[Isolation and identification of a Streptomyces strain against ginger bacterial wilt caused by Pseudomonas solanacearum Smith].
Streptomyces SR-11 was isolated from the soil of ginger in Sichuan Province against ginger bacterial wilt caused by Pseudomonas solanacearum Smith. It had distinctively inhibitive effect on gram-positive bacterium, gram-negative bacterium and some kinds of pathogenic fungi. It's morphological, cultural physiological, biochemical characteristics, chemotaxonomy and 16S rDNA sequences analysis were studied. The substrate mycelium have no partition, the aerial mycelium are ramose; The spore-bearing filaments are spiral, the spores are oval and the surface are smooth. Cell wall type I, Sugar type C. When SR-11 is matured, the aerial mycelium are gray and the strain can give out an earthy smell. A phylogenetic tree was constructed by comparing with the published 16S rDNA sequences of the related bacteria species. In the phylogenetic tree the overall similarity value between strain SR-11 and 12 type Streptomyces sp are 96.5-98.3%.
School of Life Sciences, Sichuan University, Chengdu 610064, China.
Hong-yan
HY
Ran
Shao-rong
SR
Ge
Yong
Y
Tao
Hong
H
Jin
Shi-gui
SG
Liu
D004269:DNA, Bacterial / Q000235:genetics; D004275:DNA, Ribosomal / Q000235:genetics; D010802:Phylogeny; D010935:Plant Diseases / Q000382:microbiology; D011549:Pseudomonas / Q000502:physiology*; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D012988:Soil Microbiology; D013302:Streptomyces / Q000145:classification* / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology*
D004269:DNA, Bacterial; D004275:DNA, Ribosomal; D012336:RNA, Ribosomal, 16S