scholarly journals Discovery of New Ohbayashinema spp. (Nematoda: Heligmosomoidea) in Ochotona princeps and Ochotona cansus (Lagomorpha: Ochotonidae) From Western North America and Central Asia, with considerations of Historical Biogeography

2010 ◽  
Vol 96 (3) ◽  
pp. 569-579 ◽  
Author(s):  
M-C. Durette-Desset ◽  
K. E. Galbreath ◽  
E. P. Hoberg
Keyword(s):  
North America ◽  
Central Asia ◽  
Historical Biogeography ◽  
Western North America ◽  
Ochotona Princeps

Species diversification of the coniferous pathogenic fungal genus Coniferiporia (Hymenochaetales, Basidiomycota) in association with its biogeography and host plants

2021 ◽  
Author(s):  
Xue-Wei Wang ◽  
Ji-Hang Jiang ◽  
Shi-Liang Liu ◽  
Yusufjon Gafforov ◽  
Li-Wei Zhou
Keyword(s):  
North America ◽  
Eastern Europe ◽  
Central Asia ◽  
Host Plants ◽  
Geographic Origin ◽  
Thuja Plicata ◽  
Western North America ◽  
Posterior Density ◽  
Highest Posterior Density ◽  
Fungal Genus

Coniferiporia, belonging to Hymenochaetaceae and recently segregated from Phellinidium, is a wood-inhabiting fungal genus with three species, each having a specific geographic distribution and a strong host specificity as a forest pathogen of coniferous trees. In this study, the species diversity of Coniferiporia is further clarified with the aid of a wider sampling and multilocus-based phylogenetic analysis, which reveals a new species C. uzbekistanensis. The molecular clock and ancestral geographic origin analyses indicates that the ancestor of Coniferiporia emerged in one of the Pinaceae and Cupressaceae and then jumped to the other plant family originated in eastern Eurasia 17.01 million years ago (Mya) (95% highest posterior density: 9.46–25.86 Mya) and later extended its distribution to western North America, Central Asia and eastern Europe. Coniferiporia sulphurascens speciated on Pinaceae in eastern Eurasia 8.78 Mya (9.46–25.86 Mya) and then extended its distribution to western North America and eastern Europe. Coniferiporia qilianensis and C. uzbekistanensis speciated on Juniperus przewalskii in eastern Eurasia 3.67 Mya (0.36–8.02 Mya) and on J. polycarpos in Central Asia 4.35 Mya (0.94–8.37 Mya), respectively. The speciation event of C. weirii occurred 4.45 Mya (0.77–9.33 Mya) right after the emergence of its host, the endemic Cupressaceae species Thuja plicata, and soon after, this fungus evolved to also inhabit another endemic Cupressaceae species Calocedrus decurrens. In summary, this study for the first time unambiguously clarified and timed the adaptive evolutionary event of Coniferiporia in association with its biogeography and host plants.

Allium yamadagensis (Amaryllidaceae) a new species from Turkey

Phytotaxa ◽  
2019 ◽  
Vol 400 (1) ◽  
pp. 31 ◽  
Author(s):  
GÜLNUR EKŞI ◽  
HASAN YILDIRIM
Keyword(s):  
New Species ◽  
North America ◽  
Central Asia ◽  
Northern Hemisphere ◽  
Mediterranean Region ◽  
Molecular Data ◽  
Western North America ◽  
Number Of Species ◽  
Phylogenetic Studies ◽  
A New Species

Allium Linneaus (1753: 294) is one of the largest monocot genera with about 900 species (Govaerts et al. 2019) naturally distributed throughout the northern hemisphere (Stearn 1978, 1992, Fritsch & Keusgen 2006, Friesen et al. 2006, Fritsch & Abbasi 2008). The main centre of biodiversity occurs in Southwestern and Central Asia and the Mediterranean region, a smaller center is found in western North America (Friesen et al. 2006, Nguyen et al. 2008). The genus is characterized by bulbs enclosed in membranous, fibrous or reticulate tunics, free or basally connate tepals and often a subgynobasic style (Friesen et al. 2006). The genus Allium is a member of Amaryllidaceae subfam. Allioideae, tribe Allieae (APGIII 2009, Chase & Reveal 2009). Recent phylogenetic studies based on molecular data were combined with morphology, anatomy, and cytology resulting in new proposals for sectional and subsectional relationships (Linne von Berg et al. 1996, Dubouzet & Shinoda 1999, Friesen et al. 2000, 2006, Gurushidze et al. 2008, Nguyen et al. 2008, Li et al. 2010, Choi et al. 2012). The most recent Allium classification includes 15 subgenera and 80 sections (Friesen et al. 2006). Allium is a taxonomically quite complex and has unresolved nomenclatural problems. In the last decades, many Allium taxa were newly described for Turkey and the number of species known to occur in the country is approximately 200, classified into 15 sections, ca. one-third which being endemic (Kollmann 1984, Koyuncu 2012, Özhatay & Kandemir 2014, Ekşi et al. 2015, 2016, Duman et al. 2017, Fırat et al. 2018).

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