Abstract:
The above-ground plant surface is a well-adapted tissue layer that acts as an interface between the plant and its surrounding environment. As such, its primary role is to protect against desiccation and maintain the gaseous exchange required for photosynthesis. Further, this surface layer provides a barrier against pathogens and herbivory, while attracting pollinators and agents of seed dispersal. In the context of agriculture, the plant surface is strongly linked to post-harvest crop quality and yield. The epidermal layer contains several unique cell types adapted for these functions, while the non-lignified above-ground plant organs are covered by a hydrophobic cuticular membrane. This review aims to provide an overview of the latest understanding of the molecular mechanisms underlying crop cuticle and epidermal cell formation, with focus placed on genetic elements contributing towards quality, yield, drought tolerance, herbivory defence, pathogen resistance, pollinator attraction, and sterility, while highlighting the inter-relatedness of plant surface development and traits. Potential crop improvement strategies utilizing this knowledge are outlined in the context of the recent development of new breeding techniques.
摘要:
地上植物表面是适应良好的组织层,其充当植物与其周围环境之间的界面。因此,其主要作用是防止干燥和维持光合作用所需的气体交换。Further,这个表层提供了抵抗病原体和食草动物的屏障,同时吸引传粉者和种子传播剂。在农业方面,植物表面与采后作物质量和产量密切相关。表皮层包含几种适应这些功能的独特细胞类型,而非木质化的地上植物器官被疏水性表皮膜覆盖。这篇综述旨在概述对作物表皮和表皮细胞形成的分子机制的最新认识,重点放在有助于质量的遗传因素上,产量,耐旱性,食草防御,病原体抗性,传粉媒介的吸引力和不育,同时突出了植物表面发育和性状的相互关联性。在新育种技术的最新发展背景下,概述了利用这些知识的潜在作物改良策略。