Streptomyces alnias a biocontrol agent to root-rot of grapevine and increasing their efficiency by biofertilisers inocula

Autor:	El-Sayed H. E. Ziedan, Riad Sedki Riad El-Mohamedy, Mohamed A. Abd Alla, Eman S.H. Farrag
Rok vydání:	2010
Předmět:	Hyperparasite biology Hypha Botany Fusarium oxysporum Biological pest control Root rot food and beverages biology.organism_classification Antagonism Agronomy and Crop Science Streptomyces Conidium
Zdroj:	Archives Of Phytopathology And Plant Protection. 43:634-646
ISSN:	1477-2906 0323-5408
DOI:	10.1080/03235400802021264
Popis:	Root-rotted samples of grapevine cv. superior were collected from Nobaria province, Beheira Governorate, Egypt. Fusarium oxysporum Schlech. was the most fungal causing root-rot syndrome of grapevine and directly affected the yield productivity. Seven isolates of Streptomyces were isolated from grapevine rhizospheric soil and screened for antagonistic activities against F. oxysporum on dual culture plate. All isolates showed antifungal activity, but isolate No. 1 exhibited the highest activity. It was identified as Streptomyces alni according to morphological, cultural, physiological and biochemical studies. The properties of the antagonism were revealed by scanning electron microscopy (SEM) examination of F. oxysporum and S. alni on PDA medium. The forms of antagonism found in this study according to the interaction between the S. alni and the pathogen indicated a hyperparasite, including inhibition of fungal growth and colonisation of S. alni over F. oxysporum hyphae. Also, malformation and lysis of F. o...
Databáze:	OpenAIRE
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