Exploring the efficacy of antagonistic rhizobacteria as native biocontrol agents against tomato plant diseases

Karthika, S.; Varghese, Siby; Jisha, M. S.

doi:10.1007/s13205-020-02306-1

Cited by 36 publications

(20 citation statements)

References 140 publications

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“…The decrement of disease severity and disease incidence in case of inoculation with PGPRs or biocontrol agent observed their role in suppressing the pathogen infection that may happen by several mechanisms. These results are in harmony with (Glic, 2012, Liu et al, 2017and Karthika et al, 2020 who reported that PGPR act, as biocontrol agents and these is considered the major indirect mechanisms of plant growth promotion by rhizobacteria and they add PGPR major modes of biocontrol activity include competition for nutrients, niche exclusion, induced systemic resistance and antifungal metabolites…”

Section: Effects On Disease Severity and Disease Incidencesupporting

confidence: 83%

Application of Some Organic Farming Methods to Enhancement The Growth and Production of Green Onion تطبيق بعض أساليب الزراعة العضوية لتعزيز نمو وإنتاج البصل الأخضر

Abdelrahman

Zaghloul

Abou-Aly

et al. 2021

Journal of Agricultural Chemistry and Biotechnology

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In vitro antagonistic effect of various PGPR namely A. chroococcum, B. megaterium, B. circulans, B. subtilis, Ps. fluorescens and T. viride against F. solani or R. solani was determined. Results observed that using all PGPR strains suppressed F. solani and R. solani. The inhibition zone increased by increasing incubation time. Under greenhouse condition, onion inoculation with investigated PGPR strains reduced disease severity of F. solani by rate ranging between (79.4-93.5%). However, they reduce disease severity of R. solani by rate ranging between (84.5-93.6%). Accordingly, the rate of disease incidence reduced by the range between (68.4-81.8%) and (65.5-81.8%) in case of infested with F. solani and R. solani respectively. Moreover, they had positive effect on plant defense enzymes, nutrients uptake and growth parameters. In farm of the Central Laboratory of Organic Agriculture, Giza station, ARC Giza, Egypt, the open field experiment was carried out to study the integrated effect of biofertilizing-PGPR and biocontrol agents with compost to improve green onion growth characteristics and yield under the organic agriculture system. During the experiment the soil microbial enzymes activity, total NPK and plant uptake, defense enzymes activity, growth characteristics and vegetative yield were estimated. Data obtained showed that onion treated with compost + biofertilizing-PGPR + B. subtilis + T. viride (T7) gave the highest values of in all estimated parameters except defense enzymes activity. So, it can be recommended as integrated fertilizing program to promote green onion growth, increase crop production, and decrease production costs.

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Section: Effects On Disease Severity and Disease Incidencesupporting

confidence: 83%

Application of Some Organic Farming Methods to Enhancement The Growth and Production of Green Onion تطبيق بعض أساليب الزراعة العضوية لتعزيز نمو وإنتاج البصل الأخضر

Abdelrahman

Zaghloul

Abou-Aly

et al. 2021

Journal of Agricultural Chemistry and Biotechnology

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“…P10 exhibited the maximum inhibition (inhibition zone 2.7±0.3 mm), P6 -2.3±0.1 mm. Endophytic bacteria, possessing PGPT along with antagonistic activity against phytopathogenic bacterium, can be considered as more forceful allies and more efficient mates of host plant, as well as seem to be more promising objects for agricultural biotechnology [24,25]. For these reasons, we have conducted biochemical and mass-spectrophotometric identification of P6 and P10 isolates.…”

Section: Resultsmentioning

confidence: 99%

Survey of plant growth promoting and antagonistic traits in winter wheat grain endophytic bacteria

Пастощук¹,

Yumyna²,

Zelena³

et al. 2021

Eureka: LS

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The aim of this work was to isolate endophytic bacteria from wheat grains and to evaluate their plant growth promoting traits (PGPT) as well as an inhibitory effect on P. syringae pv. atrofaciens (McCulloch) growth. Endophytic bacteria were isolated by a culture-dependent protocol from the grains of winter wheat variety of Ukrainian selection Podolyanka with high resistance to syringae. Totally 2.7±0.09 CFU/1 g of dry wheat grain were isolated, ten cultivable bacterial isolates were obtained. Spore-forming bacilli predominated in the wheat grain endophytic community. Gram-negative fermenting and non-fermenting rod-shaped bacteria and Gram-positive cocci were also present. Seven out of ten isolates possessed numerous plant growth promoting traits including phosphate solubilization, oligonitrotrophy, and indolic compound producing. Two isolates possessed antagoniscic activity against syringae in vitro along with plant growth promoting features. According to biochemical profiling and mass-spectrophotometric identification, these two isolates were assigned to Paenibacillus and Brevibacillus genera. These endophytic bacteria can be considered as promising objects for agrobiotechnology. However, more research is needed to confirm their biotechnological potential in planta experiments

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“…They produced enzymes such as lipases, protease, cellulases, and chitinases. These enzymes are the organic catalyst that can destroy or break down the cell walls of fungal spoilage organisms ( Karthika, Varghese & Jisha, 2020 ). The rhizobacteria actions biologically controlled the spoilage organisms, which produced these materials to inhibit their features in the tomato rhizosphere soil ( Guerrieri et al, 2020 ).…”

Section: Various Associations Occurring Between Microorganisms and To...mentioning

confidence: 99%

The application of plant growth-promoting rhizobacteria in Solanum lycopersicum production in the agricultural system: a review

Adedayo

Babalola

Prigent‐Combaret

et al. 2022

PeerJ

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Food safety is a significant challenge worldwide, from plantation to cultivation, especially for perishable products such as tomatoes. New eco-friendly strategies are needed, and beneficial microorganisms might be a sustainable solution. This study demonstrates bacteria activity in the tomato plant rhizosphere. Further, it investigates the rhizobacteria’s structure, function, and diversity in soil. Rhizobacteria that promote the growth and development of tomato plants are referred to as plant growth-promoting bacteria (PGPR). They form a series of associations with plants and other organisms in the soil through a mutualistic relationship where both parties benefit from living together. It implies the antagonistic activities of the rhizobacteria to deter pathogens from invading tomato plants through their roots. Some PGPR are regarded as biological control agents that hinder the development of spoilage organisms and can act as an alternative for agricultural chemicals that may be detrimental to the health of humans, animals, and some of the beneficial microbes in the rhizosphere soil. These bacteria also help tomato plants acquire essential nutrients like potassium (K), magnesium (Mg), phosphorus (P), and nitrogen (N). Some rhizobacteria may offer a solution to low tomato production and help tackle food insecurity and farming problems. In this review, an overview of soil-inhabiting rhizobacteria focused on improving the sustainable production of Solanum lycopersicum.

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Exploring the efficacy of antagonistic rhizobacteria as native biocontrol agents against tomato plant diseases

Cited by 36 publications

References 140 publications

Application of Some Organic Farming Methods to Enhancement The Growth and Production of Green Onion تطبيق بعض أساليب الزراعة العضوية لتعزيز نمو وإنتاج البصل الأخضر

Application of Some Organic Farming Methods to Enhancement The Growth and Production of Green Onion تطبيق بعض أساليب الزراعة العضوية لتعزيز نمو وإنتاج البصل الأخضر

Survey of plant growth promoting and antagonistic traits in winter wheat grain endophytic bacteria

The application of plant growth-promoting rhizobacteria in Solanum lycopersicum production in the agricultural system: a review

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