Polyphasic characterization of rhizobia isolated from Leucaena leucocephala from Panxi, China

Leucaena leucocephala was introduced into Panxi, Sichuan, China, in the 1980s and 1990s for afforestation and preventing water loss and soil erosion in this area. The co-introduction of rhizobial symbionts of introduced plants has drawn attention since they may influence local soil communities. We studied the phylogenetic position of the L. leucocephala isolates and assessed if the rhizobia were introduced together with the host to Panxi, Sichuan, China. The glnII and atpD genes of fifteen representative isolates were sequenced and analyzed, and applied multilocus sequence analyses in which the housekeeping genes recA, glnII and atpD were included. Furthermore, we estimated the within species diversity directly with 23S rDNA and IGS RFLP and indirectly through phenotypic analysis of forty L. leucocephala isolates. The isolates represented seven species and 38 diversified strains in the genera Ensifer, Mesorhizobium, Bradyrhizobium and Rhizobium. The within species diversity of the Ensifer isolates was large, proposing a potential to occupy novel niches. There was not conclusive evidence to show that any of the strains would have been co-introduced with L. leucocephala. On the contrary, we came to a conclusion that the possible introduction should not be inferred from sequence data alone.     

Polyphasic characterization of water bloom forming Raphidiopsis species (cyanobacteria) from central China

Two strains of Raphidiopsis Fritsch et Rich were isolated from a fishpond in Wuhan city, China and rendered axenic, and characterized by a combination of morphological, physiological, biochemical and genetic methods. Morphologically the strains were identified as Raphidiopsis mediterranea Skuja (straight trichomes) and R. curvata Fritsch et Rich (coiled trichomes). These two strains demonstrated slight differences in optimal temperature range and GC content, while sharing some common characteristics including inability to grow hetertrophically, similar salinity tolerance (up to 0.78%) and an identical fatty acid composition. Cyanotoxins were not found in the strain of R. mediterranea, however, the strain of R. curvata contained both deoxy-cylindrospermopsin and cylindrospermopsin. Phylogenetic affiliations inferred from 16S rRNA gene sequences demonstrated that both Raphidiopsis strains clustered with Cylindrospermopsis, demonstrating their phylogenetic ties to Nostocaceae.     

柯夫丝膜菌,中国丝膜菌属一新种(英文)

报道了产自我国云南的丝膜菌属一新种:柯夫丝膜菌Cortinarius korfii。该新种主要特征为菌盖表面橄榄褐色并具小鳞片,菌褶蓝紫色,菌柄表面具绒毛,子实体在紫外光下有显著的荧光反应。详细描述了这一新种,并与其相似种进行了比较。     

A new yeast species,Candida aurita sp. nov., from oligotrophic bogs of Western Siberia

Five anamorphous yeast strains of ascomycetous affinity with a specific mode of budding were isolated from raised bog soils of Bakcharskoe Bog (Tomsk oblast). According to their morphological and physiological properties, these strains belong to the genus Candida but differ from all species described previously. The level of DNA-DNA homology with species similar in the assimilation spectrum was as low as 7%. Based on these data, the new species Candida aurita sp. nov. is described.     

江西杜鹃花属一新种

伏毛杜鹃新种图1 Rhododendron strigosum R. L. Liu, sp. nov. Fig. 1 Species nova affinis Rh. tenuilaminari Tam, quod differt lobis calycinum truncatis, dense adpresse argenteo-strigosis, corolla extus sparse puberula, staminibus 7, stylis villoso-strigosis; etiam affinis Rh. pulchro Sweet, quod differt lobis calycinum majoribus, usque ad 1.2 cm longis, lanceolatis, corolla majore, 4.8～5.2 cm longa, staminibus 10.     

中国吉林蓝藻门3新种

1　高山真枝藻　新种　图1Ｓｔｉｇｏｎｅｍａａｌｐｉｎｕｍ　Ｈ.Ｘ.Ｘｉａｏ,ｓｐ.ｎｏｖ.Ｆｉｇ.1ＳｐｅｃｉｅｓｎｏｖａｈａｂｉｔｕｓｉｍｉｌｌｉｍａＳ.ｎａｎｘｉｏｎｇｅｎｓｉＷ.Ｊ.Ｚｈｕ,ａｑｕｏｆｉｌｉｓ18～19μｍｃｒａｓｓｉｓ,ｖａｇｉｎｉｓａｄａｐｉｃｅｓｒａｍｕｌｏｒｕｍｆｕｌｖｉｓ,ｈｏｒｍｏｇｏｎｉｉｓｍａｊｏｒｉｂｕｓａｄａｐｉｃｅｓｒａｍｕｌｏｒｕｍｅｔａｄｌａｔｅｒｅｓｒａｍｕｌｏｒｕｍｐｏｓｉｔｉｓｄｉｆｆｅｒｔ.Ｔｈａｌｌｕｓｐｕｌｖｉｎａｔｕｓ,ｇｅｌａｔｉｎｏｓｕｓ,ｎｉｇｅｒ…     

Four new species of Orbiliaceae from Yunnan, China

During the fungal survey in YongPing County, Dali area in southwest China, a total of 50 specimens of Orbiliaceae were collected. Among them, were four apparently uncommon taxa growing on bark and wood of decayed branches of undetermined broad-leaved trees lying on the moist ground. They are described here as new species: Orbilia acicularis sp. nov., O. arcospora sp. nov., O. limoniformis sp. nov., and Hyalorbilia nodulosa sp. nov. Orbilia acicularis is characterized by needle-shaped straight ascospores, O. arcospora by spores being curved like an arch, O. limoniformis according to its lemon-shaped spores, and Hyalorbilia nodulosa by the knob-like glassy processes on the marginal excipular cells, the three Orbilia species also by filiform to subulate spore bodies (SBs) in the living spores.     

江西桂娟花属一新种

伏毛杜鹃　新种　图 1ＲｈｏｄｏｄｅｎｄｒｏｎｓｔｒｉｇｏｓｕｍＲ .Ｌ .Ｌｉｕ ,ｓｐ .ｎｏｖ .Ｆｉｇ .1ＳｐｅｃｉｅｓｎｏｖａａｆｆｉｎｉｓＲｈ .ｔｅｎｕｉｌａｍｉｎａｒｉＴａｍ ,ｑｕｏｄｄｉｆｆｅｒｔｌｏｂｉｓｃａｌｙｃｉｎｕｍｔｒｕｎｃａｔｉｓ,ｄｅｎｓｅａｄ ｐｒｅｓｓｅａｒｇｅｎｔｅｏ ｓｔｒｉｇｏｓｉｓ,ｃｏｒｏｌｌａｅｘｔｕｓｓｐａｒｓｅｐｕｂｅｒｕｌａ ,ｓｔａｍｉｎｉｂｕｓ 7,ｓｔｙｌｉｓｖｉｌｌｏｓｏ ｓｔｒｉｇｏｓｉｓ;ｅｔｉａｍａｆｆｉｎｉｓＲｈ .ｐｕｌｃｈｒｏＳｗｅｅｔ,ｑｕｏｄｄｉ…     

A new species of Apocynaceae from Hainan, China

Hoya ledongensis S. Y. He & P. T. Li, sp. nov. 乐东球兰(S2-3. Fig. 1) Type: China. Hainan: Jianfengling, on tree and rock in a montane rainforest, alt. 960 m, 2008-05-08, S. Y. He (0805081 holotype, CANT; 0805082 holotype, CANT).     

云南宿苞豆属一新种

报道了云南发现宿苞豆属一新种。     

广西兰科二新种

广西兰科二新种郎楷永（中国科学院植物研究所,北京１０００９３）ＴｗｏｎｅｗｓｐｅｃｉｅｓｏｆＯｒｃｈｉｄａｃｅａｅｆｒｏｍＧｕａｎｇｘｉ,ＣｈｉｎａＬａｎｇＫａｉｙｏｎｇ（ＩｎｓｔｉｔｕｔｅｏｆＢｏｔａｎｙ,ＡｃａｄｅｍｉａＳｉｎｉｃａ,Ｂｅｉｊｉｎ...     

Three new species of Solicorynespora from Hainan, China

Three previously undescribed Solicorynespora species were collected from tropical forests in Hainan Province, China. S. melicopes sp. nov., S. linderae sp. nov. and S. fici sp. nov. are described and illustrated from specimens collected on dead branches of Melicope triphylla, Lindera communis and Ficus auriculata, respectively. They are compared with closely related taxa. A dichotomous key and a synoptic table to Solicorynespora species are provided.