摘要
杨树溃疡病菌（ Ｄｏｔｈｉｏｒｅｌｌａ ｇｒｅｇａｒｉａ） 及其菌丝体提取物和培养滤液都能诱导杨树细胞壁富含羟脯氨酸糖蛋白（ ＨＲＧＰ） 和木质素的积累，但其诱导的速度和强度在抗病树种和感病树种间有明显差异。毛白杨（ 抗病） 这２ 种物质不仅积累的速度快，且积累的幅度也远大于北京杨（ 感病） 。在病原菌侵染和诱导处理中，杨树细胞壁的ＨＲＧＰ 积累与木质素的沉积在积累的量上和时间进程上都明显相吻合。这在一定程度上表明ＨＲＧＰ 和木质素与杨树对溃疡病的抗性有关，是其抗病反应因素之一。
Not only pathogen Dothiorella gregaria but also its mycelium extract and culture filtrate could induce the accumulation of hydroxyproline-rich glycoprotein (HRGP) and lignin in cell wall of poplar callus. However, the total amount and the rate of accumulation varied with the resistance of species. The accumulation of HRGP and lignin in resistant species Populus tomentosa Carr. were faster and greater in comparison with those in susceptible species Populus beijingensis Hsu. Further more, the accumulation of the HRGP in cell wall coincided with the accumulation of lignin. These results indicated that the accumulation of HRGP and lignin in cell wall might be relevant to the resistant reaction in cell to poplar canker. Therefore, it was considered as a defence mechanism of host.
出处
《植物病理学报》
CAS
CSCD
北大核心
1999年第2期151-156,共6页
Acta Phytopathologica Sinica
基金
国家自然科学基金
