tailieunhanh - Evaluation of organic acid producing aspergillus niger isolates for the management of fusarium wilt of chickpea

The soil-borne necrotrophic fungal pathogen Fusarium oxysporum f. sp. Ciceris (FOC)infects chickpeaand causes wilt in any stage of plant from seedling to podding. Owing to climate change and ever changing nature of the pathogen, no resistant host cultivar is sustaining long against this disease. Hence, root resident Aspergillus niger isolates as native mycoflora were evaluated as bioagent against the FOC because chemical control has long been discouraged due to its circulation in food chain. In this study, we established the biocontrol potential of organic acid producing A. niger isolates under invitro and in-vivo conditions. | 2017 6 5 256-265 International Journal of Current Microbiology and Applied Sciences ISSN 2319-7706 Volume 6 Number 5 2017 pp. 256-265 Journal homepage http Original Research Article https Evaluation of Organic Acid Producing Aspergillus niger Isolates for the Management of Fusarium Wilt of Chickpea Swati Nayak and Vibha Department of Plant Pathology Jawaharlal Nehru Krishi Vishwa Vidyalaya Jabalpur 482 004 Madhya Pradesh India Corresponding author ABSTRACT The soil-borne necrotrophic fungal pathogen Fusarium oxysporum f. sp. Ciceris FOC infects chickpeaand causes wilt in any stage of plant from seedling to podding. Keywords Owing to climate change and ever changing nature of the pathogen no resistant host cultivar is sustaining long against this disease. Hence root resident Aspergillus niger Fungal isolates Fusarium wilt isolates as native mycoflora were evaluated as bioagent against the FOC because chemical Organic acids control has long been discouraged due to its circulation in food chain. In this study we Physiological established the biocontrol potential of organic acid producing A. niger isolates under in- parameters and vitro and in-vivo conditions. All the isolates produced tryptophan one proline three Disease incidence. histidine and nine hyproline and valine. The isolate1 was highly inhibitory towards the FOC under poison food technique while isolate9 was highly suppressive towards the Article Info pathogen under dual culture method. The maximum wilt reduction was recorded with Accepted isolate3 treatment that also helped the plant to retain maximum relative water content in 04 April 2017 leaves besides maintaining higher chlorophyll content. From the results it can be Available Online concluded that the response of bioagents under in-vitro conditions can vary under in-vivo 10 May 2017 conditions depending upon the inherent metabolite producing ability of the bioagent. This

• Nông nghiệp
• Fungal isolates
• Fusarium wilt
• Organic acids
• Physiological parameters
• Disease incidence
• Foliar fungal pathogens
• Foliar fungal pathogens of cowpea
• Bio control isolates
• In vitro evaluation for antagonistic potential
• In vitro evaluation
• Studies on native isolates
• Native isolates
• Fungal and bacterial bio agents against collar
• Bacterial bio agents against collar rot
• Bio agents against collar rot of Chickpea
• Heavy metals
• Fungal isolates obtained
• Selected soil samples
• Ado ekiti metropolis
• Entomopathogenic fungi
• Molecular identification
• Beauveria bassiana
• Metarhizium flavoviride var minus
• Entomopathogenic fungal isolates
• Fungal pathogens associated
• Spoilage of cucumber
• Cucumber (Cucumis sativus L ) fruits
• Cucumber (Cucumis sativus L )
• Charcoal rot
• Physiological parameters of crop
• Antagonistic capability
• Biopriming in vivo efficacy
• Trichoderrma etc
• Citrus fruit by local Trichoderma isolates
• Biological control
• Penicillium digitatum causing green rot
• Microbial characterization of yeast
• Fungal bloodstream infections
• Yeast isolates recovered
• Blood of patient admitted
• ICU in a tertiary care hospital
• Apple scab
• Genetic diversity
• Venturia inaequalis
• Apple plantations in Isparta Province
• Major fungal disease among apples varieties
• Corythucha arcuata
• Lethal concentration
• Biological control agent against C
• arcuata
• Rhizosphere soil
• AM Spore morphology
• Root colonization
• Plant growth
• Maize (Zea mays L)
• Pythium debaryanum
• Rhizoctonia solani
• Sclerotium rolfsii
• Trichoderma harzianum
• Trichoderma viride
• Pseudomonas fluorescence
• Soil borne pathogens
• Aspergillus fumigatus A comprehensive review
• 14 α sterol demethylase enzyme
• Azole resistant fungal isolates
• Grey green conidia
• Invasive blood stream infections