Biological control of anthracnose (Colletotrichum gloeosporioides) in yam by Streptomyces sp.MJM5763.
J Appl Microbiol
; 111(2): 443-55, 2011 Aug.
Article
in En
| MEDLINE
| ID: mdl-21714834
ABSTRACT
AIM:
To find a suitable biocontrol agent for yam anthracnose caused by Colletotrichum gloeosporioides. METHODS ANDRESULTS:
An actinobacterial strain, MJM5763, showing strong antifungal activity, multiple biocontrol and plant growth-promoting traits was isolated from a yam cultivation field in Yeoju, South Korea. Based on morphological and physiological characteristics and analysis of the 16S rDNA sequence, strain MJM5763 was identified as a novel strain of Streptomyces and was designated as Streptomyces sp. MJM5763. Treatment with MJM5763 and the crude culture filtrate extract (CCFE) was effective in suppressing anthracnose in detached yam leaves in vitro and reduced incidence and severity of anthracnose in yam plants under greenhouse conditions. The CCFE treatment was the most effective of all the treatments and reduced the anthracnose severity by 85-88% and the incidence by 79-81%, 90 days after inoculation with the pathogen. CCFE treatment was also effective under field conditions and showed a reduction of 86 and 75% of anthracnose severity and incidence, respectively.CONCLUSION:
Streptomyces sp. strain MJM5763 was effective in biocontrolling anthracnose in yam caused by C. gloeosporioides. SIGNIFICANCE AND IMPACT OF THE STUDY Streptomyces sp. MJM5763 is a potential alternative to chemical fungicides for reducing yield losses to anthracnose in yam.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Plant Diseases
/
Streptomyces
/
Colletotrichum
/
Dioscorea
/
Antibiosis
Type of study:
Prognostic_studies
Country/Region as subject:
Asia
Language:
En
Journal:
J Appl Microbiol
Journal subject:
MICROBIOLOGIA
Year:
2011
Document type:
Article
Affiliation country:
Corea del Sur