共查询到18条相似文献，搜索用时 46 毫秒
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报道了毛壳菌属和梭孢壳属5个新记录种,同丝毛壳Chaetomiumhomopilatum,刺毛壳C.spinosum,变绿毛壳C.virescens,小孢梭孢壳Thielaviamicrospora,栖土梭孢壳T.terricola。根据所采集的标本和菌种对这些种进行了描述和照像。干制培养物标本和菌种保藏在西北农林科技大学真菌标本室(HMUABO)。 相似文献
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报道了毛壳菌属和梭孢壳属5个新记录种,同丝毛壳Chaetomiumhomopilatum,刺毛壳C.spinosum,变绿毛壳C.virescens,小孢梭孢壳Thielaviamicrospora,栖土梭孢壳T.terricola。根据所采集的标本和菌种对这些种进行了描述和照像。干制培养物标本和菌种保藏在西北农林科技大学真菌标本室(HMUABO)。 相似文献
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报道生于禾本科植物上的链格孢属一新种黑麦草生链格孢Alternarialoliicola,此种引起黑麦草穗腐,不同于已报道的生于黑麦草上的另一个种Alternarialolii-temulenti(具长的分生孢子链)。和生于禾本科植物上的其它链格孢相比,该新种与Alternariajaponica和Alternariaoryzae一样具有相似的产孢型,但是新种的分生孢子细长,不同于后两者。新种模式标本保存在河南农业大学标本馆菌物分馆(HHAUF)。 相似文献
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报道生于豆科植物沙冬青Ammopiptanthus mongolicus上的链格孢属真菌一新种,沙冬青链格孢Alternaria ammopiptanthi。此种不同于已从豆科植物上报道的5个长喙链格孢种（复喙链格孢A.multirostrata、决明链格孢A.cassiae、猪屎豆生链格孢A.crotalariicola、瓜尔豆链格孢A.cyamopsidis和长喙链格孢A.longirostrata）,主要是其分生孢子的长喙不分枝和孢身细瘦。研究过的模式标本（PSNXAAFS267852）保存在宁夏农林科学院植物病害标本室。 相似文献
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《菌物研究》2022,(1)
报道了蕉孢壳属真菌4个中国新记录种,即：马克欧文蕉孢壳菌Diatrype macowaniana、波纹蕉孢壳菌Diatrype undulata、俄勒冈蕉孢壳菌Diatrype oregonensis和刺蕉孢壳菌Diatrype spilomea。其中,马克欧文蕉孢壳菌和波纹蕉孢壳菌采自吉林省,前者的主要特征为子座扁球状,不规则,黑色至黑褐色,子囊孢子短棒状、无色透明;后者主要特征为子座大片垫状蔓延,呈波浪状轮廓,表面黑色,通常具明显边界,子囊孢子腊肠状、淡黄色;俄勒冈蕉孢壳菌D. oregonensis采自云南省,其主要特征为子座呈圆锥状肿块,圆形或多边形,表面黑色,子囊孢子腊肠状,透明至淡黄色;刺蕉孢壳菌D. spilomea采自海南省,其主要特征为子座从树皮中裂出,垫状,轮廓不规则,边缘陡,黑棕色至黑色,子囊孢子短棒状,透明无色。根据采集的材料对以上4种的宏观和微观特征进行了详细描述及图示。 相似文献
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Taxonomy of the little‐studied brown algal species Punctaria mageshimensis (Ectocarpales s.l.) was reexamined by molecular phylogeny and morphology. In the genetic analyses of newly collected specimens using plastid rbcL and psaA gene sequences, the specimens morphologically referable to P. mageshimensis were phylogenetically distant from Ectocarpales s.l. and were included in the clade of Spatoglossum (Dictyotales). Morphological reexamination of the type specimen and newly collected specimens confirmed its systematic position in Dictyotales: Branched thallus; cushion‐shaped rhizoidal holdfast occasionally forming secondary holdfast at the bottom of the thallus; many discoidal plastids without pyrenoid per cell; tetrasporangium‐like reproductive structures with dark, homogeneous cell content; occurrence of hair tufts. Genetically P. mageshimensis was most related to a reported sequence of Spatoglossum asperum, but P. mageshimensis was considerably different from S. asperum as well as other known Spatoglossum species in the deep habitat and in having scarcely‐branched lanceolate and considerably thickened thallus. In conclusion, we propose the transfer of P. mageshimensis to Spatoglossum as S. mageshimense comb. nov. 相似文献
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P. V. BRUYNS T. L. NOWELL T. A. J. HEDDERSON 《Botanical journal of the Linnean Society. Linnean Society of London》2005,148(2):125-155
A survey of morphological characters is carried out for Stapeliopsis . The information obtained from this is combined with molecular data from the plastid trn L-F DNA region and ITS1 of the nuclear encoded 18S−26S rRNA cistron, to obtain a hypothesis of the evolutionary relationships among the species. It is shown that Stapeliopsis is monophyletic in a combined molecular and morphological analysis. Stapeliopsis is sister to a clade containing Huernia , Orbea and Tromotriche . The species of Stapeliopsis group into two clades. One contains S. khamiesbergensis , S. neronis and S. urniflora , and this is highly supported. The remaining species fall into an unsupported clade in which S. exasperata is sister to the others. The genera Hermanschwartzia Plowes and Neopectinaria Plowes are rejected. It is shown that a synapomorphy for Stapeliopsis is the laterally flattened inner corona-lobes, which touch the anthers only at their bases. Eight species of Stapeliopsis are recognized, with no subgeneric divisions. © 2005 The Linnean Society of London, Botanical Journal of the Linnean Society , 2005, 148 , 125–155. 相似文献
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Hiroshi Kawai Alison R. Sherwood Shinsuke Ui Takeaki Hanyuda 《Phycological Research》2023,71(2):100-106
The subtidal brown algal species Sporochnus dotyi Brostoff (Sporochnales, Phaeophyceae), which has been regarded as a Hawaiian endemic, is reported from Kushimoto, Kii Peninsula, Pacific coast of central Honshu, Japan, for the first time outside Hawai'i. The species grew on subtidal rocks ca. 5–20 m deep attached by a small conical holdfast. The erect thalli were 5–30 cm high, terete, robust and alternately branched in 1–2 orders. When mature, pedicellate receptacles developed on the branches, and formed elliptical sori 1 mm long with a pedicel 3–5 mm long. The apical parts of the thalli and the receptacles were terminated with a tuft of simple assimilatory filaments of up to 4 mm long and showed prominent green to yellow underwater iridescence. Reproductive filaments (paraphyses) were densely packed, simple, up to 200 μm long and bore 4–6 mostly unilateral unilocular zoidangia 20–22 μm long and 5–6 m in diameter. In the genetic analyses, the Sporochnus alga from Kushimoto had partial rbcL sequence identical to S. dotyi from Hawai'i. The cox3 phylogeny revealed that this alga formed a fully supported clade with S. dotyi. Therefore, we identified the alga from Kushimoto as S. dotyi. This finding of S. dotyi from Japan, together with the recent reports of the mesophotic macroalgae Ryuguphycus kuaweuweu (=Umbraulva kuaweuweu), Ulva iliohaha and Newhousia imbricata from various localities in the Pacific Ocean including Japan, suggest closer biogeographical connections of subtidal/mesophotic macroalgae in the Pacific than previously recognized. 相似文献
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Laura Brenes‐Guilln Daniela Vidaurre‐Barahona Saylen Morales Marielos Mora‐Lpez Ana Sittenfeld Lorena Uribe‐Lorío 《Journal of phycology》2021,57(1):183-198
Central America is one of the most important biodiversity hot spots in the world, and Costa Rican microbial communities from thermal springs are the best characterized in the isthmus. Miravalles is an inactive quaternary stratovolcano, and the Rincón de la Vieja is a unique active volcano, in whose slopes diverse hydrothermal springs, such as Las Lilas, are located. These springs harbor extensive microbial mats, whose diversity has been studied. Based on their importance as primary producers, in this study we focused on cultured cyanobacterial diversity from two geothermal environments of northern Costa Rica. Several cultural, molecular and taxonomic techniques were employed to maximize the results of a polyphasic approach. Sample collection sites were physicochemically described, and strains were isolated and characterized by light and electron microscopy. Phylogenetic analysis was performed using 16S rRNA gene sequences and amplified ribosomal DNA restriction analysis (ARDRA). Fifty‐six phylotypes were isolated and classified into 21 morphotypes and identified in 14 genera, some of them might be new species within these genera. Furthermore, according to phylogenetic analysis, there are three possible new genera in our collection. Miravalles and Las Lilas thermal springs are reservoirs of novel phylogeographic lineages of phototrophic microorganisms. This study is the first report of strains that belong to the genera Gloeocapsa, Stanieria, Microseira, Klisinema and Oculatella isolated from thermal springs and growing at temperatures above 50°C. We also obtained isolates assigned to Synechococcus, Leptolyngbya spp., and Fischerella, which are considered typical strains in these environments. 相似文献