Two new species of Perenniporia sensu lato (Polyporales, Basidiomycota) from China and two new combinations in Crassisporus.

Phylogenetic and morphological analyses on Perenniporia s.l. were carried out. Phylogenies on Perenniporia s.l. are reconstructed with two loci DNA sequences including the internal transcribed spacer (ITS) regions and the large subunit (nLSU). Two new species from Yunnan Province, southwest China, Perenniporiaprunicola and P.rosicola in Perenniporia s.l., are illustrated and described. Perenniporiaprunicola is characterised by the perennial and resupinate basidiomata with a clay pink pore surface when fresh, a trimitic hyphal system, the presence of clavate to fusiform hymenial cystidia, ellipsoid to broadly ellipsoid basidiospores measuring 4.8-6.2 × 3.6-4.5 µm. Perenniporiarosicola is characterised by annual and resupinate basidiomata with a white pore surface when fresh, a dimitic hyphal system, the presence of dendrohyphidia, broadly ellipsoid to subglobose basidiospores measuring 5-5.8 × 4-5.2 µm. In addition, Crassisporus is a genus in Perenniporia s.l., in which two new combinations Crassisporusminutus and C.mollissimus are proposed. Main morphological characteristics of species related to new taxa are also provided.

Phylogeny and diversity of Rigidoporus (Hymenochaetales, Basidiomycota), including three new species from Asia.

Phylogenetic and morphological analyses on Rigidoporus were carried out. The genus Rigidoporus (Hymenochaetales, Basidiomycota), typified by R. microporus (Fr.) Overeem. (synonym Polyporus micromegas Mont.), was established by Murrill in 1905. The genus is mainly characterized by annual to perennial, resupinate, effused-reflexed to pileate or stipitate basidiomata with azonate or concentrically zonate and sulcate upper surface, a monomitic to pseudo-dimitic hyphal structure, simple-septate generative hyphae, and ellipsoid to globose basidiospores. Phylogeny on species of the genus is reconstructed with two loci DNA sequences including the internal transcribed spacer regions and the large subunit. Three new species in Rigidoporus are described and illustrated from Asia, and one new combination in the genus is proposed. The main morphological characteristics of the currently accepted species of Rigidoporus are provided.

Outline, Divergence Times, and Phylogenetic Analyses of Trechisporales (Agaricomycetes, Basidiomycota).

Phylogenetic analyses inferred from the nuc rDNA ITS1-5.8S-ITS2 (ITS) data set and the combined 2-locus data set [5.8S + nuc 28S rDNA (nLSU)] of taxa of Trechisporales around the world show that Sistotremastrum family forms a monophyletic lineage within Trechisporales. Bayesian evolutionary and divergence time analyses on two data sets of 5.8S and nLSU sequences indicate an ancient divergence of Sistotremastrum family from Hydnodontaceae during the Triassic period (224.25 Mya). Sistotremastrum family is characterized by resupinate and thin basidiomata, smooth, verruculose, or odontoid-semiporoid hymenophore, a monomitic hyphal structure, and generative hyphae bearing clamp connections, the presence of cystidia and hyphidia in some species, thin-walled, smooth, inamyloid, and acyanophilous basidiospores. In addition, four new species, namely, Trechispora dentata, Trechispora dimitiella, Trechispora fragilis, and Trechispora laevispora, are described and illustrated. In addition, three new combinations, namely, Brevicellicium daweishanense, Brevicellicium xanthum, and Sertulicium limonadense, are also proposed.

Two new brown rot polypores from tropical China.

Brown-rot fungi are types of fungi that selectively degrade cellulose and hemicellulose from wood and are perhaps the most important agents involved in the degradation of wood products and dead wood in forest ecosystem. Two new brown-rot species, collected from southern China, are nested within the clades of Fomitopsis sensu stricto and Oligoporus sensu stricto, respectively. Their positions are strongly supported in the Maximum Likelihood phylogenetic tree of the concatenated the internal transcribed spacer (ITS) regions, the large subunit of nuclear ribosomal RNA gene (nLSU), the small subunit of nuclear ribosomal RNA gene (nuSSU), the small subunit of mitochondrial rRNA gene (mtSSU), the largest subunit of RNA polymerase II (RPB1), the second largest subunit of RNA polymerase II (RPB2) and the translation elongation factor 1-α gene (TEF1) sequences. Fomitopsisbambusae, only found on bamboo, is characterised by its resupinate to effused-reflexed or pileate basidiocarps, small pores (6-9 per mm), the absence of cystidia, short cylindrical to oblong-ellipsoid basidiospores measuring 4.2-6.1 × 2-2.3 µm. Oligoporuspodocarpi is characterised by white to pale cream pore surface, round or sometimes angular pores (5-6 per mm), broadly ellipsoid to reniform basidiospores measuring 3.8-4.2 × 2-2.3 µm and growing on Podocarpus. Illustrated descriptions of these two novel species, Fomitopsisbambusae and Oligoporuspodocarpi, are provided.

Phylogeny and diversity of Bjerkandera (Polyporales, Basidiomycota), including four new species from South America and Asia.

Four new species of Bjerkandera, viz. B. ecuadorensis, B. fulgida, B. minispora, and B. resupinata spp. nov., are described from tropical America and Asia. B. ecuadorensis is characterised by dark grey to black pore surface, a monomitic hyphal system, hyaline to yellowish-brown generative hyphae, and ellipsoid basidiospores measuring 3.9-4.5 × 2.7-3 µm. B. fulgida is distinguished from the other species in the genus by clay buff to pale brown and shiny pore surface. B. minispora is characterised by white tomentose pore mouth and small basidiospores measuring 3.1-4.2 × 2-2.8 µm. B. resupinata is characterised by resupinate basidiomata, pinkish buff to pale brownish pore surface, and ellipsoid to broadly ellipsoid basidiospores measuring 4.5-6 × 3.2-4.1 µm. All these new species grow on angiosperm trunks or rotten wood, and cause a white rot. The closely related taxa to four new species are discussed. An identification key to the ten accepted species of Bjerkandera is provided, and a phylogeny comprising all known Bjerkandera species is provided.

Two new species of Perenniporia (Polyporales, Basidiomycota).

Two new species of Perenniporia, P. pseudotephropora sp. nov. and P. subcorticola sp. nov., are introduced respectively from Brazil and China based on morphological characteristics and molecular data. Perenniporia pseudotephropora is characterised by perennial, pileate basidiocarps with distinctly stratified tubes, grey pores, tissues becoming dark in KOH, a dimitic hyphal system with slightly dextrinoid arboriform skeletal hyphae and broadly ellipsoid to subglobose, truncate, weakly dextrinoid, cyanophilous basidiospores, measuring 4.9-5.2 × 4-4.8 µm. Perenniporia subcorticola is characterised by resupinate basidiocarps, yellow pores with thick dissepiments, tissues becoming dark in KOH, flexuous skeletal hyphae, ellipsoid, truncate and slightly dextrinoid basidiospores, measuring 4.2-5 × 3.5-4.2 µm. The morphologically-similar species and phylogenetically closely-related species to the two new species are discussed.

[Curative Effect of Jiedu Shengji Recipe in Preventing and Treating Acute Radiation Esophagitis in Radiotherapy Induced Esophageal Carcinoma Patients].

OBJECTIVE: To observe the curative effect of Jiedu Shengji Recipe (JSR) in preventing and treating acute radiation esophagitis in radiotherapy induced esophageal carcinoma patients. METHODS: Totally 86 mid-late stage esophageal carcinoma patients were assigned to the treatment group and the control group according to random digit table, 43 in each group. All patients received concurrent radiochemotherapy. Patients in the treatment group took JSR from starting the radiotherapy, one dose per day for 8 successive weeks, while those in the control group took mixture of dexamethasone, lido- caine, and gentamicin, 10 mL each time, taken before radiation and within 30 min after radiation, discontinued till the end of radiation. The occurrence time of acute radiation esophagitis and, duration of symptoms, esophageal radioactive damage degree, curative effect, improvement rate of Karnofsky performance scale (KPS) , and the incidence of adverse reactions were observed in the two groups. RESULTS: Compared with the control group, the occurrence time of acute radiation esophagitis was prolonged (15. 46±3. 37 days vs 10.23±2.46 days) , and duration of symptoms was shortened (20.18±4.56 days vs 26. 17±3. 26 days) in the treatment group, with statistical difference (P <0. 01). In the treatment group the occurrence rate of mid and high level (degree II to degree IV) acute radiation esophagitis was lower than that of the control group (Z =3. 34, P <0. 01). The total effective rate was 95. 35% (41/43) in the treatment group and 67. 44% (29/43) in the control group, with statistical difference between the two groups (X² =11.06, P<0.01 ). The improvement rate of KPS were higher in the treatment group than in the control group [65. 12% (28/43) vs 27.91% (12/43) ; X² =11.97, P <0. 01]. The incidence of adverse reactions were lower in the treatment group than in the control group with statistical difference [9.30% (4/43) vs 34. 88% (15/43) ; X²=8.17, P <0. 01]. CONCLUSION: JSR had better effect for preventing and treating moderate and severe acute radiation esophagitis in concurrent chemoradiotherapy induced esophageal carcinoma patients.