头花蓼茎枯病病原的鉴定及生物学特性
Abstract
A new fungal disease of stem wilt was found on Polygonum capitatum. The isolate was obtained from diseased field sample. This study was to identify and characterize the isolate. Based on analysis of ITS, EF-1α and β-tubulin sequences, the isolate was placed in Fusarium equiseti clade in phylogenetic tree. In combination of morphological characteristics the fungal isolate was identified as F. equiseti, a new pathogen on Polygonum capitatum. To determine the optimal nutritional and cultural conditions for the pathogen, the biological characteristics test was conducted. The results showed that the optimal carbon and nitrogen sources were fructose and sodium nitrate, respectively, and the mycelia was not sensitive to light with the optimum growth temperature was at 28℃ and favorable pH value at 7, while the lethal temperature for mycelia growth was 65℃ for 10 minutes.
Key words
Polygonum capitatum /stem wilt /Fusarium equiseti /biological characteristics{{custom_keyword}} /
任静,曾桂萍,宋莉莎,赵致,李忠.头花蓼茎枯病病原的鉴定及生物学特性[J]. 植物病理学报, 2018, 48(2): 271-274 https://doi.org/10.13926/j.cnki.apps.000125
REN Jing, ZENG Gui-ping, SONG Li-sha, ZHAO Zhi, LI Zhong.Identification and biological characteristics of Polygonum capitaturn stem wilt pathogen[J]. Acta Phytopathologica Sinica, 2018, 48(2): 271-274 https://doi.org/10.13926/j.cnki.apps.000125
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脚注
{{custom_fn.content}}基金
科技部科技惠民计划项目(2013GS520101-08);贵州省药用植物繁育与种植人才基地项目(黔人领发[2013]15号);科技基础性工作专项(2014FY120100);贵州省中药材现代农业产业体系建设项目(GZCYTX2015-0202)
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