Farmer Edward E, Alméras Emmanuelle, Krishnamurthy Venkatesh
Gene Expression Laboratory, Plant Molecular Biology, 1015 Lausanne, Switzerland.
Curr Opin Plant Biol. 2003 Aug;6(4):372-8. doi: 10.1016/s1369-5266(03)00045-1.
The vigorous production of oxygenated fatty acids (oxylipins) is a characteristic response to pathogenesis and herbivory, and is often accompanied by the substantial release of small and reactive lipid-fragmentation products. Some oxylipins, most notably those of the jasmonate family, have key roles as potent regulators. Recent advances have been made in understanding oxylipin-regulated signal transduction in response to attack. Much jasmonate signaling takes place via a genetically defined signal network that is linked to the ethylene, auxin, and salicylic acid signal pathways, but a second aspect of jasmonate signaling is emerging. Some jasmonates and several newly discovered cyclopentenone lipids can activate or repress gene expression through the activities of a conserved electrophilic atom group.
氧化脂肪酸(氧脂素)的大量产生是对发病机制和食草作用的一种典型反应,并且常常伴随着小的活性脂质碎片产物的大量释放。一些氧脂素,最显著的是茉莉酸家族的那些氧脂素,作为强效调节剂发挥关键作用。在理解氧脂素调节的针对攻击的信号转导方面已取得了最新进展。许多茉莉酸信号传导是通过一个与乙烯、生长素和水杨酸信号通路相联系的遗传学定义的信号网络发生的,但茉莉酸信号传导的第二个方面正在显现出来。一些茉莉酸和几种新发现的环戊烯酮脂质可以通过一个保守的亲电原子基团的活性来激活或抑制基因表达。