講演・口頭発表等

本文へのリンクあり 国際会議
2022年7月26日

An Open and Continuously Updated Fern Tree of Life (FTOL)

2022 Botanical Society of America Conference
  • Joel H. Nitta
  • ,
  • Eric Schuettpelz
  • ,
  • Santiago Ramírez-Barahona
  • ,
  • Wataru Iwasaki

開催年月日
2022年7月24日 - 2022年7月27日
記述言語
英語
会議種別
口頭発表(一般)
開催地
Anchorage, AK (online)
国・地域
アメリカ合衆国

Ferns, with about 12,000 species, are the second most diverse clade of vascular plants after angiosperms. They have been the subject of numerous molecular phylogenetic studies, resulting in the publication of trees for every major clade and DNA sequences from nearly half of all species. Global fern phylogenies have been published periodically, but as molecular systematics research continues at a rapid pace, these become quickly outdated. Here, we develop a mostly automated, reproducible, open pipeline to generate a continuously updated fern tree of life (FTOL) from DNA sequence data available in GenBank. Our tailored sampling strategy combines whole plastomes (few taxa, many loci) with commonly sequenced plastid regions (many taxa, few loci) to obtain a global, species-level fern phylogeny with high resolution along the backbone and maximal sampling across the tips. We use a curated reference taxonomy to resolve synonyms in general compliance with the community-driven Pteridophyte Phylogeny Group I classification. The current FTOL includes 5,563 species, an increase of ca. 40% relative to the most recently published global fern phylogeny. Using an updated and expanded list of 65 fern fossil constraints, we find estimated ages for most families and deeper clades to be considerably older than earlier studies. FTOL and its accompanying datasets, including the fossil list and taxonomic database, will be updated on a regular basis and are available via a web portal (https://fernphy.github.io) and R packages, enabling immediate access to the most up-to-date, comprehensively sampled fern phylogeny. We anticipate FTOL will be particularly relevant for macroecological studies at regional to global scales and will inform future taxonomic systems with the most recent hypothesis of fern phylogeny. We intend for FTOL to be an open resource, meaning 1) it is available for anybody to use for their own research, and 2) anybody may contribute changes to improve FTOL for the benefit of all. Accordingly, this presentation will particularly focus on how researchers can use and contribute to FTOL.

リンク情報
共同研究・競争的資金等の研究課題
Evolutionary origins of endemic ferns on an island biodiversity hotspot
URL
https://joelnitta.github.io/botany_2022_ftol/ 本文へのリンクあり