Application of Plant Growth Promoting Bacillus thuringiensis as Biofertilizer on Abelmoschus esculentus Plants under Field Condition

Bandopadhyay, Sandip

doi:10.22207/jpam.14.2.24

Cited by 20 publications

(15 citation statements)

References 21 publications

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“…It has been reported that Acinetobacter calcoaceticus displays IAA and siderophore production that promotes wheat plant growth, with antagonistic activity to different phytopathogens such as Fusarium oxysporum , Aspergillus flavus and A. niger ( Sarode Prashant et al, 2009 ). Bacillus thuringiensis isolate has also been reported to promote growth in Abelmoschus esculentus plants by phosphate solubilization ( Bandopadhyay, 2020 ). In our study, all five bacteria were capable of forming biofilms.…”

Section: Discussionmentioning

confidence: 99%

Rhizospheric bacteria as potential biocontrol agents against Fusarium wilt and crown and root rot diseases in tomato

Khalil

Fierro-Coronado

Peñuelas-Rubio

et al. 2021

Saudi Journal of Biological Sciences

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The discovery of novel biocontrol agents requires the continuous scrutiny of native microorganisms to ensure that they will be useful on a regional scale. The goal of the present work was to discover novel antagonistic bacteria against Fusarium oxysporum ff. spp. lycopersici race 3 ( Fol R3) and radicis-lycopersici ( Forl ) causing Fusarium wilt disease and Fusarium crown and root rot of tomatoes, respectively. High-throughput liquid antagonism screening of 1,875 rhizospheric bacterial strains followed by dual confrontation assays in 96-well plates was used to select bacteria exhibiting > 50% fungal growth inhibition. In a second dual confrontation assay in 10-cm Petri dishes, bacteria showing > 20% Fol R3 or Forl growth inhibition were further screened using a blood hemolysis test. After discarding β-hemolytic bacteria, a seedling antagonistic assay was performed to select five potential antagonists. A phylogenetic analysis of 16S rRNA identified one strain as Acinetobacter calcoaceticus ( Ac DB3) and four strains as members of the genus Bacillus ( B. amyloliquefaciens Ba MA26, Bacillus siamensis Bsi DA2, B. subtilis Bs TA16 and B. thuringiensis Bt MB9). Greenhouse assays demonstrated that Bs TA16 and Ac DB3 were the most promising antagonists against Fol R3 and Forl , respectively. Pathogen biocontrol and growth promotion mechanisms used by these bacteria include the production of siderophores, biofilm, proteases, endoglucanases and indole acetic acid, and phosphate solubilization. These five bacteria exerted differential responses on pathogen control depending on the tomato hybrid, and on the growth stage of tomatoes. We report for the first time the use of an Acinetobacter calcoaceticus isolate ( Ac DB3) to control Forl in tomato under greenhouse conditions.

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Section: Discussionmentioning

confidence: 99%

Rhizospheric bacteria as potential biocontrol agents against Fusarium wilt and crown and root rot diseases in tomato

Khalil

Fierro-Coronado

Peñuelas-Rubio

et al. 2021

Saudi Journal of Biological Sciences

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“…Among the most potential PGPR that can function as biofertilizers due to phytohormone production are Azospirillum (e.g., Coniglio et al, 2019) and Bacillus spp. (Kang et al, 2019;Bandopadhyay, 2020), and many others. Owing to the importance of phytostimulation, such PGPR are viable candidates for PGP as biofertilizers, especially if they can also solubilize plant nutrients and/or fix N to improve plant nutrition.…”

Section: Phytostimulatorsmentioning

confidence: 97%

Plant growth-promoting rhizobacterial biofertilizers for crop production: The past, present, and future

et al. 2022

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Recent decades have witnessed increased agricultural production to match the global demand for food fueled by population increase. Conventional agricultural practices are heavily reliant on artificial fertilizers that have numerous human and environmental health effects. Cognizant of this, sustainability researchers and environmentalists have increased their focus on other crop fertilization mechanisms. Biofertilizers are microbial formulations constituted of indigenous plant growth-promoting rhizobacteria (PGPR) that directly or indirectly promote plant growth through the solubilization of soil nutrients, and the production of plant growth-stimulating hormones and iron-sequestering metabolites called siderophores. Biofertilizers have continually been studied, recommended, and even successfully adopted for the production of many crops in the world. These microbial products hold massive potential as sustainable crop production tools, especially in the wake of climate change that is partly fueled by artificial fertilizers. Despite the growing interest in the technology, its full potential has not yet been achieved and utilization still seems to be in infancy. There is a need to shed light on the past, current, and future prospects of biofertilizers to increase their understanding and utility. This review evaluates the history of PGPR biofertilizers, assesses their present utilization, and critically advocates their future in sustainable crop production. It, therefore, updates our understanding of the evolution of PGPR biofertilizers in crop production. Such information can facilitate the evaluation of their potential and ultimately pave the way for increased exploitation.

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“…To date few reports have been published about the successful use of Bt as a in field conditions 16,42,59,[82][83][84] . Sorokan et al, 2020 42 evaluate the efficiency of potatoes colonized with Bt in the control of L. decemlineata and potato viruses (Potato virus Y (PVY), Potato virus M (PVM), and Potato virus S (PVS)) in two different growth seasons.…”

Section: Effectiveness Of the Application Of Bacillus Thuringiensisor...mentioning

confidence: 99%

<i>Bacillus Thuringiensis</i> as a Biofertilizer in Crops and Their Implications in the Control of Phytopathogens and Insect Pests <strong> </strong>

Gomis-Cebolla¹,

Berry²

2022

Preprint

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Bacillus thuringiensis (Bt) is a spore-forming bacterium that produces insecticidal proteins and other virulence factors and is considered one of the most successful bioinsecticides available to control pests in agriculture. Bt strains have been reported as endophyte or rhizospheric bacteria, but little is known about the implications of this property of Bt in crop protection. Here, we review if Bt can establish as an endophyte/rhizobacterium and evaluate if Bt as an endophyte/rhizobacterium can simultaneously act against different phytopathogens (fungi, bacteria, insects and viruses) plus promote plant growth. The implications of the proposed review will broaden our understanding of Bt as a versatile entomopathogen by exhibiting differential behavior depending on context.

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Application of Plant Growth Promoting Bacillus thuringiensis as Biofertilizer on Abelmoschus esculentus Plants under Field Condition

Cited by 20 publications

References 21 publications

Rhizospheric bacteria as potential biocontrol agents against Fusarium wilt and crown and root rot diseases in tomato

Rhizospheric bacteria as potential biocontrol agents against Fusarium wilt and crown and root rot diseases in tomato

Plant growth-promoting rhizobacterial biofertilizers for crop production: The past, present, and future

<i>Bacillus Thuringiensis</i> as a Biofertilizer in Crops and Their Implications in the Control of Phytopathogens and Insect Pests <strong> </strong>

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