Antagonism of Aspergillus terreus to Sclerotinia sclerotiorum

Melo, I. S. de; Faull, J. L.; Nascimento, Rosely S.

doi:10.1590/s1517-83822006000400002

Cited by 27 publications

(19 citation statements)

References 14 publications

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“…Inhibition of M. phaseolina by A. flavus was supported by Cotty and Bayman (1993) indicated that atoxigenic strains of A. flavus will competitively exclude the aflatoxin producing strains of same fungal species. A. terreus as a biocontrol agent against M. phaseolina was similarly reported by Melo et al (2006) specified sclerotial viability of the pathogen was found to be affected by treatment of sclerotia, with conidia…”

Section: Discussionmentioning

confidence: 61%

Isolation, Identification and in vitro Screening of Rhizospheric Fungi for Biological Control of Macrophomina phaseolina

Mallikarju¹,

Gowdu²

2015

Asian J. of Plant Pathology

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The present study was aimed to identify charcoal rot pathogen of groundnut (Arachis hypogaea L.) in Anantapur district, Andhra Pradesh and assess the interactions among the fungal isolates from rhizosphere. During field survey, a potential charcoal rot pathogen Macrophomina phaseolina was isolated and identified. About 10 different rhizosphere soils of healthy groundnut plants were selected for isolation of fungi. Among 25 isolates assayed for antagonism, ten different fungi significantly inhibited colony growth of M. phaseolina in dual culture plates and morphological identification was done at (400X). Antagonistic fungi inflicted 25.6-41% mycelial growth inhibition in M. phaseolina. Colony growth and sclerotia production of M. phaseolina ceased effectively by Emericella nidulans and E. rugulosus, respectively. Mutual inhibition between Alternaria alteranata, Aspergillus flavus, A. terreus, Penicillium chrysogenum and M. phaseolina was observed. Penicillium oxalicum, Gliocladium roseum and Aspergillus versicolor significantly reduces growth with <1 mm demarcation lineat 7 and 14 Days after Inoculation (DAI) on PDA medium. These antagonistic interactions influence the growth of the pathogen.

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Section: Discussionmentioning

confidence: 61%

Isolation, Identification and in vitro Screening of Rhizospheric Fungi for Biological Control of Macrophomina phaseolina

Mallikarju¹,

Gowdu²

2015

Asian J. of Plant Pathology

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“…Throughout the experimentation, there was no instance of direct penetration of the leaf tissue by A. terreus PC (Figure 5). Based on SEM analysis, A. terreus was shown to produce appressorium during interaction with Sclerotinia sclerotiorum [19]. In this study, no appressorial structure was observed on potato leaf tissue.…”

Section: Resultsmentioning

confidence: 69%

“…Collectively, there is likelihood that waste metabolites produced from AC might negatively affect the host defense leading to the development of disease. A. terreus is often explored as a bioagent for pest control [19,24]. Nevertheless, A. terreus is an efficient cellulase producer [25,26].…”

Section: Resultsmentioning

confidence: 99%

Invasion of Solanum tuberosum L. by Aspergillus terreus: a microscopic and proteomics insight on pathogenicity

et al. 2014

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BackgroundAspergillus terreus is one of the most harmful filamentous fungal pathogen of humans, animals and plants. Recently, researchers have discovered that A. terreus can cause foliar blight disease in potato (Solanum tuberosum L.). We used light and scanning electron microscopy, and performed proteomics analysis in an attempt to dissect the invasion process of A. terreus in this important crop.ResultsMicroscopic study revealed that invasion of leaf tissue is marked by rapid germination of A. terreus phialidic conidia (PC) by 4 h after inoculation. By 8 h after inoculation, primary germ tubes from PC differentiated into irregular protuberance, often displayed stomata atropism, and failed to penetrate via the epidermal cells. Colonization of leaf tissues was associated with high rate of production of accessory conidia (AC). These analyses showed the occurrence of a unique opposing pattern of AC, tissue-specific and produced on melanized colonizing hyphae during the infection of leaf tissue. A significant proteome change hallmarked by differential expression of class I patatin, lipoxygenase, catalase-peroxidase complex, and cysteine proteinase inhibitor were observed during tuber colonization. These proteins are often involved in signal transduction pathways and crosstalk in pathogenic responses.ConclusionA. terreus abundantly produced AC and multipolar germinating PC to invade potato leaf tissue. Additionally, A. terreus differentially induced enzymes in potato tuber during colonization which facilitates rapid disease development.

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“…In fact, several studies have promoted the antagonistic activity of Aspergillus species which have been identified in compostor residue-amended substrates, in solarised and non-solarised soils, in the rhizosphere, in decaying plant material, in stored grains, etc. Furthermore, some of them are essential component of many compost microbiota [28,[49][50][51][52]. Moreover, Aspergillus species have been reported as endophytes with antifungal activity [53][54][55] and able to produce several metabolites such as phenolic and bioactive flavonoid compounds.…”

Section: Discussionmentioning

confidence: 99%

Soil-borne and Compost-borne Aspergillus Species for Biologically Controlling Post-harvest Diseases of Potatoes Incited by Fusarium sambucinum and Phytophthora erythroseptica

Abdallah¹,

Khiareddine²,

Mejdoub-Trabelsi³

2015

J Plant Pathol Microbiol

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Nine isolates of Aspergillus spp., isolated from soil and compost were tested in vitro and in vivo for their antifungal activity against Fusarium sambucinum and Phytophthora erythroseptica, the causal agents of the Fusarium dry rot and pink rot of potato tubers. Tested using the dual culture method, the pathogen growth of F. sambucinum and P. erythroseptica was inhibited by 27 to 68% and 16 to 25% by all Aspergillus species, respectively. The highest inhibitory activity against both pathogens was induced by the isolate CH12 of A. niger. A significant reduction of the mycelial growth of both pathogens tested using the inverse double culture method involves the presence of volatile antifungal metabolites. Their effectiveness was also evaluated as tuber treatment prior to inoculation with the pathogens. The highest effectiveness in reducing Fusarium dry rot severity was recorded on tubers treated with the isolate CH12 of A. niger. This study also revealed that the efficacy of Aspergillus spp. as biocontrol agents may be enhanced by varying the timing of their application. In fact, the lesion diameter of dry and pink rots was reduced by 54-70 and 52% with preventive application, respectively. However, this parameter decreased by 21-48 and 47% when the Aspergillus spp. were applied simultaneously with pathogens, respectively. Similarly, diseases' severity, estimated based on average penetration of F. sambucinum and P. erythroseptica, was reduced by 57-77 and 55% with preventive treatments and by 29-68 and 44% with simultaneous application, respectively. This study reveals that Aspergillus spp., isolated from compost and soil, exhibits an interesting antifungal activity toward F. sambucinum and P. erythroseptica and may represent a potential source of biopesticide. Testing of their culture filtrates, their organic extracts and their toxicity may give additional information on their safe use as biocontrol agents.

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Antagonism of Aspergillus terreus to Sclerotinia sclerotiorum

Cited by 27 publications

References 14 publications

Isolation, Identification and in vitro Screening of Rhizospheric Fungi for Biological Control of Macrophomina phaseolina

Isolation, Identification and in vitro Screening of Rhizospheric Fungi for Biological Control of Macrophomina phaseolina

Invasion of Solanum tuberosum L. by Aspergillus terreus: a microscopic and proteomics insight on pathogenicity

Soil-borne and Compost-borne Aspergillus Species for Biologically Controlling Post-harvest Diseases of Potatoes Incited by Fusarium sambucinum and Phytophthora erythroseptica

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