陕、豫两省苹果炭疽病病原鉴定

doi:10.3864/j.issn.0578-1752.2009.09.026

中国农业科学 ›› 2009, Vol. 42 ›› Issue (9): 3224-3229 .doi: 10.3864/j.issn.0578-1752.2009.09.026

陕、豫两省苹果炭疽病病原鉴定

张荣,王素芳,崔静秋,孙广宇

(西北农林科技大学植物保护学院)

收稿日期:2009-03-19 修回日期:2009-05-19 出版日期:2009-09-10 发布日期:2009-09-10

Identification of Pathogens Causing Apple Fruit Bitter Rot in Shaanxi and He’nan Provinces#br#

ZHANG Rong, WANG Su-fang, CUI Jing-qiu, SUN Guang-yu#br#

(西北农林科技大学植物保护学院)

Received:2009-03-19 Revised:2009-05-19 Online:2009-09-10 Published:2009-09-10

摘要/Abstract

摘要：

【目的】确定引起中国陕、豫两省苹果炭疽病的病原菌种类。【方法】对病原菌进行分离、纯化、致病性测定以及形态学鉴定、rDNA ITS区序列分析、rDNA ITS区特异引物CaInt2/ITS4扩增。【结果】自陕西、河南11个地点采集192份样本,经鉴定引起陕、豫两省苹果炭疽病的病原菌有2种,胶孢炭疽菌[Colletotrichum gloeosporioides (Penz.) Sacc.]和尖孢炭疽菌(C. acutatum J.H. Simmonds)。两种病原菌的区别主要在于分生孢子形态、菌落颜色、对引物CaInt2的特异性等。【结论】首次证实了中国苹果炭疽病可由尖孢炭疽菌(C. acutatum)引起。两种病原菌在陕、豫两省各地区均有分布,其中,胶孢炭疽菌(C. gloeosporioides)所占比例较高。

关键词: 尖孢炭疽菌')">尖孢炭疽菌, 胶孢炭疽菌, rDNA ITS序列, 多样性

Abstract:

【Objective】 Determining the possible pathogens of apple fruit bitter rot in Shaanxi and He’nan provinces of China. 【Method】 The pathogens were isolated and their pathogenicities were determined. Identification was carried out by using traditional morphological methods and sequencing of rDNA-ITS with universal primers and species-specific primer CaInt2. 【Result】 One hundred and ninety two samples of diseased apple fruits were collected from eleven locations in Shaanxi and He’nan provinces of China. Two fungal species, Colletotrichum gloeosporioides (Penz.) Sacc. and C. acutatum J.H. Simmonds were found as possible pathogens of apple fruit bitter rot in these regions. The two fungal pathogens can be distinguished on the basis of conidial morphology, colony color, growth rate and specific amplification by primers CaInt2/ITS4. 【Conclusion】 It has been confirmed that the apple fruit bitter rot in China is caused by two fungal species, Colletotrichum gloeosporioides and C. acutatum. Both species were distributed in the districts sampled, but C. gloeosporioides was more often isolated.

Key words: Colletotrichum acutatum')">Colletotrichum acutatum, Colletotrichum gloeosporioides, rDNA-ITS sequence, diversity

张荣,王素芳,崔静秋,孙广宇 . 陕、豫两省苹果炭疽病病原鉴定[J]. 中国农业科学, 2009, 42(9): 3224-3229 .

ZHANG Rong,WANG Su-fang,CUI Jing-qiu,SUN Guang-yu
. Identification of Pathogens Causing Apple Fruit Bitter Rot in Shaanxi and He’nan Provinces#br# [J]. Scientia Agricultura Sinica, 2009, 42(9): 3224-3229 .

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陕、豫两省苹果炭疽病病原鉴定

Identification of Pathogens Causing Apple Fruit Bitter Rot in Shaanxi and He’nan Provinces#br#

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