Enlarged and highly repetitive plastome of Lagarostrobos and plastid phylogenomics of Podocarpaceae
作者： Edi Sudianto , Chung-Shien Wu , Lars Leonhard , William F. Martin , Shu-Miaw Chaw
DOI: 10.1016/J.YMPEV.2018.12.012
关键词:
摘要: Podocarpaceae is the largest family in cupressophytes (conifers II), but its plastid genomes (plastomes) are poorly studied, with plastome data currently existing for only four of 19 Podocarpaceous genera. In this study, we sequenced and assembled complete plastomes from representatives eight additional genera, including Afrocarpus, Dacrydium, Lagarostrobos, Lepidothamnus, Pherosphaera, Phyllocladus, Prumnopitys, Saxegothaea. We found that a monotypic genus native to Tasmania, has (151,496 bp) among any studied date. Plastome enlargement Lagarostrobos coincides increased intergenic spacers, repeats, duplicated genes. Among Podocarpaceae, most rearranged plastome, substitution rates modest. Plastid phylogenomic analyses based on 81 genes clarify positions previously conflicting Tree topologies firmly support division into two sister clades: (1) Prumnopityoid clade (2) containing Podocarpoid, Dacrydioid, The Phyllocladus nested within thus familial status Phyllocladaceae not supported.
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