Sucrose assimilation and the role of sucrose transporters in plant wound response
Sucrose assimilation and the role of sucrose transporters in plant wound response
复制标题
DOI：
10.4314/ajb.v7i25.59679
复制
发表时间：
2008
影响因子：
--
通讯作者：
O. Ibraheem;R. M. Hove;G. Bradley
中科院分区：
文献类型：
--
作者：
O. Ibraheem;R. M. Hove;G. Bradley
植物细胞通常受到各种损伤，如机械损伤和食草动物损伤。创伤是对所有生物体生存的持续威胁，并且由机械或草食动物创伤引起的开放性创伤是病原体的潜在感染部位，因此在创伤部位的防御基因的表达是抵抗机会性病原体的屏障。多细胞真核生物细胞中的损伤导致基因阻遏的显著变化，这些基因阻遏有助于细胞防御和修复。细胞代谢的突然变化和这些受伤组织或细胞的额外代谢要求只能通过增加利用蔗糖形式的外源性碳水化合物来满足。蔗糖转运蛋白参与从质外体细胞输入蔗糖对于细胞代谢需要以及对于激活邻近受损组织或细胞的防御反应的能量和碳需求将具有重要意义。
Plant cells are commonly exposed to a variety of injuries such as mechanical and herbivore wounding. Wounding is a continual threat to the survival of all organisms and an open wound caused by mechanical or herbivore wounding is a potential infection site for pathogens, thus expression of defense genes at the wound site is a barrier against opportunistic pathogens. Wounding in multicellular eukaryote cells result in marked changes in gene repression that contribute to cell defense and repairs. The sudden changes in cellular metabolism and additional metabolism requirements for these wounded tissues or cells can only be met by an increased utilization of exogenously supplied carbohydrate in the form of sucrose. Sucrose transporters’ involvement in the import of sucrose from the apoplastic cells will be of great significance for the cellular metabolic needs, and also for energy and carbon requirements for the activation of defense responses of the adjacent injured tissues or cells.