Systematics of the section Virescentia of the genus Batrachospermum (Batrachospermales, Rhodophyta) in Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Revisão da seção setacea do gênero Batrachospermum (Rhodophyta, Batrachospermales)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Estudio molecular y morfológico de las poblaciones íbero-baleares del género Batrachospermum (Batrachospermales, Rhodophyta): bases para la comprensión de su biodiversidad y distribución

Grupo de ficología, Departamento de Botánica, Universidad de Granada, Granada, España

An ethnobotanical study of traditional anti-inflammatory plants used by the Lohit community of Arunachal Pradesh, India

Aim of the study: Most people especially in rural areas depend on herbal medicines to treat many diseases including inflammation-related ailments such as rheumatism, muscle swelling, cut wound, accidental bone fracture, insect bites, pains and burn by fire and hot water. The objectives of this study were: to catalog ethno-medicinal plants of Lohit community, ecological status, indigenous folk medicinal uses, morphological parts used and to determine their reported pharmacological studies. Materials and methods: The ethnobotanical information on traditional medicinal plants exclusively used for management of inflammation-related ailments by the Khampti community of Arunachal Pradesh, India was based on first-hand field survey work through semi-structured interviews. Results and conclusion: A total of 34 species in 32 genera and 22 families were encountered during the field survey. Botanical families such as Asteraceae, Euphorbiaceae, Zingiberaceae and Lamiaceae were represented by the highest numbers of species reported in this study. Thirteen plant species, namely: Bombax ceiba, Canarium strictum, Chloranthus erectus, Xanthium indicum, Lycopodium clavatum, Coleus blumei, Batrachospermum atrum, Chlorella vulgaris, Marchantia palmata, Marchantia polymorpha, Eria pannea, Sterculia villosa and Alpinia galanga are reported for the first time for the treatment of inflammation-related diseases.

四川串珠藻属一新种

发表了四川串珠藻属一新种 ,即彭州串珠藻 (Batrachospermum pengzhouenseS .L .XieetZ .X .Shi)

中国串珠藻属的4个新记录种

记述了我国串珠藻属的 4个新记录种 ,即马赫拉串珠藻 Batrachospermum mahlacense Kum ano et Bowden-Kerby、可疑串珠藻 B.ambiguum Montagne、诺诺串珠藻 B.nonocense Kum ano et L iao和钏路串珠藻 B.kushiroenseKumano et Ohsaki

我国淡水红藻两新记录种

本文报道我国淡水红藻的两个新记录种,即弧形串珠藻Batrachospermum arcuatum Kylin emend.Vis et al.和细链珠藻Sirodotia tenuissima(Collins) Skuja ex Flint.标本均采自我国山西省。

中国串珠藻属(红藻门)的两个新种

本文纪录了淡水红藻串珠藻属Batrachospermum的二个新种。它们采自中国的亚热地区,按其形态特征,它们属于旋转组Section Contorta。采自湖北省的弯形串珠藻B.curvatum与扭曲串珠藻B.tortu-osum Kumano相似,但按其轮节、顶毛和受精丝等的形态与后者相区别。采自江西省的弯转串珠藻B.torsivum与赫罗西串珠藻B.hirosei Ratnasabapathy et Kumano相似,但轮节、中轴细胞、节丝和节间丝、果胞枝和受精丝等的大小和形态与后者相区别。

娘子关泉胶串珠藻生长和分布的季节动态

1992年 9月至 1994年 6月间 ,对分布于山西娘子关泉的胶串珠藻 (Batrachospermum gelati nosum)生长和分布的季节动态进行了研究 .定期测定水温、pH值、流速、藻体出现频度、平均盖度和藻体的一些形态特征 .结果表明 ,娘子关泉域水体温度、水体的pH值和流速季节变化幅度都不大 ;藻体出现频度和盖度有明显的季节性变化 ,从秋季到次年的春季逐渐增加 ,生长最旺盛的时期在 5月 ;藻体生长发育有明显的季节性变化规律 ,在晚秋到早夏生长良好 ,在春末夏初生长达到高峰 ,而且藻体各部分的生长和发育基本上同步 .

Contribución al conocimiento de las algas epicontinentales del SE de España II: Los rodófitos (Rhodophyceae)

Tras el estudio de 329 localidades distribuidas por todo el SE de España, especialmente en la cuenca del Segura, en el período de 1982-85, comprobamos la escasa representación de las algas rojas, sólo se reconocieron seis especies en un total de 45 puntos. Algunos táxones (Batrachospermum moniliforme, Chroothece rupestris y Audouinella pygmaea) están ligadas a las condiciones de los arroyos de aguas puras, otros, en cambio, sólo se recogen en aguas salobres interiores o próximas al mar (Compsopogon coeruleus) y, por último,existe un tercer grpo de especies más eurioicas (Chroodactylon ramosum y Audouinella violacea). Audouinella pygmaea, que proponemos como nueva combinación, no había sido citada con anterioridad para la flora algal española.

PHYLOGENETIC AFFINITIES OF "CHANTRANSIA" STAGES IN MEMBERS OF THE BATRACHOSPERMALES AND THOREALES (RHODOPHYTA)

This study evaluated the phylogenetic relationship among samples of ""Chantransia"" stage of the Batrachospermales and Thoreales from several regions of the world based on sequences of two genes-the plastid-encoded RUBISCO LSU gene (rbcL) and the nuclear SSU ribosomal DNA gene (SSU rDNA). All sequences of ""Chantransia macrospora"" were shown to belong to Batrachospermum macrosporum based on both molecular markers, confirming evidence from previous studies. In contrast, nine species are now associated with ""Chantransia pygmaea,"" including seven species of the Batrachospermales and two of the Thoreales. Therefore, the presence of ""C. macrospora"" in a stream can be considered reliable evidence that it belongs to B. macrosporum, whereas the occurrence of ""C. pygmaea"" does not allow the recognition of any particular species, since it is associated with at least nine species. Affinities of ""Chantransia"" stages to particular taxa were congruent for 70.5% of the samples comparing the rbcL and SSU analyses, which were associated with the same or closely related species for both markers. Sequence divergences have been reported in the ""Chantransia"" stage in comparison to the respective gametophyte, and this matter deserves further attention.

Distribuição de macroalgas lóticas de uma bacia de drenagem no Parque Nacional da Serra da Canastra, Minas Gerais, Brasil

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Macroalgas de riachos da Serra da Prata, leste do Estado do Paraná, Sul do Brasil

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Distribution of Rhodophyta in streams from São Paulo State, southeastern Brazil

Distribution of Rhodophyta was investigated in 172 stream segments, which were sampled from May to October in 1992-1993 and 1996-1997 in six natural regions (parts of biomes or geological areas) of São Paulo State, southeastern Brazil. Red algae occurred in 60.5 % of stream segments sampled, a high frequency in comparison with other major surveys in the world (18-65 %). 17 species of freshwater red algae were found, of which the most widespread was Batrachospermum delicatulum occurring in 17 sites of five regions. The proportion of morphological types was as follows: gelatinous filaments (62.5 %), free filaments (19 %), tufts (12.5 %) and crusts (6 %); all but free filaments can be considered as having mechanisms to tolerate stress provoked by current velocity. No significant difference was found between the frequency distributions of variables measured for all streams and for those with red algae. Rhodophyta occurred under the following conditions (means): temperature (19.0 degrees C), current velocity (48 cm s(-1)), specific conductance (74 mu S cm(-1)), turbidity (8 NTU), oxygen (67.3 %) and pH (6.9 +/- 0.7). on the basis of species composition among the regions, the following patterns were evident: 1) the number of red algal species per region ranged from 1 to 10; 2) the highest proportion of sites with red algae (65-73 %) was found in hard water regions and in Atlantic rainforest, whereas the lowest (50 %) was found in tropical rainforest; 3) more than half of the species were exclusive from a single region, whereas the higher proportion of exclusive species was in the subtropical rainforest (50 %). No combination of stream variables was clearly associated with the occurrence of red algae for the regions as a whole. Species composition for streams and rivers of São Paulo State revealed higher similarities with other tropical regions and had few species in common with freshwater red algal floras of other continents.