Infection Characteristics and Physical Prevention Strategy of Panax notoginseng Round Spot Disease Caused by Mycocentrospora acerina
Autor: | K. Yang, H. L. Wang, C. Ye, Z. H. Wang, K. H. Ye, S. Zhang, H. P. Huang, Z. X. Wei, S. S. Zhu, Y. Y. Zhu, L. W. Guo, X. H. He |
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Rok vydání: | 2022 |
Předmět: | |
Zdroj: | Plant Disease. 106:2607-2617 |
ISSN: | 1943-7692 0191-2917 |
DOI: | 10.1094/pdis-01-22-0087-re |
Popis: | Panax notoginseng round spot disease (PRSD), caused by Mycocentrospora acerina, is the main leaf disease occurring in cultured P. notoginseng. Aiming to find a safe and efficient control method for PRSD, we studied the disease characteristics of PRSD and the optimal growth conditions of M. acerina and evaluated the efficacy of rain-shelter cultivation in PRSD control. Moreover, we described M. acerina based on morphological characterization and molecular analyses (ITS, ACT, LSU, and TEF-1α). The optimum temperature for M. acerina conidial germination was found to be 14 to 22°C. Furthermore, leaf surface wetness for at least 4 h is required for conidial germination, and conidia can successfully infect P. notoginseng when the leaf wetness lasts for more than 8 h. Additionally, rainwater splashing determines the conidial transfection distance, which is less than 2 m. Finally, our study revealed that rain-shelter cultivation is an effective and simple physical prevention strategy to control PRSD, with an average efficacy of up to 100%. |
Databáze: | OpenAIRE |
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