Genetic variation and differentiation in Juniperus excelsa M. Bieb. populations in Turkey

Yücedağ, Cengiz; Gailing, Oliver

doi:10.1007/s00468-012-0807-3

Cited by 12 publications

(25 citation statements)

References 32 publications

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“…P ST values for one-year old-seedlings (n = 150 for each population), that have been grown in a common environment, were considerably lower and in the range of genetic differentiation values (F ST values) observed at putatively neutral nuclear microsatellite markers (F ST = 2.8%) (Yücedað and Gailing 2013). Similar differentiation at nuclear microsatellites and phenotypic traits suggests that these traits are neutral with respect to selection (e.g.…”

Section: Discussionmentioning

confidence: 87%

“…M. (Barbero et al 1994;Mazur et al 2004;Marcysiak et al 2007;Douaihy et al 2012). Besides, one study of Crimean juniper estimated the amount of genetic variation based on morphological characteristics within and among populations and heritability for a limited number of cone, seed and juvenile seedling characteristics (Yücedað et al 2010), and two studies applied genetic markers to assess genetic diversity within and among populations (Douaihy et al 2011, Douaihy et al 2012Yücedað and Gailing 2013).…”

Section: Vol 70 65-72mentioning

confidence: 99%

“…In the present study we apply multivariate analyses to compare J. excelsa populations from Turkey based on a comprehensive set of 13 cone, seed, juvenile and 1+0 year-old seedling characters and compare phenotypic trait differentiation with differentiation at microsatellite markers (Yücedað and Gailing 2013). Up to now only in one study (Douaihy et al 2012) levels of differentiation among populations at phenotypic characters and genetic markers have been compared for Juniperus excelsa.…”

Section: Vol 70 65-72mentioning

confidence: 99%

“…The purpose of the present study was (1) to determine morphological dissimilarities among seven populations of Crimean juniper in Lakes District of Turkey based on cone, seed and seedling characters, and (2) to evaluate to what extend phenotypic trait differentiation (P ST ) estimated in this study would resemble the genetic differentiation (F ST ) described on the basis of genetic markers reported in an earlier study (Yücedað and Gailing 2013). Higher phenotypic differentiation than differentiation at genetic markers (F ST ) would be indicative of divergent selection on these traits.…”

Section: Vol 70 65-72mentioning

confidence: 99%

“…Additionally, phenotypic trait differentiation (P ST ) among populations estimated in the present study was compared with genetic differentiation (F ST ) at selectively neutral microsatellite markers for the same populations published before (Yücedað and Gailing 2013).…”

Section: Statistic Treatmentmentioning

confidence: 99%

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Differences among Juniperus excelsa populations as revealed at morphological traits

Yücedağ¹,

Gailing²

2013

Dendrobiology

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Abstract:The comparison of phenotypic trait differentiation and genetic differentiation at selectively neutral genetic markers can indicate divergent selection on traits. Phenotypic trait differentiation (P ST ) and two multivariate analysis methods were used to determine the level of differentiation and relationships among seven Juniperus excelsa populations based on 13 morphological characters of their cones, seeds, juvenile seedlings and 1+0 year old seedlings. Significant differences among populations were found for all morphological characters (P<0.001) apart from cotyledon length using ANOVA. According to Penrose and Squared Euclidean distances, the southeastern populations Bucak-Kestel and Gölhisar-Gölhisar (0.970; 12.374) were most similar. Aksu-Sorgun and Eðirdir-Barla populations, separated by a mountain range, were the most different populations (4.647; 47.157). Evaluated as a whole, both multivariate analysis methods gave similar results. Phenotypic trait differentiation (P ST ) for 1+0 year old seedlings that were grown in a common environment was similar in magnitude for the majority of traits as genetic differentiation at nuclear microsatellite markers (F ST ) suggesting the absence of divergent selection on these traits.

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Section: Discussionmentioning

confidence: 87%

Section: Vol 70 65-72mentioning

confidence: 99%

Section: Vol 70 65-72mentioning

confidence: 99%

Section: Vol 70 65-72mentioning

confidence: 99%

Section: Statistic Treatmentmentioning

confidence: 99%

See 3 more Smart Citations

Differences among Juniperus excelsa populations as revealed at morphological traits

Yücedağ¹,

Gailing²

2013

Dendrobiology

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Allelopathic Effects, Physiological Responses and Phenolic Compounds in Litter Extracts of Juniperus rigidaSieb. et Zucc.

Liu

Wang

et al. 2017

Chemistry & Biodiversity

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The allelopathic effects of Juniperus rigida litter aqueous extract (LE) on wheat and Pinus tabuliformis were studied, as well as the physiological responses to the extract. High concentration LE (0.10 g Dw/ml) significantly inhibited the seed germination and seedling growth in receptor plants. The chlorophyll content and root activity in the wheat seedlings were reduced significantly across all treatments; however, those were more prominently reduced at high concentration (0.10 g Dw/ml) but received little stimulation at low concentration (0.025 g Dw/ml) in P. tabuliformis. The content of malonaldehyde (MDA) increased with increasing concentrations of LE, except at 0.025 g Dw/ml. Activities of antioxidant enzymes (POD, CAT and SOD) in receptor plants were all significantly inhibited at high concentrations but stimulated at low concentrations. These results demonstrate that the aqueous extract from J. rigida litter has allelopathic potential. Various phenolic compounds were identified in litter aqueous extract and litter ethanol extract by HPLC. The phenolic compound content in the aqueous extract was significantly lower than that in the ethanol extract. Chlorogenic acid and podophyllotoxin were the predominant phenolic compounds in both types of litter extracts. These findings suggest that the seed germination and seedling growth of P. tabuliformis and wheat would be inhibited when planted near large amounts J. rigida litter.

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Drought responses and their effects on radial stem growth of two co-occurring conifer species in the Mediterranean mountain range

Güney

Zweifel

Türkan

et al. 2020

Annals of Forest Science

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Key message Patterns of stem radial variations showed thatCedrus libaniA. Rich. was less limited by summer drought than co-occurringJuniperus excelsaM. Bieb.Cedrus libanirecovered faster from tree water deficit and showed significantly higher radial growth rates and annual stem increments thanJ. excelsa. However, the ability ofJ. excelsato grow more hours per year may indicate a potential benefit in more extreme conditions. Context Knowledge about species-specific drought responses is needed to manage productive forests in drought prone areas. Under water shortage, trees commonly show stem shrinkage, which is assumed to inhibit growth. Aims We investigated whether the two co-existing conifers Juniperus excelsa M. Bieb. and Cedrus libani A. Rich. (growing at the Taurus Mountains, SW-Turkey) show differences in water relations and stem growth in order to evaluate their respective drought tolerance. Methods Stem radius changes were hourly monitored over 2 years using high-resolution point dendrometers. Radial stem growth, tree water deficit-induced stem shrinkage, and maximum daily shrinkage were extracted from stem radius change measurements, investigated for their patterns, and related to environmental conditions. Results Cedrus libani recovered from tree water deficit under higher temperature and vapor pressure deficit than J. excelsa. The number of hours during which stem growth occurred was higher for J. excelsa; however, growth rates and annual increments were significantly lower than in C. libani. Both species showed highest maximum daily shrinkage during the driest months indicating the ability to maintain gas exchange all year round. Conclusion Juniperus excelsa showed a more conservative growth strategy while C. libani was less limited by summer drought and showed more annual stem increment under the conditions investigated.

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Genetic variation and differentiation in Juniperus excelsa M. Bieb. populations in Turkey

Cited by 12 publications

References 32 publications

Differences among Juniperus excelsa populations as revealed at morphological traits

Differences among Juniperus excelsa populations as revealed at morphological traits

Allelopathic Effects, Physiological Responses and Phenolic Compounds in Litter Extracts of Juniperus rigidaSieb. et Zucc.

Drought responses and their effects on radial stem growth of two co-occurring conifer species in the Mediterranean mountain range

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