Department of Molecular Signal Processing; Leibniz Institute of Plant Biochemistry; Weinberg; Halle (Saale), Germany.
Plant Signal Behav. 2012 Oct 1;7(10):1349-53. doi: 10.4161/psb.21551. Epub 2012 Aug 20.
Jasmonates (JAs) are ubiquitously occurring signaling compounds in plants formed in response to biotic and abiotic stress as well as in development. (+)-7-iso-jasmonoyl isoleucine, the bioactive JA, is involved in most JA-dependent processes mediated by the F-box protein COI1 in a proteasome-dependent manner. However, there is an increasing number of examples, where the precursor of JA biosynthesis, cis-(+)-12-oxophytodienoic acid (OPDA) is active in a JA/COI1-independent manner. Here, we discuss those OPDA-dependent processes, thereby giving emphasis on tomato embryo development. Recent data on seed coat-generated OPDA and its role in embryo development is discussed based on biochemical and genetic evidences.
茉莉酸（JAs）是植物中普遍存在的信号化合物，它们在应对生物和非生物胁迫以及发育过程中形成。（+）-7-异茉莉酰基异亮氨酸，即生物活性 JA，参与由 F-box 蛋白 COI1 介导的大多数依赖 JA 的过程，该过程以蛋白酶体依赖性方式进行。然而，越来越多的例子表明，JA 生物合成的前体顺式-（+）-12-氧代-植二烯酸（OPDA）以 JA/COI1 非依赖性方式发挥作用。在这里，我们讨论了那些依赖 OPDA 的过程，特别强调了番茄胚胎发育。基于生化和遗传证据，讨论了种子壳产生的 OPDA 及其在胚胎发育中的作用的最新数据。
