Chiang Mai Journal of Science

Print ISSN: 0125-2526 | eISSN : 2465-3845

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Ficus microcarpa (Moraceae) and Kandelia candel (Rhizophoraceae), Two New Host Records for Alternaria gaisen from Taiwan

Chada Norphanphoun, Sinang Hongsanan, Jayarama Darbhe Bhat, Chang-Hsin Kuo and Kevin David Hyde
* Author for corresponding; e-mail address: chkuo@mail.ncyu.edu.tw
Volume: Vol.48 No.6 (November 2021)
Research Article
DOI:
Received: 31 January 2021, Revised: 25 May 2021, Accepted: 1 June 2021, Published: -

Citation: Norphanphoun C., Hongsanan S., Bhat J.D., Kuo C. and Hyde K.D., Ficus microcarpa (Moraceae) and Kandelia candel (Rhizophoraceae), Two New Host Records for Alternaria gaisen from Taiwan, Chiang Mai Journal of Science, 2021; 48(6): 1478-1499.

Abstract

Mangroves grow adjacent to estuarine regions of the tropics and subtropics. Fungi cause diseases in mangroves; however, it is not clear if the diseases are unique to mangrove species or ubiquitous. In this study, we identified a species of Alternaria, a genus comprising with saprobic and pathogenic species of a large number of plants. The genus is currently divided into 28 sections based on phylogenetic and morphological evidence. Alternaria is characterized by macronematous conidiophores, sympodial, polytretic conidiogenous cells, and obclavate to obovoid, muriform conidia gradually tapering towards beaked apex. We found A. gaisen associated with leaf blight of Ficus microcarpa and leaf spots of Kandelia candel from Taiwan. Phylogenetic analysis of combined SSU, LSU, ITS, gapdh, rpb2, ef1α, Alta1, endoPG and OPA10-2 sequence data supports positioning of our isolates as A. gaisen in section Alternaria. This species was first reported from Japanese pear causing black spot disease. This is also a new host record of A. gaisen from mangroves in Taiwan.

Keywords: new host record, mangroves, microfungi, phylogenetic analyses, pleosporaceae, taxonomy

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