Phylogenetic analysis based on structural and combined analyses of Rhus s.s. (Anacardiaceae)
Por:
Andrés-Hernández A.R., Terrazas T., Salazar G., Ochoterena H.
Publicada:
1 dic 2014
Resumen:
Structural data were combined with trnL-F and internal transcribed
spacer sequences from other studies and with new sequences representing
ten additional species to clarify the phylogenetic relationships of Rhus
s.s. These data indicate that Rhus s.s and both subgenera, Rhus and
Lobadium, are monophyletic. The genus Rhus is supported as monophyletic
by the presence of red glandular hairs on the berries and inflorescence
axis, cilia on the sepals and glands on the leaf blades. Subgenus Rhus
can be identified by the presence of more than seven resin channels in
the petiole, weakly percurrent tertiary veins and a type I vascular
system in the mid-vein. Subgenus Lobadium is characterized by the
presence of short bracteoles and pedicels. This subgenus is divided into
four sections, Lobadium, Rhoeidium, Styphonia and Terebinthifolia.
Section Lobadium has trifoliate leaves; section Rhoeidium is monotypic,
including only Rhus microphylla; section Styphonia is supported by five
synapomorphies, including an incomplete marginal vein, fibres in the
petiole, a thick cuticle, two layers of palisade parenchyma and
prismatic crystals in the mesophyll; and section Terebinthifolia has
gelatinous xylary fibres in the petiole. Hypotheses about the
evolutionary changes of these characters are presented based on the
cladograms.(c) 2014 The Linnean Society of London, Botanical Journal of
the Linnean Society, 2014, 176, 452-468.
Filiaciones:
Andrés-Hernández A.R.:
Escuela de Biología, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico
Terrazas T.:
Univ Nacl Autonoma Mexico, Inst Biol, Mexico City 04510, DF, Mexico
Salazar G.:
Univ Nacl Autonoma Mexico, Inst Biol, Mexico City 04510, DF, Mexico
Ochoterena H.:
Univ Nacl Autonoma Mexico, Inst Biol, Mexico City 04510, DF, Mexico
All Open Access; Bronze
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