福建农林大学学报（自然科学版）2013，Vol.42Issue(1)：18-22,5.
福建坛紫菜赤腐病的病程及病原鉴定
Infection process and pathogen identification of red rot disease in Porphyra haitanensis from Fujian
摘要
Abstract
Different samples of Porphyra haitanensis were collected from Fuding, Xiapu, Quanzhou and Jinjiang areas respectively in Fujian Province from October, 2011 to February, 2012. The development and characteristics of disease were recorded, and bi-flagellate zoospores, sporangium, antheridium and archegonivun were found. The results of observation indicated that the symptoms of rot on Porphyra haitanensis thalli was similar to Pythilum porphyrae on Porphyra yezoensis. The mycelia strain FM1 was isolated from diseased thalli and maintained on corn-meal seawater agar ( CMSA). The artificial infection experiment displayed that the experimental thalli was rotten like the thalli collected from the sea field, which meant strain FM1 was pathogen. According to analysis of the ITS rDNA ( contained 5.8S) , strain FM1 was highly similar to Pythilum porphyrae (99% ). Combining morphology with molecular methods, this study revealed that Pythilum porphyrae was the pathogen which caused the rot of Porphyra haitanensis, the disease was called red rot disease.关键词
坛紫菜/赤腐病/紫菜腐霉/ITSKey words
Porphyra haitanensis/ red rot disease/ Pythilum porphyrae/ ITS分类
农业科技引用本文复制引用
刘一萌,马家海,文茜..福建坛紫菜赤腐病的病程及病原鉴定[J].福建农林大学学报（自然科学版）,2013,42(1):18-22,5.基金项目
公益性行业(农业部)科研专项(200903030). （农业部）
