First Record of <i>Viridothelium virens</i> (Trypetheliales, Ascomycota) in the Southeast Asian Tropics

Luangsuphabool, Theerapat; Piapukiew, Jittra; Lumbsch, H. Thorsten; Sangvichien, Ek

doi:10.13158/heia.30.1.2017.317

Herzogia

2017

DOI: 10.13158/heia.30.1.2017.317

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First Record of Viridothelium virens (Trypetheliales, Ascomycota) in the Southeast Asian Tropics

Theerapat Luangsuphabool¹,

Jittra Piapukiew²,

H. Thorsten Lumbsch³

et al.

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Cited by 2 publications

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“…In 2017, the total Thai lichens were reported to be at least 1292 species and, currently, Trypetheliaceae crustose lichens were found in 44 species. [6][7][8] The genus Marcelaria, 9 especially Marcelaria cumingii, possesses dominant morphological characteristics and is an abundant source of secondary metabolites, comprising anthraquinones and xanthones. [10][11][12] Nevertheless, no chemical data on the cultured mycobiont of this species have been found.…”

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Naphthoquinones From Cultured Mycobiont of Marcelaria cumingii (Mont.) and Their Cytotoxicity

Jarupinthusophon

Luangsuphabool

Aree

et al. 2019

Natural Product Communications

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Five naphthoquinones including 4 compounds with new absolute configurations, (–)-2' S-trypethelone methyl ether (1), (–)-2' S-8-methoxytrypethelone methyl ether (2), (–)-(2' S,3' S)-4'-hydroxytrypethelone (3), and (–)-(2' S,3' R)-4'-hydroxy-8-methoxy trypethelone methyl ether (5), together with a known compound, (–)-2' S-trypethelone (4), were isolated from cultured mycobiont of Marcelaria cumingii. These compounds were structurally elucidated by high-resolution mass spectra, nuclear magnetic resonance, circular dichroism, optical rotation, and single-crystal X-ray analysis. The cytotoxicity against several cancer cell lines of the isolated compounds were tested. (–)-2' S-Trypethelone methyl ether (1) showed selective inhibition of HCT116 and A549 cell lines with half-maximal inhibitory concentration values of 0.32 ± 0.03 and 1.05 ± 0.12 µM, respectively. The binding conformation and molecular interactions including the effect of substituent modification were also revealed.

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Naphthoquinones From Cultured Mycobiont of Marcelaria cumingii (Mont.) and Their Cytotoxicity

Jarupinthusophon

Luangsuphabool

Aree

et al. 2019

Natural Product Communications

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A new checklist of lichenized fungi occurring in Thailand

Buaruang¹,

Boonpragob²,

Mongkolsuk³

et al. 2017

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CHECKLISTKawinnat Buaruang et al. / MycoKeys 23: 1-91 (2017) 2 Abstract A new revised checklist of lichenized fungi in Thailand is presented, including 1,292 species. Recent work on the taxonomy of these organisms in Thailand resulted in an enormous increase in our knowledge of the lichen biota of the country -the current checklist includes more than twice as many species as the previous catalogue published 15 years ago -and phylogenetic studies resulted in numerous changes in the generic classification of lichenized fungi. Hence, a new checklist is here presented summarizing the current knowledge of lichens in Thailand. Six new records are reported, viz. Acanthothecis salazinica, Bactrospora metabola, Buellia parastata, Diploschistes cinereocaesius, Rolfidium coccocarpioides, and Trapelia placodioides. Five previously recorded species, namely Lecanora carpinea, Platismatia glauca, P. lacunosa, P. tuckermanii and Roccella phycopsis are shown to be based on misidentifications and are excluded from the checklist. Three new combinations of species previously placed in Pertusaria to Lepra are proposed: L. bulolensis

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First Record of Viridothelium virens (Trypetheliales, Ascomycota) in the Southeast Asian Tropics

Cited by 2 publications

References 22 publications

Naphthoquinones From Cultured Mycobiont of Marcelaria cumingii (Mont.) and Their Cytotoxicity

Naphthoquinones From Cultured Mycobiont of Marcelaria cumingii (Mont.) and Their Cytotoxicity

A new checklist of lichenized fungi occurring in Thailand

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