期刊
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
卷 14, 期 5, 页码 9803-9819出版社
MDPI
DOI: 10.3390/ijms14059803
关键词
plant growth-promoting rhizobacteria (PGPR); induced resistance (ISR); systemic acquired resistance (SAR); salicylic acid (SA); jasmonic acid
资金
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2010-0011655]
- Industrial Source Technology Development Program of the Ministry of Knowledge Economy of Korea [10035386]
- Next-Generation BioGreen 21 Program (SSAC grant) [PJ009524]
- KRIBB initiative program, S. Korea
- Korea Evaluation Institute of Industrial Technology (KEIT) [10035386] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2010-0011655] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Systemic acquired resistance (SAR) is a plant self-defense mechanism against a broad-range of pathogens and insect pests. Among chemical SAR triggers, plant and bacterial volatiles are promising candidates for use in pest management, as these volatiles are highly effective, inexpensive, and can be employed at relatively low concentrations compared with agrochemicals. However, such volatiles have some drawbacks, including the high evaporation rate of these compounds after application in the open field, their negative effects on plant growth, and their inconsistent levels of effectiveness. Here, we demonstrate the effectiveness of volatile organic compound (VOC)-mediated induced resistance against both the bacterial angular leaf spot pathogen, Pseudononas syringae pv. lachrymans, and the sucking insect aphid, Myzus persicae, in the open field. Using the VOCs 3-pentanol and 2-butanone where fruit yields increased gave unexpectedly, a significant increase in the number of ladybird beetles, Coccinella septempunctata, a natural enemy of aphids. The defense-related gene CsLOX was induced by VOC treatment, indicating that triggering the oxylipin pathway in response to the emission of green leaf volatiles can recruit the natural enemy of aphids. These results demonstrate that VOCs may help prevent plant disease and insect damage by eliciting induced resistance, even in open fields.
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