Publications by authors named "Xiao-Hong Ji"

9 Publications

  • Page 1 of 1

Phylogeny of the genus and taxonomic assessment of the group.

Mycologia 2019 May-Jun;111(3):423-444. Epub 2019 Apr 9.

a Beijing Advanced Innovation Center for Tree Breeding by Molecular Design , Beijing Forestry University , Beijing 100083 , China.

The genus of the Hymenochaetaceae is characterized by resupinate to pileate basidiocarps, a dimitic hyphal system with fine crystal aggregates and encrusted generative hyphae in dissepiment edge and tube trama, the presence of hymenial setae, and hyaline, thin-walled, smooth basidiospores. Members of the group are easy to distinguish from other species of because of the moderately large pores, presence of mycelial setae, and large hymenial setae. Here, we explore phylogenetic relationships among 20 species of based on examination of some 90 collections sampled worldwide. Seven new species are recognized in the group-, and -described from China, Costa Rica, Mexico, and the United States. Phylogenetic analyses inferred from DNA sequences of the nuc rDNA internal transcribed spacer (ITS1-5.8S-ITS2 = ITS), D1-D2 domains of nuc 28S rDNA (28S), and translation elongation factor EF-1 alpha () support the group as one of two major clades within comprising nine species worldwide.
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http://dx.doi.org/10.1080/00275514.2019.1570749DOI Listing
April 2020

sp. nov. (Hericiaceae, Basidiomycota) from Australia.

MycoKeys 2018 11(41):29-38. Epub 2018 Oct 11.

College of Life Science and Technology, Yangtze Normal University, Chongqing 408100, China Yangtze Normal University Chongqing China.

is described and illustrated from Tasmania, Australia based on rDNA evidence and morphological characters. It is characterised by an annual growth habit; resupinate basidiocarps up to 100 cm long; spines cream when fresh and cinnamon when dry, up to 3 mm long and a few glued at tips when dry; distinct white fibrillous to cottony margin; a monomitic hyphal structure with non-amyloid, non-dextrinoid and cyanophilous generative hyphae; the presence of gloeoplerous hyphae and gloeocystidia which become dark blue in Melzer's reagent; the presence of chlamydospores in the subiculum and rough basidiospores measuring 3.5-4.5 × 2.4-3.2 µm. A molecular study based on the combined ITS (internal transcribed spacer region) and 28S (the large nuclear ribosomal RNA subunit) dataset supports the new species in . A key to species of sensu stricto is provided.
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http://dx.doi.org/10.3897/mycokeys.41.28485DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6194139PMC
October 2018

Taxonomy and phylogeny of Pyrrhoderma: a redefinition, the segregation of Fulvoderma, gen. nov., and identifying four new species.

Mycologia 2018 Sep-Oct;110(5):872-889. Epub 2018 Sep 21.

c Institute of Microbiology, PO Box 61 , Beijing Forestry University , Beijing 100083 , China.

Previously, Pyrrhoderma accommodated two polypore species, P. adamantinum and P. scaurum; however, phylogenetic studies indicated that these two species were not congeneric within the Hymenochaetaceae and that P. adamantinum formed a clade with Phellinidium noxium. To resolve the relationships among the two species of Pyrrhoderma and other related taxa, specimens from China, Costa Rica, Singapore, and Thailand were studied from both morphological and phylogenetic perspectives. A new genus, Fulvoderma, is erected to accommodate F. scaurum comb. nov., and a new species, F. australe (the generic type). Pyrrhoderma is delimited to include the generic type, P. sendaiense (a later synonym of P. adamantinum); two new combinations, P. lamaënse comb. nov., and P. noxium comb. nov.; and three new species, P. hainanense, P. thailandicum, and P. yunnanense. In addition, an undescribed lineage including several specimens from subtropical and tropical forests in China, Costa Rica, Singapore, and Thailand also nested within the Pyrrhoderma clade. However, as the voucher specimens are sterile or almost so, they are not described. The concept of Pyrrhoderma was emended to also accommodate species bearing resupinate, effuse-reflexed basidiocarps, hymenial or hyphoid setae, and non-subglobose basidiospores. Keys to Fulvoderma and Pyrrhoderma are provided.
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http://dx.doi.org/10.1080/00275514.2018.1474326DOI Listing
March 2019

Three new species of (Hymenochaetales, Basidiomycota) based on the evidence from morphology and DNA sequence data.

MycoKeys 2018 8(30):73-89. Epub 2018 Mar 8.

Beijing advanced innovation center for tree breeding by molecular design, Beijing Forestry University, Beijing 100083, PR China.

, and are described and illustrated as new species based on morphological characters and molecular evidence. They have annual to perennial, mostly resupinate basidiomata with grayish fresh pores, an indistinct subiculum, lack any kind of setae, have brownish, thick-walled basidiospores, and cause a white rot. The distinctive morphological characters of the new species and their related species are discussed. Phylogenies based on the nuclear ribosomal large subunit (28S) and the nuclear ribosomal ITS region show that these three new species form three distinct lineages in the clade. A key to known species of is given.
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http://dx.doi.org/10.3897/mycokeys.30.23109DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5904509PMC
March 2018

Phylogeny and diversity of the morphologically similar polypore genera Rigidoporus, Physisporinus, Oxyporus, and Leucophellinus.

Mycologia 2017 16;109(5):749-765. Epub 2018 Jan 16.

a Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University , Beijing 100083 , China.

Rigidoporus and its morphologically similar genera Physisporinus, Oxyporus, and Leucophellinus, which include some forest pathogens and medicinal species, are very important groups of wood-decaying fungi. Species of these genera have not only ecological functions, but also economic importance. Phylogenetic and taxonomic studies on taxa in these genera were carried out. Inferred from phylogenies based on DNA sequences of the nuc rDNA ITS1-5.8S-ITS2 (internal transcribed spacer [ITS]) and D1-D2 domains of nuc 28S rDNA, 36 species sampled that traditionally belong to Physisporinus, Rigidoporus, Leucophellinus, and Oxyporus are nested mostly in eight lineages. Of these lineages, five (including four genera of Physisporinus, Emmia, Flaviporus, and Flavodon and one taxon "R. hypobrunneus") belong to Polyporales and three (including the genera Rigidoporus, Bridgeoporus, and Leucophellinus) belong to Hymenochaetales. Rigidoporus and Oxyporus are merged because the type species of both genera are nested in a single lineage within Hymenochaetales. Some taxon previously placed in Ceriporia and Oxyporus are transferred to Emmia and Flavodon, respectively, on the basis of current phylogeny. Utilizing a combination of the morphological and phylogenetic evidence, 16 new combinations in Bridgeoporus, Emmia, Flaviporus, Flavodon, Rigidoporus, and Physisporinus are proposed. Five new species, Physisporinus crataegi, P. lavendulus, P. subcrocatus, P. tibeticus, and Rigidoporus submicroporus, are recognized from China. Illustrated descriptions of these novel species are provided. Three taxa are treated at the generic level of Physisporinus because of limited samples.
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http://dx.doi.org/10.1080/00275514.2017.1405215DOI Listing
November 2018

Phylogeny and diversity of Fomitiporella (Hymenochaetales, Basidiomycota).

Mycologia 2017 15;109(2):308-322. Epub 2017 Mar 15.

a Institute of Microbiology, PO Box 61, Beijing Forestry University , Beijing 100083 , People's Republic of China.

Fomitiporella accommodates polypores producing annual to perennial basidiocarps with an indistinct subiculum (very thin to almost lacking), mostly a dimitic hyphal structure, lacking any kind of setae, with brownish, thick-walled basidiospores, and causing a white rot. Previously, only a few samples of Fomitiporella were studied on the basis of morphological and nuc 28S rDNA (28S)-based phylogenetic analyses. In this study, we made a comprehensive study on Fomitiporella on the basis of collections from Central America, USA, Europe, and China. The phylogenetic analysis, including 28 nuc 28S rDNA and 29 nuc rDNA ITS1-5.8S-ITS2 (internal transcribed spacer [ITS]) sequences newly generated, discovered 14 new lineages. Combined with morphological evidence, 4 new lineages are described and illustrated as new species, viz., Fomitiporella americana, F. micropora, F. sinica, and F. subinermis; 10 other new lineages, each with a single collection, are still treated as unidentified taxa; three new combinations, viz., Fomitiporella tenuissima, F. chinensis, and F. resupinata, are proposed. In addition, F. inermis is redescribed. A key to the 12 known species of Fomitiporella is provided.
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http://dx.doi.org/10.1080/00275514.2017.1305943DOI Listing
October 2018

Global diversity and phylogeny of Onnia (Hymenochaetaceae) species on gymnosperms.

Mycologia 2017 4;109(1):27-34. Epub 2017 Jan 4.

a Institute of Microbiology, PO Box 61, Beijing Forestry University , Beijing , China.

Onnia includes white rotting polypores with annual basidiocarps, a duplex context, monomitic hyphal structure, hymenial setae, and hyaline, thin-walled, smooth basidiospores. Specimens of Onnia, originating mainly from East Asia, Europe, and North America, were studied using both morphology and phylogenetic analyses. Our concatenated data set was derived from 25 collections and included (i) 25 nuc rDNA internal transcribed spacer region sequences (ITS1-5.8S-ITS2 = ITS), 17 generated in this study; and (ii) 14 nuc rDNA 28S rDNA sequences, including the D1-D2 domains, 11 of them generated in this study. The resulting maximum likelihood and Bayesian phylogenies recovered all sampled collections of Onnia as a well-supported clade. In this clade, three previously accepted species, viz., Onnia leporina, O. tomentosa, and O. triquetra, received strong support, whereas three additional lineages with strong support represent the new species described in this paper, O. subtriquetra, O. microspora, and O. tibetica. Of the six Onnia species occurring on gymnosperms, O. tomentosa and O. leporina grow mainly on Picea and have circumboreal distribution in the Northern Hemisphere. In contrast, other species that mostly grow on Pinus are geographically restricted to limited regions, viz., O. triquetra in Europe, O. subtriquetra in North America, and O. microspora and O. tibetica in Asia.
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http://dx.doi.org/10.1080/00275514.2016.1274619DOI Listing
May 2018

Differential expression of serum proteins in rats subchronically exposed to arsenic identified by iTRAQ-based proteomic technology-14-3-3 ζ protein to serve as a potential biomarker.

Toxicol Res (Camb) 2016 Mar 1;5(2):651-659. Epub 2016 Feb 1.

Key Lab of Etiologic Epidemiology of National Health and Family Planning Commission , Key Lab of Etiologic Epidemiology of Education Bureau of Heilongjiang Province , The Center for Endemic Disease Control , Chinese Center for Disease Control and Prevention , Harbin Medical University , Harbin 150081 , China . Email: ; Email: ; ; Tel: (+86)-451-8750- 2980.

Arsenic is a multi-system toxicant. However, the mechanism of arsenic toxicity is not fully clarified and few effective protein biomarkers could be used for arsenic poisoning. This study was to investigate the differentially expressed proteins in the serum of rats subchronically exposed to arsenic. Sixty male rats were randomly divided into four groups, and the dose of sodium arsenite in drinking water for each group was 0, 2, 10, and 50 mg L, respectively. The exposure lasted for 12 weeks. An Isobaric tags for relative and absolute quantitation (iTRAQ)-based proteomic approach was used to identify the differentially expressed proteins in serum between control and 50 mg L groups. A total of 201 serum proteins were identified by iTRAQ, of which 12 were significantly changed by arsenic exposure with two up-regulated and ten down-regulated proteins. One down-regulated protein 14-3-3 ζ, an abundant protein expressed in the brain, was verified by ELISA using serum samples and by immunohistochemical, real time PCR, and western blot methods using brain tissues in four groups. Our work provided valuable insight into the serum protein changes in rats exposed to arsenic, and indicated that 14-3-3 ζ may serve as a useful biomarker for nervous damage caused by arsenic poisoning.
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http://dx.doi.org/10.1039/c5tx00393hDOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6062359PMC
March 2016

Activation of G-protein coupled estrogen receptor inhibits the proliferation of cervical cancer cells via sustained activation of ERK1/2.

Cell Biochem Funct 2015 Apr 6;33(3):134-42. Epub 2015 Mar 6.

Department of Obstetrics and Gynecology, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu, China.

Cervical cancer is one of the most common gynaecological women cancer and suggested to be modulated by estrogenic signals. G protein-coupled receptor (GPER), a seven-transmembrane G protein-coupled receptor, has been reported to regulate the cell proliferation of various cancers. But there is no study investigating the effects of GPER on the progression of cervical cancer. In the present study, we revealed for the first time that GPER was also highly expressed in various human cervical cancer cells. Activation of GPER via its specific agonist G-1 induced G2/M cell cycle arrest and down regulation of cyclin B via a time dependent manner. Furthermore, G-1 treatment induced sustained activation of extracellular-signal-regulated kinases (ERK)1/2 via epidermal growth factor receptor (EGFR) signals. Both inhibitors of ERK1/2 and EGFR significantly abolished G-1-induced suppression of cell proliferation and down regulation of cyclin B. Generally, our study revealed that GPER is highly expressed in human cervical cancer cells and its activation inhibits cell proliferation via EGFR/ERK1/2 signals. It suggested that G-1 can be considered as a potential new pharmacological tool to reduce the growth of cervical cancer.
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http://dx.doi.org/10.1002/cbf.3097DOI Listing
April 2015