Contribution to chromosome numbers and phylogeny of Turkish Vincetoxicum Wolf (Apocynaceae, Asclepiadoideae)

Güven, Seher; Makbul, Serdar; Çoşkunçelebi, Kamil

doi:10.5852/ejt.2019.590

Cited by 3 publications

(3 citation statements)

References 24 publications

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“…Of these, the newly described species ( Vincetoxicum anatolicum sp. nov.) was sequenced by us and sequences of the remaining 25 species previously analysed by Güven et al (2019) were retrieved from GenBank <http://www.ncbi.nlm.nih.gov>. As outgroup, three specimens belonging to three different Asclepiadoideae species ( Cionura erecta L. (Marsdenieae Benth.…”

Section: Methodsmentioning

confidence: 99%

“…The support values on branches indicate Jackknife (JK) and posterior probability (PP) higher than 50% and 0.7, respectively. Clade designations correspond to Güven et al 2019. Refer to Appendix 2 for accession abbreviations.…”

Section: Taxonomymentioning

confidence: 99%

“…In Turkey, members of Vincetoxicum are found in various habitats such as dry river valleys, open rocky slopes, steppes and mountain slopes to shrublands and Quercus ‐dominated forests (Browicz 1978). Recent evaluations of Turkish Vincetoxicum have revealed that the morphology of flowers (Güven 2017) and pollen (Güven et al 2015) supplies valuable information for delimiting taxa at the specific level, while cytological and molecular data provide only limited information for solving systematic problems (Güven et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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A new Vincetoxicum (Apocynaceae) species from Eastern Anatolia and its relationship based on biosystematic properties

Güven

Çoşkunçelebi

Makbul

2021

Nordic Journal of Botany

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Vincetoxicum anatolicum (Apocynaceae), a new species from eastern Turkey, is described and illustrated. Additionally, a revised key for Turkish Vincetoxicum is provided and the seed micromorphology and palynological properties of the new species is described for the first time. The new species is morphologically similar to V. fuscatum and V. parviflorum, but it can be distinguished by its 8–12 mm long peduncles, yellow to light brown corolla with crisped hairs on the inner surface, and ovate corona segments partly fused with intermediate teeth, as well as by palynological properties like obovate pollinia and rugulate exine sculpture. However, phylogenetic analyses showed that the new species, attributed to the ‘Vincetoxicum s.str. clade', is clustered in the same subclade as V. funebre, V. rehmannii and V. scandens rather than with the species morphologically most similar to it.

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Section: Methodsmentioning

confidence: 99%

Section: Taxonomymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A new Vincetoxicum (Apocynaceae) species from Eastern Anatolia and its relationship based on biosystematic properties

Güven

Çoşkunçelebi

Makbul

2021

Nordic Journal of Botany

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Molecular phylogenetic and morphological analyses support recognition of a new species of Vincetoxicum (Apocynaceae, Asclepiadoideae) from eastern Thailand

Kidyoo

2022

Preprint

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An unknown Vincetoxicum species has recently been discovered in northeastern Thailand. It is a twiner that resembles in its morphology and ecology V. flexuosum var. flexuosum, a variable species widely occurring from tropical Asia to Australia. Comprehensive morphological examination showed that despite similarities in growth habit, leaf shape, branching of the inflorescence and flower colour, these two taxa exhibit substantial differences in both vegetative and reproductive traits that clearly distinguish one from the other, particularly shape of the flower bud and indumentum on the corolla lobes. In addition, we also evaluated phylogenetic relationships based on DNA sequence data for ITS, trnT-L, trnL, and trnL-F markers of this new Vincetoxicum sp. with congeners (including, inter alia, new sequences of V. flexuosum var. flexuosum and also those of V. flexuosum var. tenuis, the other variety occurring in Thailand). The analyses demonstrated that the new Vincetoxicum sp. is not closely related to the taxa recognized as V. flexuosum. The new species was instead retrieved as sister to a clade containing the African taxa, V. caffrum, V. lycioides and V. fleckii. Therefore, integrated analyses of morphology and molecular phylogeny revealed Vincetoxicum sp. to be a well-defined species clearly distinct from V. flexuosum, as well as from all other known congeners. The morphological similarity between the new Vincetoxicum sp. and V. flexuosum var. flexuosum likely resulted from convergence, leading to various taxonomic complications. We here describe it as a new species, V. sangyojarniae, sp. nov., and provide a detailed description, illustration, photographs, and comparison to the morphologically similar V. flexuosum var. flexuosum. A preliminary taxonomic reconsideration of the infraspecific taxa under V. flexuosum is also suggested.

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Extended Morphological Characteristics of Vincetoxicum tmoleum Boiss. and Its Distribution in Turkey

Güven

Makbul

Çoşkunçelebi

2021

Recep Tayyip Erdoğan Üniversitesi Fen Ve Mühendislik Bilimleri Dergisi

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Bu çalışma ile Türkiye'de geniş bir yayılışa sahip Vincetoxicum tmoleum Boiss. taksonunun fotoğraf ve çizimler ile desteklenmiş morfolojik özellikleri yeniden incelenerek güncel veriler ışığında ülkemizdeki dağılımı ve tehdit değerlendirmeleri araştırılmıştır. Morfolojik çalışmalar, türün doğal yayılış gösterdiği alanlardan toplanmış ve Recep Tayyip Erdoğan Üniversitesi Biyoloji Bölümü Herbaryumunda (RUB) saklanan örnekler ile ulusal/uluslararası herbaryumlarda bulunan örnekler üzerinden gerçekleştrilmiştir. V. tmoleum dik ve kısa kıvrık tüylü (crisped) gövdesi, belirgin pedunkulu (10-45 mm), yeşilimsi-sarı renkli korollası, yoğun uzun kıvrık yünsü tüylü (lanate) petalleri, parçalı koronası, üçgenimsi korona segmentleri, lanseolat ve kısa kıvrık tüylü (crisped) meyvesi ile karakterize edilmektedir. Bu çalışma ile taksonun Türkiye'de yayılış gösterdiği ve doğrulanmış lokalite sayısı 89 olarak belirlenmiştir. Ayrıca, V. tmoleum taksonunun geniş yayılışlı olduğu, popülasyonlarının güçlü olduğu ve yakın gelecekte bir risk etmenin olmadığı değerlendirilmiştir.

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Contribution to chromosome numbers and phylogeny of Turkish Vincetoxicum Wolf (Apocynaceae, Asclepiadoideae)

Cited by 3 publications

References 24 publications

A new Vincetoxicum (Apocynaceae) species from Eastern Anatolia and its relationship based on biosystematic properties

A new Vincetoxicum (Apocynaceae) species from Eastern Anatolia and its relationship based on biosystematic properties

Molecular phylogenetic and morphological analyses support recognition of a new species of Vincetoxicum (Apocynaceae, Asclepiadoideae) from eastern Thailand

Extended Morphological Characteristics of Vincetoxicum tmoleum Boiss. and Its Distribution in Turkey

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