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Hightower AT, Chitwood DH, Josephs EB. Herbarium specimens reveal links between Capsella bursa-pastoris leaf shape and climate. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.13.580180. [PMID: 38405842 PMCID: PMC10888959 DOI: 10.1101/2024.02.13.580180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Studies into the evolution and development of leaf shape have connected variation in plant form, function, and fitness. For species with consistent leaf margin features, patterns in leaf architecture are related to both biotic and abiotic factors. However, for species with inconsistent leaf margin features, quantifying leaf shape variation and the effects of environmental factors on leaf shape has proven challenging. To investigate leaf shape variation in species with inconsistent shapes, we analyzed approximately 500 digitized Capsella bursa-pastoris specimens collected throughout the continental U.S. over a 100-year period with geometric morphometric modeling and deterministic techniques. We generated a morphospace of C. bursa-pastoris leaf shapes and modeled leaf shape as a function of environment and time. Our results suggest C. bursa-pastoris leaf shape variation is strongly associated with temperature over the C. bursa-pastoris growing season, with lobing decreasing as temperature increases. While we expected to see changes in variation over time, our results show that level of leaf shape variation is consistent over the 100-year period. Our findings showed that species with inconsistent leaf shape variation can be quantified using geometric morphometric modeling techniques and that temperature is the main environmental factor influencing leaf shape variation.
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Affiliation(s)
- Asia T Hightower
- Department of Plant Biology, Michigan State University, 612 Wilson Rd, East Lansing, MI, 48824-1226
- Ecology, Evolution, & Behavior Program, Michigan State University, 567 Wilson Rd, East Lansing, MI 48824-1226
- Plant Resilience Institute, Michigan State University, East Lansing, MI, 48824-1226
| | - Daniel H Chitwood
- Department of Horticulture, Michigan State University, 1066 Bogue Street, East Lansing, MI 48824-1226
- Department of Computational Mathematics, Science, and Engineering, Michigan State University, 428 S Shaw Ln, East Lansing, MI 48824-1226
| | - Emily B Josephs
- Department of Plant Biology, Michigan State University, 612 Wilson Rd, East Lansing, MI, 48824-1226
- Ecology, Evolution, & Behavior Program, Michigan State University, 567 Wilson Rd, East Lansing, MI 48824-1226
- Plant Resilience Institute, Michigan State University, East Lansing, MI, 48824-1226
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Maciel EA, Guilherme FA. Species density per grid cell no longer predicts the local abundance of woody plants. ECOL INFORM 2022. [DOI: 10.1016/j.ecoinf.2022.101866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Daco L, Colling G, Matthies D. Altitude and latitude have different effects on population characteristics of the widespread plant Anthyllis vulneraria. Oecologia 2021; 197:537-549. [PMID: 34601636 PMCID: PMC8505396 DOI: 10.1007/s00442-021-05030-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 08/27/2021] [Indexed: 12/02/2022]
Abstract
Widespread plants may provide natural models for how population processes change with temperature and other environmental variables and how they may respond to global change. Similar changes in temperature can occur along altitudinal and latitudinal gradients, but hardly any study has compared the effects of the two types of gradients. We studied populations of Anthyllis vulneraria along a latitudinal gradient from Central Europe to the range limit in the North and an altitudinal gradient in the Alps from 500 m to the altitudinal limit at 2500 m, both encompassing a change in annual mean temperature of c. 11.5 °C. Plant size and reproduction decreased, but plant density increased along both gradients, indicating higher recruitment and demographic compensation among vital rates. Our results support the view that demographic compensation may be common in widespread species in contrast to the predictions of the abundant centre model of biogeography. Variation in temperature along the gradients had the strongest effects on most population characteristics, followed by that in precipitation, solar radiation, and soil nutrients. The proportion of plants flowering, seed set and seed mass declined with latitude, while the large variation in these traits along the altitudinal gradient was not related to elevation and covarying environmental variables like annual mean temperature. This suggests that it will be more difficult to draw conclusions about the potential impacts of future climate warming on plant populations in mountains, because of the importance of small-scale variation in environmental conditions.
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Affiliation(s)
- Laura Daco
- Department of Biology, University of Marburg, Karl-von-Frisch-Str. 8, 35043 Marburg, Germany
- Musée national d’histoire naturelle, 25 rue Münster, L-2160 Luxembourg, Luxembourg
- Fondation Faune-Flore, 24 rue Münster, L-2160 Luxembourg, Luxembourg
| | - Guy Colling
- Musée national d’histoire naturelle, 25 rue Münster, L-2160 Luxembourg, Luxembourg
| | - Diethart Matthies
- Department of Biology, University of Marburg, Karl-von-Frisch-Str. 8, 35043 Marburg, Germany
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4
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Mixed evidence for shifts to faster carbon capture strategies towards range edges of two coastal invasive plants in eastern Australia. Biol Invasions 2020. [DOI: 10.1007/s10530-019-02111-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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5
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Davey MP, Palmer BG, Armitage E, Vergeer P, Kunin WE, Woodward FI, Quick WP. Natural variation in tolerance to sub-zero temperatures among populations of Arabidopsis lyrata ssp. petraea. BMC PLANT BIOLOGY 2018; 18:277. [PMID: 30419829 PMCID: PMC6233594 DOI: 10.1186/s12870-018-1513-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Accepted: 10/31/2018] [Indexed: 05/25/2023]
Abstract
BACKGROUND Temperature is one of the most important abiotic factors limiting plant growth and productivity. Many plants exhibit cold acclimation to prepare for the likelihood of freezing as temperatures decrease towards 0 °C. The physiological mechanisms associated with enabling increased tolerance to sub-zero temperatures vary between species and genotypes. Geographically and climatically diverse populations of Arabidopsis lyrata ssp. petraea were examined for their ability to survive, maintain functional photosynthetic parameters and cellular electrolyte leakage integrity after being exposed to sub-zero temperatures. The duration of cold acclimation prior to sub-zero temperatures was also manipulated (2 and 14 days). RESULTS We found that there was significant natural variation in tolerances to sub-zero temperatures among populations of A. petraea. The origin of the population affected the acclimation response and survival after exposure to sub-zero temperatures. Cold acclimation of plants prior to sub-zero temperatures affected the maximum quantum efficiency of photosystem II (PSII) (Fv/Fm) in that plants that were cold acclimated for longer periods had higher values of Fv/Fm as a result of sub-zero temperatures. The inner immature leaves were better able to recover Fv/Fm from sub-zero temperatures than mature outer leaves. The Irish population (Leitrim) acclimated faster, in terms of survival and electrolyte leakage than the Norwegian population (Helin). CONCLUSION The ability to survive, recover photosynthetic processes and cellular electrolyte leakage after exposure to sub-zero temperatures is highly dependent on the duration of cold acclimation.
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Affiliation(s)
- Matthew P. Davey
- Current address: Department of Plant Sciences, Downing Street, Cambridge, CB2 3EA UK
- Animal and Plant Sciences, Western Bank, University of Sheffield, Sheffield, UK
| | - Ben G. Palmer
- Animal and Plant Sciences, Western Bank, University of Sheffield, Sheffield, UK
| | - Emily Armitage
- Animal and Plant Sciences, Western Bank, University of Sheffield, Sheffield, UK
| | - Philippine Vergeer
- Plant Ecology and Nature Conservation Group, Wageningen University, Wageningen, The Netherlands
| | - William E. Kunin
- Institute of Integrative and Comparative Biology, University of Leeds, Leeds, UK
| | - F. Ian Woodward
- Animal and Plant Sciences, Western Bank, University of Sheffield, Sheffield, UK
| | - W. Paul Quick
- Animal and Plant Sciences, Western Bank, University of Sheffield, Sheffield, UK
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Omari S, Kamenir Y, Benichou JIC, Pariente S, Sela H, Perl-Treves R. Landraces of snake melon, an ancient Middle Eastern crop, reveal extensive morphological and DNA diversity for potential genetic improvement. BMC Genet 2018; 19:34. [PMID: 29792158 PMCID: PMC5966880 DOI: 10.1186/s12863-018-0619-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Accepted: 04/30/2018] [Indexed: 12/05/2022] Open
Abstract
Background Snake melon (Cucumis melo var. flexuosus, “Faqqous”) is a traditional and ancient vegetable in the Mediterranean area. A collection of landraces from 42 grower fields in Israel and Palestinian territories was grown and characterized in a “Common Garden” rain-fed experiment, at the morphological-horticultural and molecular level using seq-DArT markers. Results The different landraces (“populations”) showed extensive variation in morphology and quantitative traits such as yield and femaleness, and clustered into four horticultural varieties. Yield was assessed by five harvests along the season, with middle harvests producing the highest yields. Yield correlated with early vigor, and with femaleness, but not with late vigor. At the molecular level, 2784 SNP were produced and > 90% were mapped to the melon genome. Populations were very polymorphic (46–72% of the markers biallelic in a 4 individuals sample), and observed heterozygosity was higher than the expected, suggesting gene flow among populations and extensive cross pollination among individuals in the field. Genetic distances between landraces were significantly correlated with the geographical distance between collecting sites, and with long term March precipitation average; variation in yield correlated with April temperature maxima. Conclusions The extensive variation suggests that selection of local snake melon could result in yield improvement. Correlations between traits and climatic variables could suggest local adaptation of landraces to the diverse environment in which they evolved. This study stresses the importance of preserving this germplasm, and its potential for breeding better snake melons as an heirloom crop in our region. Electronic supplementary material The online version of this article (10.1186/s12863-018-0619-6) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Samer Omari
- Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Yuri Kamenir
- Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Jennifer I C Benichou
- Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Sarah Pariente
- Department of Geography and Environment, Bar Ilan University, 5290002, Ramat Gan, Israel
| | - Hanan Sela
- Cereal Crop Improvement Institute, Faculty of Life Sciences, Tel-Aviv University, 6997801, Tel Aviv, Israel
| | - Rafael Perl-Treves
- Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, 5290002, Ramat Gan, Israel.
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Tabassum S, Leishman MR. Does enemy damage vary across the range of exotic plant species? Evidence from two coastal dune plant species in eastern Australia. Oecologia 2017; 186:303-309. [PMID: 29164370 DOI: 10.1007/s00442-017-4008-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Accepted: 11/09/2017] [Indexed: 11/27/2022]
Abstract
Release from natural enemies is often cited as a key factor for understanding the success of invasive plant species in novel environments. However, with time invasive species will accumulate native enemies in their invaded range, with factors such as spread distance from the site of introduction, climate and leaf-level traits potentially affecting enemy acquisition rates. However, the influence of such factors is difficult to assess without examining enemy attack across the entire species' range. We tested the significance of factors associated with range expansion (distance from source population and maximum population density), climatic variables (annual temperature and rainfall) and leaf-level traits [specific leaf area (SLA) and foliar nitrogen concentration] in explaining variation in enemy damage across multiple populations of two coastal invasive plants (Gladiolus gueinzii Kunze and Hydrocotyle bonariensis Lam.) along their entire introduced distribution in eastern Australia. We found that for H. bonariensis, amount of foliar damage increased with distance from source population. In contrast, for G. gueinzii, probability and amount of foliar damage decreased with decreasing temperature and increasing rainfall, respectively. Our results show that patterns of enemy attack across species' ranges are complex and cannot be generalised between species or even range edges.
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Affiliation(s)
- Samiya Tabassum
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia.
| | - Michelle R Leishman
- Department of Biological Sciences, Macquarie University, Sydney, NSW, 2109, Australia
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Cochrane A, Hoyle GL, Yates CJ, Neeman T, Nicotra AB. Variation in plant functional traits across and within four species of Western AustralianBanksia(Proteaceae) along a natural climate gradient. AUSTRAL ECOL 2016. [DOI: 10.1111/aec.12381] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anne Cochrane
- Evolution, Ecology and Genetics, Research School of Biology; The Australian National University; Canberra Australian Capital Territory Australia
- Science and Conservation Division, Department of Parks and Wildlife, Locked Bag 104; Bentley Delivery Centre; Western Australia 6983 Australia
| | - Gemma L. Hoyle
- Evolution, Ecology and Genetics, Research School of Biology; The Australian National University; Canberra Australian Capital Territory Australia
| | - Colin J. Yates
- Science and Conservation Division, Department of Parks and Wildlife, Locked Bag 104; Bentley Delivery Centre; Western Australia 6983 Australia
| | - Teresa Neeman
- Statistical Consulting Unit; The Australian National University; Canberra Australian Capital Territory Australia
| | - Adrienne B. Nicotra
- Evolution, Ecology and Genetics, Research School of Biology; The Australian National University; Canberra Australian Capital Territory Australia
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9
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Joschinski J, van Kleunen M, Stift M. Costs associated with the evolution of selfing in North American populations of Arabidopsis lyrata? Evol Ecol 2015. [DOI: 10.1007/s10682-015-9786-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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10
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Armstrong JJ, Takebayashi N, Sformo T, Wolf DE. Cold tolerance in Arabidopsis kamchatica. AMERICAN JOURNAL OF BOTANY 2015; 102:439-448. [PMID: 25784477 DOI: 10.3732/ajb.1400373] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
UNLABELLED • PREMISE OF THE STUDY Cold tolerance is a critically important factor determining how plants will be influenced by climate change, including changes in snowcover and extreme weather events. Although a great deal is known about cold tolerance in Arabidopsis thaliana, it is not highly cold tolerant. This study examined cold tolerance and its genetic diversity in an herbaceous subarctic relative, Arabidopsis kamchatica, which generally occurs in much colder climates.• METHODS Thermal analysis and electrolyte leakage were used to estimate supercooling points and lethal temperatures (LT50) in cold-acclimated and nonacclimated families from three populations of A. kamchatica.• KEY RESULTS Arabidopsis kamchatica was highly cold tolerant, with a mean LT50 of -10.8°C when actively growing, and -21.8°C when cold acclimated. It also was able to supercool to very low temperatures. Surprisingly, actively growing plants supercooled more than acclimated plants (-14.7 vs. -12.7°C). There was significant genetic variation for cold tolerance both within and among populations. However, both cold tolerance and genetic diversity were highest in the midlatitude population rather than in the far north, indicating that adaptations to climate change are most likely to arise in the center of the species range rather than at the edges.• CONCLUSIONS Arabidopsis kamchatica is highly cold tolerant throughout its range. It is far more freeze tolerant than A. thaliana, and supercooled to lower temperatures, suggesting that A. kamchatica provides a valuable complement to A. thaliana for cold tolerance research.
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Affiliation(s)
- Jessica J Armstrong
- University of Alaska Fairbanks, Institute of Arctic Biology and Department of Biology and Wildlife, 311 Irving I, Fairbanks, Alaska 99775 USA University of Alaska Fairbanks, College of Natural Sciences and Mathematics, 900 Yukon Drive, Room 358, Fairbanks, Alaska 99775 USA
| | - Naoki Takebayashi
- University of Alaska Fairbanks, Institute of Arctic Biology and Department of Biology and Wildlife, 311 Irving I, Fairbanks, Alaska 99775 USA
| | - Todd Sformo
- University of Alaska Fairbanks, Institute of Arctic Biology and Department of Biology and Wildlife, 311 Irving I, Fairbanks, Alaska 99775 USA Department of Wildlife Management/ North Slope Borough, Barrow, Alaska 99723 USA
| | - Diana E Wolf
- University of Alaska Fairbanks, Institute of Arctic Biology and Department of Biology and Wildlife, 311 Irving I, Fairbanks, Alaska 99775 USA
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11
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Falahati-Anbaran M, Lundemo S, Ansell SW, Stenøien HK. Contrasting patterns of genetic structuring in natural populations of Arabidopsis lyrata Subsp. petraea across different regions in northern Europe. PLoS One 2014; 9:e107479. [PMID: 25226024 PMCID: PMC4166467 DOI: 10.1371/journal.pone.0107479] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Accepted: 08/11/2014] [Indexed: 01/08/2023] Open
Abstract
Level and partitioning of genetic diversity is expected to vary between contrasting habitats, reflecting differences in strength of ecological and evolutionary processes. Therefore, it is necessary to consider processes acting on different time scales when trying to explain diversity patterns in different parts of species' distributions. To explore how historical and contemporary factors jointly may influence patterns of genetic diversity and population differentiation, we compared genetic composition in the perennial herb Arabidopsis lyrata ssp. petraea from the northernmost parts of its distribution range on Iceland to that previously documented in Scandinavia. Leaf tissue and soil were sampled from ten Icelandic populations of A. lyrata. Seedlings were grown from soil samples, and tissue from above-ground and seed bank individuals were genotyped with 21 microsatellite markers. Seed bank density in Icelandic populations was low but not significantly different from that observed in Norwegian populations. While within-population genetic diversity was relatively high on Iceland (H(E) = 0.35), among-population differentiation was low (F(ST) = 0.10) compared to Norwegian and Swedish populations. Population differentiation was positively associated with geographical distance in both Iceland and Scandinavia, but the strength of this relationship varied between regions. Although topography and a larger distribution range may explain the higher differentiation between mountainous Norwegian relative to lowland populations in Sweden, these factors cannot explain the lower differentiation in Icelandic compared to Swedish populations. We propose that low genetic differentiation among Icelandic populations is not caused by differences in connectivity, but is rather due to large historical effective population sizes. Thus, rather than contemporary processes, historical factors such as survival of Icelandic lineages in northern refugia during the last glacial period may have contributed to the observed pattern.
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Affiliation(s)
- Mohsen Falahati-Anbaran
- Department of Biology, Norwegian University of Science and Technology (NTNU), Trondheim, Norway; NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway; School of Biology and Center of Excellence in Phylogeny of Living Organisms, University of Tehran, Tehran, Iran
| | - Sverre Lundemo
- NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway; Department of Ecology and Genetics, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden
| | - Stephen W Ansell
- Department of Life Sciences, Natural History Museum, London, United Kingdom
| | - Hans K Stenøien
- NTNU University Museum, Norwegian University of Science and Technology, Trondheim, Norway
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Cochrane JA, Hoyle GL, Yates CJ, Wood J, Nicotra AB. Climate warming delays and decreases seedling emergence in a Mediterranean ecosystem. OIKOS 2014. [DOI: 10.1111/oik.01359] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. Anne Cochrane
- Evolution, Ecology and Genetics, Research School of Biology, The Australian National Univ.; Canberra ACT 0200 Australia
- Science and Conservation Division; Dept of Parks and Wildlife; Locked Bag 104 Bentley Delivery Centre, Western Australia 6983 Australia
| | - Gemma L. Hoyle
- Evolution, Ecology and Genetics, Research School of Biology, The Australian National Univ.; Canberra ACT 0200 Australia
| | - Colin. J. Yates
- Evolution, Ecology and Genetics, Research School of Biology, The Australian National Univ.; Canberra ACT 0200 Australia
| | - Jeff Wood
- Statistical Consulting Unit, The Australian National Univ.; Canberra ACT 0200 Australia
| | - Adrienne B. Nicotra
- Evolution, Ecology and Genetics, Research School of Biology, The Australian National Univ.; Canberra ACT 0200 Australia
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Hoyle GL, Cordiner H, Good RB, Nicotra AB. Effects of reduced winter duration on seed dormancy and germination in six populations of the alpine herb Aciphyllya glacialis (Apiaceae). CONSERVATION PHYSIOLOGY 2014; 2:cou015. [PMID: 27293636 PMCID: PMC4806741 DOI: 10.1093/conphys/cou015] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2013] [Revised: 03/02/2014] [Accepted: 03/27/2014] [Indexed: 05/13/2023]
Abstract
The life stages of seed germination and seedling establishment play a vital role in maintaining plant populations and determining range dynamics of species. Thus, it is not surprising that specific germination requirements and dormancy mechanisms have evolved in all major angiosperm clades. In a rapidly changing climate, we face growing pressure to manage, conserve and restore native plant species and communities. To achieve these aims, we require solid knowledge of whether and how seed germination requirements and dormancy status vary between different populations of a given species and how germination strategies may be affected by warming climatic conditions. We assessed the effect of decreasing durations of cold stratification (i.e. conditions representing a shortened winter as predicted under climate change) on germination and dormancy of the alpine herb Aciphylla glacialis. Our results confirmed previous research showing that A. glacialis seeds possess physiological dormancy that can be alleviated by cold stratification. In addition, the results demonstrated that A. glacialis seeds have underdeveloped embryos at dispersal; these grow to germinable size following 4-9 weeks at both constant 5°C and 10-5°C (day-night) temperatures. We conclude that A. glacialis exhibits morphophysiological dormancy. Furthermore, we found that the final percentage germination and dormancy status varied significantly among natural populations and that this variation did not correlate with elevation at the site of seed origin. Seeds germinated following 6-8 weeks of cold stratification, and seedlings showed no detrimental effects as a result of shorter stratification periods. Together, these results suggest that reduced duration of winter is unlikely to have direct negative impacts on germination or early seedling growth in A. glacialis. The causes and implications of the population variation in germination traits are discussed.
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Affiliation(s)
- G. L. Hoyle
- Division of Evolution, Ecology and Genetics, Research School of Biology, Australian National University, Canberra, ACT 0200, Australia
| | - H. Cordiner
- Division of Evolution, Ecology and Genetics, Research School of Biology, Australian National University, Canberra, ACT 0200, Australia
| | - R. B. Good
- Australian National Botanical Gardens, Clunies Ross Street, Acton, Canberra, ACT 2601, Australia
- Fenner School of the Environment, Australian National University, Canberra, ACT 0200, Australia
| | - A. B. Nicotra
- Division of Evolution, Ecology and Genetics, Research School of Biology, Australian National University, Canberra, ACT 0200, Australia
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14
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Weinig C, Ewers BE, Welch SM. Ecological genomics and process modeling of local adaptation to climate. CURRENT OPINION IN PLANT BIOLOGY 2014; 18:66-72. [PMID: 24631846 DOI: 10.1016/j.pbi.2014.02.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 01/23/2014] [Accepted: 02/14/2014] [Indexed: 06/03/2023]
Abstract
Locally adapted genotypes have higher fitness in their native site in comparison to foreign genotypes. Recent studies have demonstrated both local adaptation to and genomic associations with a range of climate variables. For climate adaptation, the most common genomic pattern is conditional neutrality, as proven by weak across-environment correlations, frequent SNP×environment interactions, and the topology of some developmental and physiological pathways potentially involved in local adaptation. Genomic association approaches readily translate to non-model systems, and genetically explicit climate envelope models will predict future species' distributions under changing climates. Here, we review recent evidence for local adaptation to climate, focusing primarily on the model system, Arabidopsis thaliana, and on studies incorporating genomic tools into field studies or climate analyses.
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Affiliation(s)
- Cynthia Weinig
- Department of Botany, University of Wyoming, Laramie, WY 82071, USA; Program in Ecology, University of Wyoming, Laramie, WY 82071, USA; Department of Molecular Biology, University of Wyoming, Laramie, WY 82071, USA.
| | - Brent E Ewers
- Department of Botany, University of Wyoming, Laramie, WY 82071, USA; Program in Ecology, University of Wyoming, Laramie, WY 82071, USA
| | - Stephen M Welch
- Department of Agronomy, Kansas State University, Manhattan, KS 66506, USA
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15
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Herbivory at marginal populations: Consequences for maternal fitness and vegetative differentiation. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2013. [DOI: 10.1016/j.actao.2013.02.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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16
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Quilot-Turion B, Leppälä J, Leinonen PH, Waldmann P, Savolainen O, Kuittinen H. Genetic changes in flowering and morphology in response to adaptation to a high-latitude environment in Arabidopsis lyrata. ANNALS OF BOTANY 2013; 111:957-68. [PMID: 23519836 PMCID: PMC3631339 DOI: 10.1093/aob/mct055] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 01/29/2013] [Indexed: 05/08/2023]
Abstract
BACKGROUND AND AIMS The adaptive plastic reactions of plant populations to changing climatic factors, such as winter temperatures and photoperiod, have changed during range shifts after the last glaciation. Timing of flowering is an adaptive trait regulated by environmental cues. Its genetics has been intensively studied in annual plants, but in perennials it is currently not well characterized. This study examined the genetic basis of differentiation in flowering time, morphology, and their plastic responses to vernalization in two locally adapted populations of the perennial Arabidopsis lyrata: (1) to determine whether the two populations differ in their vernalization responses for flowering phenology and morphology; and (2) to determine the genomic areas governing differentiation and vernalization responses. METHODS Two A. lyrata populations, from central Europe and Scandinavia, were grown in growth-chamber conditions with and without cold treatment. A QTL analysis was performed to find genomic regions that interact with vernalization. KEY RESULTS The population from central Europe flowered more rapidly and invested more in inflorescence growth than the population from alpine Scandinavia, especially after vernalization. The alpine population had consistently a low number of inflorescences and few flowers, suggesting strong constraints due to a short growing season, but instead had longer leaves and higher leaf rosettes. QTL mapping in the F2 population revealed genomic regions governing differentiation in flowering time and morphology and, in some cases, the allelic effects from the two populations on a trait were influenced by vernalization (QTL × vernalization interactions). CONCLUSIONS The results indicate that many potentially adaptive genetic changes have occurred during colonization; the two populations have diverged in their plastic responses to vernalization in traits closely connected to fitness through changes in many genomic areas.
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Vergeer P, Kunin WE. Adaptation at range margins: common garden trials and the performance of Arabidopsis lyrata across its northwestern European range. THE NEW PHYTOLOGIST 2013; 197:989-1001. [PMID: 23278159 DOI: 10.1111/nph.12060] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2012] [Accepted: 10/20/2012] [Indexed: 06/01/2023]
Abstract
Widely distributed species, such as the perennial plant Arabidopsis lyrata, face a range of environmental conditions across space, creating selective pressures for local evolutionary adaptation. The species' fragmented distribution may reduce gene flow, which could either reduce or increase adaptive potential. The substantial variation in phenotypic traits observed across this species' northwestern European range may reflect a combination of plastic responses to environmental conditions, evolutionary adaptation and nonadaptive genetic differentiation. We conducted multi-site common garden experiments to study differences in plant performance in core and marginal areas. Plants from eight source populations representing the species' full geographic and altitudinal range in northwestern Europe were planted out in Iceland, Sweden, Scotland and Wales. We found evidence of both strong plastic responses and apparently adaptive differentiation in performance. Most evidence for local adaptation was found at range margins, with the strongest effects on reproductive output. Both biotic and abiotic factors affected performance, especially at range margins. Performance of most plants was best in the Scottish and Swedish common garden sites, in the core of the species' distribution. Despite adaptations at range margins, the performance of the species declines at distributional limits, with extreme southern populations looking particularly vulnerable.
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Affiliation(s)
- Philippine Vergeer
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
| | - William E Kunin
- School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, LS2 9JT, UK
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Leinonen PH, Remington DL, Leppälä J, Savolainen O. Genetic basis of local adaptation and flowering time variation in Arabidopsis lyrata. Mol Ecol 2012; 22:709-23. [PMID: 22724431 DOI: 10.1111/j.1365-294x.2012.05678.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Understanding how genetic variation at individual loci contributes to adaptation of populations to different local environments is an important topic in modern evolutionary biology. To date, most evidence has pointed to conditionally neutral quantitative trait loci (QTL) showing fitness effects only in some environments, while there has been less evidence for single-locus fitness trade-offs. At QTL underlying local adaptation, alleles from the local population are expected to show a fitness advantage. Cytoplasmic genomes also can have a role in local adaptation, but the role of cytonuclear interactions in adaptive differentiation has remained largely unknown. We mapped genomic regions underlying adaptive differentiation in multiple fitness components and flowering time in diverged populations of a perennial plant Arabidopsis lyrata. Experimental hybrids for this purpose were grown in natural field conditions of the parental populations in Norway and North Carolina (NC), USA, and in the greenhouse. We found QTL where high fitness and early flowering were associated with local alleles, indicating a role of different selection pressures in phenotypic differentiation. At two QTL regions, a fitness component showing local adaptation between the parental populations also showed signs of putative fitness trade-offs. Beneficial dominance effects of conditionally neutral QTL for different fitness components resulted in hybrid vigour at the Norwegian site in the F(2) hybrids. We also found that cytoplasmic genomes contributed to local adaptation and hybrid vigour by interacting with nuclear QTL, but these interactions did not show evidence for cytonuclear coadaptation (high fitness of local alleles combined with the local cytoplasm).
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Sletvold N, Ågren J. Variation in tolerance to drought among Scandinavian populations of Arabidopsis lyrata. Evol Ecol 2011. [DOI: 10.1007/s10682-011-9502-x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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