Genetic diversity in Astragalus argaeus, a critically endangered species from Turkey

Atasagun, Bayram; Aksoy, Ahmet; Gürcan, Kahraman

doi:10.2478/s11756-018-0112-8

Cited by 6 publications

(5 citation statements)

References 41 publications

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“…For instance, outcrossing taxa have the greatest diversity, while autogamous taxa have the lowest diversity [45]. It was observed [18] that the breeding system of C. amaena was facultative xenogamous, and this may be one of the reasons for its high level of genetic diversity. The greatest amount of genetic diversity in C. amaena was found within the population rather than among populations as estimated by Nei's gene diversity (82.35%), Shannon's information index (83.66%) and AMOVA (75.10%).…”

Section: Discussionmentioning

confidence: 99%

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Assessment of the genetic diversity of a critically endangered species Centaurea amaena (Asteraceae)

Atasagun

2022

ARCH BIOL SCI BELGRA

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Centaurea amaena is an endemic and endangered species listed as CR (critically endangered) in Turkey. ISSR markers were used to detect the level of genetic diversity in two natural populations of C. amaena. A total of 50 ISSR primers were used and 13 primers producing polymorphic and reproducible products were selected. These primers yielded 102 amplified discernible loci, of which 80 (78%) were polymorphic. A high level of genetic diversity was detected both at population and species levels; the effective number of alleles (Ne) was 1.544, the observed number of alleles (Na) was 1.784, the Nei?s genetic diversity (H) was 0.306, and Shannon's information index was 0.447. The established gene flow (Nm) was 2.329, indicating a high migration rate between the populations. A moderate level of genetic differentiation (GST: 0.176) was also observed. Analysis of molecular variance (AMOVA) revealed that 24.89% of the total genetic diversity resided among populations, while 75.10% was within the populations. Cluster analysis showed that samples from the same locality clustered together and there was no cross-clustering between the samples. The patterns of genetic variation indicate that existing C. amaena populations should be conserved.

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Section: Discussionmentioning

confidence: 99%

“…ISSR are usually dominant markers and allow more stringent amplification [12,13]. ISSR markers have effectively been used in the fields of genetic diversity, phylogenetic analysis and evolutionary biology [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the genetic diversity of a critically endangered species Centaurea amaena (Asteraceae)

Atasagun

2022

ARCH BIOL SCI BELGRA

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“…Baykal Gölü bölgesine özgü nadir bir tür olan Astragalus sericeocanus'un altı popülasyonunda genetik çeşitlilik ve popülasyonun genetik yapısını değerlendirilmek amacı ile ISSR belirteçleri kullanıldığı çalışmada Mantel (Nathan Mantel)'in testi ile A. sericeocanus popülasyonları arasında genetik uzaklık ile coğrafi uzaklık arasında anlamlı bir ilişki görülmüştür [29]. Kayseri'nin Erciyes Dağı'nda yetişen, nesli kritik tehlike altında olan endemik tür A. argaeus'un 4 populasyonundaki genetik çeşitliliği tespit etmek için ISSR belirteçleri kullanılmıştır [30]. Aynı şekilde 2011 yılında İspanya'nın güneydoğusunda endemik ve nesli tükenmekte bir tür olan Astragalus nitidiflorus' un 5 populasyonundaki genetik çeşitliliği ve populasyon yapısını değerlendirmek için yapılan çalışmada ISSR belirteçleri kullanılmıştır.…”

Section: Sonuçlar Ve Tartışmaunclassified

Determination of genetic diversity of Astragalus L. species distributed in Erzincan and its surroundings by ISSR method

DAĞ,

YILDIRIM,

KORKMAZ

2023

BioDiCon

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Bu çalışmada, 2021 yılının vejetasyon döneminde Erzincan’daki 42 farklı lokaliteden Astragalus L. cinsine ait bitki örnekleri toplanmıştır. Yapılan bitki tayini çalışmaları sonucunda 12 takson (A. pennatulus, A. compactus, A. aduncus, A. xylobasis, A. angustifolius subsp. angustifolius, A. karamasicus,A. kurdicus, A. cancellatus, A. eriocephalus subsp. eriocephalus, A. lycius, A. microcephalus, A. lagurus) belirlenmiştir. Bunlardan 3’ü (Astragalus pennatulus, Astragalus karamasicus, Astragalus lycius) endemiktir. Belirlenen türler arasındaki genetik ilişkiler ISSR moleküler markırları ile araştırılmıştır. ISSR (kısa dizi tekrarları arası) yönteminde 16 primer (UBC868, UBC817, UBC807, UBC812, UBC816, UBC825, UBC824, UBC830, UBC836, UBC840, UBC848, UBC855, UBS856, UBC841, UBC842, UBC61) kullanılmıştır. PCR sonuçlarına gore, çalışılan primerler 100-2000 bç uzunluğunda bantlar vermiştir. ISSR primerlerine göre polimorfizm % 90.8 hesaplanmıştır. ISSR verileri ile UPGMA yöntemi kullanılarak dendrogramlar oluşturulmuştur. En yüksek genetik benzerlik A. kurdicus ile A. angustifolius supsp angustifolius taksonları arasında gözlenirken, en düşük genetik benzerlik A. angustifolius subsp angustifolius ile A. pennatulus taksonları arasında gözlenmiştir. Çalışılan bu markerlar Astragalus türleri arasındaki genetik benzerliği karakterize etmede uygun markırlar olduğunu ortaya çıkarmıştır.

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“…Selyutina et al (2016) concluded that this variation in genetic structure is due to the high level of gene flow in A. sericeocanus and is evidence that the high genetic diversity of the populations is the result of habitat fragmentation. Generally, one of the main results of novel molecular studies is that detectable levels of genetic sub-structuring might be present even in relatively undifferentiated species (Gitzendanner & Soltis, 2000;Baskauf & Burke, 2009;Atasagun et al, 2018).…”

Section: Genetic Diversitymentioning

confidence: 99%

Reproductive biology, ecological life history/demography and genetic diversity of the megagenus Astragalus (Fabaceae, Papilionoideae)

et al. 2021

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Astragalus is the largest genus of seed plants; however, information on its reproductive biology and life history is widely scattered in the literature. About 96% of the species are perennials and 4% annuals; many are rare endemics. Astragalus species are obligate or facultative outcrossers, and inbreeding depression is higher in self-compatible (SC) than in self-incompatible (SI) species. The most frequent pollinators are Bombus, Osmia and Anthophora. On average, 48% of ovules produce seeds, and 40% of flowers produce fruits. Seed/ovule and fruit/flower ratios are lower in SC than in SI species. Predispersal insect seed predation ranges from 0 to 93%, and major predators are Acanthoscelides, Bruchophagus and Tychius. Seeds have physical dormancy and typically form a seed bank. C 3 is the only photosynthetic pathway in the genus. Population growth may be cyclic or noncyclic, and genetic diversity of a taxon may or may not be related to size of geographic range.

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Genetic diversity in Astragalus argaeus, a critically endangered species from Turkey

Cited by 6 publications

References 41 publications

Assessment of the genetic diversity of a critically endangered species Centaurea amaena (Asteraceae)

Assessment of the genetic diversity of a critically endangered species Centaurea amaena (Asteraceae)

Determination of genetic diversity of Astragalus L. species distributed in Erzincan and its surroundings by ISSR method

Reproductive biology, ecological life history/demography and genetic diversity of the megagenus Astragalus (Fabaceae, Papilionoideae)

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