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Indexed by:期刊论文

Date of Publication:2007-01-01

Journal:ANNALS OF MICROBIOLOGY

Included Journals:SCIE、Scopus

Volume:57

Issue:4

Page Number:673-676

ISSN No.:1590-4261

Key Words:anti-fungal activity; endophytic bacteria; identification; isolation; Serratia marcescens; Vaccinium uliginosum.

Abstract:A strain of endophytic bacterium with a good anti-fungal ability was first isolated from Vaccinium uliginosum. It was identified as Serratia marcescens using the 16s rDNA sequence homology and through its physiological and biochemical characteristics. Through the alignment and cladistic analysis of homologous nucleotide sequences of known Serratia marcescens, it was found to be a novel subspecies of S. marcescens. An extensive suppressive spectrum of this endophytic strain of S. marcescens against plant pathogenic fungi was observed. In particular, it inhibited the growth of the causal agents of blueberry leaf spot and of other ten plant fungal pathogens. The inhibition rate, among the different fungi, ranged from 22.7-70.5%. The study indicated the potential use of this S. marcescens enophytic strain in the biological control of blueberry's leaf spot as well as many other plant diseases. To our knowledge, this was the first time that an endophytic S. marcescens was isolated from a wild blueberry in China, and may also represent a novel introduction to the world.