Yu, Xiaoyan Li, Zhihua Zhang, Jing Guo, Lifeng Wang, Xiangjing Zhao, Junwei Xiang, Wensheng
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Plant disease
In August 2020-2021, symptoms of leaf spot were observed in luffa (Luffa cylindrical) fields in Qingdao city, Shandong Province. In all the 10 fields investigated, leaf spot occurred. The incidence (% luffa plants with symptoms from a defined number of plants assessed) was 35 to 60%. Early symptoms of infected leaves were small and irregular chloro...
Feng, Xuewen Baumgartner, Kendra Dubrovsky, Svetlana Fabritius, Anna-Liisa
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Plant disease
In October 2018, symptoms of leaf necrosis, wilted shoots, and stunted growth were observed on the upper portion of the 7-month-old cannabis (Cannabis sativa L.) plants in Mendocino County, California, U.S.A. Foliar symptoms were followed by a rapid death of the plants within 24 hours. Out of 200 affected plants, 80% (160/200) were symptomatic. All...
Shi, Xiaojing Wang, Huajie Yuan, Hongyu Li, Mengke Guo, Chunyan Yao, Yue
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Plant disease
As a commonly traditional Chinese medicine, the perennial herb Dangshen (Codonopsis pilosula) has superior curative effects including regulating immunity, strengthening the spleen, and tonifying lungs (Bai et al. 2020). To imitate natural ecological conditions, plants were grown on hillside fields with stems prostrate on the ground, tangle-up with ...
Melgarejo, Tomas A Chen, Li-Fang Rojas, Maria J Schilder, Annemiek Gilbertson, Robert
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Plant disease
Interest in industrial hemp (Cannabis sativa) as a potential crop led to establishment of commercial fields in a number of counties in California in 2019 and 2020. Plants in these fields developed different types of virus-like symptoms. The most prevalent type was stunted and bushy plants with distorted, upcurled and yellowed leaves which were simi...
Huang, Rong Gui, Qing Zhang, Yujie Sun, Wenxiu Tang, Lihua Huang, SuiPing Guo, Tangxun Li, Qili Mo, Jianyou Huang, Huiye
...
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Plant disease
Pearl plum (Prunus salicina Lindl.) is mainly cultivated in Tian'e County in Guangxi Province, southern China. Anthracnose is a devastating disease on pearl plum, causing extensive leaf blight. Diseased leaves were sampled from 21 orchards in Tian'e County. Isolates were first screened for ones resembling Colletotrichum, and 21 representative isola...
Chen, Yuh-Kun Shih, Pei-Jung Chao, Hung-Yu
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Plant disease
Wax gourd (Benincasa hispida) is a popular cucurbitaceous summer crop used for culinary purposes, confectionery, and refreshing drinks in Asia. During a field survey for cucurbit viral diseases at Beidou, Changhua in May 2017, B. hispida plants with symptoms of mosaic, chlorosis and leaf curl were found. Because more than 90% of plants showed leaf ...
Zhang, Yu Li, Xue Xing, Shijun Ren, Huan Yang, Jing Huang, Qiong
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Plant disease
Pear (Pyrus pyrifolia (Burm.f.) Nakai) is widely planted in China and plays a key role in economy. In the autumn of 2016, five pear fruits showing symptoms of brown rot (Fig. 1A) were found in a Suancun farmer market in Kunming, Yunnan Province, China (25°02' N; 102°42' E). The incidence of this disease in postharvest pear fruits ranged from 2 % to...
Xi, Yimin Wang, Sheng-Jie Wang, Shengkun Qin, Fangcuo Meng, Sen Lu, Junkun
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Plant disease
Taxillus chinensis (DC.) Danser is a hemiparasitic shrub, widespread in Southern China (Fu et al., 2001). T. chinensis can parasitize a wide range of species (e.g., Camellia spp., Ficus virens and Osmanthus fragrans), which obviously suppressed host growth by robbing nutrient and water through haustorium, causing considerable tree damage. During fi...
Tseng, Yi-Wen Chang, Ho-Hsiung Chang, Chung Jan Jan, Fuh-Jyh
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Plant disease
Murraya exotica L., commonly known as orange jasmine, is an evergreen shrub belonging to the Rutaceae family. It has long been used as traditional Chinese medicine for treating abdominal pain, toothache, scabies, and other disorders (Liu et al. 2018). M. exotica is widely grown as a garden bush in Taiwan. A prokaryotic pathogen, 'Candidatus Liberib...
Detranaltes, Christopher Saldanha, Meghna Scofield, Steven R Cai, Guohong
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Plant disease
In the summer of 2020, 127 soybean [Glycine max (L.) Merr] seedlings (V1-V3 stage) with reduced growth vigor were sampled as part of a bulk collection of seedling pathogens from Purdue's Agronomy Center for Research and Education in West Lafayette, Indiana. After rinsing off soil, one plant displayed prominent necrotic lesions on both cotyledons an...