Abstract Detail

Systematics

Khanal, Deva Raj [1], Latvis, Maribeth [2].

Building a phylogenetic framework for genus Salsola and tribe Salsoleae to understand the role of hybridization and polyploidy in plant invasions.

Invasive species are a serious issue in the United States, costing the country $120 billion annually. Understanding the phylogenetic history of invading lineages provides a useful framework to infer the number and timing of plant invasions, as well as their ability to hybridize with closely related species. Salsola (Amaranthaceae) is a taxonomically complex genus comprising either 25-27 species or 130-150 species depending on the authority. As broadly circumscribed, this cosmopolitan genus is mostly found in arid and semi-arid regions and includes several notorious invasive species in North America, including prickly Russian thistle (the Salsola tragus complex). There is some evidence of hybridization, introgression, and shifts in ploidy in these invasive species, and there is a need for a much-improved phylogenetic understanding of the genus and tribe to understand how pervasive these processes are and their consequences for the process of invasion. We will present an improved phylogeny of tribe Salsoleae and genus Salsola using high throughput sequencing of the Angiosperms353 probe kit, as well as species trees methods for phylogenetic reconstruction, and we outline future directions for investigating variation in ploidy and gene flow.

1 - South Dakota State University, Natural Resource Management , McFadden Biostress Laboratory 144 Natural Resource Management-Box 2140B University Station, Brookings, SD, 57007, United States
2 - South Dakota State University, Department Of Natural Resource Management, 1390 College Avenue, Box 2140B, South Dakota State University , Brookings , SD, 57006, United States

Keywords:
Salsola
high throughput sequencing
Angiosperms353
species tree methods
invasive species
Consortium for Plant INvasion Genomics (CPING).

Presentation Type: Oral Paper
Session: COOLII, ASPT Cooley Award Talks II
Location: Virtual/Virtual
Date: Wednesday, July 21st, 2021
Time: 12:30 PM(EDT)
Number: COOLII001
Abstract ID:616
Candidate for Awards:George R. Cooley Award