00000cab a22000004cb4500 IPP-00000277711 IPP 20190214150636.0 190214s2011 xx d | ||r |||||eng|| eng Chavez, Jayson G. Multigene-locus cpDNA Bayesian frameworks in resolving conflicts within Philippine endemic Gardenia Ellis (Rubiaceae) Implications to taxonomy, biodiversity and drug development 2011 The Philippine Gardenia specie form a highly heterogeneous assemblage, leading to several taxonomic transfers to other Rubiaceous genera (Ceriscoides, Discospermum, Fagerlindia, Sulitia, Vidalasia, and Villaria). Inspite of these taxonomic rearrangements, three remaining Philippine endemic Gardenia species (G. lagunensis Merr., G merrillii Elmer and G. negrosensis Merr.) still exhibit disparate features against the current circumscription of the genus and remain unsolved. In order to evaluate their true generic affinities with more certitude, we conducted separate and combined Bayesian Inference (BI) of the rps16 intron and trnT-F region sequences of cpDNA. The majority rule consensus tree of the combined dataset is more congruent with the rps16 intron tree but with much higher Posterior Probabilities (PP). The four sampled Philippine Gardenia species including G. elata appeared into two different group in the tribe Gardenieae. Gardenia elata grouped within the Gardenia clade with high support (PP=1.00), while G. lagunenis, G. merrillii, and G. negronensis nested within a clade with Rothmannia annae and R. capensis with strong support (PP=0.96). These molecular findings are congruent with morphology such as the 3:3 nodal pattern of leaves, absence of domatia, bilobed stigmas, 2-locular ovaries, globular indehiscent fruits and seeds that are embedded in a pulp forming a single mass. Therefore, we recognized three novel combinations under Rothmannia Thunb., which established for the first time the genus to the archipelago. In relation to this taxonomic breakthrough, implications on their conservation status and possible medicinal use are presented. Endemic plants Medicinal plants Alejandro, Grecebio Jonathan D. Transactions of the National Academy of Science and Technology Vol. 33, no. 1 (Jul. 2011), 111 UPD DMLP Article FI