Key Laboratory of Marine Biotechnology of Zhejiang Province, Ningbo University, Ningbo, Zhejiang, 315211, China.
Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California, La Jolla, San Diego, CA, 92093, USA.
BMC Plant Biol. 2019 Jan 22;19(1):37. doi: 10.1186/s12870-019-1642-0.
Short chain oxylipins in plants as the main volatile organic carbon have been speculated to playing an important role for plant innate immunity, however, not yet intensively studied and far away established as the fully recognized algae defense signals.
The production of 1-octen-3-ol is self-amplified via the fatty acid-oxylipin metabolic cycle through positive feedback loop. Production of 1-octen-3-ol may act as a messenger that induces P. haitanensis to be in a "primed" state and ready for defense by upregulating the synthesis of methyl jasmonic acid, indole-3-acetic acid, and gibberellin A3. Production of these oxylipins also adjust the redox state in cells, resulting in host defense activation.
We provide the first demonstration that 1-octen-3-ol from P. haitanensis, can act as a self-stimulating community messenger. The multiple effects of 1-octen-3-ol may explain why P. haitanensis, a very ancient lineage within plant kingdom, thrives in the niche of intertidal zones.
植物中的短链氧化脂类作为主要的挥发性有机碳，被推测在植物先天免疫中发挥着重要作用，但尚未得到深入研究，远未被确立为完全公认的藻类防御信号。
通过脂肪酸氧化脂代谢循环中的正反馈环，1-辛烯-3-醇的产生是自我放大的。1-辛烯-3-醇的产生可能作为一种信使，通过上调甲基茉莉酸、吲哚-3-乙酸和赤霉素 A3 的合成，使 P. haitanensis 处于“预备”状态并准备防御。这些氧化脂类的产生也会调节细胞中的氧化还原状态，从而激活宿主防御。
我们首次证明，来自 P. haitanensis 的 1-辛烯-3-醇可以作为自我刺激的群落信使。1-辛烯-3-醇的多种作用可以解释为什么 P. haitanensis 作为植物王国中非常古老的谱系，能够在潮间带的小生境中茁壮成长。
