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Zhao Z, Zhang H, Wang P, Yang Y, Sun H, Li J, Chen X, Li J, Ji N, Feng H, Zhao S. Development of SSR molecular markers and genetic diversity analysis of Clematis acerifolia from Taihang Mountains. PLoS One 2023; 18:e0285754. [PMID: 37205665 DOI: 10.1371/journal.pone.0285754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 05/01/2023] [Indexed: 05/21/2023] Open
Abstract
Investigating the genetic diversity and population structure is important in conserving narrowly distributed plants. In this study, 90 Clematis acerifolia (C. acerifolia) plants belonging to nine populations were collected from the Taihang Mountains in Beijing, Hebei, and Henan. Twenty-nine simple sequence repeats (SSR) markers developed based on RAD-seq data were used to analyze the genetic diversity and population structure of C. acerifolia. The mean PIC value for all markers was 0.2910, indicating all SSR markers showed a moderate degree of polymorphism. The expected heterozygosity of the whole populations was 0.3483, indicating the genetic diversity of both C. acerifolia var. elobata and C. acerifolia were low. The expected heterozygosity of C. acerifolia var. elobata (He = 0.2800) was higher than that of C. acerifolia (He = 0.2614). Genetic structure analysis and principal coordinate analysis demonstrated that C. acerifolia and C. acerifolia var. elobata showed great genetic differences. Molecular variance analysis (AMOVA) demonstrated that within-population genetic variation (68.31%) was the main contributor to the variation of the C. acerifolia populations. Conclusively, C. acerifolia var. elobata had higher genetic diversity than C. acerifolia, and there are significant genetic differences between C. acerifolia and C. acerifolia var. elobata, and small genetic variations within the C. acerifolia populations. Our results provide a scientific and rational basis for the conservation of C. acerifolia and provide a reference for the conservation of other cliff plants.
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Affiliation(s)
- Zhengnan Zhao
- Beijing Key Laboratory of Greening Plants Breeding, Beijing Academy of Forestry and Landscape Architecture, Beijing, China
| | - Hongwei Zhang
- Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Pingxi Wang
- Henan Institute of Science and Technology, College of Life Science and Technology, Xinxiang, Henan, China
| | - Yuan Yang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing, China
| | - Hongyan Sun
- Beijing Key Laboratory of Greening Plants Breeding, Beijing Academy of Forestry and Landscape Architecture, Beijing, China
| | - Jinyu Li
- Beijing Key Laboratory of Greening Plants Breeding, Beijing Academy of Forestry and Landscape Architecture, Beijing, China
| | - Xiao Chen
- Beijing Key Laboratory of Greening Plants Breeding, Beijing Academy of Forestry and Landscape Architecture, Beijing, China
| | - Jun Li
- Beijing Key Laboratory of Greening Plants Breeding, Beijing Academy of Forestry and Landscape Architecture, Beijing, China
| | - Naizhe Ji
- Beijing Key Laboratory of Greening Plants Breeding, Beijing Academy of Forestry and Landscape Architecture, Beijing, China
| | - Hui Feng
- Beijing Key Laboratory of Greening Plants Breeding, Beijing Academy of Forestry and Landscape Architecture, Beijing, China
| | - Shiwei Zhao
- Beijing Key Laboratory of Greening Plants Breeding, Beijing Academy of Forestry and Landscape Architecture, Beijing, China
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Rajapakshe RPVGSW, Turner SR, Cross AT, Tomlinson S. Hydrological and thermal responses of seeds from four co-occurring tree species from southwest Western Australia. CONSERVATION PHYSIOLOGY 2020; 8:coaa021. [PMID: 32377342 PMCID: PMC7192333 DOI: 10.1093/conphys/coaa021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 02/14/2020] [Accepted: 02/20/2019] [Indexed: 05/21/2023]
Abstract
Seed germination is a critical stage in the life cycle of most plants and is defined by specific tolerance thresholds beyond which rates and success of germination rapidly decline. Previous studies have demonstrated that widespread plant species commonly germinate over a broad range of temperatures and water stress levels, whereas range-restricted species often exhibit a narrower germination window in terms of temperature and moisture. We investigated the relationships of the key germination traits of maximum germination (G max) and time to 50% germination (t 50) in response to temperature (5-35°C) and water stress (-1.5-0 MPa) in four co-occurring Western Australian native Eucalyptus species with widely varying biogeography. Eucalyptus caesia subsp. caesia and E. ornata exhibit a highly localized distribution and a narrow geographical range, being restricted either to granite outcrops or the upper slopes and tops of lateritic rises, respectively. These two species were compared with the two widespread and dominant congenerics E. salmonophloia and E. salubris. There was a distinctive hump-shaped response of t 50 to temperature and an exponential response to water stress, characteristic of rate- and threshold-limited processes, but no consistent pattern in the response of G max. The four species were significantly different in their thermal performance of t 50, with E. caesia and E. ornata displaying narrower thermal tolerance ranges than the two widespread species. In terms of mean final germination percentage, the two range-restricted endemic taxa exhibited higher lability in their response to thermal stress and drought stress compared to the two broadly distributed congenerics. These findings indicate a link between distributional extent, temperature and water stress tolerance and may have implications for identifying ecological filters of rarity and endemism.
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Affiliation(s)
- Rajapakshe P V G S W Rajapakshe
- Centre for Mine Site Restoration, School of Molecular and Life Sciences, Curtin University, Perth, Western Australia 6845, Australia
- School of Molecular and Life Sciences, Curtin University, Perth, Western Australia 6845, Australia
- Kings Park Science, Department of Biodiversity, Conservation and Attractions, Kattidj Close, Kings Park, WA 6005, Australia
| | - Shane R Turner
- School of Molecular and Life Sciences, Curtin University, Perth, Western Australia 6845, Australia
- Kings Park Science, Department of Biodiversity, Conservation and Attractions, Kattidj Close, Kings Park, WA 6005, Australia
- School of Biological Sciences, Faculty of Science, The University of Western Australia, Crawley, WA 6009, Australia
| | - Adam T Cross
- Centre for Mine Site Restoration, School of Molecular and Life Sciences, Curtin University, Perth, Western Australia 6845, Australia
| | - Sean Tomlinson
- School of Molecular and Life Sciences, Curtin University, Perth, Western Australia 6845, Australia
- Kings Park Science, Department of Biodiversity, Conservation and Attractions, Kattidj Close, Kings Park, WA 6005, Australia
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Winkler DE, Lin MYC, Delgadillo J, Chapin KJ, Huxman TE. Early life history responses and phenotypic shifts in a rare endemic plant responding to climate change. CONSERVATION PHYSIOLOGY 2019; 7:coz076. [PMID: 31687148 PMCID: PMC6822542 DOI: 10.1093/conphys/coz076] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 08/25/2019] [Accepted: 08/30/2019] [Indexed: 05/29/2023]
Abstract
Changes in species ranges are anticipated with climate change, where in alpine settings, fragmentation and contraction are likely. This is especially true in high altitude biodiversity hotspots, where warmer growing seasons and increased drought events may negatively impact populations by limiting regeneration. Here, we test for high-altitude species responses to the interactive effects of warming and drought in Heterotheca brandegeei, a perennial cushion plant endemic to alpine outcroppings in Sierra de San Pedro Mártir National Park, Baja California, México. We exposed H. brandegeei seedlings to experimental warming and drought conditions to document early life history responses and the species ability to tolerate climate change. Drought negatively influenced seedling growth, with overall reductions in above- and belowground biomass. Warming and drought each led to substantial reductions in leaf development. At the same time, individuals maintained high specific leaf area and carbon investment in leaves across treatments, suggesting that existing phenotypic variation within populations may be high enough to withstand climate change. However, warming and drought interacted to negatively influence leaf-level water-use efficiency (WUE). Seedling mortality rates were nearly three times higher in warming and drought treatments, suggesting bleak prospects for H. brandegeei populations in future climate conditions. Overall, our results suggest H. brandegeei populations may experience substantial declines under future warmer and drier conditions. Some individuals may be able to establish, albeit, as smaller, more stressed plants. These results further suggest that warming alone may not be as consequential to populations as drought will be in this already water-limited system.
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Affiliation(s)
- Daniel E Winkler
- Ecology & Evolutionary Biology, 321 Steinhaus Hall, University of California, Irvine, CA, 92697, USA
- United States Geological Survey, 2290 S West Resource Boulevard, Southwest Biological Science Center, UT, 84532, USA
| | | | - José Delgadillo
- Facultad de Ciencias, Universidad Autónoma de Baja California, Ensenada, Baja California, 22800, México
| | - Kenneth J Chapin
- Ecology & Evolutionary Biology, University of Arizona, P.O. Box 210088, Tucson, AZ, 85721, USA
| | - Travis E Huxman
- Ecology & Evolutionary Biology, 321 Steinhaus Hall, University of California, Irvine, CA, 92697, USA
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Luo X, Hu Q, Zhou P, Zhang D, Wang Q, Abbott RJ, Liu J. Chasing ghosts: allopolyploid origin ofOxyria sinensis(Polygonaceae) from its only diploid congener and an unknown ancestor. Mol Ecol 2017; 26:3037-3049. [DOI: 10.1111/mec.14097] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 03/02/2017] [Accepted: 03/02/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Xin Luo
- MOE Key Laboratory for Bio-resources and Eco-environment; College of Life Science; Sichuan University; Chengdu China
| | - Quanjun Hu
- MOE Key Laboratory for Bio-resources and Eco-environment; College of Life Science; Sichuan University; Chengdu China
- State Key Laboratory of Grassland Agro-Ecosystem; College of Life Science; Lanzhou University; Lanzhou China
| | - Pingping Zhou
- MOE Key Laboratory for Bio-resources and Eco-environment; College of Life Science; Sichuan University; Chengdu China
| | - Dan Zhang
- MOE Key Laboratory for Bio-resources and Eco-environment; College of Life Science; Sichuan University; Chengdu China
| | - Qian Wang
- MOE Key Laboratory for Bio-resources and Eco-environment; College of Life Science; Sichuan University; Chengdu China
- Research Center for Medicine and Biology; Zunyi Medical University; Zunyi China
| | - Richard J. Abbott
- School of Biology; University of St Andrews; St Andrews Fife KY16 9TH UK
| | - Jianquan Liu
- MOE Key Laboratory for Bio-resources and Eco-environment; College of Life Science; Sichuan University; Chengdu China
- State Key Laboratory of Grassland Agro-Ecosystem; College of Life Science; Lanzhou University; Lanzhou China
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Chen BJW, Vermeulen PJ, During HJ, Anten NPR. Testing for disconnection and distance effects on physiological self-recognition within clonal fragments of Potentilla reptans. FRONTIERS IN PLANT SCIENCE 2015; 6:215. [PMID: 25904925 PMCID: PMC4387473 DOI: 10.3389/fpls.2015.00215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 03/17/2015] [Indexed: 05/23/2023]
Abstract
Evidence suggests that belowground self-recognition in clonal plants can be disrupted between sister ramets by the loss of connections or long distances within a genet. However, these results may be confounded by severing connections between ramets in the setups. Using Potentilla reptans, we examined severance effects in a setup that grew ramet pairs with connections either intact or severed. We showed that severance generally reduced new stolon mass but had no effect on root allocation of ramets. However, it did reduce root mass of younger ramets of the pairs. We also explored evidence for physiological self-recognition with another setup that avoided severing connections by manipulating root interactions between closely connected ramets, between remotely connected ramets and between disconnected ramets within one genet. We found that ramets grown with disconnected neighbors had less new stolon mass, similar root mass but higher root allocation as compared to ramets grown with connected neighbors. There was no difference in ramet growth between closely connected- and remotely connected-neighbor treatments. We suggest that severing connections affects ramet interactions by disrupting their physiological integration. Using the second setup, we provide unbiased evidence for physiological self-recognition, while also suggesting that it can persist over long distances.
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Affiliation(s)
- Bin J. W. Chen
- Ecology and Biodiversity, Institute of Environmental Biology, Utrecht UniversityUtrecht, Netherlands
- Centre for Crop Systems Analysis, Department of Plant Sciences, Wageningen UniversityWageningen, Netherlands
| | - Peter J. Vermeulen
- Centre for Crop Systems Analysis, Department of Plant Sciences, Wageningen UniversityWageningen, Netherlands
| | - Heinjo J. During
- Ecology and Biodiversity, Institute of Environmental Biology, Utrecht UniversityUtrecht, Netherlands
| | - Niels P. R. Anten
- Centre for Crop Systems Analysis, Department of Plant Sciences, Wageningen UniversityWageningen, Netherlands
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Liu WS, Wei W, Dong M. Clonal and genetic diversity of Carex moorcroftii on the Qinghai-Tibet plateau. BIOCHEM SYST ECOL 2009. [DOI: 10.1016/j.bse.2009.07.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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