Kumar Pawan, Ginzberg Idit
Institute of Plant Sciences, Agricultural Research Organization, Volcani Institute, 68 HaMacabim Road, P.O. Box 15159, Rishon LeZion 7505101, Israel.
Plants (Basel). 2022 Aug 12;11(16):2099. doi: 10.3390/plants11162099.
The periderm is a corky tissue that replaces the epidermis when the latter is damaged, and is critical for preventing pathogen invasion and water loss. The periderm is formed through the meristematic activity of phellogen cells (cork cambium). The potato skin (phellem cells) composes the outer layers of the tuber periderm and is a model for studying cork development. Early in tuber development and following tuber expansion, the phellogen becomes active and produces the skin. New skin layers are continuously added by division of the phellogen cells until tuber maturation. Some physiological disorders of the potato tuber are related to abnormal development of the skin, including skinning injuries and russeting of smooth-skinned potatoes. Thus, characterizing the potato periderm contributes to modeling cork development in plants and helps to resolve critical agricultural problems. Here, we summarize the data available on potato periderm formation, highlighting tissue characteristics rather than the suberization processes.
周皮是一种木栓质组织，当表皮受损时会取代表皮，对于防止病原体入侵和水分流失至关重要。周皮通过木栓形成层细胞（木栓形成层）的分生组织活动形成。马铃薯皮（木栓细胞）构成块茎周皮的外层，是研究木栓发育的模型。在块茎发育早期及块茎膨大后，木栓形成层变得活跃并产生外皮。木栓形成层细胞不断分裂，持续添加新的皮层，直至块茎成熟。马铃薯块茎的一些生理病害与外皮的异常发育有关，包括去皮损伤和光滑皮马铃薯的糙皮现象。因此，对马铃薯周皮进行表征有助于构建植物木栓发育模型，并有助于解决关键的农业问题。在此，我们总结了关于马铃薯周皮形成的现有数据，重点突出组织特征而非栓化过程。
