Biochemical basis of genotypic and bio-agent induced stem rot resistance in groundnut

Rajyaguru, Riddhi; Thirumalaisamy, P. P.; Patel, Kirankumar G.; Thumar, Jignasha T.

doi:10.18805/lr.v40i04.9004

Cited by 4 publications

(4 citation statements)

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“…Song et al (2013) also reported that lipopeptides produced by B. amyloliquefaciens anti-CA (Candida albicans) limit fungal growth of C. albicans. Bacillus amyloliquefaciens isolated from groundnut rhizosphere enhances the activities of defense enzymes through salicylic acid induced systemic resistance and several enzymes such as chitinase, peroxidase, catalase and polyphenol oxidase have strong negative correlation with disease severity index (Rajyaguru et al, 2017). Two antagonistic bacterial strains of Bacillus sp.…”

Section: Resultsmentioning

confidence: 99%

Biological Control of Gummy Stem Blight Caused by Didymella bryoniae (Auersw.) on Watermelon by Bacillus sp. Strains

Tran,

Ngo,

Tran

2024

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Background: The gummy stem blight caused by the fungal pathogen Didymella bryoniae (Auersw.) is a common and serious disease of watermelon plants in Vietnam. Bacillus species have been used to control plant diseases as biological control agents. The objectives of this studies were to determine the fungal inhibition of D. bryoniae and disease suppression of gummy stem blight under greenhouse by Bacillus sp. strains. Methods: The study was carried out at University of Agriculture and Forestry, Hue University during 2022-2023. Six potential Bacillus strains namely S1A1, S1F3, S13E2, S13E3, S18F11 and S20D12 isolated from stem-base of groundnut in central Vietnam were tested its fungal inhibition of D. bryoniae and disease suppression of gummy stem blight. Result: All tested strains of Bacillus sp. showed inhibition of the hyphal growth of D. bryoniae strain DB-01 in potato dextrose broth. Among the strains, Bacillus sp. S20F12 had highest inhibition of the growth of mycelia of D. bryoniae strain DB-01 with an antagonistic efficiency of 65.7% at 10 days after fungal inoculation. By 21 days after fungal inoculation, disease incidences were low in the plants treated with Bacillus sp. S20D12 and S1F3 by 46.6 and 50.0% and disease severity by 15,3% and 20.6%, respectively. As results, watermelon plants were prevented from damage of gummy stem blight caused by D. bryoniae strain BD-01 by Bacillus sp. S20D12 and S1F13. The results would contribute to the knowledge of antagonistic activities of the Bacillus to optimize the biological control against D. bryoniae.

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Section: Resultsmentioning

confidence: 99%

Biological Control of Gummy Stem Blight Caused by Didymella bryoniae (Auersw.) on Watermelon by Bacillus sp. Strains

Tran,

Ngo,

Tran

2024

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“…Salicylic acid induced systemic resistance to enhance the activity of the defense enzymes. Enzymes catalase, peroxidase, polyphenol oxidase and chitinase showed strong negative correlation with disease severity index [ 37 ]. Therefore, we use bio-pesticides to improve the enzyme activity of crops to reduce the severity of crop diseases.…”

Section: Discussionmentioning

confidence: 99%

Interactive Effect of Biological Agents Chitosan, Lentinan and Ningnanmycin on Papaya Ringspot Virus Resistance in Papaya (Carica papaya L.)

Fan

Yan

et al. 2022

Molecules

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The papaya industry is mainly impacted by viral diseases, especially papaya ringspot disease (PRSD) caused by papaya ringspot virus (PRSV). So far, research on the interaction between Chitosan, Lentinan and Ningnanmycin on PRSD has not been reported. This research studied the controlled and interactive effect of three biological agents, namely, Chitosan (C), Lentinan (L) and Ningnanmycin (N), on PRSV in papaya, individually and collectively. The changes in disease index, controlled effect, Peroxidase (POD), Polyphenol oxidase (PPO), Superoxide dismutase (SOD), growth and development of plants were observed at the seedling stage, in pots, and at the fruiting stage, in the field. The appearance and nutrient contents of fruits were measured during the fruit stage. The disease index of PRSV, at seedling and fruiting stages, was significantly lower for chitosan, lentinan and ningnanmycin and their interactive effect, compared to a control check treatment. The activity of the defense enzymes could be improved by the three kinds of biological agents and their interactive effect, especially lentinan and ningnanmycin. The chlorophyll content, plant height, stem diameter and fruit quality rose significantly under chitosan, lentinan and ningnanmycin treatments. The interaction of LN could inhibit PRSV disease at the seedling and fruiting stages of papaya, and promote the growth of plants and the quality of fruit at the fruit stage. Hence, this study provides the theoretical foundation for the biological control of papaya ringspot disease.

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“…Similarly, the OD values for Polyphenol oxidase enzyme assay were measured by taking 2900 µl of 0.1 M catechol in the 10 mM phosphate buffer of pH 6.0, 100 µl milli-Q and enzyme supernatant in the quartz cuvette at 490 nm for one min, at intervals of 15 s in the spectrophotometer. The OD value for a similarly treated control sample (blank without enzyme supernatant) was deducted from test readings [ 27 ].…”

Section: Methodsmentioning

confidence: 99%

Metabolic profiles of peanut (Arachis hypogaea L.) in response to Puccinia arachidis fungal infection

Rathod,

Tomar

et al. 2023

BMC Genomics

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Background Puccinia arachidis fungus causes rust disease in the peanut plants (Arachis hypogaea L.), which leads to high yield loss. Metabolomic profiling of Arachis hypogaea was performed to identify the pathogen-induced production of metabolites involved in the defense mechanism of peanut plants. In this study, two peanut genotypes, one susceptible (JL-24) and one resistant (GPBD-4) were inoculated with Puccinia arachidis fungal pathogen. The metabolic response was assessed at the control stage (0 day without inoculation), 2 DAI (Day after inoculation), 4 DAI and 6 DAI by Gas Chromatography-Mass Spectrometry (GC-MS). Results About 61 metabolites were identified by NIST library, comprising sugars, phenols, fatty acids, carboxylic acids and sugar alcohols. Sugars and fatty acids were predominant in leaf extracts compared to other metabolites. Concentration of different metabolites such as salicylic acid, mannitol, flavonoid, 9,12-octadecadienoic acid, linolenic acid and glucopyranoside were higher in resistant genotype than in susceptible genotype during infection. Systemic acquired resistance (SAR) and hypersensitive reaction (HR) components such as oxalic acid was elevated in resistant genotype during pathogen infection. Partial least square-discriminant analysis (PLS-DA) was applied to GC-MS data for revealing metabolites profile between resistant and susceptible genotype during infection. Conclusion The phenol content and oxidative enzyme activity i.e. catalase, peroxidase and polyphenol oxidase were found to be very high at 4 DAI in resistant genotype (p-value < 0.01). This metabolic approach provides information about bioactive plant metabolites and their application in crop protection and marker-assisted plant breeding.

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Biochemical basis of genotypic and bio-agent induced stem rot resistance in groundnut

Cited by 4 publications

References 0 publications

Biological Control of Gummy Stem Blight Caused by Didymella bryoniae (Auersw.) on Watermelon by Bacillus sp. Strains

Biological Control of Gummy Stem Blight Caused by Didymella bryoniae (Auersw.) on Watermelon by Bacillus sp. Strains

Interactive Effect of Biological Agents Chitosan, Lentinan and Ningnanmycin on Papaya Ringspot Virus Resistance in Papaya (Carica papaya L.)

Metabolic profiles of peanut (Arachis hypogaea L.) in response to Puccinia arachidis fungal infection

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