Evolution of Stem and Leaf Structural Diversity: a Case Study in Lychnophorinae (Asteraceae)

Autor(es)

Lusa, Makeli Garibotti ^{[1, 2]} ; Patrice Loeuille, Benoit Francis ^[3] ; Ciccarelli, Daniela ^[4] ; Appezzato-da-Gloria, Beatriz ^[2]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Biol, Programa Posgrad Biol Vegetal, BR-13083970 Campinas, SP - Brazil

^[2] Univ Fed Santa Catarina, Ctr Ciencias Biol, Dept Bot, BR-88040900 Florianopolis, SC - Brazil

^[3] Univ Fed Pernambuco, Ctr Ciencias Biol, Dept Bot, BR-50670901 Recife, PE - Brazil

^[4] Univ Pisa, Dipartimento Biol, Via Luca Ghini 13, I-56126 Pisa - Italy

• Tipo de documento: Artigo Científico
• Fonte: BOTANICAL REVIEW; v. 84, n. 3, p. 203-241, SEP 2018.
• Citações Web of Science: 4

Resumo

Lychnophorinae occurs mainly in campos rupestres and cerrados of the Cerrado Domain (Brazil) and are species subject to fire occurrences and intense solar radiation, occupying acid and well-drained soils. Informative characters on the taxonomy of this subtribe were studied considering the leaf and stem morphology and anatomy. In addition, putative synapomorphies and features that probably determined the success of these species in occupying these habitats were identified. Samples of leaves and stems of 52 species were analyzed using usual techniques in plant anatomy. The reconstruction of ancestral states of characters was made in parsimony analysis using the phylogeny established for Lychnophorinae. The analyses indicated two distinct types of stems and a wide variation in foliar features, with the possible occurrence of three synapomorphies for the stems and 11 for the leaves. Adaptive pressures of restricted environments, where most species live, probably directed the evolution of morphological and anatomical diversity in Lychnophorinae. (AU)

• Processo FAPESP: 10/51454-3 - Estudos morfoanatômicos, metabolômicos e moleculares como subsídios à sistemática de espécies de Asteraceae e acesso ao seu potencial farmacológico
• Beneficiário: Beatriz Appezzato da Glória
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 10/02085-5 - Morfoanatomia e fitoquímica de espécies da subtribo Lychnophorinae (Asteraceae: Vernonieae) como subsídios para a análise filogenética do grupo
• Beneficiário: Makeli Garibotti Lusa
• Modalidade de apoio: Bolsas no Brasil - Doutorado