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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국미생물생명공학회 Journal of Microbiology and Biotechnology Journal of Microbiology and Biotechnology 제26권 제12호
- 발행연도
- 2016.12
- 수록면
- 2,159 - 2,170 (12page)
- DOI
- 10.4014/jmb.1607.07073
이용수
초록· 키워드
오류제보하기
Many plant-pathogenic bacteria are dependent on quorum sensing (QS) to evoke disease. In this study, the population of QS and quorum quenching (QQ) bacteria was analyzed in a consecutive monoculture system of Pseudostellaria heterophylla. The isolated QS strains were identified as Serratia marcescens with SwrIR-type QS system and exhibited a significant increase over the years of monoculture. Only one QQ strain was isolated from newly planted soil sample and was identified as Bacillus thuringiensis, which secreted lactonase to degrade QS signal molecules. Inoculation of S. marcescens to P. heterophylla root could rapidly cause wilt disease, which was alleviated by B. thuringiensis. Furthermore, the expression of lactonase encoded by the aiiA gene in S. marcescens resulted in reduction of its pathogenicity, implying that the toxic effect of S. marcescens on the seedlings was QS-regulated. Meanwhile, excess lactonase in S. marcescens led to reduction in antibacterial substances, exoenzymes, and swarming motility, which might contribute to pathogensis on the seedlings. Root exudates and root tuber extracts of P. heterophylla significantly promoted the growth of S. marcescens, whereas a slight increase of B. thuringiensis was observed in both samples. These results demonstrated that QS-regulated behaviors in S. marcescens mediated by root exudates played an important role in replanting diseases of P. heterophylla.
목차
등록된 정보가 없습니다.
참고문헌 (43)
참고문헌 신청
Andro T / 1984 / Mutants of Erwinia chrysanthemi defective in secretion of pectinase and cellulase / J. Bacteriol 160:1199~1203
Ban HF / 2009 / Transgenic Amorphophallus konjac expressing synthesized acyl-homoserine lactonase (aiiA) gene exhibit enhanced resistance to soft rot disease / Plant Cell Rep 28:1847~1855
Barnard AML / 2007 / Quorum sensing, virulence andsecondary metabolite production in plant soft-rotting bacteria / Phil. Trans. R. Soc. Lond. B Biol. Sci 362:1165~1183
Bassler BL / 1999 / How bacteria talk to each other: regulation of gene expression by quorum sensing / Curr. Opin. Microbiol 2:582~587
Bjarnsholt T / 2005 / Garlic blocks quorum sensing and promotes rapid clearing of pulmonary Pseudomonas aeruginosa infections / Microbiology 151:3873~3880
Ban HF / 2009 / Transgenic Amorphophallus konjac expressing synthesized acyl-homoserine lactonase (aiiA) gene exhibit enhanced resistance to soft rot disease / Plant Cell Rep 28:1847~1855
Barnard AML / 2007 / Quorum sensing, virulence andsecondary metabolite production in plant soft-rotting bacteria / Phil. Trans. R. Soc. Lond. B Biol. Sci 362:1165~1183
Bassler BL / 1999 / How bacteria talk to each other: regulation of gene expression by quorum sensing / Curr. Opin. Microbiol 2:582~587
Bjarnsholt T / 2005 / Garlic blocks quorum sensing and promotes rapid clearing of pulmonary Pseudomonas aeruginosa infections / Microbiology 151:3873~3880
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