Population genetic diversity and structure of two rare vernal pool grasses in central California

Gordon, Sarah; Sloop, Christina M.; Davis, Heather G.; Cushman, J. Hall

doi:10.1007/s10592-011-0269-y

Cited by 34 publications

(25 citation statements)

References 40 publications

(43 reference statements)

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“…Some populations had lower than expected heterozygosity that was likely due to geographic isolation and increased inbreeding. Similarly, Tuctoria greenei, a federal endangered vernal pool endemic species evaluated for population-level genetic variation, found high heterozygosity (H O ¼ 0Á77, H E ¼ 0Á79), also with regional subdivision between northern and southern populations, although gene flow was not as restricted as in N. colusana (F ST ¼ 0Á11, P ¼ 0Á0001) (Gordon et al, 2012).…”

Section: Central Valley Wetlandsmentioning

confidence: 99%

Population-level genetic variation and climate change in a biodiversity hotspot

Schierenbeck

2017

Ann Bot

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Introduction Estimated future climate scenarios can be used to predict where hotspots of endemism may occur over the next century, but life history, ecological and genetic traits will be important in informing the varying responses within myriad taxa. Essential to predicting the consequences of climate change to individual species will be an understanding of the factors that drive genetic structure within and among populations. Here, I review the factors that influence the genetic structure of plant species in California, but are applicable elsewhere; existing levels of genetic variation, life history and ecological characteristics will affect the ability of an individual taxon to persist in the presence of anthropogenic change.Factors influencing the distribution of genetic variation Persistence in the face of climate change is likely determined by life history characteristics: dispersal ability, generation time, reproductive ability, degree of habitat specialization, plant-insect interactions, existing genetic diversity and availability of habitat or migration corridors. Existing levels of genetic diversity in plant populations vary based on a number of evolutionary scenarios that include endemism, expansion since the last glacial maximum, breeding system and current range sizes.Regional priorities and examples A number of well-documented examples are provided from the California Floristic Province. Some predictions can be made for the responses of plant taxa to rapid environmental changes based on geographic position, evolutionary history, existing genetic variation, and ecological amplitude.Conclusions, Solutions and Recommendations The prediction of how species will respond to climate change will require a synthesis drawing from population genetics, geography, palaeontology and ecology. The important integration of the historical factors that have shaped the distribution and existing genetic structure of California's plant taxa will enable us to predict and prioritize the conservation of species and areas most likely to be impacted by rapid climate change, human disturbance and invasive species.

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Section: Central Valley Wetlandsmentioning

confidence: 99%

Population-level genetic variation and climate change in a biodiversity hotspot

Schierenbeck

2017

Ann Bot

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“…enetic diversity is a basic component of biodiversity that is extremely important for conservation strategies (Gordon et al 2012). Preserving the genetic diversity of endangered plants has a significant influence on their long-term survival and evolution in changing environments (Yang et al 2014).…”

Section: Hongyan Han Et Almentioning

confidence: 99%

Phenotypic diversity in natural populations of an endangered plant <em>Tetracentron sinense</em>

Gan

et al. 2017

Bot. Sci.

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Background: Tetracentron sinense, distributed mainly in central and southwest China, is a threatened deciduous broad-leaved canopy tree. Presently, little is known about the phenotypic diversity in natural populations of T. sinense, and its fitness and evolutionary potential to the fragmental habitat, which is very important for its conservation. Questions: (1) How is the level of phenotypic diversity in natural populations of T. sinense? (2) Which factors influenced the phenotypic variation? Species study: Tetracentron sinense. Study dates: Between September and October 2014Methods: 20 phenotypic traits from 11 populations were measured. Nested analysis of variance, multicomparison, principal components analysis, cluster analysis and correlation analysis were used to study the phenotypic variation and its relation to geo-climate factors. Results: Analysis of nested variance showed significant difference among and within populations, but the phenotypic differentiation coefficient and variance component among populations was higher than that within populations. Variation of phenotypic traits in T. sinense was mainly associated with annual sunshine hours, and showed cline variation along longitude and elevation. 11 provenances of T. sinense were clustered into four groups based on PCA. Conclusions: Phenotypic variation in T. sinense mainly existed among population, and there was moderate level of phenotypic differentiation among populations and low level of phenotypic variation within populations in T. sinense. Autogamy or geitonogamy may be the major factor contributing to the low phenotypic variation and moderate genetic divergence within this species. Suggestions for conservation strategies are provided.

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“…Вавиловский журнал генетики и селекции • 2017 • 21 • 3 Г енетическое разнообразие -один из биологических аспектов, имеющих огромное значение для разработки стратегий охраны редких и находящихся под угрозой исчезновения видов (Kaljund, Jaaska, 2010;Gordon et al, 2012). Изучение генетического разнообразия вида слу-жит научной основой для охраны его генофонда, а также для восстановления его генотипической структуры при реинтродукции (Журавлев и др., 1999).…”

Section: филогенетикаunclassified

“…Уровень генети-ческого разнообразия редких видов может существенно влиять на способность их популяций адаптироваться к изменениям окружающей среды и, следовательно, на их дальнейшее выживание (Примак, 2002;Frankham et al, 2002). Невозможно оценить перспективы дальнейшего существования вида без знания генетической структу-ры его популяций (Frankham, 2003;Gordon et al, 2012;Lopes et al, 2014). Для поддержания генетического раз-нообразия в популяциях очень важен размер популяции (Frankham, 2005).…”

Section: филогенетикаunclassified

“…Полученные нами данные со-гласуются с результатами исследований, показывающих, что некоторые редкие и исчезающие виды могут поддер-живать высокий уровень генетического разнообразия даже при малых размерах их популяций (Rossetto et al, 1995;Ci et al, 2008;Gordon et al, 2012;Zhao et al, 2012;Chen et al, 2014;Wu et al, 2014).…”

Section: результаты и обсуждениеunclassified

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Variability and interpopulation differentiation of the rare species Gueldenstaedtia monophylla Fisch. (Fabaceae)

Selyutina¹,

Konichenko²,

Дорогина³

2017

Vestn. VOGiS

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central Siberian Botanical garden SB raS, novosibirsk, russia genetic variability of the rare species Guelden staedtia monophylla from 7 natural populations in the central part of its range (ongudai district, altai republic) was studied. to characterize the genetic diversity of this rare relict species at the population level, SDS-electrophoresis of seed storage proteins was used. Polypeptide spectra of seeds contained from 17 to 32 protein components, of which 28 were polymorphic. the populations of G. mono phylla were revealed to have a sufficiently high level of genetic polymorphism, the genetic similarity index within the populations studied ranged from 0.673 to 0.813. the highest variability of seed storage proteins was found in the populations inegen (0.673) and Malaya inya (0.734). the lowest level of variability of the polypeptide spectra was in the population Bol'shoy Yaloman (0.813). the nei genetic distance between the populations studied was 0.018-0.215, the greatest distance in the protein spectra was found between inegen and Malaya inya (0.215). inegen was the most remote from the other populations, the nei distance between this population and all other populations varying from 0.113 to 0.215. With aMoVa, it was found that the share of intra-population variability is 53 % and inter-population, 47 %. Perhaps this high genetic diversity in populations of G. monophylla is provided and maintained by such biological characteristics of the species as cross-pollination, high life expectancy and a long reproductive period. the results of our study suggest that some rare species are able to maintain high levels of genetic diversity, even in a small-size population. the relatively high level of genetic variability indicates that the current genetic drift and inbreeding do not pose a threat to the survival of the species.Key words: genetic diversity; rare species; Gueldenstaedtia monophylla; SDS-electrophoresis; seed storage proteins polymorphism. в работе изучена генетическая изменчивость редкого вида гюльден-штедтии однолистной (Gueldenstaedtia monophylla) из семи природных популяций в центральной части ее ареала (Онгудайский район респуб-лики алтай). для характеристики генетического разнообразия этого реликтового вида как на видовом, так и на популяционном уровне был использован SDS-электрофорез запасных белков семян. Полипеп-тидные спектры семян содержали от 17 до 32 белковых компонентов, из которых 28 были полиморфными. в популяциях G. monophylla вы-явлен достаточно высокий уровень генетического полиморфизма, ве-личина индекса генетического сходства внутри изученных популя ций варьировала от 0.673 до 0.813. наибольшая изменчивость запасных белков семян установлена в популяциях инегень (0.673) и Малая иня (0.734). самый низкий уровень изменчивости полипептидных спект-ров выявлен в популяции Большой Яломан (0.813). генетическая дис-танция nei между изученными популяциями составила 0.018-0.215, наибольшая дистанция по белковым спектрам (0.215) найдена между популяциями инегень и Малая иня. Популяция инегень...

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Population genetic diversity and structure of two rare vernal pool grasses in central California

Cited by 34 publications

References 40 publications

Population-level genetic variation and climate change in a biodiversity hotspot

Population-level genetic variation and climate change in a biodiversity hotspot

Phenotypic diversity in natural populations of an endangered plant <em>Tetracentron sinense</em>

Variability and interpopulation differentiation of the rare species Gueldenstaedtia monophylla Fisch. (Fabaceae)

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