Systemic resistance and growth promotion of chili pepper induced by an antibiotic producing Bacillus vallismortis strain BS07

Park, Jin-Woo; Balaraju, Kotnala; Kim, Jin-Won; Lee, Se-Weon; Park, Kyungseok

doi:10.1016/j.biocontrol.2013.02.002

Cited by 60 publications

(38 citation statements)

References 36 publications

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“…The in vitro antagonism effects of all the bacterial isolates on the mycelial growth of C. gloeosporioides, C. acutatum, and B. dothidea were analyzed on potato dextrose agar (PDA; Difco, USA) with 0.5% (5 g/L) peptone (PDAP) using the dual culture plate assay method (Park et al, 2013). The pathogenic fungi were applied as mycelial plugs (6 mm in diameter) from the edge of a pre-cultured colony and were placed onto the center of each PDAP plate (90 mm in diameter).…”

Section: In Vitro Antagonism Testmentioning

confidence: 99%

Effects of rhizobacteria Paenibacillus polymyxa APEC136 and Bacillus subtilis APEC170 on biocontrol of postharvest pathogens of apple fruits

Kim

Balaraju²,

Jeon

2016

J. Zhejiang Univ. Sci. B

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Abstract:In this study, plant growth-promoting rhizobacteria (PGPR) were evaluated as potential biocontrol agents against postharvest pathogens of apple fruits. In vitro bioassays revealed that, out of 30 isolates screened, isolates APEC136 and APEC170 had the most significant inhibitory effects against the mycelial growth of several fungal pathogens. Analysis of 16S ribosomal RNA (rRNA) sequences identified the two effective isolates as Paenibacillus polymyxa and Bacillus subtilis, respectively. The two strains showed greater growth in brain-heart infusion broth than in other growth media. Treatment of harvested apples with suspensions of either strain reduced the symptoms of anthracnose disease caused by two fungal pathogens, Colletotrichum gloeosporioides and Colletotrichum acutatum, and white rot disease caused by Botryosphaeria dothidea. Increased productions of amylase and protease by APEC136, and increased productions of chitinase, amylase, and protease by APEC170 might have been responsible for inhibiting mycelial growth. The isolates caused a greater reduction in the growth of white rot than of anthracnose. These results indicate that the isolates APEC136 and APEC170 are promising agents for the biocontrol of anthracnose and white rot diseases in apples after harvest, and suggest that these isolates may be useful in controlling these diseases under field conditions.

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Section: In Vitro Antagonism Testmentioning

confidence: 99%

Effects of rhizobacteria Paenibacillus polymyxa APEC136 and Bacillus subtilis APEC170 on biocontrol of postharvest pathogens of apple fruits

Kim

Balaraju²,

Jeon

2016

J. Zhejiang Univ. Sci. B

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“…Our earlier studies indicated EXTN-1 and BS07 as potential biocontrol agents inducing resistance against various fungal and bacterial disease besides enhancing plant growth in various crops (Part et al, 2006a(Part et al, ,b, 2007Park et al, 2013;Thanh et al, 2009). In this study, strains EXTN-1and BS07M could reduce soft rot on leaves by induced resistance and increase plant fresh weight, however, the effects of the strains were not remarkable compared to untreated control when the tested antibiotics (oxolinic acid, streptomycin, and validamycin A).…”

Section: Resultsmentioning

confidence: 99%

“…Two days after foliar application, leaf discs (diameter 14 mm) were collected, and wounded by a needle on the centre. The leaf discs were drop-inoculated by SCC1 (20 ml of 10 8 cfu/ ml) on the wounding, and disease severity (%) was assessed (Park et al, 2013). To study the effect on growth promoting ability, Chinese cabbages were grown in pots (diameter 90 mm) for three weeks.…”

Section: Effect Of Three Antibiotics On Viability Of Biocontrol Agentsmentioning

confidence: 99%

“…EXTN-1 was effective against wilt by Ralstonia solanacearum and Fusarium oxysporum on tomato and potato, foot rot by Phytophthora capsici on black pepper and multiple diseases in other various crops such as rice, tobacco, potato, and cucumber (Park et al, 2006a(Park et al, ,b, 2007Thanh et al, 2009). Mutant strain BS07M was derived from strain BS07, which was capable to protect chili pepper from three pathogens viz., P. carotovorum (SCC1), P. capsici, and Colletotrichum acutatum by induced systemic resistance besides promoting plant growth under field condition (Park et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Influence of Commercial Antibiotics on Biocontrol of Soft Rot and Plant Growth Promotion in Chinese Cabbages by Bacillus vallismortis EXTN-1 and BS07M

Sang

Dutta

Park

2015

Research in Plant Disease

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We investigated influence of three commercial antibiotics viz., oxolinic acid, streptomycin, and validamycin A, on biocontrol and plant growth promoting activities of Bacillus vallismortis EXTN-1 and BS07M in Chinese cabbage. Plants were pre-drenched with these strains followed by antibiotics application at recommended and ten-fold diluted concentration to test the effect on biocontrol ability against soft rot caused by Pectobacterium carotovorum SCC1. The viability of the two biocontrol strains and bacterial pathogen SCC1 was significantly reduced by oxolinic acid and streptomycin in vitro assay, but not by validamycin A. In plant trials, strains EXTN-1 and BS07M controlled soft rot in Chinese cabbage, and there was a significant difference in disease severity when the antibiotics were applied to the plants drenched with the two biocontrol agents. Additional foliar applications of oxolinic acid and streptomycin reduced the disease irrespective of pre-drench treatment of the PGPRs. However, when the plants were pre-drenched with EXTN-1 followed by spray of validamycin A at recommended concentration, soft rot significantly reduced compared to untreated control. Similarly, strains EXTN-1 and BS07M significantly enhanced plant growth, but it did not show synergistic effect with additional spray of antibiotics. Populations of the EXTN-1 or BS07M in the rhizosphere of plants sprayed with antibiotics were significantly affected as compared to control. Taken together, our results suggest that the three antibiotics used for soft rot control in Chinese cabbage could affect bacterial mediated biocontrol and plant growth promoting activities. Therefore, combined treatment of the PGPRs and the commercial antibiotics should be carefully applied to sustain environmental friendly disease management.

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“…Indeed, there is data reporting that seed or plant inoculation with some PGPR genus as Azospirillum, Bacillus, Enterobacter, Klebsiella and Pseudomons can result in more vigorous seedlings, a reduction in the need of fertilizers and/or an increased plant tolerance to abiotic stresses (Kokallis-Burelle et al 2006;Lamsal et al 2013;Park et al 2013). Also, to increase the antioxidant potential and phenolics content in vegetables and fruits, which in turn could help improve their nutritional value (Nautiyal et al 2008;Kohler et al 2009;Cappellari et al 2013;Jain et al 2014;Ramos-Solano et al 2014).…”

Section: Introductionmentioning

confidence: 95%

Azospirillum spp. and Related PGPRs Inocula Use in Intensive Agriculture

Casanovas

Fasciglione

Barassi

2015

Handbook for Azospirillum

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From the beginning of plant domestication, extensive farming has been the main strategy adopted by agriculture to produce large amounts of food. However, plant production in a continuously deteriorating environment and an exponentially growing human population are important factors that challenge agriculture nowadays. Moreover, agricultural lands are currently expanded to marginal, arid, or semiarid regions where crops are exposed to abiotic stresses as drought and salinity, this last negative factor aggravated by different anthropogenic actions. In addition, contemporary society requires from agriculture to provide food products with high market and nutritional qualities as fruits and vegetables, which should also be free of agrochemicals. In consequence, it is imperative to develop friendly, noncontaminant, sustainable, and energy-saving plant production strategies. In this regard, vegetable production by intensive farming in controlled environments is continuously expanding. On the other hand, recent reports show that plant inoculation with plant-growth promoting rhizobacteria (PGPR) could improve vegetable quality and yield under abiotic stresses, and to reduce the pressure that current agriculture exerts on the environment. Within this context, our main purpose was to describe a number of techniques aimed to study the plausible beneficial effects of Azospirillum and related PGPR inoculation on vegetable growth and nutritional quality, with emphasis on the promotion of antioxidant activity.

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Systemic resistance and growth promotion of chili pepper induced by an antibiotic producing Bacillus vallismortis strain BS07

Cited by 60 publications

References 36 publications

Effects of rhizobacteria Paenibacillus polymyxa APEC136 and Bacillus subtilis APEC170 on biocontrol of postharvest pathogens of apple fruits

Effects of rhizobacteria Paenibacillus polymyxa APEC136 and Bacillus subtilis APEC170 on biocontrol of postharvest pathogens of apple fruits

Influence of Commercial Antibiotics on Biocontrol of Soft Rot and Plant Growth Promotion in Chinese Cabbages by Bacillus vallismortis EXTN-1 and BS07M

Azospirillum spp. and Related PGPRs Inocula Use in Intensive Agriculture

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