Phylogenetic relationships of Cyrtandromoea and Wightia revisited: A new tribe in Phrymaceae and a new family in Lamiales

作  者:Liu B, Tan YH, Liu S, Olmstead RG, Min DZ, Chen ZD, Joshee N, Vaidya BN, Chung RCK, Li B*
影响因子:4.04
刊物名称:Journal of Systematics and Evolution
出版年份:2019
卷:  期:  页码:DOI: 10.1111/jse.12513

论文摘要:

The familial placements of Cyrtandromoea Zoll. and Wightia Wall., two small and enigmatic SouthEast Asian genera, have long been controversial in Lamiales. Here we adopt a twostep approach to resolve their phylogenetic relationships. We initially reconstructed a largescale phylogeny of Lamiales using six chloroplast markers (atpBmatKndhFpsbBTNHrbcL, and rps4). The results showed that both Cyrtandromoea and Wightiaemerged in the LMPO clade, including Lamiaceae, Mazaceae, Phrymaceae, Paulowniaceae, and Orobanchaceae. Based on the second set of six chloroplast markers (atpBmatKndhFrbcLrps16, and trnLF) and two nuclear ribosomal regions (external transcribed spacer and internal transcribed spacer) for the analyses focusing on the LMPO clade, our results revealed that Cyrtandromoea was consistently nested within Phrymaceae, whereas Wightiawas supported as sister to Phrymaceae by the chloroplast DNA dataset or sister to Paulowniaceae by the nuclear ribosomal DNA dataset. Morphological and anatomical evidence fully supports the inclusion of Cyrtandromoea in Phrymaceae, and an updated tribal classification is done for Phrymaceae with five tribes, that is, Cyrtandromoeeae Bo Li, Bing Liu, Su Liu & Y. H. Tan, trib. nov., Diplaceae Bo Li, Bing Liu, Su Liu & Y. H. Tan, trib. nov., Leucocarpeae, Mimuleae, and Phrymeae. The conflicting phylogenetic position of Wightia indicated by different genome markers results in difficulty placing the genus in either Phrymaceae or Paulowniaceae. Considering the distinct morphological differences between Wightia and other families in the LMPO clade, we here propose a new family, Wightiaceae Bo Li, Bing Liu, Su Liu & Y. H. Tan, fam. nov., to accommodate it, which is the 26th family recognized in Lamiales.

全文链接:https://onlinelibrary.wiley.com/doi/full/10.1111/jse.12513