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| Monilinia fructicola on loquat: An old pathogen invading a new host |
YIN Liang-fen1, 2, ZHANG Shu-qin2, DU Juan4, WANG Xin-yu3, XU Wen-xing3, LUO Chao-xi1, 3 |
1 Key Lab of Horticultural Plant Biology, Ministry of Education/Huazhong Agricultural University, Wuhan 430070, P.R.China
2 Experimental Teaching Center of Crop Science, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R.China
3 Key Laboratory of Crop Disease Monitoring and Safety Control in Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, P.R.China
4 Key Laboratory of Oasis Agricultural Pest Management and Plant Protection Resources Utilization, College of Agriculture, Shihezi 832003, P.R.China |
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摘要
链核盘菌属真菌美澳型核果链核盘菌Monilinia fructicola是世界上许多蔷薇科果树褐腐病的病原菌。其已被报道可广泛侵染核果类果树，如桃、李、樱桃、杏和梅，仁果类果树，如苹果、梨和山楂等。枇杷虽然和苹果、梨、山楂等都属于苹果亚科枇杷属植物，但到目前为止，还没有枇杷是任何链核盘菌属真菌的寄主的相关报道。2019年6月，我们在湖北武汉的一个果园里观察到枇杷果实发生褐腐病。经过对病样进行采集，从中共获得了30个单孢菌株。通过对病菌形态特征观察结合分子生物学分析，将枇杷褐腐病的病原菌鉴定为M. fructicola。这是世界上首次报道由链核盘菌引起的枇杷褐腐病。此外，通过人工接种，我国桃褐腐病菌的三个种M. fructicola，Monilia mumecola和Monilia yunnanensis均可以在枇杷果实上形成典型的褐腐病。同时，在对桃果实进行致病性试验时，从枇杷中分离的M. fructicola和桃分离的M. fructicola表现出相当的致病力，预示在实际生产中枇杷可能被其它链核盘菌侵染，同时枇杷上的链核盘菌也可能对其它蔷薇科果树造成危害。
Abstract Monilinia fructicola has been widely reported as the causal agent of brown rot disease on many Rosaceae family fruits worldwide. It has been reported on stone fruits, e.g., peach, plum, cherry, apricot and mume; as well as pome fruits, e.g., apple, pear and hawthorn. Loquat is a member of the Eriobotrya genus in subfamily Maloideae along with apple, pear and hawthorn. So far, loquat has not been reported as the host of any Monilia species. In June 2019, brown rot symptoms were observed on loquat fruits in an orchard in Wuhan, Hubei Province, China. Thirty single spore isolates were obtained and identified as M. fructicola based on morphological characteristics and molecular analysis. This is the first report of loquat brown rot disease caused by Monilia species in the world. Furthermore, upon artificial inoculation, all three Monilia species from peach in China, i.e., M. fructicola, M. mumecola and M. yunnanensis, could cause typical brown rot disease on loquat fruits. At the same time, M. fructicola isolates from loquat showed virulence similar to those isolates from peach when the pathogenicity test was conducted on peach fruits. These results suggested that loquat could be infected by other Monilia species and that isolates from loquat also have potential to damage other Rosaceae family fruits in practice.
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Received: 28 February 2020
Accepted:
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| Fund: This work was financially supported by the earmarked fund for China Agriculture Research System (CARS-30) and the National Natural Science Foundation of China (31401686 and 31872934). |
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Corresponding Authors:
Correspondence LUO Chao-xi, Tel: +86-27-87281242, E-mail: cxluo@mail.hzau.edu.cn
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| About author: YIN Liang-fen, E-mail: yh@mail.hzau.edu.cn |
Cite this article:
YIN Liang-fen, ZHANG Shu-qin, DU Juan, WANG Xin-yu, XU Wen-xing, LUO Chao-xi .
2021.
Monilinia fructicola on loquat: An old pathogen invading a new host. Journal of Integrative Agriculture, 20(7): 2009-2014.
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