Identification of plant growth promoting Rhizosphere Bacillus sp. WG4 antagonistic to Pythium myriotylum and its enhanced antifungal effect in association with Trichoderma

Among the various rhizospheric bacterial isolates screened from Westren Ghat regions of Kerala, a Bacillus sp. with both antagonistic activity to Pythium myriotylum and plant growth promoting properties was identified. Scanning electron microscopic analysis revealed significant ultrastructural chang...

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Autores principales:	Jimtha,J.C, Jishma,P, Arathy,G.B, Anisha,C, Radhakrishnan,E.K
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2016
Materias:	WG4 biocontrol rhizosphere plant growth promoting activity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000300002
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spelling	oai:scielo:S0718-951620160003000022017-02-07Identification of plant growth promoting Rhizosphere Bacillus sp. WG4 antagonistic to Pythium myriotylum and its enhanced antifungal effect in association with TrichodermaJimtha,J.CJishma,PArathy,G.BAnisha,CRadhakrishnan,E.K WG4 biocontrol rhizosphere plant growth promoting activity Among the various rhizospheric bacterial isolates screened from Westren Ghat regions of Kerala, a Bacillus sp. with both antagonistic activity to Pythium myriotylum and plant growth promoting properties was identified. Scanning electron microscopic analysis revealed significant ultrastructural changes of hyphae and spores of P. myriotylum upon treatment with Bacillus sp.WG4. For the structural characterization of antagonistic compound in the crude exract, GC MS analysis was carried out and this has resulted in the identification of presence of pyrrolo [1,2- a] pyrazine-1,4-dione, hexahydro-3-(phenylmethyl) as basis of antifungal activity. The in vivo antifungal activity of Bacillus strain was analysed by pre-inoculation of this to ginger rhizome. Here the presence of Bacillus strain was found to provide effective protection to ginger rhizome upon inoculation with Pythium myriotylum. Very interestingly, when the Bacillus strain was checked for its synergistic antifungal activity with commercially available biocontrol agent Trichoderma, the combination was found to have increased antifungal activity. Due to its antifungal and growth enhancement effects, the isolated strain can be of promising application as antifungal plant probiotic agent alone or in combination with other agents like Trichoderma.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.16 n.3 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000300002en10.4067/S0718-95162016005000026
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	WG4 biocontrol rhizosphere plant growth promoting activity
spellingShingle	WG4 biocontrol rhizosphere plant growth promoting activity Jimtha,J.C Jishma,P Arathy,G.B Anisha,C Radhakrishnan,E.K Identification of plant growth promoting Rhizosphere Bacillus sp. WG4 antagonistic to Pythium myriotylum and its enhanced antifungal effect in association with Trichoderma
description	Among the various rhizospheric bacterial isolates screened from Westren Ghat regions of Kerala, a Bacillus sp. with both antagonistic activity to Pythium myriotylum and plant growth promoting properties was identified. Scanning electron microscopic analysis revealed significant ultrastructural changes of hyphae and spores of P. myriotylum upon treatment with Bacillus sp.WG4. For the structural characterization of antagonistic compound in the crude exract, GC MS analysis was carried out and this has resulted in the identification of presence of pyrrolo [1,2- a] pyrazine-1,4-dione, hexahydro-3-(phenylmethyl) as basis of antifungal activity. The in vivo antifungal activity of Bacillus strain was analysed by pre-inoculation of this to ginger rhizome. Here the presence of Bacillus strain was found to provide effective protection to ginger rhizome upon inoculation with Pythium myriotylum. Very interestingly, when the Bacillus strain was checked for its synergistic antifungal activity with commercially available biocontrol agent Trichoderma, the combination was found to have increased antifungal activity. Due to its antifungal and growth enhancement effects, the isolated strain can be of promising application as antifungal plant probiotic agent alone or in combination with other agents like Trichoderma.
author	Jimtha,J.C Jishma,P Arathy,G.B Anisha,C Radhakrishnan,E.K
author_facet	Jimtha,J.C Jishma,P Arathy,G.B Anisha,C Radhakrishnan,E.K
author_sort	Jimtha,J.C
title	Identification of plant growth promoting Rhizosphere Bacillus sp. WG4 antagonistic to Pythium myriotylum and its enhanced antifungal effect in association with Trichoderma
title_short	Identification of plant growth promoting Rhizosphere Bacillus sp. WG4 antagonistic to Pythium myriotylum and its enhanced antifungal effect in association with Trichoderma
title_full	Identification of plant growth promoting Rhizosphere Bacillus sp. WG4 antagonistic to Pythium myriotylum and its enhanced antifungal effect in association with Trichoderma
title_fullStr	Identification of plant growth promoting Rhizosphere Bacillus sp. WG4 antagonistic to Pythium myriotylum and its enhanced antifungal effect in association with Trichoderma
title_full_unstemmed	Identification of plant growth promoting Rhizosphere Bacillus sp. WG4 antagonistic to Pythium myriotylum and its enhanced antifungal effect in association with Trichoderma
title_sort	identification of plant growth promoting rhizosphere bacillus sp. wg4 antagonistic to pythium myriotylum and its enhanced antifungal effect in association with trichoderma
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000300002
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Identification of plant growth promoting Rhizosphere Bacillus sp. WG4 antagonistic to Pythium myriotylum and its enhanced antifungal effect in association with Trichoderma

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