Ramalina almquistii, R. hokkaidensis, R. intermedia, R. obtusata, R. pentecostii, R. pertusa and ... more Ramalina almquistii, R. hokkaidensis, R. intermedia, R. obtusata, R. pentecostii, R. pertusa and R. sekika are reported from China for the first time. R. pentecostii and R. sekika are the second report for the species. R. pseudosekia was reduced to a synonym of R. pollinaria.
Ramatina almquistii, R. hokhaidensis, R. intermedia, R. obtusata, R, pentecostii, R. pertusa and ... more Ramatina almquistii, R. hokhaidensis, R. intermedia, R. obtusata, R, pentecostii, R. pertusa and R. seldka are reported from China fbr the first time, R. pentecostii and R. sekika are the $econd report for the species. R, psettdosekia was reduced to a synonym ofR. pollinaria.
Three strains of endolichenic fungi identified as Creosphaeria sassafras, Annulohypoxylon multifo... more Three strains of endolichenic fungi identified as Creosphaeria sassafras, Annulohypoxylon multiforme and Penicillium vulpinum, were isolated from samples of Peltigera species collected from Shennongjia forest region in Central China. The anti-pathogenic microorganic activities of them were assessed by the methods of culturing with their fermentation broth and plate confrontation co-culture against four pathogenic fungi. The results showed that some strains had more obvious inhibitory effect than positive control strain Chaetomium globosum. We conclude that some endolichenic fungi have the potential for use in developing a novel therapy to control plant disease and saprolegniasis.
Cytotoxic Secondary Metabolites from the Endolichenic Fungus Hypoxylon fuscum
Planta Medica, 2019
As part of our search for new cytotoxic and antimicrobial natural products from endolichenic fung... more As part of our search for new cytotoxic and antimicrobial natural products from endolichenic fungi, 19 compounds including 1 new 10-member lactone (2), 1 new polyacetylene glycoside (3), 1 new brasilane-type sesquiterpenoid glycoside (4), and 2 isobenzofuran-1(3H)-one derivatives (5 and 6) were isolated from the solid culture of the endolichenic fungus Hypoxylon fuscum. Their structures were unambiguously elucidated by NMR spectroscopic data, MS, ECD (electronic circular dichroism) calculation, and chemical methods. The cytotoxic effects on K562, SW480, and HEPG2 cell lines and the antimicrobial activity against Bacillus subtilis, Staphylococcus aureus, Escherichia coli, and Candida albicans were assessed. Compounds 1, 2, and 5 exhibited moderate cytotoxicity against K562, SW480, and HEPG2 cell lines while compounds 1, 9, and 11 displayed weak antibacterial activity against S. aureus.
Four New Cytotoxic Arborinane-Type Triterpenes from the Endolichenic Fungus Myrothecium inundatum
Planta Medica, 2019
Two new arborinane-type triterpenes, myrotheols A (1) and B (2), two new arborinane-type glycosid... more Two new arborinane-type triterpenes, myrotheols A (1) and B (2), two new arborinane-type glycosides, myrothesides C (3) and D (4), together with four known diterpenes (5 – 8) were isolated from the ethyl acetate extract of the endolichenic fungus Myrothecium inundatum. The structures of new compounds 1 – 4 were elucidated by NMR and MS analyses. The absolute configuration of 1 was assigned by a single-crystal X-ray diffraction experiment. Compounds 3 and 4 represent the first two natural 4-O-methyl-α-D-mannosides. Compounds 1 – 8 exhibited cytotoxicity against K562 and RKO human cancer cell lines.
Recent Study on the Phylogeny of the Genus Cladonia (s. lat.) with the Emphasis on the Integrative Biology(Part Two Natural History Studies)
National Science Museum Monographs, 2004
A new species in the lichen genus Peltigera from northern China based on morphology and DNA sequence data
The Bryologist, 2015
ABSTRACT In an investigation of Peltigera species in montane forests of northern China, a new spe... more ABSTRACT In an investigation of Peltigera species in montane forests of northern China, a new species, P. isidiophora was identified based on morphological characteristics and DNA sequence data. It differs morphologically from other members of the P. canina-group by its laminal clustered isidia occurring in pits, shiny upper surface, and its slender, scattered and simple rhizines. It also differs chemically from morphologically similar species by two unnamed terpenoid metabolites detected by thin layer chromatography in solvent systems C and G. Comparisons of the ITS sequences, both in phylogenetic analysis and secondary structure models of ITS2, support the taxonomic distinctiveness of this species. A synoptic table to morphologically similar species, and a key to the species in the Peltigera canina group from China are provided.
Diploschistes xinjiangensis from Xinjiang in northwest China is described as new to science. The ... more Diploschistes xinjiangensis from Xinjiang in northwest China is described as new to science. The species is characterized by the thick bluish gray thallus, asci with eight large ellipsoid ascospores, and the presence of diploschistesic and lecanoric acids. It grows on rock in the semiarid region at elevations of ca. 1700 m. ITS rDNA sequence analyses support the taxonomic distinctness of this species.
Long chain n-alkanes and their carbon isotopes in lichen species from western Hubei Province: implication for geological records
Frontiers of Earth Science, 2011
Abstract Five coticolous lichen samples were collected from western Hubei Province of China to an... more Abstract Five coticolous lichen samples were collected from western Hubei Province of China to analyze the long chain n-alkanes and their carbon isotope compositions. The n-alkanes range in carbon number from C 17 to C 33 with strong odd-over-even ...
Specimens of Rhizoplaca chrysoleuca from Mount Wuling can be divided into two distinct groups bas... more Specimens of Rhizoplaca chrysoleuca from Mount Wuling can be divided into two distinct groups based on obvious differences in morphological characters. Here we investigated 26 specimens of R. chrysoleuca from Mount Wuling, 10 specimens of this species from other areas and seven specimens of other Rhizoplaca species by analyzing morphology, chemistry and genetics. Nine chemotypes were detected among the specimens of R. chrysoleuca from Mount Wuling, and five of them were reported for the first time. Based on the ITS phylogenetic analysis, the chemotypes and the insertion distribution patterns in SSU rDNA, the samples of R. chrysoleuca from Mount Wuling were grouped in two distinct clades corresponding to two phenotypic groups and no gene flow was detected between these two groups. Our results establish all individuals of Rhizoplaca chrysoleuca are conspecific although some populations have been isolated on Mount Wuling, indicating that they are in the process of speciation. Our study also reveals that the relationships between genotypes and chemotypes are complicated and should be avoided, and we instead recommend using single individuals or few individuals from the same site to represent the population or whole species in systematics study. The results also indicate that Rhizoplaca chrysoleuca might provide a good model for studying the speciation of saxicolous lichenized fungi.
Lecanora weii, a new multispored species of Lecanora s. str. from northeastern China
Mycotaxon, 2009
ABSTRACT
Peltigera wulingensis, a new lichen (Ascomycota) from north China
The Lichenologist, 2013
The terricolous lichen Peltigera wulingensis sp. nov. is described from Wuling Mountain, North Ch... more The terricolous lichen Peltigera wulingensis sp. nov. is described from Wuling Mountain, North China. It can be distinguished from other members of the P. rufescens group by its phyllidia along the margin or laminal cracks, scabrose upper surface, lobe extremities with tufts of tiny grey-whitish to pale brown hairs, and its slender, scattered and simple rhizines. Comparisons of the ITS sequences of the nuclear ribosomal DNA repeat tandem support the taxonomic distinctness of this species.
Ascomycota has a faster evolutionary rate and higher species diversity than Basidiomycota
Science China Life Sciences, 2010
Differences in rates of nucleotide or amino acid substitutions among major groups of organisms ar... more Differences in rates of nucleotide or amino acid substitutions among major groups of organisms are repeatedly found and well documented. A growing body of evidence suggests a link between the rate of neutral molecular change within populations and the evolution of species diversity. More than 98% of terrestrial fungi belong to the phyla Ascomycota or Basidiomycota. The former is considerably richer in number of species than the latter. We obtained DNA sequences of 21 protein-coding genes from the lichenized fungus Rhizoplaca chrysoleuca and used them together with sequences from GenBank for subsequent analyses. Three datasets were used to test rate discrepancies between Ascomycota and Basidiomycota and that within Ascomycota: (i) 13 taxa including 105 protein-coding genes, (ii) nine taxa including 21 protein-coding genes, and (iii) nuclear LSU rDNA of 299 fungal species. Based on analyses of the 105 protein-coding genes and nuclear LSU rDNA datasets, we found that the evolutionary rate was higher in Ascomycota than in Basidiomycota. The differences in substitution rates between Ascomycota and Basidiomycota were significant. Within Ascomycota, the species-rich Sordariomycetes has the fastest evolutionary rate, while Leotiomycetes has the slowest. Our results indicate that the main contribution to the higher substitution rates in Ascomycota does not come from mutualism, ecological conditions, sterility, metabolic rate or shorter generation time, but is possibly caused by the founder effect. This is another example of the correlation between species number and evolutionary rates, which is consistent with the hypothesis that the founder effect is responsible for accelerated substitution rates in diverse clades.
Three corticolous species of <I>Lecanora</I> (<I>Lecanoraceae</I>) new to China
Mycotaxon, 2011
ABSTRACT
Assessing biogeographic relationships between North American and Chinese macrofungi
Journal of Biogeography, 2001
Lichen Collection and Herbaria in China(Part One Collection Building)
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