro, these are screened and considered as potential isolates against plant growth promoting characteristics. Plant growth promoting bacteria that can modulate physiological response for water shortage, enhanced water or nutrient uptake and transpiration, induction of plant growth hormone signaling and increased antioxidase activity and photosynthetic rate thereby ensuring plant survival under such stressful conditions. In regard to isolates having PGP properties from the research work presented could be studied further under In-vitro and in vivo conditions from different soils with several crops for confirming their use as bio inoculants.

scholarly journals Genome Mining and Evaluation of the Biocontrol Potential of Pseudomonas fluorescens BRZ63, a New Endophyte of Oilseed Rape (Brassica napus L.) against Fungal Pathogens

2020 ◽  
Vol 21 (22) ◽  
pp. 8740
Author(s):  
Daria Chlebek ◽  
Artur Pinski ◽  
Joanna Żur ◽  
Justyna Michalska ◽  
Katarzyna Hupert-Kocurek
Keyword(s):  
Brassica Napus ◽  
Plant Growth ◽  
Pseudomonas Fluorescens ◽  
Oilseed Rape ◽  
Plant Growth Promotion ◽  
Fungal Pathogens ◽  
Growth Promotion ◽  
Genome Mining ◽  
Plant Colonization ◽  
Brassica Napus L

Endophytic bacteria hold tremendous potential for use as biocontrol agents. Our study aimed to investigate the biocontrol activity of Pseudomonas fluorescens BRZ63, a new endophyte of oilseed rape (Brassica napus L.) against Rhizoctonia solani W70, Colletotrichum dematium K, Sclerotinia sclerotiorum K2291, and Fusarium avenaceum. In addition, features crucial for biocontrol, plant growth promotion, and colonization were assessed and linked with the genome sequences. The in vitro tests showed that BRZ63 significantly inhibited the mycelium growth of all tested pathogens and stimulated germination and growth of oilseed rape seedlings treated with fungal pathogens. The BRZ63 strain can benefit plants by producing biosurfactants, siderophores, indole-3-acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and ammonia as well as phosphate solubilization. The abilities of exopolysaccharide production, autoaggregation, and biofilm formation additionally underline its potential to plant colonization and hence biocontrol. The effective colonization properties of the BRZ63 strain were confirmed by microscopy observations of EGFP-expressing cells colonizing the root surface and epidermal cells of Arabidopsis thaliana Col-0. Genome mining identified many genes related to the biocontrol process, such as transporters, siderophores, and other secondary metabolites. All analyses revealed that the BRZ63 strain is an excellent endophytic candidate for biocontrol of various plant pathogens and plant growth promotion.

scholarly journals Streptomyces consortia-mediated plant defense against Fusarium wilt and plant growth-promotion in chickpea

2021 ◽  
pp. 104961
Author(s):  
Sravani Ankati ◽  
Vadlamudi Srinivas ◽  
Sambangi Pratyusha ◽  
Subramaniam Gopalakrishnan
Keyword(s):  
Plant Growth ◽  
Plant Defense ◽  
Fusarium Wilt ◽  
Plant Growth Promotion ◽  
Growth Promotion

The Enhancement of Antiviral Activity of Chloroinconazide by Aglinate-based Nanogel and Its Plant Growth Promotion Effect

2021 ◽  
Author(s):  
Xing Lv ◽  
Mengting Yuan ◽  
Yuehong Pei ◽  
Changyun Liu ◽  
Xiangchuan Wang ◽  
...  
Keyword(s):  
Plant Growth ◽  
Antiviral Activity ◽  
Plant Growth Promotion ◽  
Growth Promotion ◽  
Promotion Effect

scholarly journals Effect of Co-Inoculation of Bacillus sp. Strain with Bacterial Endophytes on Plant Growth and Colonization in Tomato Plant (Solanum lycopersicum)

2021 ◽  
Vol 12 (2) ◽  
pp. 480-490
Author(s):  
Ahsanul Salehin ◽  
Ramesh Raj Puri ◽  
Md Hafizur Rahman Hafiz ◽  
Kazuhito Itoh
Keyword(s):  
Plant Growth ◽  
Solanum Lycopersicum ◽  
Plant Growth Promotion ◽  
Tomato Plant ◽  
Growth Promotion ◽  
Growth Parameters ◽  
The Other ◽  
Time Interval ◽  
Bacillus Sp ◽  
F 33

Colonization of a biofertilizer Bacillus sp. OYK strain, which was isolated from a soil, was compared with three rhizospheric and endophytic Bacillus sp. strains to evaluate the colonization potential of the Bacillus sp. strains with a different origin. Surface-sterilized seeds of tomato (Solanum lycopersicum L. cv. Chika) were sown in the sterilized vermiculite, and four Bacillus sp. strains were each inoculated onto the seed zone. After cultivation in a phytotron, plant growth parameters and populations of the inoculants in the root, shoot, and rhizosphere were determined. In addition, effects of co-inoculation and time interval inoculation of Bacillus sp. F-33 with the other endophytes were examined. All Bacillus sp. strains promoted plant growth except for Bacillus sp. RF-37, and populations of the rhizospheric and endophytic Bacillus sp. strains were 1.4–2.8 orders higher in the tomato plant than that of Bacillus sp. OYK. The plant growth promotion by Bacillus sp. F-33 was reduced by co-inoculation with the other endophytic strains: Klebsiella sp. Sal 1, Enterobacter sp. Sal 3, and Herbaspirillum sp. Sal 6., though the population of Bacillus sp. F-33 maintained or slightly decreased. When Klebsiella sp. Sal 1 was inoculated after Bacillus sp. F-33, the plant growth-promoting effects by Bacillus sp. F-33 were reduced without a reduction of its population, while when Bacillus sp. F-33 was inoculated after Klebsiella sp. Sal 1, the effects were increased in spite of the reduction of its population. Klebsiella sp. Sal 1 colonized dominantly under both conditions. The higher population of rhizospheric and endophytic Bacillus sp. in the plant suggests the importance of the origin of the strains for their colonization. The plant growth promotion and colonization potentials were independently affected by the co-existing microorganisms.

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