Production of Bacteriocins by Root Nodule Bacteria

Sridevi, M.; Mallaiah, K. V.

doi:10.3923/ijar.2008.161.165

Cited by 7 publications

(2 citation statements)

References 12 publications

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“…Some transconjugants appeared significant clear hydrolysis zone on colloidal chitin agar medium in relation to the mid-parent (Table 7). These results agreed with that obtained by Sridevi and Mallaiah (2008) , who found that Rhizobium sp. appeared maximum chitinolytic activity at 36 h of incubation at neutral pH.…”

Section: Chitinase and Indole Acetic Acid Productionsupporting

confidence: 93%

Expression of Serratia and Pseudomonas Chitinase Genes in Rhizobium Via Horizontal Gene Transfer

شواف¹,

کمال²,

الهادى³

et al. 2019

Journal of Agricultural Chemistry and Biotechnology

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This study aimed to transfer chitinase genes into Rhizobium leguminosarum bv. vicia in order to enhance the defense of faba bean plants against soil pathogens, in addition to , improving symbiotic nitrogen fixation, as well. Toward this target, 12 transconjugants resulted from conjugation between Pseudomonas flurocescens and Serratia marcescence as a donors against four strains of Rhizobium leguminosarum. The donar strains were tested for chitinolytic activity depending on chitin hydrolysis zone appeared on chitin agar medium. Six out of eight matings between Pseudomonas and Serratia against Rhizobium were successeded. Some recombinants expressed significant amount of IAA production in both complete and minimal media. Some of Rhizobium transcojugants showed significant performance for chitinase activity above the mid-parent. Cell culture and cellfree filterate of some Rhizobium transconjugants showed higher antagonistic activity against Rhizoctonia solani in relation to the mid-parent, because they were able to produce higher amounts of antifungal metabolites. These transcojugants may inhibit the growth of various soil-born pathogens with a higher efficiency than their parents.

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Section: Chitinase and Indole Acetic Acid Productionsupporting

confidence: 93%

Expression of Serratia and Pseudomonas Chitinase Genes in Rhizobium Via Horizontal Gene Transfer

شواف¹,

کمال²,

الهادى³

et al. 2019

Journal of Agricultural Chemistry and Biotechnology

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show abstract

“…This gene plays an important role in chitin metabolism to be used as a carbon and energy source by microorganisms. In addition, Sridevi and Mallaiah (2008) found that out of 26 Rhizobium strains isolated from root nodules of Sesbania sesban, only 12 strains showed chitinase activity. The same authors also found that Rhizobium sp.…”

Section: Genome Shorteningmentioning

confidence: 99%

Recombinants Rhizobacteria Enhanced Biological Control of Rhizoctonia solani infected Faba Bean

Kamal

Zaied

El–Hadi

et al. 2020

Journal of Agricultural Chemistry and Biotechnology

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This study aimed to test the effect of Rhizobium recombinants on the vegetative growth and yield components of faba bean under biotic stress of Rhizoctonia solani. Tweleve transconjugants resulted from six crosses were evaluated for their antigonism against Rhizoctonia solani. The results showed variations in chitin hydrolysis after genome shortening. At the molecular level, the recipient strains of rhizobia showed more similarity with each other. However, the donar strains of Serratia and pseudomonas showed less similarity. Meanwhile , Rhizobium transconjugants genomes have a similar distribution of bands. Both transconjugants Tr 4 and Tr15 showed more genome size than the other ones due to high level of plasmid transfer. The same transconjugants recorded higher values of chitin hydrolysis zone due to higher expression of chitinase genes. Most transconjugants showed significant increase in nodulation above the uninoculated plants grown in the infected soil. Rhizobium inoculants improved the yield , chlorophyll concentration and NPK content of the plants grown in the soil infected with Rhizoctonia solani compared with uninoculated plants. The results indicated that Rhizobium inoculants improved the growth and yield of plants grown under biotic stress condition. In addition, improved rhizobia with chitinolytic enzymes producing genes could inhibit significantly the growth of pathogenic fungi.

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The Role of PGPR Secondary Metabolites in Alleviating Allelopathic Effects (Biotic Stress) and Induced Tolerance in Plants

Lourenzi

Loss²,

Souza³

et al. 2022

Secondary Metabolites and Volatiles of PGPR in Plant-Growth Promotion

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Production of Bacteriocins by Root Nodule Bacteria

Cited by 7 publications

References 12 publications

Expression of Serratia and Pseudomonas Chitinase Genes in Rhizobium Via Horizontal Gene Transfer

Expression of Serratia and Pseudomonas Chitinase Genes in Rhizobium Via Horizontal Gene Transfer

Recombinants Rhizobacteria Enhanced Biological Control of Rhizoctonia solani infected Faba Bean

The Role of PGPR Secondary Metabolites in Alleviating Allelopathic Effects (Biotic Stress) and Induced Tolerance in Plants

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