文献类型：期刊文献

中文题名：红海榄赤斑病病原菌鉴定及其生物学特性研究

英文题名：Identification and biological characteristics of Rhizophora stylosa leaf spot caused by Pestalotiopsis versicolor

作者：张小媛[1];何红[1];胡汉桥[1];欧雄常[1];柳凤[1];李信申[1]

机构：[1]广东海洋大学农学院,湛江524088

年份：2009

卷号：39

期号：6

起止页码：584

中文期刊名：植物病理学报

外文期刊名：Acta Phytopathologica Sinica

收录：CSTPCD、、CSCD2011_2012、北大核心2008、北大核心、CSCD

基金：广东省自然科学基金项目(05011780);广东省科技计划(2007A020200006-13);教育部科学技术研究重点项目(206106)

语种：中文

中文关键词：红海榄;异色拟盘多毛孢;病原鉴定;生物学特性

外文关键词：Rhizophora stylosa; Pestalotiopsis versicolor; pathogen identification; biological characteristics;

中文摘要：本文对来自红海榄(Rhizophora stylosa)赤斑病同一病斑上获得的2个菌株PⅠ-1和PⅡ-3进行了鉴定和生物学特性研究。结果表明,PⅡ-3菌株的致病力比PⅠ-1的稍强;2个菌株均具有一定的寄主专化性。经形态特征观察与rDNA-ITS序列分析,2个菌株均鉴定为异色拟盘多毛孢(Pestalotiopsis versicolor)。生物学特性测定结果表明,温度、pH值和光照对2个菌株菌丝生长及孢子萌发的影响差异不大,生长温度均为10～32℃(最适25℃),pH值为3.0～10.9(最适4.0);孢子萌发温度均为10～35℃(最适25～28℃),pH值为2.5～8.0(最适3.0);黑暗条件有利于2个菌株菌丝生长和孢子萌发。但2个菌株的产孢特性存在明显差异,其中PⅠ-1产孢的最适温度为28℃而PⅡ-3为20℃;PⅠ-1产孢的最适pH值为5.1而PⅡ-3为9.0;PⅠ-1产孢对光照不敏感,而PⅡ-3在黑暗条件下几乎不产孢。另外,在相似条件下,PⅠ-1产孢量比PⅡ-3大,而PⅡ-3菌丝生长速度比PⅠ-1快,孢子萌发率也比PⅠ-1高。由此可见,2个菌株PⅠ-1和PⅡ-3虽属于同一个种,但某些生物学特性存在一定的差异。

外文摘要：The identification and the biological characteristics of the strains PⅠ-1 and PⅡ-3 isolated from the same leaf spot of Rhizophora stylosa were studied.The pathogenicity of PⅡ-3 was stronger than that of PⅠ-1 and their hosts were special to a certain extent.The two pathogenic strains were all identified as Pestalotiopsis versicolor based on the morphological characters as well as ribosomal DNA-ITS sequences.The biological characteristics of the two strains showed that the effects of temperature,pH and light ...