Muyocopronales » Muyocopronaceae » Pseudopalawania

Pseudopalawania siamensis

Pseudopalawania siamensis Mapook & K.D. Hyde, in Mapook et al., Biomolecules 10 (no. 569): 12 (2020).

           Index Fungorum number: IF 834935; Facesoffungi number: FoF11970, Fig. 1

Description: see Mapook et al. (2020).

Material considered: see Mapook et al. (2020).

Fig. 1 Pseudopalawania siamensis (MFLU 20-0353, holotype, modified from Fig. 3 in Mapook et al. 2020). a Appearance of ascomata on substrate. b Squash mount of ascomata. c Section of ascoma. d Pseudoparaphyses. e, f Asci. g–i Ascospores. Scale bars: a = 500 μm, b, c = 100 μm, d, g–i = 10 μm, e, f = 50 µm.

Importance and distribution

Pseudopalawania produces polyketide-derived secondary metabolites which have antimicrobial and cytotoxic activities. These compounds are bistetrahydroxanthone, pseudopalawanone, dimeric derivatives 4,4′-secalonic acid D and penicillixanthone A, monomeric tetrahydroxanthone paecilin B, benzophenone, cephalanone F (Mapook et al. 2020). Pseudopalawania comprises only one species known on dead rachis of Caryota sp. (Arecaceae) in Asia (Thailand).

 

Reference

Mapook A, Macabeo APG, Thongbai B, Hyde KD, Stadler M. 2020 – Polyketide-Derived Secondary Metabolites from a Dothideomycetes Fungus, Pseudopalawania siamensis gen. et sp. nov., (Muyocopronales) with Antimicrobial and Cytotoxic Activities. Biomolecules 10, 569. doi: 10.3390/biom10040569

 

 

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