Nomberg Gal, Marinov Ofir, Arya Gulab Chand, Manasherova Ekaterina, Cohen Hagai
Volcani Center, Department of Vegetable and Field Crops, Institute of Plant Sciences, Agricultural Research Organization (ARO), Rishon Lezion 7505101, Israel.
Department of Plant Pathology and Microbiology, The Robert H. Smith Faculty of Agriculture, Food and Environment, The Hebrew University of Jerusalem, Rehovot 7610001, Israel.
Plants (Basel). 2022 Jan 30;11(3):392. doi: 10.3390/plants11030392.
Suberin is a natural biopolymer found in a variety of specialized tissues, including seed coat integuments, root endodermis, tree bark, potato tuber skin and the russeted and reticulated skin of fruits. The suberin polymer consists of polyaliphatic and polyphenolic domains. The former is made of very long chain fatty acids, primary alcohols and a glycerol backbone, while the latter consists of -hydroxycinnamic acid derivatives, which originate from the core phenylpropanoid pathway. In the current review, we survey the current knowledge on genes/enzymes associated with the suberin biosynthetic pathway in plants, reflecting the outcomes of considerable research efforts in the last two decades. We discuss the function of these genes/enzymes with respect to suberin aromatic and aliphatic monomer biosynthesis, suberin monomer transport, and suberin pathway regulation. We also delineate the consequences of the altered expression/accumulation of these genes/enzymes in transgenic plants.
木栓质是一种天然生物聚合物，存在于多种特殊组织中，包括种皮被膜、根内皮层、树皮、马铃薯块茎外皮以及果实的锈色和网状外皮。木栓质聚合物由多脂肪族和多酚结构域组成。前者由非常长链的脂肪酸、伯醇和甘油主链构成，而后者由源自核心苯丙烷途径的对羟基肉桂酸衍生物组成。在本综述中，我们概述了目前关于植物中与木栓质生物合成途径相关的基因/酶的知识，反映了过去二十年大量研究工作的成果。我们讨论了这些基因/酶在木栓质芳香族和脂肪族单体生物合成、木栓质单体运输以及木栓质途径调控方面的功能。我们还描述了这些基因/酶在转基因植物中表达/积累改变所产生的后果。
