Combined Application of Different Species of Trichoderma and Pseudomonas fluorescens on the Cellulolytic Enzymes of Fusarium Oxysporum for the Control of Fusarium wiltDisease in Arachis hypogea. L

Rajeswari, P.; Kapoor, Rupam

doi:10.13005/bbra/2557

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…The endoglucanases and proteases produced by Pantoea, Mitsuaria, and Enterobacter, studied here, were reported previously (Das et al, 2017;Fan et al, 2016). These enzymes degrade the fungi cell wall, decreasing their populations in the soil and damaging effects on the plant (Jayasekara & Ratnayake, 2019;Rajeswari & Kapoor, 2017).…”

Section: Discussionmentioning

confidence: 59%

New bacteria genera associated with rice (Oryza sativa L.) in Cuba promote the crop growth

et al. 2022

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Introduction. The rice cultivar INCA LP-7 is one of the eleven principal cultivars in Cuba due to their high yield potential, salinity tolerance, and pathogens resistance. However, there are not reports about the isolation, identification, and characterization of bacteria associated to this cultivar that promote its growth. Objective. To select promising bacteria from the rhizosphere of the INCA LP-7 rice cultivar to promote the crop growth. Materials and methods. The investigation was carried out in 2015 and 2016 at the Instituto Nacional de Ciencias Agropecuarias, Cuba and Instituto de Investigaciones Biologicas Clemente Estable, Uruguay. The 16SrNA gene of bacteria associated with the INCA LP-7 rice cultivar was isolated and identified by sequencing. Characterization was performed as plant growth promoting bacteria and the effect of bacterial inoculation on rice growth was studied. Results. Eleven rizopheric bacteria were isolated from rice plants of the INCA LP-7cultivar. A phylogenetic analysis showed that for the first time in Cuba Pantoea, Acinetobacter, and Mitsuaria genera were reported associated with rice. Rhizobium and Enterobacter genera were also informed as rhizospheric bacteria of INCA LP-7 rice cultivar. Some isolates solubilize inorganic phosphates and potassium, produce siderophores and indolic compound, had exo-celulase and protease activity and formed biofilm. The inoculation of isolates belonging to Pantoea genus produced an increase in height, root length, and biomass of rice plants under greenhouse conditions. Conclusions. Pantoea sp. GG1 and Pantoea sp. GG2 were the most promising strains for the inoculation of the INCA LP-7 rice cultivar. This is the first report in Cuba that focuses on the characterization of the bacterial microbiota part associated to Cuban rice cultivar INCA LP-7 and reports bacteria of the Pantoea genus as crop growth promoters.

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Section: Discussionmentioning

confidence: 59%

New bacteria genera associated with rice (Oryza sativa L.) in Cuba promote the crop growth

et al. 2022

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“…Between 55 and 85% of peanut root rot ( Chen et al, 2022 ) is caused by a series of pathogenic microorganisms, including Aspergillus niger ( Sharma et al, 2012 ), A. flavus ( Zhao et al, 2019 ), Sclerotinia spp. ( Rajeswari and Kapoor, 2017 ), and Fusarium spp. ( Sun et al, 2020 ).…”

Section: Introductionmentioning

confidence: 99%

Study on the mechanism of peanut resistance to Fusarium oxysporum infection induced by Bacillus thuringiensis TG5

Du,

2024

Front. Microbiol.

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Peanut root rot, commonly referred to as rat tail or root rot, is caused by a range of Fusarium species. A strain of bacteria (named TG5) was isolated from crop rhizosphere soil in Mount Taishan, Shandong Province, China, through whole genome sequencing that TG5 was identified as Bacillus thuringiensis, which can specifically produce chloramphenicol, bacitracin, clarithromycin, lichen VK21A1 and bacitracin, with good biological control potential. Based on liquid chromatography tandem mass spectrometry metabonomics analysis and transcriptome conjoint analysis, the mechanism of TG5 and carbendazim inducing peanut plants to resist F. oxysporum stress was studied. In general, for peanut root rot caused by F. oxysporum, B. thuringiensis TG5 has greater advantages than carbendazim and is environmentally friendly. These findings provide new insights for peanut crop genetics and breeding, and for microbial pesticides to replace traditional highly toxic and highly polluting chemical pesticides. Based on the current background of agricultural green cycle and sustainable development, it has significant practical significance and broad application prospects.

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“…Talaviya and Jadega (2015) reported that combined application of T. viride+ T. harzianum+ Pseudomonas fluorescens was significantly effective in controlling cumin wilt disease and improves higher yield. Rajeswari and Kapoor (2017) DNA estimation: In DNA estimation, the method of Burton (1956) was used. To 1.5 ml of PCA extract, 3ml of diphenylamine reagent was added.…”

Section: Introductionmentioning

confidence: 99%

Combination of Trichoderma viride and Pseudomonas fluorescens for the enhanced control of Fusarium wilt disease caused by Fusarium oxysporum infecting Arachis hypogaea L.

Rajeswari

2019

JANS

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Fusarium wilt caused by Fusarium oxysporum is a devastating disease of peanut. The fungus causes severe yield loss in groundnut. Combinations of biocontrol agents that are compatible with each other is a viable approach to control the plant disease. The study was conducted to determine the beneficiary aspects of combining different species of Trichoderma and Pseudomonasfluorescens i.e Trichoderma viride+Pseudomonas fluorescens (Tv+Pf), Trichoderma harzianum+Pseudomonas fluorescens (Th+Pf) and Trichoderma viride +Trichoderma harzianum (Tv+Th) to control the Fusarium wilt in biochemicalparameters such as DNA, RNA, Amino nitrogen, phenols, dihydroxy and proline contents of Arachis hypogaea.L. Among the three combinations tested, Trichoderma viride + Pseudomonas fluorescens (1+2%) sprayed leaves provided greater suppression of Fusariumoxysporum by increasing the levels of DNA,RNA,Amino nitrogen contents resulting in the suppression of Fusarium wilt disease of Arachis hypogaea L.Maximum reduction of DNA, RNA, Amino nitrogen was observed in the infected Fusariumoxysporumleaves Phenol, Dihydroxy phenols and proline contents increase sharply in the treated plants treated with (Tv+Pf) as compared to the control plants. At the same time the other two combinations resulted in enhanced control in comparison with individual ones. This present study indicates that specific combination of Trichoderma viride and Pseudomonas fluorescens could have the greater efficacy in the inhibition of pathogen in the biocontrol of Fusarium wilt disease as compared with individual strains.

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Combined Application of Different Species of Trichoderma and Pseudomonas fluorescens on the Cellulolytic Enzymes of Fusarium Oxysporum for the Control of Fusarium wiltDisease in Arachis hypogea. L

Cited by 4 publications

References 25 publications

New bacteria genera associated with rice (Oryza sativa L.) in Cuba promote the crop growth

New bacteria genera associated with rice (Oryza sativa L.) in Cuba promote the crop growth

Study on the mechanism of peanut resistance to Fusarium oxysporum infection induced by Bacillus thuringiensis TG5

Combination of Trichoderma viride and Pseudomonas fluorescens for the enhanced control of Fusarium wilt disease caused by Fusarium oxysporum infecting Arachis hypogaea L.

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