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Placement of Kuhlmanniodendron Fiaschi & Groppo in Lindackerieae (Achariaceae, Malpighiales) confirmed by analyses of rbcL sequences, with notes on pollen morphology and wood anatomy

Texto completo
Autor(es):
Groppo, Milton [1] ; Fiaschi, Pedro [2] ; Faria Salatino, Maria Luiza [3] ; Tapias Ceccantini, Gregorio Cardoso [3] ; Ribeiro dos Santos, Francisco de Assis [4] ; Verola, Christiano Franco [5] ; Antonelli, Alexandre [6]
Número total de Autores: 7
Afiliação do(s) autor(es):
[1] Univ Sao Paulo, Dept Biol, Fac Filosofia Ciencias & Letras Ribeirao Preto, BR-14051901 Sao Paulo - Brazil
[2] Virginia Commonwealth Univ, Richmond, VA 23284 - USA
[3] Univ Sao Paulo, Dept Bot, Inst Biociencias, BR-05508090 Sao Paulo - Brazil
[4] Univ Estadual Feira de Santana, Dept Ciencias Biol, BR-44036900 Feira De Santana, BA - Brazil
[5] Univ Estadual Campinas, Dept Bot, Inst Biol, BR-13085970 Sao Paulo - Brazil
[6] Univ Gothenburg, Dept Plant & Environm Sci, S-40530 Gothenburg - Sweden
Número total de Afiliações: 6
Tipo de documento: Artigo Científico
Fonte: PLANT SYSTEMATICS AND EVOLUTION; v. 286, n. 1-2, p. 27-37, MAY 2010.
Citações Web of Science: 2
Resumo

The phylogenetic placement of Kuhlmanniodendron Fiaschi \& Groppo (Achariaceae) within Malpighiales was investigated with rbcL sequence data. This genus was recently created to accommodate Carpotroche apterocarpa Kuhlm., a poorly known species from the rainforests of Espirito Santo, Brazil. One rbcL sequence was obtained from Kuhlmanniodendron and analyzed with 73 additional sequences from Malpighiales, and 8 from two closer orders, Oxalidales and Celastrales, all of which were available at Genbank. Phylogenetic analyses were carried out with maximum parsimony and Bayesian inference; bootstrap analyses were used in maximum parsimony to evaluate branch support. The results confirmed the placement of Kuhlmanniodendron together with Camptostylus, Lindackeria, Xylotheca, and Caloncoba in a strongly supported clade (posterior probability = 0.99) that corresponds with the tribe Lindackerieae of Achariaceae (Malpighiales). Kuhlmanniodendron also does not appear to be closely related to Oncoba (Salicaceae), an African genus with similar floral and fruit morphology that has been traditionally placed among cyanogenic Flacourtiaceae (now Achariaceae). A picrosodic paper test was performed in herbarium dry leaves, and the presence of cyanogenic glycosides, a class of compounds usually found in Achariaceae, was detected. Pollen morphology and wood anatomy of Kuhlmanniodendron were also investigated, but both pollen (3-colporate and microreticulate) and wood, with solitary to multiple vessels, scalariform perforation plates and other features, do not seem to be useful to distinguish this genus from other members of the Achariaceae and are rather common among the eudicotyledons as a whole. However, perforated ray cells with scalariform plates, an uncommon wood character, present in Kuhlmanniodendron are similar to those found in Kiggelaria africana (Pangieae, Achariaceae), but the occurrence of such cells is not mapped among the angiosperms, and it is not clear how homoplastic this character could be. (AU)

Processo FAPESP: 06/03170-0 - Estudos filogenéticos e sistemáticos em Rutaceae: filogenia e delimitação de Galipeinae (Galipeae) baseados em seqüências do DNA do núcleo e cloroplasto
Beneficiário:Milton Groppo Júnior
Linha de fomento: Auxílio à Pesquisa - Apoio a Jovens Pesquisadores
Processo FAPESP: 00/07401-0 - Revisão taxonômica do gênero Hortia Vand. (Rutaceae) e estudo filogenético da subtribo Toddaliinae
Beneficiário:Milton Groppo Júnior
Linha de fomento: Bolsas no Brasil - Doutorado