Abstract Detail

Population Genetics/Genomics

Williams, Lindsay [1], Patel, Nikisha [2], Medina, Rafael [3], Goffinet, Bernard [4], Johnson, Matthew [5].

Testing for Cryptic Species in Physcomitrium pyriforme using target capture sequencing of 800 nuclear genes .

BACKGROUND Physcomitrium is a moss genus belonging to the family Funariaceae. This moss genus has a cosmopolitan distribution, and several known methods of speciation, current evidence supporting allopolyploidy and hybridization. Physcomitrium pyriforme is a moss species belonging to this genus, which range is located in Africa, Europe and North America. Prior evidence supports a rapid radiation within this species complex and suggested that Physcomitrium pyriforme may be non-monophyletic with substantial within-species phylogenetic structure. Cryptic species are also a concern among these mosses, which are difficult to distinguish via morphological characters that may be evolutionarily labile. Our results showed that samples of Physcomitrium sorted into three predicted areas of distribution: Africa, Europe and North America, with multiple clades within each geographic region suggesting the possibility of cryptic species.
OBJECTIVES We present new target capture sequencing results for over 200 new specimens collected with assistance from the PhyscoHunt iNaturalist citizen science project in North America and Europe. Using a combination of phylogenetic inference, principal coordinate analysis (PCA) and admixture analysis, we 1) test whether phylogenetic clustering in P. pyriforme is associated with a history of reproductive isolation, 2) characterize the extent of ongoing geneflow among clusters, and 3) identify biogeographic patterns within and among clusters.

1 - Texas Tech University, Biological Sciences, 2901 Main St, Lubbock, TX, 79416, United States
2 - University of Connecticut, Department of Ecology and Evolutionary Biology, Storrs, CT, 06269, USA
3 - Universidad Complutense De Madrid, Biodiversidad, Ecología Y Evolución, C/ José Antonio Novais, 12, Botánica, Madrid, M, 28040, Spain
4 - University Of Connecticut, Department Of Ecology & Evolutionary Biology, 75 N. Eagleville Road, U-3043, Storrs, CT, 06269, United States
5 - Texas Tech University, Biological Sciences, 2901 Main Street, Ms3131, Lubbock, TX, 79409, United States

Keywords:
Physcomitrium
bryophyte
Bryophytes
Population Genetics
biogeography
cryptic species
Funariaceae.

Presentation Type: Oral Paper
Session: PGG4, Population Genetics and Genomics IV
Location: /
Date: Wednesday, July 21st, 2021
Time: 3:45 PM(EDT)
Number: PGG4004
Abstract ID:589
Candidate for Awards:Margaret Menzel Award