title: Biological control of anthracnose (Colletotrichum gloeosporioides) in yam by Streptomyces sp.MJM5763.
abstract: OBJECTIVE
  To find a suitable biocontrol agent for yam anthracnose caused by Colletotrichum gloeosporioides.
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  Streptomyces sp. strain MJM5763 was effective in biocontrolling anthracnose in yam caused by C. gloeosporioides.
  
  
  CONCLUSIONS
  Streptomyces sp. MJM5763 is a potential alternative to chemical fungicides for reducing yield losses to anthracnose in yam.
authors.affiliation: Division of Bioscience and Bioinformatics, College of Natural Science, Myongji University, Yongin, South Korea.
authors.forename: S A
authors.initials: SA
authors.lastname: Palaniyandi
authors.forename: S H
authors.initials: SH
authors.lastname: Yang
authors.forename: J H
authors.initials: JH
authors.lastname: Cheng
authors.forename: L
authors.initials: L
authors.lastname: Meng
authors.forename: J-W
authors.initials: JW
authors.lastname: Suh
mesh_terms: D000898:Antibiosis; D020231:Colletotrichum / Q000254:growth & development* / Q000302:isolation & purification / Q000472:pathogenicity; D004269:DNA, Bacterial / Q000235:genetics; D027742:Dioscorea / Q000382:microbiology*; D010802:Phylogeny; D010935:Plant Diseases / Q000382:microbiology / Q000517:prevention & control*; D018515:Plant Leaves / Q000382:microbiology; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D056910:Republic of Korea; D013172:Spores, Fungal / Q000254:growth & development; D013302:Streptomyces / Q000145:classification / Q000235:genetics / Q000502:physiology*
chemical_list: D004269:DNA, Bacterial; D012336:RNA, Ribosomal, 16S