Morphological and molecular investigations of Gagea (Liliaceae) in southeastern Kazakhstan with special reference to putative altitudinal hybrid zones

Peterson, Angela; Harpke, Dörte; Levichev, Igor G.; Beisenova, Saltanat; Schnittler, Martin; Peterson, Jens

doi:10.1007/s00606-016-1313-7

Cited by 12 publications

(18 citation statements)

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“…Of them, 107 accessions (28 species; originating from herbarium vouchers; for details see Appendix Table ) were newly investigated here, including DNA isolation. Information on species distribution is based on data published by Ali and Levichev (), Levichev and Jezniakowsky (2008), Meusel et al (), Tison et al (), Xinqi and Turland (), and own data of Peterson et al, ; Peterson et al, (for details, see Appendix Table ). All new samples used in this paper were provided as herbarium material and were collected before 2015.…”

Section: Methodsmentioning

confidence: 99%

“…The genus represents a good case study to investigate the spatial and temporal relationships among southwestern Asia and its neighboring areas, for several reasons: (a) A high species richness (76%; Levichev, ) occurs in southwestern Asia. (b) A relevant diversity (about 100 species: Levichev, ; Peterson et al, ) can be found in the IT hot spot areas of western Thian Shan and the Pamir Alai. (c) Most of species (about 135 species) are narrow endemic to southwestern Asia (Levichev, ).…”

Section: Introductionmentioning

confidence: 99%

“…While it has been shown that speciation in Gagea is influenced by polyploidization and recent intrasectional hybridization (e.g., Peterson et al, ; Peterson, Levichev, Peterson, Harpke, & Schnittler, ; Peterson et al, ; Tison et al, ; Zarrei et al, ), the impact of colonization processes and divergence time on the diversification in the genus is still unclear. Only for two sections of the genus, further speculations about age and origin were published.…”

Section: Introductionmentioning

confidence: 99%

“…However, our extensive molecular and morphological studies had shown that hybridization takes place only on intrasectional level, between closely related species. This phenomenon is usually restricted to small areas of a specific phytogeographic region (Peterson et al, , , ; Peterson, John, Koch, & Peterson, ; Tison et al, ). As a consequence, we assume that ITS, biparentally inherited, is a suitable marker for our purpose, well reflecting phylogenetic relationships of major lineages (sections) of the genus.…”

Section: Introductionmentioning

confidence: 99%

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A pre‐Miocene Irano‐Turanian cradle: Origin and diversification of the species‐rich monocot genus Gagea (Liliaceae)

Peterson

Harpke

Peterson

et al. 2019

Ecology and Evolution

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The Irano‐Turanian (IT) floristic region is considered an important center of origin for many taxa. However, there is a lack of studies dealing with typical IT genera that also occur in neighboring areas. The species‐rich monocot genus Gagea Salisb. shows a center of diversity in IT region and a distribution in adjacent regions, therefore representing a good study object to investigate spatial and temporal relationships among IT region and its neighboring areas (East Asia, Euro‐Siberia, Himalaya, and Mediterranean). We aimed at (a) testing the origin of the genus and of its major lineages in the IT region, (b) reconstructing divergence times, and (c) reconstructing colonization events. To address these problems, sequences of the ribosomal DNA internal transcribed spacer (ITS) region of 418 individuals and chloroplast intergenic spacers sequences (psbA‐trnH, trnL‐trnF) of 497 individuals, representing 116 species from all sections of the genus and nearly its entire distribution area were analyzed. Divergence times were estimated under a random molecular clock based on nrITS phylogeny, which was the most complete data set regarding the representation of species and distribution areas. Ancestral distribution ranges were estimated for the nrITS data set as well as for a combined data set, revealing that Gagea most likely originated in southwestern Asia. This genus first diversified there starting in the Early Miocene. In the Middle Miocene, Gagea migrated to the Mediterranean and to East Asia, while migration into Euro‐Siberia took place in the Late Miocene. During the Pleistocene, the Arctic was colonized and Gagea serotina, the most widespread species, reached North America. The Mediterranean basin was colonized multiple times from southwestern Asia or Euro‐Siberia. Most of the currently existing species originated during the last 3 Ma.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A pre‐Miocene Irano‐Turanian cradle: Origin and diversification of the species‐rich monocot genus Gagea (Liliaceae)

Peterson

Harpke

Peterson

et al. 2019

Ecology and Evolution

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“…Greuter (Peruzzi et al 2008) it is assigned to section Anthericoides A. Terracc. This monophyletic section (e.g., Peruzzi et al 2008; Peterson et al 2008, 2011, 2016; Zarrei et al 2009) within the genus Gagea (incl . Lloydia Rchb.…”

Section: Introductionmentioning

confidence: 99%

Studies of life history of Gagea graeca (Liliaceae) based on morphological and molecular methods

et al. 2017

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BackgroundWe studied the life history of Gagea graeca (L.) A. Terracc. (sect. Anthericoides) by field surveys on the Greek island of Crete, including quantitative analyses of 405 individuals, estimation of resource allocation by measuring the nitrogen content of different plant organs, assessing seed set and recording genetic diversity via amplified fragment length polymorphism (AFLP) analyses. In contrast to most species of the genus G. graeca seems to be a short-lived perennial, developing several characters that are rather typical for annual plants.ResultsAlthough seed set varies largely, flowering plants produce many (68 ± 79) small, flattened seeds (mean weight 73 ± 22 µg) in comparison to a single bulbil. If measured as nitrogen content of the respective plant parts, investment in seeds (25%) is much higher than that in bulbils (4%). In addition, the threshold for flower formation (expressed as bulb size where 50% of the plants form the respective structure) is with 2.17 ± 0.05 mm lower than that for bulbils with 2.80 ± 0.16 mm. This is in accordance with AFLP analyses revealing predominantly sexual reproduction (only 9.1% of 110 investigated plants belonged to clones).ConclusionIn the genus Gagea early, predominantly sexual reproduction seems to be characteristic for species from arid habitats, coupled with a low proportion of clonal plants.

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Mapping Asia Plants: Current status of floristic information for Central Asian flora

Tojibaev

Hisoriev

et al. 2020

Global Ecology and Conservation

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Morphological and molecular investigations of Gagea (Liliaceae) in southeastern Kazakhstan with special reference to putative altitudinal hybrid zones

Cited by 12 publications

References 57 publications

A pre‐Miocene Irano‐Turanian cradle: Origin and diversification of the species‐rich monocot genus Gagea (Liliaceae)

A pre‐Miocene Irano‐Turanian cradle: Origin and diversification of the species‐rich monocot genus Gagea (Liliaceae)

Studies of life history of Gagea graeca (Liliaceae) based on morphological and molecular methods

Mapping Asia Plants: Current status of floristic information for Central Asian flora

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