期刊
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
卷 63, 期 32, 页码 7124-7133出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jafc.5b01521
关键词
salicylic acid; systemic acquired resistance; signaling pathway; chemical inhibitor
资金
- Core Research for Evolutional Science and Technology (CREST) Program of the Japan Science and Technology Agency (JST)
- JSPS [26440132]
- Grants-in-Aid for Scientific Research [26440132] Funding Source: KAKEN
Salicylic acid (SA) plays important roles in the induction of systemic acquired resistance (SAR) in plants. Determining the mechanism of SAR will extend our understanding of plant defenses against pathogens. We recently reported that PAMD is an inhibitor of SA signaling, which suppresses the expression of the pathogenesis-related PR genes and is expected to facilitate the understanding of SA signaling. However, PAMD strongly inhibits plant growth. To minimize the side effects of PAMD, we synthesized a number of PAMD derivatives, and identified compound 4 that strongly suppresses the expression of the PR genes with fewer adverse effects on plant growth than PAMD. We further showed that the adverse effects on plant growth were partially caused the stabilization of DELLA, which is also related to the pathogen responses. These results indicate that compound 4 would facilitate our understanding of SA signaling and its cross talk with other plant hormones.
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