《植物生理学报》 2015, 51(10): 1557-1566

UV-B辐射增强对植物–病原菌互作体系的影响及评价

李元, 李想, 何永美, 夏杨, 祖艳群^∗

云南农业大学资源与环境学院, 昆明650201

通信作者：祖艳群；E-mail: zuyanqun@ynau.edu.cn；Tel: 0871-65227550

摘　要：

臭氧空洞导致地表UV-B辐射增强, 影响了植物–病原菌互作体系的生理生化过程与特征, 主要有: UV-B辐射诱导病原菌形成防御体系, 影响其生长繁殖, 改变了病原菌的致病性; UV-B辐射增强诱导植物形成形态结构和生理生化防御, 改变植物的抗病性, 进而影响植物病害的发生。利用病情进展曲线下面积(AUDPC), 通过计算UV-B辐射对植物病害发生的综合影响因子, 评价UV-B辐射对植物–病原菌互作体系影响程度。

关键词：UV-B辐射; 响应; 抗病性; 致病性; 病害; 评价

收稿：2015-07-13   修定：2015-10-04

资助：国家自然科学基金(31460141和41205113)和云南农业大学研究生科技创新项目(2015ykc35)。

Effect and Evaluation of Enhanced UV-B Radiation on Interactions between Plant and Pathogen

LI Yuan, LI Xiang, HE Yong-Mei, XIA Yang, ZU Yan-Qun^*

College of Resources and Environment, Yunnan Agricultural University, Kunming 650201, China

Corresponding author: ZU Yan-Qun; E-mail: zuyanqun@ynau.edu.cn; Tel: 0871-65227550

Abstract:

Enhanced UV-B radiation caused by the hole in the ozone layer reaches the surface, influences the physiological and biochemical processes and characteristics of plant and pathogen interaction system. The effect of UV-B radiation on the relationship of pathogens and their host plants were: UV-B radiation changes the pathogenicity of the pathogen by inducing pathogen defense mechanism, and affected the growth and reproduction; enhanced UV-B radiation changes the plant morphological structure and induces physiological and biochemical defense, affects plant resistance and then the incidence of plant diseases. The influence of the UV-B radiation towards the interactive system of plant and pathogen could be evaluated by calculating the comprehensive influences from the case that the UV-B radiation causes the plant disease, according to area under disease progress curve (AUDPC).

Key words: UV-B radiation; response; resistance; pathogenicity; disease; evaluation