Induction of systemic resistance and management of safflower<i>Macrophomina phaseolina</i>root-rot disease by biocontrol agents

Govindappa, M.; Lokesh, S.; Ravishankar, V.; Naik, V. Rudra; Raju, S.

doi:10.1080/03235400701652227

Cited by 42 publications

(23 citation statements)

References 26 publications

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“…However, a considerable increase was occurred in PAL after 5 days of inoculation in most treatments. These results are in agreement with Govindappa et al (2010) showing that PPO and POD activities increased in safflower plants treated by Pseudomonas fluorescens after inoculation with Macrophomina phaseolina. In addition, an increased level of PPO has been reported in pigeon pea plants when inoculated with Rhizobia, Bacillus cereus BS03 and Pseudomonas aeruginosa against Fusarium sp.…”

Section: Discussionsupporting

confidence: 82%

Synergistic effect of acetyl salicylic acid and DL-Beta-aminobutyric acid on biocontrol efficacy of Bacillus strains against tomato bacterial wilt

Almoneafy¹,

Ojaghian²,

Seng-fu³

et al. 2013

Trop. plant pathol.

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This study was conducted to assess the biocontrol efficacy of Bacillus subtilis (strain 4812) and Bacillus methylotrophicus (strain H8) individually or in combination with two plant defense inducers including Acetyl salicylic acid (ASA) and DL-Beta-aminobutyric acid (BABA) against tomato wilt caused by Ralstonia solanacearum. The pathogen was significantly inhibited by all treatments in the greenhouse and in vitro tests. The treatments H8+ASA and 4812+H8 were found to be the most effective treatments in in vitro tests. Applied on tomato seeds and as soil drenching, the disease was most inhibited by H8 whereas 4812+H8+ASA was the least effective treatment. High activity of phenylalanine ammonia-lyase was observed in the plants treated with 4812+H8, H8+ASA and 4812+H8+ASA. The highest expression of peroxidase and polyphenoloxidase enzymes was found in the plants treated with H8, 4812+H8 and H8+ASA. The result of real time PCR showed that concentration of the pathogen in stem tissues was significantly reduced in all treated plants and H8+ASA was the most effective treatment. This study revealed that combined application of Bacillus strains can be considered as a more effective biocontrol agent against tomato bacterial wilt. Furthermore, the synergistic effect of plant defense inducers was variable to different Bacillus strains.

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Section: Discussionsupporting

confidence: 82%

Synergistic effect of acetyl salicylic acid and DL-Beta-aminobutyric acid on biocontrol efficacy of Bacillus strains against tomato bacterial wilt

Almoneafy¹,

Ojaghian²,

Seng-fu³

et al. 2013

Trop. plant pathol.

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“…The mechanisms by which these bacteria affect plants involve the production of phytohormones (Indole acetic acid, gibberellin and cytokinin and other associated activities which include phosphate solubilization in soil resulting in stimulation of sunflower plant growth (Bhatia et al, 2005). Our results were consistent with those reported by Govindappa et al (2010) who found that application of P. fluorescens as seed treatment enhanced safflower plant growth and increased seed yield of induced plants. As for abiotic inducers, Shalaby (1997) indicated that seed treatment with KCl significantly increased seed yield of sesame plants.…”

Section: Discussionsupporting

confidence: 93%

Influences of some biotic and abiotic factors on protein production and as inducers of Fusarium wilt disease resistance in lupine (Lupinus albus L.)

Mohamed¹,

Rahman²,

Mazen³

2013

Afr. J. Microbiol. Res.

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Two bacterial species; Pseudomonas fluorescens and Pseudomonas putida and three different chemical compounds; copper sulphate (CuSO 4), Indole butyric acid (IBA) and potassium chloride (KCl) were tested for their ability to induce resistance in lupine plants against wilt disease caused by Fusarium oxysporum f. sp. lupini. Treatment of seeds with the selected bacterial species and chemical compounds significantly reduced wilt disease incidence of Fusarium oxysporum f. sp. in Lupine under greenhouse conditions. Potassium chloride and Pseudomonas fluorescens were most effective. Sodium dodecyl sulphate-polyacrylamide gel electrophresis (SDS-PAGE) analysis of lupine seedlings revealed that seeds treated with biotic and abiotic inducers resulted in a rapid induction of different novel Pathogenesis-related protein (PR) in shoot and root of lupine seedlings upon infection with the pathogen. These new proteins were not detected in untreated healthy or infected controls. This study aimed to use bacterial species and chemical compounds to decrease Fusarium wilt disease.

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“…CSA (2009) reported that, groundnut yields with good management practiced could rise to 3 tons/ha, supporting the present finding. The increase in yield is also attributed to increased vigor of healthy plants through growth regulators produced by Trichoderma spp., which improved plant photosynthesis according to Govindappa et al (2011). Albeit, Trichoderma spp.…”

Section: Discussionmentioning

confidence: 99%

Integrated management of Aspergillus species and aflatoxin production in groundnut (Arachis hypogaea L.) through application of farm yard manure and seed treatments with fungicides and Trichoderma species

Mohammed¹,

Chala²,

Ojiewo³

et al. 2018

Afr. J. Plant Sci.

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Groundnut (Arachis hypogaea L.) is an important cash crop in the lowland areas of Ethiopia. However, prevalence of Aspergillus invasions and subsequent aflatoxin contamination compromises the quality of groundnut kernels. This study was conducted to evaluate the effect of farm yard manure (FYM) and seed treatments against Aspergillus species pod colonization and aflatoxin accumulation under field conditions. The inhibitory efficacy of Trichoderma species as biocontrol agents was also assessed. A total of 20 treatment combinations including pre-planting applications of FYM at 0, 2.5, 5, and 7.5 tons/ha and seed treatments with carbendazim at 2 g/kg and mancozeb at 3 g kg-1 , and Trichoderma harzianum and Trichoderma viride each at 5 g/kg as well as untreated seed as control were used. Treatments were laid out in a randomized complete block design (RCBD) in three replications. The experiment was conducted in two consecutive seasons (2014 and 2015) at Babile Haramaya University sub-Research Station. The highest pod and seed yields (1901.5 and 1281.5 kg/ha, respectively) were recovered from plots treated with T. harzianum at 5 g/kg seed. A. flavus was abundantly recorded in control plots, which could be responsible for the high aflatoxin B 1 (5704.4 µg/kg) and B 2 (2219.0 µg/kg) contamination. However, plots treated with T. harzianum at 5 g/kg seed and FYM at 5 tons/ha + T. harzianum at 5 g/kg were free from aflatoxin. Integrations of T. harzianum as biocontrol seed treatment and soil amendment with FYM were effective in the pre-harvest management of Aspergillus spp. and aflatoxins contamination.

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Induction of systemic resistance and management of safflowerMacrophomina phaseolinaroot-rot disease by biocontrol agents

Cited by 42 publications

References 26 publications

Synergistic effect of acetyl salicylic acid and DL-Beta-aminobutyric acid on biocontrol efficacy of Bacillus strains against tomato bacterial wilt

Synergistic effect of acetyl salicylic acid and DL-Beta-aminobutyric acid on biocontrol efficacy of Bacillus strains against tomato bacterial wilt

Influences of some biotic and abiotic factors on protein production and as inducers of Fusarium wilt disease resistance in lupine (Lupinus albus L.)

Integrated management of Aspergillus species and aflatoxin production in groundnut (Arachis hypogaea L.) through application of farm yard manure and seed treatments with fungicides and Trichoderma species

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