The nomenclature of two hybrid taxa in Carex sect. Vesicariae (Cyperaceae) currently assigned as Carex rostrata var. borealis and Carex stenolepis

In a recent study of Carex sect. Vesicariae in northern Europe, two hybrid species were identified using microsatellite markers. Whereas both taxa already have names associated with them, we find that these names are not appropriate for use. In this study, the taxon previously described as C. rostrata var. borealis is raised to species level as the hybrid taxon Carex ×saamica (from C. rostrata × C. rotundata). We furthermore show that the name C. stenolepis, after designation of a lectotype, becomes a synonym of C. rostrata, and hence accept C. ×grahamii as the priority name for the hybrid taxon (from C. saxatilis × C. vesicaria) previously denoted as C. stenolepis. Arguments for these choices are given. Four other species names that have been assigned to the two hybrid taxa are discussed. Types are identified or designated for the names C. rostrata var. borealis, C. stenolepis, and C. ×grahamii. A key to the hybrid taxa and their parents is given.

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Assessment of the Structure and Diversity of Latvian Acer platanoides Populations Using Cross-Species Nuclear Microsatellite Markers

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences. ◽

10.2478/prolas-2021-0038 ◽

2021 ◽

Vol 75 (4) ◽

pp. 254-260

Author(s):

Dainis Edgars Ruņģis ◽

Baiba Krivmane

Keyword(s):

Genetic Diversity ◽

Microsatellite Markers ◽

Genetic Resource ◽

Molecular Data ◽

Initial Assessment ◽

Northern Europe ◽

Acer Platanoides ◽

Norway Maple ◽

Wide Range ◽

Nuclear Microsatellite

Abstract Acer platanoides L. (Norway maple) is the most widespread native maple species in Europe, with a distribution from south and central Europe to northern Europe and Scandinavia. Acer platanoides is widespread throughout the territory of Latvia, and is mainly found in mixed broadleaf and conifer stands. The genetic diversity and differentiation of Latvian A. platanoides populations was analysed. Sampled populations were located throughout the territory of Latvia, and were selected to represent a range of ecological conditions, with differing levels of anthropogenic impact. A total of 496 individuals from 21 populations were analysed with eight microsatellite markers, which were developed from related Acer species. The obtained molecular data revealed a moderate level of polymorphism, and the analysed Latvian A. platanoides populations were moderately differentiated. This study provides an initial assessment of the genetic diversity and differentiation of Latvian A. platanoides populations, and is also one of the first reports of the analysis of A. platanoides populations using microsatellite markers. The results can be utilised to define A. platanoides genetic resource stands to ensure conservation of a wide range of germplasm.

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Search for evidence of introgression of wheat (Triticum aestivum L.) traits into sea barley (Hordeum marinum s.str. Huds.) and bearded wheatgrass (Elymus caninus L.) in central and northern Europe, using isozymes, RAPD and microsatellite markers

Theoretical and Applied Genetics ◽

10.1007/s001220100635 ◽

2001 ◽

Vol 103 (2-3) ◽

pp. 191-196 ◽

Cited By ~ 17

Author(s):

R. Guadagnuolo ◽

D. Savova-Bianchi ◽

J. Keller-Senften ◽

F. Felber

Keyword(s):

Triticum Aestivum ◽

Microsatellite Markers ◽

Triticum Aestivum L ◽

Northern Europe ◽

Elymus Caninus

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A Survey of Phytophthora spp. in Midwest Nurseries, Greenhouses, and Landscapes

Plant Disease ◽

10.1094/pdis-07-12-0689-re ◽

2013 ◽

Vol 97 (5) ◽

pp. 635-640 ◽

Cited By ~ 17

Author(s):

A. J. Leonberger ◽

C. Speers ◽

G. Ruhl ◽

T. Creswell ◽

J. L. Beckerman

Keyword(s):

Host Range ◽

Ribosomal Dna ◽

Internal Transcribed Spacer ◽

Parental Species ◽

Its Region ◽

Cloning And Sequencing ◽

Hybrid Species ◽

Phytophthora Spp ◽

Two Hybrid

A survey of nurseries, greenhouses, and landscapes was conducted from 2006 to 2008 in order to determine the prevalence and diversity of Phytophthora spp. From sites in Iowa, Michigan, Ohio, and, predominantly, Indiana, 121 Phytophthora isolates were obtained from 1,657 host samples spanning 32 host genera. Based on sequence of the internal transcribed spacer (ITS) region of the ribosomal DNA, 11 Phytophthora spp. and two hybrid species were identified. A majority of the isolates were P. citricola (35.9%) or P. citrophthora (27.4%). Six isolates were confirmed as hybrids (four of P. cactorum × hedraiandra and two of P. nicotianae × cactorum) by cloning and sequencing the ITS region. Three P. cactorum × hedraiandra isolates were obtained from the same site, from three Rhododendron spp., which are known hosts to the parental species. The fourth isolate, however, was recovered out of a different location in a Dicentra sp., which is not a known host to either parental species, suggesting an expansion of host range of the hybrid isolate as compared with either parental species.

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