First Inventory of Fungi in Symptomless and Symptomatic Chinese Mesona Indicates Phytopathological Threat

Plant Disease
Chung-Wei HsiehRoland Kirschner

Abstract

Chinese mesona (Platostoma palustre) plays an important role as special crop in Southeast Asia and Taiwan for the production of herbal tea, grass jelly, and further processed food. In order to assess the potential threat of fungi to Chinese mesona, we surveyed isolates from symptomless plants in the area of mesona production, as well as from leaf spots of potted plants in a garden shop and a plantation in a botanical garden in Taiwan. From leaves, stems, and roots of 15 symptomless plants sampled at five collection events over two years, 154 isolates from 810 surface-sterilized plant fragments were obtained and identified based on DNA sequence data of the internal transcribed spacer region, and partially of the β-tubulin and histone H3 genes. The most common species belonged to the genera Cercospora, Colletotrichum, and Fusarium and were considered to be potential plant pathogens. Latent pathogenicity was confirmed by an infection experiment with an endophytic strain of Corynespora cassiicola. Observation of leaf spot disease associated with Cercospora kikuchii suggested pathogenicity of this fungus, which was also isolated as an endophyte from symptomless leaves. We hypothesize that the most common endophytic fungi are latent ...Continue Reading

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Citations

Feb 20, 2021·World Journal of Microbiology & Biotechnology·Prassan ChoudharyAnil Kumar Saxena
Aug 27, 2021·EFSA Journal·UNKNOWN EFSA Panel on Plant Health (PLH)Philippe Lucien Reignault

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