Marcos Fabio Oliveira Marques

Riqueza de espécies de fungos conidiais em duas áreas de Mata Atlântica no Morro da Pioneira, Serra da Jibóia, BA, Brasil

The fragment of Atlantic Forest at Serra da Jiboia, municipality of Santa Terezinha, Bahia state, is a priority area for conservation. Five expeditions were undertaken every two months, from October/2005 to June/2006, in order to investigate the fungi that decompose leaf litter in this ecosystem. Thirty samples of plant debris (leaves, petioles, twigs and bark) were collected in three parcels of 10 m2, 10 m from each other, in two areas with different vegetation and humidity. Samples were washed in tap water and incubated in moist chambers for 30 days; during this period fungal structures on substrates were studied and 106 species of conidial fungi were identified. In spite of the similar number of species, there was low similarity (25%) between the communities of conidial fungi of the two areas according to Sorensens Index. These data increase our knowledge regarding the distribution and diversity of conidial fungi that colonize plant debris in the Atlantic Forest and confirm species richness in the areas studied.

Fungos anamórficos (Hyphomycetes) da Chapada Diamantina: novos registros para o Estado da Bahia e Brasil

(Anamorphic fungi (Hyphomycetes) from the Chapada Diamantina: new records from Bahia State and Brazil). The anamorphic fungi are characterized by production of asexual reproductive structures and are common inhabitants of the leaf litter, where they play an important role in decomposition. The aim of this work was to survey the anamorphic fungi associated with leaf litter from Chapada Diamantina, B ahia state. Thirteen expeditions took place from December/2002 to October/2003 to collect leaf litter. The serial washing technique with sterile distilled water followed by incubation in moist chambers was utilized to verify the presence of anamorphic fungi. Permanent slides of the reproductive structures of specimens were prepared with PVL resin and deposited at the HUEFS Herbarium. Of the 57 species of anamorphic fungi identified, nine represent new records in Bahia state, and five in Brazil, as follows: Fusariella atrovirens (Berk.) Sacc., Kiliophora ubiensis (Caneva & Rambelli) Kuthub. & Nawawi, Paraceratocladium silvestre Castaneda, Pleurotheciopsis setiformis Castaneda and Triscelophorus deficiens (Matsush.) Matsush. Comments and geographic distribution are included for the new records in Bahia; descriptions and illustrations of the new records in Brazil are presented.

Cryptophiale and Cryptophialoidea (Conidial fungi) from Brazil and keys to the genera

During a survey of microfungi associated with dead leaves in the State of Bahia, Brazil, four species of Cryptophiale Piroz. and two species of Cryptophialoidea Kuthub. & Nawawi were found. Cryptophiale guadalcanalensis Matsush. and Cryptophialoidea fasciculata Kuthub. & Nawawi are new records for the neotropics, while C. ramosa Delg.-Rodr., J. Mena & Gene is a new record for South America. Descriptions, illustrations and geographical distribution of all the fungi are provided.

The genus Stachybotrys (anamorphic fungi) in the semi-arid region of Brazil

(O genero Stachybotrys (fungos anamorficos) na regiao semi-arida do Brasil). Stachybotrys e caracterizado por apresentar conidioforos macronematicos, mononematicos simples ou ramificados, celulas conidiogenicas evidentes, terminais e fialidicas e conidios asseptados, reniformes, elipsoides a esfericos, lisos ou verrucosos, produzidos em mucilagem. No Brasil ja foram relatadas oito especies, ocorrendo no solo, no ar e em material vegetal em decomposicao. Durante investigacao de fungos conidiais associados a serapilheira em areas do semi-arido brasileiro foram encontradas nove especies: S. bisbyi (Sriniv.) G.L. Barron, S. chartarum (Ehrenb.) S. Hughes, S. globosa P. C. Misra & S. K. Srivast., S. kampalensis Hansf., S. longispora Matsush., S. nephrospora Hansf., S. nilagirica Subram., S. parvispora S. Hughes e S. verrucispora Matsush., dentre estas S. nilagirica constitui um novo registro para o Brasil. Descricoes, comentarios, distribuicao geografica e ilustracoes sao apresentadas para as especies citadas. Chave de identificacao para as especies registradas no Brasil e apresentada.

Novas ocorrências de fungos conidiais para América do Sul e Neotrópico

Durante investigacao de fungos conidiais associados a materiais vegetais em decomposicao na Serra da Jiboia, municipio de Santa Terezinha, Bahia, algumas especies interessantes foram encontradas. Endophragmiella rigidiuscula R. F. Castaneda, Murogenella lampadiformis R. F. Castaneda & W. B. Kendr., Mycoenterolobium platysporum var. platysporum Goos e Spegazzinia deightonii (S. Hughes) Subram., sao novos registros para a America do Sul, e Pseudoacrodictys viridescens (B. Sutton & Alcorn) W. A. Baker & Morgan-Jones e um novo registro para o Neotropico. Descricao, comentarios, distribuicao geografica e ilustracoes sao apresentadas para as especies.