인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2010.1
- 수록면
- 766 - 773 (8page)
이용수
초록· 키워드
Bacillus subtilis AH18 and B. licheniformis K11 are multi-functional plant growth-promoting rhizobacteria (PGPR) that promote growth of red peppers and suppress phytophtora blight caused by Phytophtora capsici. A formulation of the two Bacillus strains was developed by producing heat-shocked endospores that had increased heat resistance. For large-scale cultivation in an 8-L jar fermentor, optimal culture conditions were pH 6.8, fermentation temperature of 30, and agitation speed of 180 rpm, with antifoaming agents added at a ventilation condition of 0.8 vvm. Induction of vegetative growth was achieved using $5.0{\times}10{-6}\;M$ dipicolinic acid and $7.0{\times}10^{-4}\;M$ $CaCl_2$. The subsequent large-scale cultivation produced viable cell numbers of $10^9$ colony forming units/mL. High and low temperature stability tests of pilot products subjected to extreme storage conditions in accordance with thermal stability test standards revealed that storage for up to three years was possible without adverse effects. The combined use of two Bacillus microbial agents in vivo synergistically suppressed phytophthora blight, even following storage of the bacterial formulation at $54^{\circ}C$ for 6 weeks. In field tests involving a phytophthora blight outbreak in red pepper, 40% of untreated peppers died, whereas 80% of peppers treated with the bacterial formulation survived for 65 days. The results indicate the potential of the B. subtilis AH18 and B. licheniformis K11 co-treatment for organic pepper farming.
#Bacillus
#biological control
#formulation
#plant growth-promoting rbizobacteria
#Phytophthora blight
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