荔枝果皮对不同致病力炭疽菌侵染的结构变化差异

用两个强弱不同致病力炭疽菌株0977-19-2和09619-1-1接种无核荔枝果皮,以探明荔枝果实接种炭疽菌后的结构变化差异,明晰不同致病力炭疽菌的致病机制。结果显示,接种强致病力菌株0977-19-2后,果皮结构变化迅速,侵染1 d后菌丝即可穿过表皮细胞角质层,5 d后表皮组织内产生大量分生孢子盘和分生孢子,果皮表面凹陷处细胞消融,几无正常细胞;接种弱致病力菌株09619-1-1后的前2 d,外果皮和栅状组织几乎没有受到损害,5 d后凹陷处细胞大量消融,部分海绵组织细胞消融,果皮表面产生较多的菌丝体和少量分生孢子。表明荔枝果皮接种不同致病力胶孢炭疽菌后,果皮结构对强致病力菌株的反应迅速,寄主...

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Bibliographic Details
Published in广东农业科学 Vol. 42; no. 24; pp. 104 - 106
Main Author 张新春 彭元科 高兆银 王家保
Format Journal Article
LanguageChinese
Published 中国热带农业科学院环境与植物保护研究所,海南海口,571101 2015
Subjects
侵染
炭疽菌
结构
荔枝
荔枝
炭疽菌
侵染
结构
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ISSN1004-874X

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Summary:用两个强弱不同致病力炭疽菌株0977-19-2和09619-1-1接种无核荔枝果皮,以探明荔枝果实接种炭疽菌后的结构变化差异,明晰不同致病力炭疽菌的致病机制。结果显示,接种强致病力菌株0977-19-2后,果皮结构变化迅速,侵染1 d后菌丝即可穿过表皮细胞角质层,5 d后表皮组织内产生大量分生孢子盘和分生孢子,果皮表面凹陷处细胞消融,几无正常细胞;接种弱致病力菌株09619-1-1后的前2 d,外果皮和栅状组织几乎没有受到损害,5 d后凹陷处细胞大量消融,部分海绵组织细胞消融,果皮表面产生较多的菌丝体和少量分生孢子。表明荔枝果皮接种不同致病力胶孢炭疽菌后,果皮结构对强致病力菌株的反应迅速,寄主细胞消解、病原菌侵入、定殖和扩展的速度都明显较快。
Bibliography:44-1267/S
litchi; Colletotrichum; infection; structure
ZhANG Xin-chun, PENG Yuan-ke, GAO Zhao-yin, WANG Jia-bao （ Environmental and Plant Protection Institute ofCATAS, Haikou 571101, China ）
In order to study the structural change of litchi pericarp infected by Colletotrichum,we used two different pathogenicity of C. gloeosporioides strains,0977-19-2 with strong pathogenicity and 09619-1-1 with weaker pathogenicity,to infect ‘wuhe＇ fruits. The results showed that the structure of pericarp infected by 0977-19-2 changed rapidly, the hypha penetrated the epidermal cells after 1 day,lots of acervulus and conidiums were produced among epidermal cells after 5 days,and acervulus spreaded gradually. The depressed cell of pericarp were dissolved,and none normal cell was existed. The epicarp and palisade tissue treated by 09619-1-1,did not been damaged in 2 days. In the last day,most of cells in sunked pericarp disappeared,and part of spongy tissue cells dissolved. Mycelia and conidiospores were on pericarp. There were si
ISSN:1004-874X