Abstract Detail

Systematics

Larridon, Isabel [1], Zuntini, Alexandre R. [2], Barrett, Russell [3], Wilson, Karen [4], Bruhl, Jeremy J. [5], Goetghebeur, Paul [6], Baker, William J. [7], Brewer, Grace E. [8], Epitawalage, Niroshini [8], Fairlie, Isabel [9], Forest, Félix [7], Kikuchi, Izai [10], Pokorny, Lisa [11], Semmouri, Ilias [12], Spalink, Daniel [13], Simpson, David A. [8], Muasya, A. Muthama [14], Roalson, Eric [15].

Resolving generic limits in Cyperaceae tribe Abildgaardieae using targeted sequencing.

Morphological characterisations of genera in Cyperaceae tribe Abildgaardieae have been highly problematic and the subject of much debate. Earlier molecular phylogenetic studies based on Sanger sequencing and a limited sampling have indicated that several generic circumscriptions are not monophyletic. Here, we provide the first molecular phylogenetic hypothesis for tribe Abildgaardieae using targeted sequencing data obtained with the Angiosperms353 enrichment panel for 50 species. We test whether recent taxonomic decisions made based on Sanger sequencing data are validated by our targeted sequencing data. Our results support lumping the small African genus Nemum into the large genus Bulbostylis, and the monotypic genus Crosslandia into the diverse genus Fimbristylis. Also, our results support the recent publication of the new genus Zulustylis for two African species previously placed in Fimbristylis. Furthermore, we investigate the phylogenetic placement of recently described tropical Australian endemic species of Actinoschoenus, which are here recognised as the new morphologically cryptic genus Scleroschoenus. Based on the targeted sequencing phylogenetic hypothesis and supported by morphological data, we recognise the genus Abildgaardia. The placement in tribe Abildgaardieae of two monotypic genera Nelmesia and Trichoschoenus, which are only known from their type collections from the Democratic Republic of Congo and Madagascar, respectively, are also discussed. New combinations and lectotypifications are made in Abildgaardia, Actinoschoenus, Arthrostylis and Scleroschoenus.

1 - Royal Botanic Gardens Kew, Royal Botanic Gardens Kew, Royal Botanic Gardens Kew, Richmond, TW9 3AE, United Kingdom
2 - Royal Botanic Gardens, Kew, Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Richmond, Surrey, TW93AE, UK
3 - Royal Botanic Gardens and Domain Trust, National Herbarium of New South Wales, Mrs Macquaries Road, Sydney, New South Wales , 2000, Australia
4 - Royal Botanic Gardens & Domain Trust, 6 Birchgrove Road, Balmain, NSW, 2041, Australia
5 - University of New England, Botany, School of Environmental and Rural Science, Armidale, New South Wales , 2351, Australia
6 - Ghent University, Department Of Biology, K.L. Ledeganckstraat 35, Gent, 9000, Belgium
7 - Royal Botanic Gardens, Kew, Comparative Plant and Fungal Biology, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AE, United Kingdom
8 - Royal Botanic Gardens, Kew, Royal Botanic Gardens Kew, Richmond, Surrey, TW93AE, UK
9 - University of Sheffield, Department of Animal and Plant Sciences, Alfred Denny Building, Western Bank, Sheffield, S10 2TN, UK
10 - Universiteit Leiden, Hortus botanicus Leiden, PO Box 9500, Leiden, 2300 RA, The Netherlands
11 - Centre For Plant Biotechnology And Genomics UPM-INIA, Computational/Systems Biology And Genomics Program, Autopista M-40, Km 38, Pozuelo De Alarc�n, 28223, Spain
12 - Ghent University, Faculty of Bioscience Engineering, Laboratory of Environmental Toxicology and Aquatic Ecology, Ghent, 9000, Belgium
13 - Texas A&M University, Ecosystem Science And Management, 2138 TAMU, College Station, TX, 77802, United States
14 - University of Cape Town, Bolus Herbarium, Department of Biological Sciences, Private Bag X3, Rondebosch, Cape Town, 7701, South Africa
15 - Washington State University, School Of Biological Sciences, Abelson Hall 339, Pullman, WA, 99164, United States

Keywords:
Abildgaardieae
Angiosperms353
Cyperaceae
photosynthesis
generic circumscription
Targeted sequencing.

Presentation Type: Oral Paper
Session: SYS4, Systematics IV: Monocots part B to Rosids part A
Location: Virtual/Virtual
Date: Thursday, July 30th, 2020
Time: 12:45 PM
Number: SYS4002
Abstract ID:272
Candidate for Awards:None