NDLI: Seasonal dynamics of Botryosphaeria dothidea infections and symptom development on apple fruits and shoots in China

Content Provider	Springer Nature Link
Author	Zhao, Xu Zhang, Gao lei Li, Bao hua Xu, Xiang ming Dong, Xiang li Wang, Cai xia Li, Gui fang
Copyright Year	2016
Abstract	Botryosphaeria dothidea is one of the most important pathogens of apple trees in China. It causes warts and cankers on shoots and fruit rot. In this study, multi-season experiments were conducted to investigate the seasonal dynamics of B. dothidea infection and symptom development on twigs and fruits of cv. Fuji through spraying and rain-splash inoculations. Fruit were most susceptible to infection from late May to mid-August. The length of the incubation period, i.e. from inoculation to the first lesion was observed, generally decreased with the age of fruit at the time of inoculation. Fruit inoculated in May–June developed visible symptoms from early August onwards, with a peak in early September. However, fruit inoculated in September developed visible symptoms within one week after inoculation. Twigs remained susceptible to infection by conidia from the initial extension stage in early May to late September. New extension shoots were most susceptible from June to mid-August and then became gradually less susceptible over time. When inoculated before the end of August, twigs developed visible lesions within the same season. In contrast, when inoculated late in the season, most lesions became visible during the subsequent season. The incubation period on twigs was shorter for inoculations conducted in June–August, with the shortest being 25 days. These results may contribute to the improvement of the management of this disease.
Starting Page	507
Ending Page	518
Page Count	12
File Format	PDF
ISSN	09291873
Journal	European Journal of Plant Pathology
Volume Number	146
Issue Number	3
e-ISSN	15738469
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-04-15
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Susceptibility Incubation period Age-related resistance Canker Fruit rot Plant Pathology Plant Sciences Ecology Agriculture Life Sciences
Content Type	Text
Resource Type	Article
Subject	Plant Science Horticulture Agronomy and Crop Science

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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