Solanoeclepin C, a root-secreted molecule converted by rhizosphere microbes to hatching factors for potato cyst nematodes
ジャガイモの根に寄生するジャガイモシストセンチュウの雌成虫（黄色の丸い粒。直径約0.7mm）
Joint press release (in Japanese)by Kobe University, Institute of Physical and Chemical Research, National Agriculture and Food Research Organization (NARO) and Hokkaido University
Summary
- Eclepins are root-secreted compounds that induce the hatching of cyst nematodes. Solanoeclepin A (SEA) and B (SEB) have been isolated as potent hatching factors for potato cyst nematodes (PCNs). SEB is biosynthesized in roots, released into the rhizosphere, and converted into SEA by soil microorganisms. However, given that SEB and SEA exhibit comparable hatching-inducing activity toward PCNs, the ecological significance of microbial solanoeclepin metabolism in eclepin-mediated communication remains unclear.
- In this study, we identified solanoeclepin C (SEC), a previously unrecognized solanoeclepin secreted by tomato and potato roots. Structural analysis revealed that SEC is an acetylated derivative of SEB. Soil incubation experiments demonstrated that SEC is converted into SEB and subsequently into SEA. SEC exhibits 10 000-fold lower hatching-inducing activity than SEA.
- Gene expression analysis in hydroponically grown tomatoes showed that solanoeclepin biosynthesis is upregulated under nitrogen and phosphorus deficiencies, with nitrogen starvation having the strongest effect.
- Our results demonstrate that ….
Read the original article on New Phytologist
Article inforamation
Ryota Akiyama, Yui Kawano, Kosuke Shimizu, Soichiro Makino, Karen Akanuma, Haru Nagatomo,
Masami Yokota Hirai, Yukihiro Sugimoto, Atsuhiko Kushida, Keiji Tanino, Masaharu Mizutani, Solanoeclepin C, a root-secreted molecule converted by rhizosphere microbes to hatching factors for potato cyst nematodes, New Phytologist, 26 May 2025
DOI：10.1111/nph.70252
