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

作　　者：SONG Su-qin Lü Zhuo WANG Jing ZHU Jing GU Mei-ying TANG Qi-yong ZHANG Zhi-dong WANG Wei ZHANG Lijuan WANG Bo 

机构地区：[1]Institute of Applied Microbiology,Xinjiang Academy of Agricultural Sciences/Xinjiang Key Laboratory of Special Environmental Microbiology,Urumqi 830091,P.R.China [2]School of Food Science and Pharmacy,Xinjiang Agricultural University,Urumqi 830000,P.R.China

出　　处：《Journal of Integrative Agriculture》2020年第10期2470-2476,共7页农业科学学报（英文版）

基　　金：Supported by the Basic Scientific Research Fund Project of the Public Welfare Scientific Research Institute of Xinjiang Autonomous Region,China(KY2018012,KY2019020);the Open Fund of Key Laboratory of Integrated Pest Management on Crop in Northwestern Oasis,Ministry of Agriculture and Rural Affairs,China(KFJJ202006).

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℃,pH was 7,soluble starch was used as optimal carbon source and yeast powder as optimal nitrogen source.In addition,12-h continuous ilumination light was beneficial to the hyphal growth,while 24-h continuous ilumination was beneficial to the sporulation of the strain at 30℃.To our knowledge,this is the first report of Galactomyces candidum causing leaf wilt and postharvest tuber rot on potato in China.

关 键 词：POTATO PATHOGENICITY growing season POSTHARVEST Galactomyces candidum tuber rot biological characteristics 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]