摘要
病程相关蛋白(pathogenesis-related proteins,PR蛋白)是植物响应胁迫的重要功能蛋白,在巴西橡胶树(Hevea brasiliensis)中具有多重生物学作用。本文系统综述了橡胶树PR蛋白的研究进展,重点探讨其在抗逆机制、乳管堵塞及过敏原性方面的功能特性,特别关注了PR蛋白与乳管堵塞的重要关系。PR蛋白通过复杂的分子网络参与橡胶树的防御反应,可能通过乳管堵塞过程影响胶乳产量;部分PR蛋白具有较强的过敏原性。PR蛋白的转基因研究已取得初步进展,但需进一步优化表达调控策略以平衡抗逆性、产量和过敏原性等性状。未来研究应加强PR蛋白作用机制的解析,特别是深入探究几丁质酶和β-1,3-葡聚糖酶这2种病程相关蛋白的表达水平与橡胶产量之间的关联性,同时重视对PR-14等尚未充分研究的蛋白类别的功能研究,开发精准的分子育种技术,为橡胶树品种改良提供理论依据和技术支撑。
Pathogenesis-related(PR)proteins are crucial functional proteins in plants responding to stress,exhibiting multiple biological roles in rubber trees(Hevea brasiliensis).This article systematically reviewed recent advances in PR protein research in rubber trees,with emphasis on the functional characteristics in stress resistance mechanisms,laticifer plugging,and allergenicity,while highlighting the critical relationship between PR proteins and laticifer plugging.PR proteins participate in defense responses against stresses through complex molecular networks,potentially influencing latex yield via laticifer plugging processes.Some PR proteins exhibit strong allergenic properties.Although transgenic studies of PR proteins have achieved preliminary progress,further optimization of expression regulation strategies is required to balance stress resistance,yield,and allergenicity.Future research should prioritize elucidating the mechanistic roles of PR proteins,especially investigating how the expression levels of pathogenesis-related proteins(particularly chitinases and β-1,3-glucanases)correlate with rubber productivity.Concurrently,functional exploration of understudied PR protein categories like PR-14 warrants attention.Developing precise molecular breeding technologies based on these findings will provide both theoretical foundations and technical support for rubber tree variety improvement.
作者
代龙军
刘明洋
DAI Longjun;LIU Mingyang(Key Laboratory of Biology and Genetic Resources of Rubber Tree,Ministry of Agriculture and Rural Affairs/State Key Laboratory Incubation Base for Cultivation&Physiology of Tropical Crops/Rubber Research Institute,Chinese Academy of Tropical Agricultural Sciences,Haikou,Hainan 571101,China)
出处
《热带作物学报》
北大核心
2025年第10期2287-2298,共12页
Chinese Journal of Tropical Crops
基金
海南省自然科学基金高层次人才项目(No.322RC785)
中央级公益性科研院所基本科研业务费专项(No.1630022025004)。
关键词
巴西橡胶树
病程相关蛋白
抗逆
乳管堵塞
过敏原性
转基因育种
Hevea brasiliensis
pathogenesis-related proteins
stress resistance
laticifer plugging
allergenicity
transgenic breeding
