First report of a new potato disease caused by Galactomyces candidum F12 in China

文献类型： 外文期刊

第一作者： Song Su-qin

作者： Song Su-qin;Lu Zhuo;Zhu Jing;Gu Mei-ying;Tang Qi-yong;Zhang Zhi-dong;Wang Wei;Zhang Li-juan;Wang Bo;Lu Zhuo;Wang Jing

作者机构：

关键词： potato; pathogenicity; growing season; postharvest; Galactomyces candidum; tuber rot; biological characteristics

期刊名称：JOURNAL OF INTEGRATIVE AGRICULTURE （ 影响因子：2.848； 五年影响因子：2.979 ）

ISSN： 2095-3119

年卷期： 2020 年 19 卷 10 期

页码：

收录情况： SCI

摘要： Potato (Solanum tuberosum L.) is an important crop throughout the world. An uncharacterized disease has been observed on potato plants during the growing season and tubers during the storage period from Nileke County, Qitai County and other locations in Xinjiang, China. A particular fungus was consistently isolated from the infected potato plants and tubers. Based on its morphology, molecular characteristics, pathogenicity test and internal transcribed spacer (ITS) sequence, the pathogens was identified as Galactomyces candidum F12. Further study also showed that the hyphae and conidia of the pathogenic fungus grew faster as the temperature was 30 degrees C, pH was 7, soluble starch was used as optimal carbon source and yeast powder as optimal nitrogen source. In addition, 12-h continuous illumination light was beneficial to the hyphal growth, while 24-h continuous illumination was beneficial to the sporulation of the strain at 30 degrees C. To our knowledge, this is the first report of Galactomyces candidum causing leaf wilt and postharvest tuber rot on potato in China.

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