Amazon comprises a vast variety of ecosystems, including savannah-like Canga barrens
that evolved on iron-lateritic rock plateaus of the Carajás Mountain range. Individual Cangas
are enclosed by the rain forest, indicating insular isolation that enables speciation and plant
community differentiation. To establish a framework for the research on natural history and
conservation management of endemic Canga species, seven chloroplast DNA loci and an
ITS2 nuclear DNA locus were used to study natural molecular variation of the red flowered …

Results I. cavalcantei and I. marabaensis belong to a lineage within the clade Murucoides.
To decipher the phylogenetic affinities of I. cavalcantei and I. marabaensis using molecular
markers, partial coding sequences of seven genes encoded by the plastomes (cpDNA) were
determined and compared to respective sequences computationally extracted from the
assembled and sequenced plastomes of twenty six Ipomoea species 15. Maximum
parsimony, maximum likelihood and Bayesian likelihood analyses of the concatenated …