Papers by Jucelene Rodrigues
AoB Plants, 2015
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Ciência Rural, 2011
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Genetics and Molecular Research, 2013
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Genetic Resources and Crop Evolution, 2013
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The high-altitude Southeastern Brazilian Cat-
tleya coccinea clade includes two taxonomically cha... more The high-altitude Southeastern Brazilian Cat-
tleya coccinea clade includes two taxonomically chal-
lenging species, Cattleya coccinea and Cattleya
mantiqueirae, the latter considered restricted to the
mountain range of Serra da Mantiqueira. To hypothesize
the existence of evolutionary independent lineages corre-
sponding to these species, we inferred phylogenetic rela-
tionships and described patterns of population genetic
diversity and structure of populations from six localities
based on ISSR and cpDNA sequence data. Results do not
support the species C. coccinea and C. mantiqueirae as
previously circumscribed. Most analyses recovered south-
western and northeastern groups along the two mountain
ranges, suggesting geography rather than morphology as an
important criteria for species delimitation. However, due to
the lack of information on the type locality of C. coccinea
and the topological complexity of the southwestern area,
the taxonomic circumscription of C. coccinea and C.mantiqueirae must be evaluated by additional population
sampling. We also propose that the northeastern group
comprise at least one distinct species. Also, specimens
from Lima Duarte from Serra da Mantiqueira clearly do not
belong to neither of the two groups and demand further
investigation concerning a possible hybridization scenario
of C. coccinea/C. mantiqueirae and C. brevipedunculata.
Population genetic patterns of variation are in agreement
with pollination observations for this group and with a
drift-selection model of speciation. Owing to the high
genetic differences among populations, with low levels of
variation within populations, conservation priorities should
favour protecting as many populations as possible.
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Papers by Jucelene Rodrigues
tleya coccinea clade includes two taxonomically chal-
lenging species, Cattleya coccinea and Cattleya
mantiqueirae, the latter considered restricted to the
mountain range of Serra da Mantiqueira. To hypothesize
the existence of evolutionary independent lineages corre-
sponding to these species, we inferred phylogenetic rela-
tionships and described patterns of population genetic
diversity and structure of populations from six localities
based on ISSR and cpDNA sequence data. Results do not
support the species C. coccinea and C. mantiqueirae as
previously circumscribed. Most analyses recovered south-
western and northeastern groups along the two mountain
ranges, suggesting geography rather than morphology as an
important criteria for species delimitation. However, due to
the lack of information on the type locality of C. coccinea
and the topological complexity of the southwestern area,
the taxonomic circumscription of C. coccinea and C.mantiqueirae must be evaluated by additional population
sampling. We also propose that the northeastern group
comprise at least one distinct species. Also, specimens
from Lima Duarte from Serra da Mantiqueira clearly do not
belong to neither of the two groups and demand further
investigation concerning a possible hybridization scenario
of C. coccinea/C. mantiqueirae and C. brevipedunculata.
Population genetic patterns of variation are in agreement
with pollination observations for this group and with a
drift-selection model of speciation. Owing to the high
genetic differences among populations, with low levels of
variation within populations, conservation priorities should
favour protecting as many populations as possible.
tleya coccinea clade includes two taxonomically chal-
lenging species, Cattleya coccinea and Cattleya
mantiqueirae, the latter considered restricted to the
mountain range of Serra da Mantiqueira. To hypothesize
the existence of evolutionary independent lineages corre-
sponding to these species, we inferred phylogenetic rela-
tionships and described patterns of population genetic
diversity and structure of populations from six localities
based on ISSR and cpDNA sequence data. Results do not
support the species C. coccinea and C. mantiqueirae as
previously circumscribed. Most analyses recovered south-
western and northeastern groups along the two mountain
ranges, suggesting geography rather than morphology as an
important criteria for species delimitation. However, due to
the lack of information on the type locality of C. coccinea
and the topological complexity of the southwestern area,
the taxonomic circumscription of C. coccinea and C.mantiqueirae must be evaluated by additional population
sampling. We also propose that the northeastern group
comprise at least one distinct species. Also, specimens
from Lima Duarte from Serra da Mantiqueira clearly do not
belong to neither of the two groups and demand further
investigation concerning a possible hybridization scenario
of C. coccinea/C. mantiqueirae and C. brevipedunculata.
Population genetic patterns of variation are in agreement
with pollination observations for this group and with a
drift-selection model of speciation. Owing to the high
genetic differences among populations, with low levels of
variation within populations, conservation priorities should
favour protecting as many populations as possible.