Abstract Detail

Systematics

Rose, Jeff [1], Kriebel, Ricardo [2], Kahan, Larissa [3], DiNicola, Alexa [3], González-Gallegos, Jesús [4], Celep, Ferhat [5], Lemmon, Emily M. [6], Lemmon, Alan R. [7], Sytsma, Kenneth [8], Drew, Bryan [9].

Sage insights into the phylogeny of Salvia (Lamiaceae): addressing nuclear and cyto-nuclear discordance.

During the past decade Next-Generation Sequencing technologies have facilitated various phylogenomic approaches to help clarify relationships which were previously difficult to resolve. These approaches are providing unprecedented taxonomic stability, but incongruence within and among genomes complicates making definitive taxonomic conclusions. Salvia L., with ~1,000 species makes up nearly 15% of the species diversity in Lamiaceae. Nearly half of the species diversity of Salvia comprises the Neotropical radiation of subg. Calosphace. Salvia has attracted great interest from biologists because of its size, taxonomic complexity, economic importance, nearly global distribution, and especially its unique pollination biology. Great progress has been achieved in discerning the placement of Salvia within Lamiaceae and in clarifying its infrageneric relationships through plastid, nuclear ribosomal, and nuclear markers. However, incomplete resolution has left open major questions regarding phylogenetic relationships among and within subgenera. Additionally, it is unclear to what extent infrageneric relationships differ between the nuclear and plastid genomes. We expand a previously published anchored hybrid enrichment dataset of ~300 nuclear loci and 35 exemplars of Salvia to over 300 accessions. We also reconstruct nearly complete plastomes for these samples from off-target reads. We use these data to examine concordance and discordance among nuclear loci and between the nuclear and plastid genomes in detail, elucidating both broad-scale and species-level relationships within Salvia, including subg. Calosphace. Although nuclear and plastid results are in general agreement, there are various instances of incongruence. These discrepancies seem to be a result of both past hybridization and incomplete lineage sorting. However, all subgenera of Salvia are supported by both plastid and nuclear data.

1 - University of Nebraska at Kearney, Biology, 2504 9th Avenue, Kearney, NE, 68849, United States
2 - University of Wisconsin, Botany, 430 Lincoln Drive, Madison, WI, 53706, USA
3 - University of Wisconsin, Botany, 430 Lincoln Drive, Madison, WI, 53706, United States
4 - CONACYT, Instituto Politécnico Nacional, CIIDIR, Durango, Durango, 34234, Mexico
5 - Bagdat Cad. 269. Sok. , Urankent Prestij Konutlar? C16 No:53, Ankara, 06200, Turkey
6 - Florida State University, Biological Science, Tallahassee, FL, 32306, USA
7 - Florida State University, Scientific Computing, Tallahassee, FL, 32306, USA
8 - University Of Wisconsin, Department Of Botany, Birge Hall, 430 Lincoln Drive, Madison, WI, 53706, United States
9 - Univ. Of NE-Kearney, Biology, 2401 11th Ave, Bhs 312, Kearney, NE, 68849, United States

Keywords:
cytonuclear discordance
Neotropics
Lamiaceae
Salvia.

Presentation Type: Oral Paper
Session: SYSTII, Systematics II: Basal Asterids & Euasterids I
Location: Virtual/Virtual
Date: Tuesday, July 20th, 2021
Time: 1:45 PM(EDT)
Number: SYSTII006
Abstract ID:587
Candidate for Awards:None