Suresh Patil | University of Agricultural Sciences,GKVK,Bangalore (original) (raw)

Suresh Patil

My self Dr SURESH PATIL a associate professor and interested in research and field extension in plant pathology discipline under agriculture streem

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Research paper thumbnail of Molecular Variability of Causal Agents of Twister Disease of Onion

Journal of Pure and Applied Microbiology, 2016

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Research paper thumbnail of Characterization of phytotoxin producing Alternaria species isolatedfrom sesame leavesand their toxicity

Indian journal of experimental biology, 2017

Sesame (Sesamum indicum L.), is an important oilseed crop in the tropics and subtropics, referred... more Sesame (Sesamum indicum L.), is an important oilseed crop in the tropics and subtropics, referred as “Queen of Oilseeds” owing to its high cooking quality and medicinal value. Sesame production, particularly in India, has been declining since last decade and ‘Leaf blight’ caused by Alternaria spp. is reported to cause yield loss up to 30-40%. Here, we investigated the fungal toxin produced by Alternaria and its pathogenicity. A total of 164 Alternaria strainswere isolated on potato dextrose agar media from the infected sesame leaves showing circular concentric rings with dark brown spots symptoms. All the isolates were screened for cultural and morphological characters. Colour of the fungus was grey to dark brown, formed smooth, raised, fluffy, and regular to irregular margins. Among 164 isolates, 43 isolates were moderately growing and 121 were fast in growth. The DNA of the isolate was amplified with ITS primers and sequence of BLAST results confirmed seven different species of Al...

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Research paper thumbnail of In vitro efficacy fungicides against causal agents of twister disease of onion

INTERNATIONAL JOURNAL OF PLANT PROTECTION, 2016

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Research paper thumbnail of First Report on Association of <I>Meloidogyne graminicola</I> in Twister Disease of Onion:An Emerging Problem in Coastal Tract of India

Indian Phytopathology, 2017

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Research paper thumbnail of Etiology of Twister Disease Complex in Onion

International Journal of Current Microbiology and Applied Sciences

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Research paper thumbnail of First report on association of Meloidogyne graminicola in twister disease of onion: An emerging problem in coastal tract of India

Onion crop grown in west coast of sothern India has been seriously affected by the problem of oni... more Onion crop grown in west coast of sothern India has been seriously affected by the problem of onion twister disease charetorized by the symptoms viz., twisting of leaf and neck, slight to prominent galls in roots with root proliferation and scanty discolouration of root system. Survey carried out during rabi/summer of 2011-12 and 2012-13 revealed the prevalence of such disease in all the major onion cultivating areas of Karnataka (India). The highest disease index of 29.37 and 24.05 per cent was noticed Uttar Kannada district during 2011-12 and 2012-13 respectively. Aetiological investigations revealed the association of a nematode with symptomatic onion plants having root galls. Isolated nematode when inoculated, resulted in slender plants with typical abnormal elongation of leaf with proliferation and neck twisting during initial stage and at later stage whole plant appeared to be abnormal showing typical twisting symptoms. Artificially inoculated plant with typical symptoms were found to have severe galling with typical hooks like roots. At later stage discoloration and complete destruction of root system demonstrated the Koch's postulate for the involvement of isolated nematode in the disease. Identity of the nematode was confirmed as Meloidogyne graminicola by morphometric and perineal pattern studies. This is the first report of association of rice root knot nematode involved in onion twister disease.

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Research paper thumbnail of Molecular Variability of Causal Agents of Twister Disease of Onion

Journal of Pure and Applied Microbiology, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Characterization of phytotoxin producing Alternaria species isolatedfrom sesame leavesand their toxicity

Indian journal of experimental biology, 2017

Sesame (Sesamum indicum L.), is an important oilseed crop in the tropics and subtropics, referred... more Sesame (Sesamum indicum L.), is an important oilseed crop in the tropics and subtropics, referred as “Queen of Oilseeds” owing to its high cooking quality and medicinal value. Sesame production, particularly in India, has been declining since last decade and ‘Leaf blight’ caused by Alternaria spp. is reported to cause yield loss up to 30-40%. Here, we investigated the fungal toxin produced by Alternaria and its pathogenicity. A total of 164 Alternaria strainswere isolated on potato dextrose agar media from the infected sesame leaves showing circular concentric rings with dark brown spots symptoms. All the isolates were screened for cultural and morphological characters. Colour of the fungus was grey to dark brown, formed smooth, raised, fluffy, and regular to irregular margins. Among 164 isolates, 43 isolates were moderately growing and 121 were fast in growth. The DNA of the isolate was amplified with ITS primers and sequence of BLAST results confirmed seven different species of Al...

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Research paper thumbnail of In vitro efficacy fungicides against causal agents of twister disease of onion

INTERNATIONAL JOURNAL OF PLANT PROTECTION, 2016

Bookmarks Related papers MentionsView impact

Research paper thumbnail of First Report on Association of <I>Meloidogyne graminicola</I> in Twister Disease of Onion:An Emerging Problem in Coastal Tract of India

Indian Phytopathology, 2017

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Etiology of Twister Disease Complex in Onion

International Journal of Current Microbiology and Applied Sciences

Bookmarks Related papers MentionsView impact

Research paper thumbnail of First report on association of Meloidogyne graminicola in twister disease of onion: An emerging problem in coastal tract of India

Onion crop grown in west coast of sothern India has been seriously affected by the problem of oni... more Onion crop grown in west coast of sothern India has been seriously affected by the problem of onion twister disease charetorized by the symptoms viz., twisting of leaf and neck, slight to prominent galls in roots with root proliferation and scanty discolouration of root system. Survey carried out during rabi/summer of 2011-12 and 2012-13 revealed the prevalence of such disease in all the major onion cultivating areas of Karnataka (India). The highest disease index of 29.37 and 24.05 per cent was noticed Uttar Kannada district during 2011-12 and 2012-13 respectively. Aetiological investigations revealed the association of a nematode with symptomatic onion plants having root galls. Isolated nematode when inoculated, resulted in slender plants with typical abnormal elongation of leaf with proliferation and neck twisting during initial stage and at later stage whole plant appeared to be abnormal showing typical twisting symptoms. Artificially inoculated plant with typical symptoms were found to have severe galling with typical hooks like roots. At later stage discoloration and complete destruction of root system demonstrated the Koch's postulate for the involvement of isolated nematode in the disease. Identity of the nematode was confirmed as Meloidogyne graminicola by morphometric and perineal pattern studies. This is the first report of association of rice root knot nematode involved in onion twister disease.

Bookmarks Related papers MentionsView impact

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