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Blake-Mahmud J, Sessa EB, Visger CJ, Watkins JE. Polyploidy and environmental stress response: a comparative study of fern gametophytes. THE NEW PHYTOLOGIST 2024. [PMID: 39044655 DOI: 10.1111/nph.19969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Accepted: 06/24/2024] [Indexed: 07/25/2024]
Abstract
Climate change is rapidly altering natural habitats and generating complex patterns of environmental stress. Ferns are major components of many forest understories and, given their independent gametophyte generation, may experience unique pressures in emerging temperature and drought regimes. Polyploidy is widespread in ferns and may provide a selective advantage in these rapidly changing environments. This work aimed to understand whether the gametophytes of allopolyploid ferns respond differently to climate-related physiological stress than their diploid parents. The experimental approach involved a multifactorial design with 27 treatment combinations including exposure to multiple levels of drought and temperature over three treatment durations, with recovery measured at multiple timepoints. We measured Chl fluorescence from over 2000 gametophytes to evaluate stress avoidance and tolerance in diploid and polyploid species. Polyploids generally showed a greater ability to avoid and/or tolerate a range of stress conditions compared with their diploid counterparts, suggesting that polyploidy may confer enhanced flexibility and resilience under climate stress. Overall, these results suggest that polyploidy may provide some resilience to climate change in mixed ploidy populations. However, all species remain susceptible to the impacts of extreme drought and heat stress.
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Affiliation(s)
| | - Emily B Sessa
- William & Lynda Steere Herbarium, New York Botanical Garden, Bronx, NY, 10458, USA
| | - Clayton J Visger
- Department of Biological Sciences, California State University, Sacramento, CA, 95819, USA
| | - James E Watkins
- Department of Biology, Colgate University, 13 Oak Drive, Hamilton, NY, 13346, USA
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Suárez-Santiago VN, Provan J, Romero-García AT, Ben-Menni Schuler S. Genetic Diversity and Phylogeography of the Relict Tree Fern Culcita macrocarpa: Influence of Clonality and Breeding System on Genetic Variation. PLANTS (BASEL, SWITZERLAND) 2024; 13:1587. [PMID: 38931019 PMCID: PMC11207926 DOI: 10.3390/plants13121587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Revised: 06/02/2024] [Accepted: 06/05/2024] [Indexed: 06/28/2024]
Abstract
The tree fern Culcita macrocarpa, a threatened Iberian-Macaronesian endemism, represents the sole European species of the order Cyatheales. Considered a Tertiary relict of European Palaeotropical flora, its evolutionary history and genetic diversity, potentially influenced by presumed high clonal propagation, remain largely unknown. This study elucidates the phylogeographic history of C. macrocarpa, assessing the impact of vegetative reproduction on population dynamics and genetic variability. We provide genetic data from eight newly identified nuclear microsatellite loci and one plastid DNA region for 17 populations spanning the species' range, together with species distribution modeling data. Microsatellites reveal pervasive clonality in C. macrocarpa, which has varied among populations. We assess the impact of clonality on genetic diversity and evaluate how estimates of intra-population genetic diversity indices and genetic structuring are affected by the chosen definition of "individual" (focusing exclusively on genetically distinct individuals, genets, as opposed to considering all independent clonal replicates, ramets). We identify two main population groups, one in the northern Iberian Peninsula and the other in the Macaronesian archipelagos and southern Iberian Peninsula. Within each group, we found relict populations (in the Azores and the Cantabrian Cornice) as well as recent originated populations. This population structure suggests colonization dynamics in which recent populations originated from one or a few genets of relict populations and became established through intra-gametophytic self-fertilization and vegetative expansion. DAPC analysis facilitated the identification of alleles that most significantly contributed to the observed population structure. The current Andalusian populations appear to have originated from colonization events from the Azores and the Cantabrian Cornice. Our findings suggest that C. macrocarpa persisted through the Last Glacial Maximum in two refugia: the Azores and the Cantabrian Cornice. Colonization into new areas occurred presumably from these refuges, generating two large population groups with structured genetic diversity. This study underscores the significance of clonality in establishing new populations and shaping genetic structure.
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Affiliation(s)
| | - Jim Provan
- Institute of Biological, Environmental and Rural Sciences, Aberystwyth University, Aberystwyth SY23 3DA, UK
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Shang H, Xue ZQ, Liang ZL, Kessler M, Pollawatn R, Lu NT, Gu YF, Fan XP, Tan YH, Zhang L, Zhou XM, Wan X, Zhang LB. Splitting one species into 22: an unusual tripling of molecular, morphological, and geographical differentiation in the fern family Didymochlaenaceae (Polypodiales). Cladistics 2023. [PMID: 37084123 DOI: 10.1111/cla.12539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2022] [Revised: 03/06/2023] [Accepted: 03/21/2023] [Indexed: 04/22/2023] Open
Abstract
The pantropical fern genus Didymochlaena (Didymochlaenaceae) has long been considered to contain one species only. Recent studies have resolved this genus/family as either sister to the rest of eupolypods I or as the second branching lineage of eupolypods I, and have shown that this genus is not monospecific, but the exact species diversity is unknown. In this study, a new phylogeny is reconstructed based on an expanded taxon sampling and six molecular markers. Our major results include: (i) Didymochlaena is moderately or weakly supported as sister to the rest of eupolypods I, highlighting the difficulty in resolving the relationships of this important fern lineage in the polypods; (ii) species in Didymochlaena are resolved into a New World clade and an Old World clade, and the latter further into an African clade and an Asian-Pacific clade; (iii) an unusual tripling of molecular, morphological and geographical differentiation in Didymochlaena is detected, suggesting single vicariance or dispersal events in individual regions and no evidence for reversals at all, followed by allopatric speciation at more or less homogeneous rates; (iv) evolution of 18 morphological characters is inferred and two morphological synapomorphies defining the family are recognized-the elliptical sori and fewer than 10 sori per pinnule, the latter never having been suggested before; (v) based on morphological and molecular variation, 22 species in the genus are recognized contrasting with earlier estimates of between one and a few; and (vi) our biogeographical analysis suggests an origin for Didymochlaena in the latest Jurassic-earliest Cretaceous and the initial diversification of the extant lineages in the Miocene-all but one species diverged from their sisters within the last 27 Myr, in most cases associated with allopatric speciation owing to geologic and climatic events, or dispersal.
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Affiliation(s)
- Hui Shang
- Eastern China Conservation Centre for Wild Endangered Plant Resources, Shanghai Chenshan Botanical Garden, Shanghai, 201602, China
- Missouri Botanical Garden, 4344 Shaw Blvd, St Louis, MO, 63110, USA
| | - Zhi-Qing Xue
- Eastern China Conservation Centre for Wild Endangered Plant Resources, Shanghai Chenshan Botanical Garden, Shanghai, 201602, China
- Department of Botany and Biodiversity Research, Faculty of Life Sciences, University of Vienna, Rennweg 14, 1030, Vienna, Austria
| | - Zhen-Long Liang
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China
| | - Michael Kessler
- Systematic and Evolutionary Botany, University of Zurich, Zollikerstrasse 107, 8008, Zurich, Switzerland
| | - Rossarin Pollawatn
- Plants of Thailand Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Ngan Thi Lu
- Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18th Hoang Quoc Viet Road, Ha Noi, Vietnam
| | - Yu-Feng Gu
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, The National Orchid Conservation & Research Center of Shenzhen, Shenzhen, Guangdong, 518114, China
| | - Xue-Ping Fan
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650201, China
| | - Yun-Hong Tan
- Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Mengla, Yunnan, 666303, China
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan, 666303, China
- Center of Conservation Biology, Core Botanical Gardens, Chinese Academy of Sciences, Mengla, Yunnan, 666303, China
| | - Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650201, China
| | - Xin-Mao Zhou
- School of Ecology and Environmental Science, Yunnan University, Kunming, Yunnan, 650091, China
| | - Xia Wan
- Missouri Botanical Garden, 4344 Shaw Blvd, St Louis, MO, 63110, USA
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China
- College of Life Sciences, Sichuan University, Chengdu, 610065, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Li-Bing Zhang
- Missouri Botanical Garden, 4344 Shaw Blvd, St Louis, MO, 63110, USA
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China
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Nie LY, Zhang L, Liang ZL, Pollawatn R, Yan YH, Thi Lu N, Knapp R, Wan X, Cicuzza D, Cheng XX, Chen HF, Wang AH, Liao YJ, Wang FG, Zhang LB. Phylogeny, character evolution, and biogeography of the fern genus Bolbitis (Dryopteridaceae). Mol Phylogenet Evol 2023; 178:107633. [PMID: 36182051 DOI: 10.1016/j.ympev.2022.107633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2022] [Revised: 09/04/2022] [Accepted: 09/23/2022] [Indexed: 12/14/2022]
Abstract
Bolbitis is a pantropical fern genus of Dryopteridaceae with ca. 80 species mainly in tropical Asia. Earlier studies confirmed the monophyly of Bolbitis when Mickelia is excluded and identified three major clades in Bolbitis. However, earlier studies are based on relatively small sampling and the majority of Asian species are not sampled. In this study, DNA sequences of three plastid markers of 169 accessions representing ca. 68 (85 % of total) species of Bolbitis in nine out of the 10 series recognized by Hennipman (1977), and 54 accessions representing the five remaining bolbitidoid genera are used to infer a global phylogeny with a focus on Asian species. The major results include: (1) Bolbitis is strongly supported as monophyletic; (2) species of Bolbitis are resolved into four major clades and their relationships are: the Malagasy/Mascarene clade is sister to the rest, followed by the African clade which is sister to the American clade + the Asian clade; (3) six well-supported subclades are identified in the most speciose Asian clade; (4) the free-veined Egenolfia is embedded in Bolbitis and is paraphyletic in relation to species with anastomosing venation; (5) three series sensu Hennipman (1977), B. ser. Alienae, B. ser. Egenolfianae, and B. ser. Heteroclitae, are paraphyletic or polyphyletic; (6) evolution of six morphological characters is analyzed and free venation is found to have evolved from anastomosing venation and reversed to free venation in Bolbitis; and (7) biogeographical implications are drawn and it is shown that a single recent dispersal from Asia resulted in continental disjunction of closely related ferns of Bolbitis between Africa and America.
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Affiliation(s)
- Li-Yun Nie
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China
| | - Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Zhen-Long Liang
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China
| | - Rossarin Pollawatn
- Plant of Thailand Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok 10330, Thailand
| | - Yue-Hong Yan
- Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization, The National Orchid Conservation Center of China and the Orchid Conservation & Research Center of Shenzhen, Shenzhen, Guangdong 518114, China
| | - Ngan Thi Lu
- Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18th Hoang Quoc Viet Road, Ha Noi, Viet Nam; Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Viet Nam
| | - Ralf Knapp
- Correspondent of the Muséum National d'Histoire naturelle (MNHN, Paris, France), Steigestrasse 78, 69412 Eberbach, Germany
| | - Xia Wan
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China
| | - Daniele Cicuzza
- Universiti Brunei Darussalam Faculty of Science, Jalan Tungku Link, BE1410, Brunei Darussalam; Universiti Brunei Darussalam Botanical Research Centre, Institute for Biodiversity and Environmental Research, Jalan Tungku Link, BE1410, Brunei Darussalam
| | - Xin-Xin Cheng
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China
| | - Hong-Feng Chen
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China
| | - Ai-Hua Wang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China; Key Laboratory of Environment Change and Resources Use in Beibu Gulf, Nanning Normal University, Nanning, Guangxi 530001, China
| | - Yu-Jie Liao
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China
| | - Fa-Guo Wang
- Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, Guangdong 510650, China.
| | - Li-Bing Zhang
- Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, Sichuan 610041, China; Missouri Botanical Garden, 4344 Shaw Blvd, St. Louis, MO 63110, USA.
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Park SH, Kim JS, Kim HT. Asplenium pseudocapillipes (Aspleniaceae), a New Fern Species from South Korea. PLANTS (BASEL, SWITZERLAND) 2022; 11:3089. [PMID: 36432818 PMCID: PMC9696321 DOI: 10.3390/plants11223089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 11/04/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
A new allotetraploid species of the genus Asplenium, A. pseudocapillipes, originated from the hybridization between A. capillipes and A. tenuicaule, has been newly discovered in two limestone areas of South Korea. A molecular phylogenetic analysis using one chloroplast region (rbcL) and three single- or low-copy nuclear regions (AK1, gapCp, pgiC) and a cytological analysis, including genome size measurements, were conducted to characterize this new species. From these results, the maternal origin of A. pseudocapillipes was confirmed to be A. capillipes, which has never been reported in Korea. All three nuclear data showed that this new species had genotypes of both A. capillipes and A. tenuicaule. The quantitative characteristics of the leaves showed values intermediate between the two parental species. The absence of gemma accorded with its paternal origin from A. tenuicaule, and 32 spores per sporangium accorded with its maternal origin from A. capillipes. Although A. pseudocapillipes has 32 spores per sporangium, it is considered to be a sexually reproducing, not an apomitic, fern.
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Affiliation(s)
- Sang Hee Park
- Department of Forest Science, Chungbuk National University, Chungdae-Ro 1, Seowon-Gu, Cheongju 28644, Chungbuk, Korea
| | - Jung Sung Kim
- Department of Forest Science, Chungbuk National University, Chungdae-Ro 1, Seowon-Gu, Cheongju 28644, Chungbuk, Korea
| | - Hyoung Tae Kim
- Department of Ecological and Environmental System, Kyungpook National University, Gyeongsang-Daero, Sangju-Si 37224, Gyeongsangbuk-Do, Korea
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Zhang L, Zhang LB. Phylogeny, character evolution, and systematics of the fern family Ophioglossaceae based on Sanger sequence data, plastomes, and morphology. Mol Phylogenet Evol 2022; 173:107512. [PMID: 35595007 DOI: 10.1016/j.ympev.2022.107512] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 03/17/2022] [Accepted: 04/05/2022] [Indexed: 11/26/2022]
Abstract
Adder's tongue ferns or Ophioglossaceae are best known among evolutionary biologists and botanists for their highest chromosome count of any known organisms, the presence of sporophores, and simple morphology. Previous studies recovered and strongly supported the monophyly of the family and the two multi-generic subfamilies, Botrychioideae and Ophioglossoideae, but the relationships among these and two other subfamilies (Helminthostachyoideae and Mankyuoideae) are not well resolved preventing us from understanding the character evolution. The monophyly of and the relationships in the species-rich genus, Ophioglossum, have not well been understood. In this study, new phylogenetic trees are reconstructed based on four datasets: Sanger sequences of eight plastid markers of 184 accessions, 22 plastomes (12 are new), 29 morphological characters, and combined Sanger and morphological data. Our major results include: (1) the relationships among the four subfamilies are well resolved and strongly supported in Bayesian and parsimony analyses based on plastomes: Mankyua is sister to the rest, followed by Ophioglossoideae which are sister to Helminthostachys + Botrychioideae; (2) Sanger data, plastomes, and combined Sanger and morphological data recovered and strongly supported the monophyly of Ophioglossum in its current circumscription (sensu lato; s.l.) in Bayesian and/or parsimony analyses; (3) within Ophioglossum s.l., four deeply diverged clades are identified and the relationships among the four clades are well resolved; (4) evolution of 34 morphological characters is analyzed in the context of the new phylogeny, among which shape of rhizomes, germination time of spores, shape of early gametophytes, and a number of other characters are found to contain interesting phylogenetic signal; and (5) based on the new phylogeny and character evolution, we propose a new classification of Ophioglossaceae in which the currently circumscribed Ophioglossum is divided into four genera including three new ones: Goswamia, Haukia, and Whittieria considering their molecular, morphological, ecological, and biogeographical distinctiveness.
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Affiliation(s)
- Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China; Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar
| | - Li-Bing Zhang
- Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, Missouri 63110, U.S.AChengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China.
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Phylogeographical Analyses of a Relict Fern of Palaeotropical Flora (Vandenboschia speciosa): Distribution and Diversity Model in Relation to the Geological and Climate Events of the Late Miocene and Early Pliocene. PLANTS 2022; 11:plants11070839. [PMID: 35406819 PMCID: PMC9002575 DOI: 10.3390/plants11070839] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 02/24/2022] [Accepted: 03/08/2022] [Indexed: 11/19/2022]
Abstract
Fern phylogeographic studies have mostly focused on the influence of the Pleistocene climate on fern distributions and the prevalence of long-distance dispersal. The effect of pre-Pleistocene events on the distributions of fern species is largely unexplored. Here, we elucidate a hypothetical scenario for the evolutionary history of Vandenboschia speciosa, hypothesised to be of Tertiary palaeotropical flora with a peculiar perennial gametophyte. We sequenced 40 populations across the species range in one plastid region and two variants of the nuclear gapCp gene and conducted time-calibrated phylogenetic, phylogeographical, and species distribution modelling analyses. Vandenboschia speciosa is an allopolyploid and had a Tertiary origin. Late Miocene aridification possibly caused the long persistence in independent refugia on the Eurosiberian Atlantic and Mediterranean coasts, with the independent evolution of gene pools resulting in two evolutionary units. The Cantabrian Cornice, a major refugium, could also be a secondary contact zone during Quaternary glacial cycles. Central European populations resulted from multiple post-glacial, long-distance dispersals. Vandenboschia speciosa reached Macaronesia during the Pliocene–Pleistocene, with a phylogeographical link between the Canary Islands, Madeira, and southern Iberia, and between the Azores and northwestern Europe. Our results support the idea that the geological and climate events of the Late Miocene/Early Pliocene shifted Tertiary fern distribution patterns in Europe.
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Wu Y, Ke Y, Chan Y, Wang G, Kuo L. Integrating tissue-direct PCR into genetic identification: An upgraded molecular ecology approach to survey fern gametophytes in the field. APPLICATIONS IN PLANT SCIENCES 2022; 10:e11462. [PMID: 35495191 PMCID: PMC9039786 DOI: 10.1002/aps3.11462] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 02/11/2021] [Accepted: 12/02/2021] [Indexed: 05/14/2023]
Abstract
PREMISE The gametophytes of different fern species collected in the field can be difficult to distinguish because of their morphological similarities. Nonetheless, emerging molecular ecology techniques are starting to be used to tackle such limitations. Here, using case studies and a detailed protocol, we demonstrate a convenient methodology, tissue-direct PCR (TD-PCR), that foregoes a traditional DNA extraction and facilitates the identification of fern gametophytes, as well as enabling the elucidation of their natural distribution. METHODS Based on updated plastome information, we designed a universal primer set targeting the trnL-L-F region, which is effective across extant ferns. We used this primer set to perform TD-PCR on the case-studied populations of Taiwanese Lomariopsis gametophytes, using the generated sequences for their identification. In the case study concerning the microhabitat preference of Vaginularia junghuhnii, we designed and used a taxon-specific primer set. RESULTS Compared with approaches requiring DNA extraction, the use of TD-PCR with either universal or taxon-specific primers could save significant time, money, labor, and research materials in the genetic identification of fern gametophytes. DISCUSSION The use of modern genetic tools can aid in the identification of fern gametophytes. An updated TD-PCR strategy not only facilitates the DNA-based identification of gametophytes, but also promotes new avenues of research for investigating these plants in the field.
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Affiliation(s)
- Yi‐Hsuan Wu
- Institute of Molecular and Cellular BiologyNational Tsing Hua UniversityHsinchu CityTaiwan
| | - Ya‐Ting Ke
- Institute of Molecular and Cellular BiologyNational Tsing Hua UniversityHsinchu CityTaiwan
| | - Yuan‐Yao Chan
- College of Biological Science and TechnologyNational Yang Ming Chiao Tung UniversityHsinchu CityTaiwan
| | - Goang‐Jiun Wang
- Department of Life Science, College of Life ScienceNational Taiwan UniversityTaipei CityTaiwan
- Present address:
Goang‐Jiun Wang, Fab12 Phase7 (RD fab)Taiwan Semiconductor Manufacturing CompanyHsinchu CountyTaiwan
| | - Li‐Yaung Kuo
- Institute of Molecular and Cellular BiologyNational Tsing Hua UniversityHsinchu CityTaiwan
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Nieves KG, van Ee BW. DNA Barcoding of Adiantum (Pteridaceae: Vittarioideae) in Puerto Rico. CARIBB J SCI 2021. [DOI: 10.18475/cjos.v51i2.a13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Benjamin W. van Ee
- Department of Biology, University of Puerto Rico, Mayagüez, Mayagüez, Puerto Rico
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Ben-Menni Schuler S, Picazo-Aragonés J, Rumsey FJ, Romero-García AT, Suárez-Santiago VN. Macaronesia Acts as a Museum of Genetic Diversity of Relict Ferns: The Case of Diplazium caudatum (Athyriaceae). PLANTS 2021; 10:plants10112425. [PMID: 34834788 PMCID: PMC8623695 DOI: 10.3390/plants10112425] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 10/27/2021] [Accepted: 10/28/2021] [Indexed: 12/05/2022]
Abstract
Macaronesia has been considered a refuge region of the formerly widespread subtropical lauroid flora that lived in Southern Europe during the Tertiary. The study of relict angiosperms has shown that Macaronesian relict taxa preserve genetic variation and revealed general patterns of colonization and dispersal. However, information on the conservation of genetic diversity and range dynamics rapidly diminishes when referring to pteridophytes, despite their dominance of the herbaceous stratum in the European tropical palaeoflora. Here we aim to elucidate the pattern of genetic diversity and phylogeography of Diplazium caudatum, a hypothesized species of the Tertiary Palaeotropical flora and currently with its populations restricted across Macaronesia and disjunctly in the Sierras de Algeciras (Andalusia, southern Iberian Peninsula). We analysed 12 populations across the species range using eight microsatellite loci, sequences of a region of plastid DNA, and carry out species-distribution modelling analyses. Our dating results confirm the Tertiary origin of this species. The Macaronesian archipelagos served as a refuge during at least the Quaternary glacial cycles, where populations of D. caudatum preserved higher levels of genetic variation than mainland populations. Our data suggest the disappearance of the species in the continent and the subsequent recolonization from Macaronesia. The results of the AMOVA analysis and the indices of clonal diversity and linkage disequilibrium suggest that D. caudatum is a species in which inter-gametophytic outcrossing predominates, and that in the Andalusian populations there was a shift in mating system toward increased inbreeding and/or clonality. The model that best explains the genetic diversity distribution pattern observed in Macaronesia is, the initial and recurrent colonization between islands and archipelagos and the relatively recent diversification of restricted area lineages, probably due to the decrease of favorable habitats and competition with lineages previously established. This study extends to ferns the concept of Macaronesia archipelagos as refugia for genetic variation.
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Affiliation(s)
- Samira Ben-Menni Schuler
- Department of Botany, Faculty of Sciences, University of Granada, 18071 Granada, Spain; (S.B.-M.S.); (J.P.-A.); (A.T.R.-G.)
| | - Jesús Picazo-Aragonés
- Department of Botany, Faculty of Sciences, University of Granada, 18071 Granada, Spain; (S.B.-M.S.); (J.P.-A.); (A.T.R.-G.)
| | - Fred J. Rumsey
- Department of Life Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, UK;
| | - Ana Teresa Romero-García
- Department of Botany, Faculty of Sciences, University of Granada, 18071 Granada, Spain; (S.B.-M.S.); (J.P.-A.); (A.T.R.-G.)
| | - Víctor N. Suárez-Santiago
- Department of Botany, Faculty of Sciences, University of Granada, 18071 Granada, Spain; (S.B.-M.S.); (J.P.-A.); (A.T.R.-G.)
- Correspondence: ; Tel.: +34-958-248814
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Neither connectivity nor genetic diversity matter in the conservation of a rare fern and a moss on insular erratic boulders. CONSERV GENET 2021. [DOI: 10.1007/s10592-021-01414-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
AbstractErratic boulders provide habitat for rock-dwelling species and contribute to the biodiversity of landscapes. In the calcareous Swiss lowlands, siliceous erratic boulders are exclusive habitat islands for the regionally critically endangered fern Asplenium septentrionale, about 20 bryophyte species and numerous lichens. Focusing on island biogeographical processes, we analysed the conservation genomics of A. septentrionale and the moss Hedwigia ciliata on insular erratic boulders in the Swiss lowlands and the adjacent “mainland” in siliceous mountains. We genotyped both species using double digest restriction associated DNA sequencing (ddRAD). For the tetraploid A. septentrionale, abundant identical multilocus genotypes within populations suggested prevalent intragametophytic selfing, and six out of eight boulder populations consisting of a single multilocus genotype each indicated single spore founder events. The genetic structure of A. septentrionale mainland populations coincided with Pleistocene glacial refugia. Four genetic lineages of H. ciliata were identified, and populations consisting of a single multilocus genotype were less common than in A. septentrionale. For both taxa, multilocus genotype diversity on boulders was lower than in mainland populations. The absence of common genetic groups among boulder populations, and the absence of isolation by distance patterns, suggested colonisation of boulders through independent long-distance dispersal events. Successful boulder colonisation of A. septentrionale seems to be rare, while colonisation by H. ciliata appears to be more frequent. We conclude that pivotal principles of conservation biology, such as connectivity and genetic diversity, are of less importance for the studied cryptogams on insular erratic boulders because of long-distance dispersal, intragametophytic selfing and polyploidy.
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Fan XP, Thi Lu N, Li CX, Knapp R, He H, Zhou XM, Wan X, Zhang L, Gao XF, Zhang LB. Phylogeny, biogeography, and character evolution in the fern family Hypodematiaceae. Mol Phylogenet Evol 2021; 166:107340. [PMID: 34737000 DOI: 10.1016/j.ympev.2021.107340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 10/26/2021] [Accepted: 10/28/2021] [Indexed: 10/20/2022]
Abstract
The Old World fern genera Hypodematium and Leucostegia had long been placed in the families Dryopteridaceae and Davalliaceae, respectively, before the advent of molecular phylogenetics. Recent molecular studies confirmed the recognition of the family Hypodematiaceae composed of these two genera, but the relationships within each of these two genera have been unclear. In the present study we performed phylogenetic analyses (MP, ML, BI) based on DNA data from six plastid markers (atpB, atpB-rbcL, matK, rbcL, rps4 & rps4-trnS, and trnL & trnL-F) of 165 accessions representing 31 species in two genera of Hypodematiaceae as the ingroup and 26 accessions representing Cystopteridaceae, Didymochlaenaceae, Dryopteridaceae, Davalliaceae, Oleandraceae, and Woodsiaceae as the outgroups. Our analyses supported the monophyly of the currently defined Hypodematiaceae only including Hypodematium and Leucostegia and found that the family to be sister to the remaining eupolypods I. Our data resolved three taxa of Leucostegia into two clades. In Hypodematium, 28 taxa are resolved into seven strongly supported clades or single-accession clades. The evolution of important morphological characters are inferred in the phylogenetic context. Our dated phylogeny suggested a latest Jurassic-earliest Cretaceous origin of the family and Upper Cretaceous origin of two genera, with Hypodematiaceae originated from East Asia; extant lineages of Hypodematium originated from East Asia and subsequently into Africa, the Indian region, the Madagascar region, and Southeast Asia; and Leucostegia originated from East Asia and/or Southeast Asia.
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Affiliation(s)
- Xue-Ping Fan
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Ngan Thi Lu
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18th Hoang Quoc Viet Road, Ha Noi, Viet Nam
| | - Chun-Xiang Li
- State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Ralf Knapp
- Correspondent of the Muséum National d'Histoire naturelle (MNHN, Paris, France), Steigestrasse 78, 69412 Eberbach, Germany
| | - Hai He
- College of Life Sciences, Chongqing Normal University, Shapingba, Chongqing 401331, China
| | - Xin-Mao Zhou
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, Yunnan, China
| | - Xia Wan
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China
| | - Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China.
| | - Xin-Fen Gao
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China.
| | - Li-Bing Zhang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; Missouri Botanical Garden, 4344 Shaw Blvd, St. Louis, MO 63110, USA.
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13
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Zhang L, Fan XP, Petchsri S, Zhou L, Pollawatn R, Zhang X, Zhou XM, Thi Lu N, Knapp R, Chantanaorrapint S, Limpanasittichai P, Sun H, Gao XF, Zhang LB. Evolutionary relationships of the ancient fern lineage the adder's tongues (Ophioglossaceae) with description of Sahashia gen. nov. Cladistics 2020; 36:380-393. [PMID: 34618972 DOI: 10.1111/cla.12408] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/09/2019] [Indexed: 02/04/2023] Open
Abstract
As an ancient lineage of ferns, Ophioglossaceae are evolutionarily among the most fascinating because they have the highest chromosome count of any known organism as well as the presence of sporophores, subterranean gametophytes, eusporangiate sporangia without annuli, and endophytic fungi. Previous studies have produced conflicting results, identifyingsome lineages with unresolved relationships, and have paid much attention to the subfamily Botrychioideae. But the other species-rich subfamily, Ophioglossoideae, has remained largely understudied and only up to 12 accessions of Ophioglossoideae have been sampled. In this study, DNA sequences of seven plastid markers of 149 accessions (75 in Ophioglossoideae) representing approximately 82 species (approximately 74% of estimated species diversity sensu J. Syst. Evol., 2016, 54, 563) in the family, and two Marattiaceae and two Psilotaceae, are used to infer a phylogeny. Our major results include: (1) Ophioglossaceae are resolved as monophyletic with strong support, and so are all four subfamilies and genera sensu PPG I except Botrypus and Ophioglossum; (2) a new genus Sahashia is segregated from Botrypus so that the monophyly of Botrypus can be retained; (3) the monophyly of Ophioglossum in its current circumscription is uncertain in spite of our large character sampling; (4) there is substantial cryptic speciation in Ophioderma detected by our molecular and morphological study; (5) the recognition of Holubiella is advocated based on its morphology and its sister relationship with Sceptridium; and (6) a novel sister relationship between Botrychium and the JHS clade (Japanobotrychium + (Holubiella + Sceptridium)) is discovered.
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Affiliation(s)
- Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650201, China.,Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw, 05282, Myanmar
| | - Xue-Ping Fan
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China
| | - Sahanat Petchsri
- Department of Botany, Faculty of Liberal Arts and Science, Kasetsart University, Kampaeng Saen Campus, Nakhon Pathom, 73140, Thailand
| | - Lin Zhou
- Key Laboratory of Bio-resources and Eco-environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu, 610064, China
| | - Rossarin Pollawatn
- Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Xin Zhang
- College of Forestry, Northwest A&F University, Yangling, 712100, China
| | - Xin-Mao Zhou
- School of Ecology and Environmental Science, Yunnan University, Kunming, 650091, Yunnan, China
| | - Ngan Thi Lu
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China.,University of Chinese Academy of Sciences, Beijing, 100049, China.,Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18th Hoang Quoc Viet Road, Ha Noi, Vietnam
| | - Ralf Knapp
- Muséum national d'Histoire naturelle (MNHN, Paris, France), Steigestrasse 78, Eberbach, 69412, Germany
| | - Sahut Chantanaorrapint
- Department of Biology, Faculty of Science, Prince of Songkla University, Hat Yai, Songkhla, 90112, Thailand
| | - Ponpipat Limpanasittichai
- Department of Horticulture, Faculty of agriculture, Kasetsart University, 50 Ngam Wong Wan Rd., Lat Yao, Chatuchak, Bangkok, 10900, Thailand
| | - Hang Sun
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan, 650201, China
| | - Xin-Fen Gao
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China
| | - Li-Bing Zhang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China.,Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, MO, 63110, USA
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14
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Fujiwara T, Watano Y. Independent allopatric polyploidizations shaped the geographical structure and initial stage of reproductive isolation in an allotetraploid fern, Lepisorus nigripes (Polypodiaceae). PLoS One 2020; 15:e0233095. [PMID: 32433707 PMCID: PMC7239481 DOI: 10.1371/journal.pone.0233095] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 04/28/2020] [Indexed: 11/29/2022] Open
Abstract
Although polyploidy is pervasive and its evolutionary significance has been recognized, it remains unclear how newly formed polyploid species become established. In particular, the impact of multiple origins on genetic differentiation among populations of a polyploid species and whether lineages of independent origins have different evolutionary potentials remain open questions. We used population genetic and phylogenetic approaches to identify genetic differentiation between lineages with independent origins within an allotetraploid fern, Lepisorus nigripes. A total of 352 individuals from 51 populations were collected throughout the distribution range. To examine the genetic structure, multilocus genotyping, Bayesian population structure analysis, and neighbor-net analysis were carried out using single-copy nuclear genes. Phylogenetic trees were constructed to detect recurrent polyploid origins. Proportions of abortive spores were analysed as the measure of postzygotic reproductive isolation. Two genetically distinct lineages, the East-type and the West-type, were distributed mainly in the eastern and western parts, respectively, of the Japanese archipelago. Phylogenetic analyses indicated independent origins of these types and detected additional independent origins within each type. We also revealed limited genetic recombination between both types, even in their sympatric regions. F1 hybrids between the East- and West-types showed a reduction in fertility. It is likely that the East- and West-types formed independently in the eastern and western parts of Japan, respectively. The limited genetic recombination and reduced fertility of hybrids suggest that the two types are at an incipient stage of speciation. Two polyploid lineages with independent geographic origins could develop reproductive isolation barrier(s).
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Affiliation(s)
- Tao Fujiwara
- Center for Integrative Conservation, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla, Yunnan, China
- Department of Biology, Graduate School of Science, Chiba University, Chiba, Japan
- * E-mail:
| | - Yasuyuki Watano
- Department of Biology, Graduate School of Science, Chiba University, Chiba, Japan
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15
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Zhang L, Zhou XM, Liang ZL, Fan XP, Thi Lu N, Song MS, Knapp R, Gao XF, Sun H, Zhang LB. Phylogeny and classification of the tribe Lepisoreae (Polypodiaceae; pteridophyta) with the description of a new genus, Ellipinema gen. nov., segregated from Lepisorus. Mol Phylogenet Evol 2020; 148:106803. [PMID: 32217168 DOI: 10.1016/j.ympev.2020.106803] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2019] [Revised: 03/10/2020] [Accepted: 03/18/2020] [Indexed: 10/24/2022]
Abstract
Lepisoroid ferns (tribe Lepisoreae, Polypodiaceae) are arguably one of the most confusing fern groups in Polypodiaceae in terms of delimitation of genera largely because of their simple morphology. Previous molecular studies either had very small taxon sampling of the non-Lepisorus genera and did not well resolve the relationships among these genera, or had a relatively large sampling at species level but the critical species were missing or their relationships were not well resolved. A recent study resolved the newly sampled Lepisorus jakonensis as sister to the remaining genera in Lepisoreae excluding Paragramma, and the authors lumped all the six well recognized genera into Lepisorus. In the present study, to infer a phylogeny we used DNA sequences of five plastid markers (matK, rbcL, rbcL-atpB, rps4 &rps4-trnS, trnL &trnL-F) of 172 accessions representing ca. 44 species of non-Lepisorus genera and 54 accessions representing ca. 50 species of Lepisorus as ingroup, and 10 non-Lepisoreae accessions from the most closely related four genera (Leptochilus, Microsorum, Phymatosorus, and Goniophlebium) in Microsoroideae and one genus (Pyrrosia) in Platycerioideae. Our major results include: (1) All seven currently defined genera except Lepisorus in Lepisoreae are confirmed to be monophyletic; (2) The Lepisorus jakonensis clade is confirmed to be the second earliest diverged lineage in Lepisoreae; (3) Neolepisorus is resolved as sister to the rest in a clade containing all non-Lepisorus genera except Paragramma; (4) Lemmaphyllum is sister to a clade containing Lepidomicrosorium, Neocheiropteris, and Tricholepidium; and (5) Ellipinema gen. nov. is segregated from Lepisorus based on the phylogeny and morphology in order to stabilize the current usage of the existing six non-Lepisorus genera and species names in these genera. A key to all eight genera of Lepisoreae is provided.
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Affiliation(s)
- Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China; Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Yezin, Nay Pyi Taw 05282, Myanmar
| | - Xin-Mao Zhou
- School of Ecology and Environmental Science, Yunnan University, Kunming, Yunnan 650091, China
| | - Zhen-Long Liang
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China
| | - Xue-Ping Fan
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China
| | - Ngan Thi Lu
- Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Hanoi, Viet Nam
| | - Min-Shu Song
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Ralf Knapp
- Muséum national d'Histoire naturelle (MNHN, Paris, France), Steigestrasse 78, 69412 Eberbach, Germany
| | - Xin-Fen Gao
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China.
| | - Hang Sun
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China.
| | - Li-Bing Zhang
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, MO 63110, USA.
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16
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Exploring phylogeny of the microsoroid ferns (Polypodiaceae) based on six plastid DNA markers. Mol Phylogenet Evol 2020; 143:106665. [DOI: 10.1016/j.ympev.2019.106665] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 10/25/2019] [Accepted: 10/25/2019] [Indexed: 01/11/2023]
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17
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Zhao C, Wei R, Zhang X, Xiang Q. Backbone phylogeny of
Lepisorus
(Polypodiaceae) and a novel infrageneric classification based on the total evidence from plastid and morphological data. Cladistics 2019; 36:235-258. [DOI: 10.1111/cla.12403] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/19/2019] [Indexed: 01/20/2023] Open
Affiliation(s)
- Cun‐Feng Zhao
- State Key Laboratory of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Beijing100093China
- University of Chinese Academy of Sciences Beijing100049China
| | - Ran Wei
- State Key Laboratory of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Beijing100093China
| | - Xian‐Chun Zhang
- State Key Laboratory of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Beijing100093China
| | - Qiao‐Ping Xiang
- State Key Laboratory of Systematic and Evolutionary Botany Institute of Botany Chinese Academy of Sciences Beijing100093China
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Xu K, Zhang L, Rothfels CJ, Smith AR, Viane R, Lorence D, Wood KR, Chen C, Knapp R, Zhou L, Lu NT, Zhou X, Wei H, Fan Q, Chen S, Cicuzza D, Gao X, Liao W, Zhang L. A global plastid phylogeny of the fern genusAsplenium(Aspleniaceae). Cladistics 2019; 36:22-71. [DOI: 10.1111/cla.12384] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2019] [Indexed: 01/20/2023] Open
Affiliation(s)
- Ke‐Wang Xu
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources School of Life Sciences Sun Yat‐sen University Guangzhou
- Missouri Botanical Garden 4344 Shaw Blvd St. Louis MO 63110
| | - Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of Botany Chinese Academy of Sciences Kunming
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization Chengdu Institute of Biology Chinese Academy of Sciences P.O. Box 416 Chengdu
| | - Carl J. Rothfels
- University Herbarium and Department of Integrative Biology University of California 1001 Valley Life Sciences Building Berkeley CA 94720
| | - Alan R. Smith
- University Herbarium and Department of Integrative Biology University of California 1001 Valley Life Sciences Building Berkeley CA 94720
| | - Ronald Viane
- Department of Biology Ghent University 9000 Gent
| | - David Lorence
- National Tropical Botanical Garden 3530 Papalina Road Kalāheo HI 96741
| | - Kenneth R. Wood
- National Tropical Botanical Garden 3530 Papalina Road Kalāheo HI 96741
| | - Cheng‐Wei Chen
- Division of Silviculture Taiwan Forestry Research Institute Taipei
| | - Ralf Knapp
- Muséum national d'Histoire naturelle (MNHN, Paris, France) Steigestrasse 78 69412 Eberbach
| | - Lin Zhou
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization Chengdu Institute of Biology Chinese Academy of Sciences P.O. Box 416 Chengdu
| | - Ngan Thi Lu
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization Chengdu Institute of Biology Chinese Academy of Sciences P.O. Box 416 Chengdu
- University of Chinese Academy of Sciences Beijing
- Department of Biology Vietnam National Museum of Nature Vietnam Academy of Science and Technology 18th Hoang Quoc Viet Road Ha Noi
| | - Xin‐Mao Zhou
- Laboratory of Ecology and Evolutionary Biology State Key Laboratory for Conservation and Utilization of Bio‐Resources in Yunnan Yunnan University Kunming
| | - Hong‐Jin Wei
- Shanghai Chenshan Botanical Garden Shanghai 201602
| | - Qiang Fan
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources School of Life Sciences Sun Yat‐sen University Guangzhou
| | - Su‐Fang Chen
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources School of Life Sciences Sun Yat‐sen University Guangzhou
| | - Daniele Cicuzza
- Faculty of Science Universiti Brunei Darussalam Bandar Seri Begawan
| | - Xin‐Fen Gao
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization Chengdu Institute of Biology Chinese Academy of Sciences P.O. Box 416 Chengdu
| | - Wen‐Bo Liao
- State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources School of Life Sciences Sun Yat‐sen University Guangzhou
| | - Li‐Bing Zhang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization Chengdu Institute of Biology Chinese Academy of Sciences P.O. Box 416 Chengdu
- Missouri Botanical Garden 4344 Shaw Blvd St. Louis MO 63110
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Hanušová K, Čertner M, Urfus T, Koutecký P, Košnar J, Rothfels CJ, Jarolímová V, Ptáček J, Ekrt L. Widespread co-occurrence of multiple ploidy levels in fragile ferns (Cystopteris fragilis complex; Cystopteridaceae) probably stems from similar ecology of cytotypes, their efficient dispersal and inter-ploidy hybridization. ANNALS OF BOTANY 2019; 123:845-855. [PMID: 30541055 PMCID: PMC6526313 DOI: 10.1093/aob/mcy219] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Accepted: 11/09/2018] [Indexed: 05/13/2023]
Abstract
BACKGROUND AND AIMS Polyploidy has played an important role in the evolution of ferns. However, the dearth of data on cytotype diversity, cytotype distribution patterns and ecology in ferns is striking in comparison with angiosperms and prevents an assessment of whether cytotype coexistence and its mechanisms show similar patterns in both plant groups. Here, an attempt to fill this gap was made using the ploidy-variable and widely distributed Cystopteris fragilis complex. METHODS Flow cytometry was used to assess DNA ploidy level and monoploid genome size (Cx value) of 5518 C. fragilis individuals from 449 populations collected over most of the species' global distributional range, supplemented with data from 405 individuals representing other related species from the complex. Ecological preferences of C. fragilis tetraploids and hexaploids were compared using field-recorded parameters and database-extracted climate data. KEY RESULTS Altogether, five different ploidy levels (2x, 4x, 5x, 6x, 8x) were detected and three species exhibited intraspecific ploidy-level variation: C. fragilis, C. alpina and C. diaphana. Two predominant C. fragilis cytotypes, tetraploids and hexaploids, co-occur over most of Europe in a diffuse, mosaic-like pattern. Within this contact zone, 40 % of populations were mixed-ploidy and most also contained pentaploid hybrids. Environmental conditions had only a limited effect on the distribution of cytotypes. Differences were found in the Cx value of tetraploids and hexaploids: between-cytotype divergence was higher in uniform-ploidy than in mixed-ploidy populations. CONCLUSIONS High ploidy-level diversity and widespread cytotype coexistence in the C. fragilis complex match the well-documented patterns in some angiosperms. While ploidy coexistence in C. fragilis is not driven by environmental factors, it could be facilitated by the perennial life-form of the species, its reproductive modes and efficient wind dispersal of spores. Independent origins of hexaploids and/or inter-ploidy gene flow may be expected in mixed-ploidy populations according to Cx value comparisons.
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Affiliation(s)
- Kristýna Hanušová
- Department of Botany, Faculty of Science, Charles University, Benátská, Praha, Czech Republic
| | - Martin Čertner
- Department of Botany, Faculty of Science, Charles University, Benátská, Praha, Czech Republic
- Institute of Botany, The Czech Academy of Sciences, Zámek, Průhonice, Czech Republic
| | - Tomáš Urfus
- Department of Botany, Faculty of Science, Charles University, Benátská, Praha, Czech Republic
| | - Petr Koutecký
- Department of Botany, Faculty of Science, University of South Bohemia, Branišovská, České Budějovice, Czech Republic
| | - Jiří Košnar
- Department of Botany, Faculty of Science, University of South Bohemia, Branišovská, České Budějovice, Czech Republic
| | - Carl J Rothfels
- University Herbarium and Department of Integrative Biology, University of California, Berkeley, CA, USA
| | - Vlasta Jarolímová
- Institute of Botany, The Czech Academy of Sciences, Zámek, Průhonice, Czech Republic
| | - Jan Ptáček
- Department of Botany, Faculty of Science, Charles University, Benátská, Praha, Czech Republic
| | - Libor Ekrt
- Department of Botany, Faculty of Science, University of South Bohemia, Branišovská, České Budějovice, Czech Republic
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20
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Zhang L, Lu NT, Zhou XM, Chen DK, Knapp R, Zhou L, Guo L, Luong TT, Sun H, Gao XF, Zhang LB. A plastid phylogeny of the Old World fern genus Leptochilus (Polypodiaceae): Implications for cryptic speciation and progressive colonization from lower to higher latitudes. Mol Phylogenet Evol 2019; 134:311-322. [PMID: 30685418 DOI: 10.1016/j.ympev.2019.01.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Revised: 12/16/2018] [Accepted: 01/20/2019] [Indexed: 11/16/2022]
Abstract
The newly defined fern genus Leptochilus contains about 50 species occurring in subtropical to tropical Asia and adjacent Pacific islands. The circumscription and phylogeny of the genus have been ambiguous and its species had been included in various genera such as Colysis, Dendroglossa, Kontumia, Microsorum, and Paraleptochilus. Previous molecular studies sampled only 2-4 molecular markers and 2-16 accessions of Leptochilus. In the present study, DNA sequences of six plastid markers of 105 accessions representing ca. 40 species of Leptochilus, including types of Colysis, Kontumia, Leptochilus, and Paraleptochilus, 39 species of six non-Leptochilus genera of Microsoroideae, and one species of Pyrrosia, are used to infer a phylogeny. Our major results include: (1) Leptochilus is monophyletic and resolved as nested within the microsoroid ferns, but its relationships with other members of Microsoroideae are not well resolved; (2) Six well-supported major clades in Leptochilus are recognized, differing from one another in molecular, morphological, and geographical features; (3) Species related to L. macrophyllus representing earliest split in Leptochilus are identified; (4) The inclusion of Microsorum pteropus in Leptochilus is confirmed, whereas M. insigne is closely related to Leptochilus but not resolved as a member of the genus; (5) The species number of the genus is likely to double the most recent estimate following our study, and quite a few cryptic species should be recognized; and (6) A basal grade formed by three major clades is recovered and they are composed of species almost exclusively distributed at lower latitudes (the Malay Archipelago), whereas the shallow-level clades contain species distributed at mainly higher latitudes, suggesting that Leptochilus might have evolved at lower latitudes and progressively dispersed to and colonized higher latitudes.
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Affiliation(s)
- Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Ngan Thi Lu
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18th Hoang Quoc Viet Road, Ha Noi, Viet Nam
| | - Xin-Mao Zhou
- Laboratory of Ecology and Evolutionary Biology, State Key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan, Yunnan University, Kunming 650091, China; Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, MO 63110, USA
| | - De-Kui Chen
- College of Life Sciences, Chongqing Normal University, Shapingba, Chongqing 400047, China
| | - Ralf Knapp
- Correspondent of the Muséum national d'Histoire naturelle (MNHN, Paris, France), Steigestrasse 78, 69412 Eberbach, Germany
| | - Lin Zhou
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China
| | - Lei Guo
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Thien Tam Luong
- Department of Ecology - Evolutionary Biology, Vietnam National University Ho Chi Minh City (VNUHCM), University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam; Department of Biology, University of Turku, Turku, Finland
| | - Hang Sun
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Xin-Fen Gao
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China.
| | - Li-Bing Zhang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, MO 63110, USA.
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Lu NT, Ebihara A, He H, Zhang L, Zhou XM, Knapp R, Kamau P, Lorence D, Gao XF, Zhang LB. A plastid phylogeny of the fern genus Arachniodes (Dryopteridaceae). Mol Phylogenet Evol 2018; 133:214-235. [PMID: 30550964 DOI: 10.1016/j.ympev.2018.12.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 12/10/2018] [Accepted: 12/10/2018] [Indexed: 10/27/2022]
Abstract
Arachniodes (Dryopteridaceae) is one of the most confusing and controversial fern genera in terms of its circumscription, nomenclature, and taxonomy. Estimates of species number range from 40 to 200. Previous molecular works included only 2-17 accessions representing 2-12 species of Arachniodes and allied genera, leaving most of the Asian species remain unsampled and the infragneric relationships unclear. In this study DNA sequences of seven plastid markers of 343 accessions representing ca. 68 species of Arachniodes (275 accessions), and 64 outgroup accessions from subfam. Dryopteridoideae and subfam. Polybotryoideae were used to infer a phylogeny with maximum likelihood, Bayesian inference, and maximum parsimony approaches. Our major results include: (1) Two species currently assigned in Arachniodes (A. macrostegia and A. ochropteroides are resolved outside of the core Arachniodes making the currently defined Arachniodes polyphyletic, confirming earlier findings; (2) Lithostegia, Leptorumohra, and Phanerophlebiopsis are indeed synonyms of Arachniodes; (3) Leptorumohra is confirmed to be monophyletic, but Phanerophlebiopsis is polyphyletic; (4) The New World species of Arachniodes are confirmed to be not monophyletic with A. denticulata being nested within the Old World species, suggesting that this species is dispersed from the Old World; (5) Arachniodes s.s is resolved into 12 major clades, some of which are further divisable into recognizable subclades and groups, with A. mutica from Japan being resolved as the sister to the rest of the genus; (6) A number of systematic implications of the phylogeny have been suggested; and (7) the genus is estimated to contain ca. 83 species.
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Affiliation(s)
- Ngan Thi Lu
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18th Hoang Quoc Viet Road, Ha Noi, Viet Nam
| | - Atsushi Ebihara
- Department of Botany, National Museum of Nature and Science, Tsukuba-shi, Ibaraki 305-0005, Japan
| | - Hai He
- College of Life Sciences, Chongqing Normal University, Shapingba, Chongqing 401331, China
| | - Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Xin-Mao Zhou
- School of Ecology and Environmental Science, Yunnan University, Kunming 650091, Yunnan, China
| | - Ralf Knapp
- Correspondent of the Muséum national d'Histoire naturelle (MNHN, Paris, France), Steigestrasse 78, 69412 Eberbach, Germany
| | - Peris Kamau
- Botany Department, National Museums of Kenya, P.O. Box 40658-00100, Nairobi, Kenya
| | - David Lorence
- National Tropical Botanical Garden, 3530 Papalina Road, Kalaheo, HI 96741-9599, USA
| | - Xin-Fen Gao
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China.
| | - Li-Bing Zhang
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, MO 63110, USA.
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Wang Y, Liu K, Bi D, Zhou S, Shao J. Molecular phylogeography of East Asian Boea clarkeana (Gesneriaceae) in relation to habitat restriction. PLoS One 2018; 13:e0199780. [PMID: 29969490 PMCID: PMC6029794 DOI: 10.1371/journal.pone.0199780] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2017] [Accepted: 06/13/2018] [Indexed: 11/23/2022] Open
Abstract
Subfamily Cyrtandroideae (Gesneriaceae) comprises a broadly distributed group of rocky-slope herbs, with China being the center of its distributional range. The normal growth of many species within the family is particularly dependent on special habitats. Due to the paucity of molecular studies, very little is known regarding East Asian herb phylogeographic pattern. Here, we investigate the molecular phylogeography of Boea clarkeana Hemsl., a unique resurrection herb endemic to China, focusing on geographically restrictive effects of habitat distribution on evolutionary history. Variation in three chloroplast DNA (cpDNA) intergenic spacers (psbA-trnH, rps12-rpl20, and trnL-trnF), the ribosomal internal transcribed spacer (ITS) and simple sequence repeats in expressed sequence tags (EST-SSRs) was investigated across 18 populations to assess genetic diversity, genetic structure and historical dynamics. Genetic diversity was low within populations (cpDNA, hS = 0.03, πS×10(3) = 0.17; ITS, hS = 0.16, πS×10(3) = 0.43) but high for species (cpDNA, hT = 0.82, πT×10(3) = 3.12; ITS, hT = 0.88, πT×10(3) = 6.39); 76 alleles were detected in this highly inbred species (FIS = 0.22), with a significantly low average of 1.34 alleles per locus. No cpDNA or ITS haplotypes were shared between regions. Based on cpDNA results, the Mt. Huangshan-Tianmu and Mt. Qinling-Daba haplotypes are ancestral; these two regions represent potential refugia. Although no evidence of significant retreat-migration phenomena during glacial cycles was detected, interglacial range expansion from northern Mt. Qinling-Daba was identified (121,457 yr BP). Rapid agricultural growth caused bottlenecks in many populations, especially on Mt. Huang-Tianmu. Habitat restriction and fragmentation, weak seed and pollen dispersal abilities, and long-term isolation caused by human-induced or environmental changes are considered the main causes of extinction of several populations and low genetic diversity within populations and regions. These analyses clarify the effects of habitat restriction on B. clarkeana, representing an evolutionary reference for similar gesneriads, and enrich our understanding of the molecular phylogeography of East Asian rocky-slope herbs.
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Affiliation(s)
- Ying Wang
- College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, Wuhu, Anhui, China
| | - Kun Liu
- College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, Wuhu, Anhui, China
| | - De Bi
- College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
| | - Shoubiao Zhou
- College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
- College of Environmental Science and Engineering, Anhui Normal University, Wuhu, Anhui, China
| | - Jianwen Shao
- College of Life Sciences, Anhui Normal University, Wuhu, Anhui, China
- Anhui Provincial Key Laboratory of the Conservation and Exploitation of Biological Resources, Wuhu, Anhui, China
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A global plastid phylogeny uncovers extensive cryptic speciation in the fern genus Hymenasplenium (Aspleniaceae). Mol Phylogenet Evol 2018; 127:203-216. [PMID: 29800652 DOI: 10.1016/j.ympev.2018.05.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Revised: 05/02/2018] [Accepted: 05/17/2018] [Indexed: 10/16/2022]
Abstract
The fern genus Hymenasplenium (Aspleniaceae) is one of the two genera in the family. It is generally recognized among modern pteridologists. However, its infrageneric relationships and species diversity have been unclear and controversial. The molecular studies so far have had small taxon and character sampling. In the present study, DNA sequences of six plastid markers of 158 accessions representing ca. 40 out of ca. 50 known species of Hymenasplenium, and 16 species of Asplenium were used to infer a phylogeny with maximum likelihood, Bayesian inference, and maximum parsimony approaches. Our major results include: (1) Hymenasplenium as currently defined is strongly supported as monophyletic; (2) three major clades representing early splits in Hymenasplenium are identified, with the Old World species being strongly supported as monophyletic; it is ambiguous if the New World species are monophyletic; (3) extensive cryptic speciation in the Old World is discovered demonstrating the complexity of evolution of the genus; and (4) six strongly or moderately supported subclades in the Old World clade are revealed, differing from one another in molecular, morphological, and geographical features.
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Marques I, Loureiro J, Draper D, Castro M, Castro S. How much do we know about the frequency of hybridisation and polyploidy in the Mediterranean region? PLANT BIOLOGY (STUTTGART, GERMANY) 2018; 20 Suppl 1:21-37. [PMID: 28963818 DOI: 10.1111/plb.12639] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 09/25/2017] [Indexed: 06/07/2023]
Abstract
Natural hybridisation and polyploidy are currently recognised as drivers of biodiversity, despite early scepticism about their importance. The Mediterranean region is a biodiversity hotspot where geological and climatic events have created numerous opportunities for speciation through hybridisation and polyploidy. Still, our knowledge on the frequency of these mechanisms in the region is largely limited, despite both phenomena are frequently cited in studies of Mediterranean plants. We reviewed information available from biodiversity and cytogenetic databases to provide the first estimates of hybridisation and polyploidy frequency in the Mediterranean region. We also inspected the most comprehensive modern Mediterranean Flora (Flora iberica) to survey the frequency and taxonomic distribution of hybrids and polyploids in Iberian Peninsula. We found that <6% of Mediterranean plants were hybrids, although a higher frequency was estimated for the Iberian Peninsula (13%). Hybrids were concentrated in few families and in even fewer genera. The overall frequency of polyploidy (36.5%) was comparable with previous estimates in other regions; however our estimates increased when analysing the Iberian Peninsula (48.8%). A surprisingly high incidence of species harbouring two or more ploidy levels was also observed (21.7%). A review of the available literature also showed that the ecological factors driving emergence and establishment of new entities are still poorly studied in the Mediterranean flora, although geographic barriers seem to play a major role in polyploid complexes. Finally, this study reveals several gaps and limitations in our current knowledge about the frequency of hybridisation and polyploidy in the Mediterranean region. The obtained estimates might change in the future with the increasing number of studies; still, rather than setting the complete reality, we hope that this work triggers future studies on hybridisation and polyploidy in the Mediterranean region.
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Affiliation(s)
- I Marques
- Department of Agricultural and Environmental Sciences, High Polytechnic School of Huesca, University of Zaragoza, Huesca, Spain
| | - J Loureiro
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - D Draper
- Centro de Ecologia, Evolução e Alterações Ambientais (cE3c), Universidade de Lisboa, Lisbon, Portugal
- UBC Botanical Garden & Centre for Plant Research, and Department of Botany, University of British Columbia, Vancouver, Canada
| | - M Castro
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | - S Castro
- Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal
- Botanic Garden of the University of Coimbra, Coimbra, Portugal
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Zhang L, Zhang LB. Phylogeny and systematics of the brake fern genus Pteris (Pteridaceae) based on molecular (plastid and nuclear) and morphological evidence. Mol Phylogenet Evol 2018; 118:265-285. [DOI: 10.1016/j.ympev.2017.09.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 09/14/2017] [Accepted: 09/14/2017] [Indexed: 10/18/2022]
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26
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A global phylogeny of the fern genus Tectaria (Tectariaceae: Polypodiales) based on plastid and nuclear markers identifies major evolutionary lineages and suggests repeated evolution of free venation from anastomosing venation. Mol Phylogenet Evol 2017; 114:295-333. [DOI: 10.1016/j.ympev.2017.05.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 04/24/2017] [Accepted: 05/22/2017] [Indexed: 11/17/2022]
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27
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Zhou XM, Zhang L, Chen CW, Li CX, Huang YM, Chen DK, Lu NT, Cicuzza D, Knapp R, Luong TT, Nitta JH, Gao XF, Zhang LB. A plastid phylogeny and character evolution of the Old World fern genus Pyrrosia (Polypodiaceae) with the description of a new genus: Hovenkampia (Polypodiaceae). Mol Phylogenet Evol 2017; 114:271-294. [PMID: 28676427 DOI: 10.1016/j.ympev.2017.06.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 04/24/2017] [Accepted: 06/29/2017] [Indexed: 11/26/2022]
Abstract
The Old World fern genus Pyrrosia (Polypodiaceae) offers a rare system in ferns to study morphological evolution because almost all species of this genus are well studied for their morphology, anatomy, and spore features, and various hypotheses have been proposed in terms of the phylogeny and evolution in this genus. However, the molecular phylogeny of the genus lags behind. The monophyly of the genus has been uncertain and a modern phylogenetic study of the genus based on molecular data has been lacking. In the present study, DNA sequences of five plastid markers of 220 accessions of Polypodiaceae representing two species of Drymoglossum, 14 species of Platycerium, 50 species of Pyrrosia, and the only species of Saxiglossum (subfamily Platycerioideae), and 12 species of other Polypodiaceae representing the remaining four subfamilies are used to infer a phylogeny of the genus. Major results and conclusions of this study include: (1) Pyrrosia as currently circumscribed is paraphyletic in relation to Platycerium and can be divided into two genera: Pyrrosia s.s. and Hovenkampia (gen. nov.), with Hovenkampia and Platycerium forming a strongly supported clade sister to Pyrrosia s.s.; (2) Subfamily Platycerioideae should contain three genera only, Hovenkampia, Platycerium, and Pyrrosia s.s.; (3) Based on the molecular phylogeny, macromorphology, anatomical features, and spore morphology, four major clades in the genus are identified and three of the four are further resolved into four, four, and six subclades, respectively; (4) Three species, P. angustissima, P. foveolata, and P. mannii, not assigned to any groups by Hovenkamp (1986) because of their unusual morphology, each form monospecific clades; (5) Drymoglossum is not monophyletic and those species previously assigned to this genus are resolved in two different subclades; (6) Saxiglossum is resolved as the first lineage in the Niphopsis clade; and (7) The evolution of ten major morphological characters in the subfamily is inferred based on the phylogeny and various morphological synapomorphies for various clades and subclades are identified.
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Affiliation(s)
- Xin-Mao Zhou
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; Missouri Botanical Garden, P.O. Box 299, St. Louis, MO 63166-0299, USA
| | - Liang Zhang
- Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, Yunnan 650201, China
| | - Cheng-Wei Chen
- Division of Silviculture, Taiwan Forestry Research Institute, Taipei 10066, Taiwan
| | - Chun-Xiang Li
- State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China
| | - Yao-Moan Huang
- Division of Silviculture, Taiwan Forestry Research Institute, Taipei 10066, Taiwan
| | - De-Kui Chen
- College of Life Sciences, Chongqing Normal University, Shapingba, Chongqing 400047, China
| | - Ngan Thi Lu
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China; University of Chinese Academy of Sciences, Beijing 100049, China; Department of Biology, Vietnam National Museum of Nature, Vietnam Academy of Science and Technology, 18th Hoang Quoc Viet Road, Ha Noi, Viet Nam
| | - Daniele Cicuzza
- Faculty of Science, Universiti Brunei Darussalam, Bandar Seri Begawan, Brunei
| | - Ralf Knapp
- Correspondent of the Muséum national d'Histoire naturelle (MNHN, Paris, France), Steigestrasse 78, 69412 Eberbach, Germany
| | - Thien Tam Luong
- Department of Ecology, Evolutionary Biology, Vietnam National University Ho Chi Minh City (VNUHCM), University of Science, 227 Nguyen Van Cu Street, District 5, Ho Chi Minh City, Viet Nam; Department of Biology, University of Turku, Turku, Finland
| | - Joel H Nitta
- Department of Botany, National Museum of Nature and Science, 4-1-1 Amakubo, Tsukuba, Ibaraki 305-0005, Japan
| | - Xin-Fen Gao
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan 610041, China.
| | - Li-Bing Zhang
- Missouri Botanical Garden, P.O. Box 299, St. Louis, MO 63166-0299, USA.
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Zhang L, Zhou XM, Lu NT, Zhang LB. Phylogeny of the fern subfamily Pteridoideae (Pteridaceae; Pteridophyta), with the description of a new genus: Gastoniella. Mol Phylogenet Evol 2017; 109:59-72. [DOI: 10.1016/j.ympev.2016.12.037] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 12/16/2016] [Accepted: 12/29/2016] [Indexed: 10/20/2022]
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29
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Kuo LY, Ebihara A, Shinohara W, Rouhan G, Wood KR, Wang CN, Chiou WL. Historical biogeography of the fern genus Deparia (Athyriaceae) and its relation with polyploidy. Mol Phylogenet Evol 2016; 104:123-134. [DOI: 10.1016/j.ympev.2016.08.004] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2016] [Revised: 08/06/2016] [Accepted: 08/09/2016] [Indexed: 12/14/2022]
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de Gasper AL, Almeida TE, Dittrich VADO, Smith AR, Salino A. Molecular phylogeny of the fern family Blechnaceae (Polypodiales) with a revised genus-level treatment. Cladistics 2016; 33:429-446. [DOI: 10.1111/cla.12173] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/25/2016] [Indexed: 11/30/2022] Open
Affiliation(s)
- André L. de Gasper
- Departamento de Ciências Naturais; Universidade Regional de Blumenau; Rua Antônio da Veiga 140 Victor Konder Blumenau SC, CEP 89012-900 Brazil
- Universidade Federal de Minas Gerais; Programa de Pós-Graduação em Biologia Vegetal; PO Box 486 Belo Horizonte MG, CEP 31270-901 Brazil
| | - Thaís E. Almeida
- Universidade Federal do Oeste do Pará; Herbário HSTM; Av. Marechal Rondon, sn Santarém PA, CEP 68040-070 Brazil
| | - Vinícius A. de O. Dittrich
- Universidade Federal de Juiz de Fora; ICB; Departamento de Botânica; Av. José Lourenço Kelmer sn, Juiz de Fora MG, CEP 36036-900 Brazil
| | - Alan R. Smith
- University Herbarium; University of California, Berkeley; 1001 Valley Life Sciences Bldg. #2465 Berkeley CA 94720-2465 USA
| | - Alexandre Salino
- Universidade Federal de Minas Gerais; Programa de Pós-Graduação em Biologia Vegetal; PO Box 486 Belo Horizonte MG, CEP 31270-901 Brazil
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A well-sampled phylogenetic analysis of the polystichoid ferns (Dryopteridaceae) suggests a complex biogeographical history involving both boreotropical migrations and recent transoceanic dispersals. Mol Phylogenet Evol 2016; 98:324-36. [DOI: 10.1016/j.ympev.2016.02.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2015] [Revised: 02/15/2016] [Accepted: 02/20/2016] [Indexed: 11/18/2022]
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32
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Le Péchon T, He H, Zhang L, Zhou XM, Gao XF, Zhang LB. Using a multilocus phylogeny to test morphology-based classifications of Polystichum (Dryopteridaceae), one of the largest fern genera. BMC Evol Biol 2016; 16:55. [PMID: 26928720 PMCID: PMC4772321 DOI: 10.1186/s12862-016-0626-z] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2015] [Accepted: 02/23/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Polystichum (Dryopteridaceae) is probably the third largest fern genus in the world and contains ca. 500 species. Species of Polystichum occur on all continents except Antarctica, but its highest diversity is found in East Asia, especially Southwest China and adjacent regions. Previous studies typically had sparse taxon sampling and used limited DNA sequence data. Consequently, the majority of morphological hypotheses/classifications have never been tested using molecular data. RESULTS In this study, DNA sequences of five plastid loci of 177 accessions representing ca. 140 species of Polystichum and 13 species of the closely related genera were used to infer a phylogeny using maximum likelihood, Bayesian inference, and maximum parsimony. Our analyses show that (1) Polystichum is monophyletic, this being supported by not only molecular data but also morphological features and distribution information; (2) Polystichum is resolved into two strongly supported monophyletic clades, corresponding to the two subgenera, P. subg. Polystichum and P. subg. Haplopolystichum; (3) Accessions of P. subg. Polystichum are resolved into three major clades: clade K (P. sect. Xiphophyllum), clade L (P. sect. Polystichum), and the HYMASO superclade dominated by accessions of P. sect. Hypopeltis, P. sect. Macropolystichum, and P. sect. Sorolepidium, while those of P. subg. Haplopolystichum are resolved into eight major clades; and (4) The monophyly of the Afra clade (weakly supported), the Australasian clade (weakly supported), and the North American clade (strongly supported) is confirmed. CONCLUSIONS Of the 23 sections of Polystichum recognized in a recent classification of the genus, four (P. sect. Hypopeltis, P. sect. Neopolystichum, P. sect. Sorolepidium, P. sect. Sphaenopolystichum) are resolved as non-monophyletic, 16 are recovered as monophyletic, and three are monospecific. Of the 16 monophyletic sections, two (P. sect. Adenolepia, P. sect. Cyrtogonellum) are weakly supported and 14 are strongly supported as monophyletic. The relationships of 11 sections (five in P. subg. Haplopolystichum; six in P. subg. Polystichum) are well resolved.
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Affiliation(s)
- Timothée Le Péchon
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China.
- School of Life Sciences, University of KwaZulu-Natal, Private Bag X01 Scottsville, Pietermaritzburg, 3209, South Africa.
| | - Hai He
- School of Life Sciences, Chongqing Normal University, Shapingba, Chongqing, 400047, China.
| | - Liang Zhang
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China.
| | - Xin-Mao Zhou
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China.
- School of Life Sciences, Sichuan University, Chengdu, Sichuan, 610064, China.
| | - Xin-Fen Gao
- Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, China.
| | - Li-Bing Zhang
- Missouri Botanical Garden, P.O. Box 299, St. Louis, MO, 63166-0299, USA.
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Almeida TE, Hennequin S, Schneider H, Smith AR, Batista JAN, Ramalho AJ, Proite K, Salino A. Towards a phylogenetic generic classification of Thelypteridaceae: Additional sampling suggests alterations of neotropical taxa and further study of paleotropical genera. Mol Phylogenet Evol 2016; 94:688-700. [DOI: 10.1016/j.ympev.2015.09.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2015] [Revised: 09/04/2015] [Accepted: 09/08/2015] [Indexed: 10/23/2022]
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Sundue MA, Testo WL, Ranker TA. Morphological innovation, ecological opportunity, and the radiation of a major vascular epiphyte lineage. Evolution 2015; 69:2482-95. [DOI: 10.1111/evo.12749] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Revised: 07/19/2015] [Accepted: 07/23/2015] [Indexed: 12/14/2022]
Affiliation(s)
- Michael A. Sundue
- Department of Plant Biology; University of Vermont, Pringle Herbarium; 27 Colchester Avenue Burlington Vermont 05405
| | - Weston L. Testo
- Department of Plant Biology; University of Vermont, Pringle Herbarium; 27 Colchester Avenue Burlington Vermont 05405
| | - Tom A. Ranker
- Department of Botany; University of Hawai'i at Mānoa; 3190 Maile Way Honolulu Hawaii 96822
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Testo WL, Watkins JE, Barrington DS. Dynamics of asymmetrical hybridization in North American wood ferns: reconciling patterns of inheritance with gametophyte reproductive biology. THE NEW PHYTOLOGIST 2015; 206:785-795. [PMID: 25443156 DOI: 10.1111/nph.13213] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 11/11/2014] [Indexed: 06/04/2023]
Abstract
Hybridization is an important evolutionary force in plants, but the mechanisms underlying it have not been well studied for many groups. In particular, the drivers of non-random patterns of interspecific gene flow (asymmetrical hybridization) remain poorly understood, especially in the seed-free vascular plants. Here, we examine patterns of asymmetrical hybridization in two widespread fern hybrids from eastern North America and study the role of gametophyte ecology in the determination of hybridization bias. We characterized the maternal parentage of > 140 hybrid sporophytes by sequencing a c. 350-bp region of chloroplast DNA (cpDNA). To identify factors contributing to patterns of asymmetrical hybridization, we cultured gametophytes of the parental species and evaluated critical aspects of their reproductive biology. We found that asymmetrical hybridization was prevalent across the populations of both hybrids. Reproductive traits varied across species and suggest that selfing potential, antheridiogen responsiveness, sperm dispersal capacity and gamete size all contribute to the mediation of the direction of hybridization in this group. Our findings suggest that asymmetrical hybridization in ferns is driven by an array of reproductive traits. This study helps to sharpen and define a mechanistic understanding of patterns of hybridization in this group and demonstrates the importance of considering gametophyte biology when studying evolutionary processes in ferns.
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Affiliation(s)
- Weston L Testo
- Department of Plant Biology, University of Vermont, 111 Jeffords Hall, 63 Carrigan Drive, Burlington, VT, 05405, USA
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Stevens SM, Emery NC. Dispersal limitation and population differentiation in performance beyond a northern range limit in an asexually reproducing fern. DIVERS DISTRIB 2015. [DOI: 10.1111/ddi.12323] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Sally M. Stevens
- Department of Botany and Plant Pathology; 915 W State Street West Lafayette IN 47907-2054 USA
| | - Nancy C. Emery
- Departments of Biological Sciences and Botany and Plant Pathology; Purdue University; West Lafayette IN 47907-2054 USA
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Martínez-García LB, Richardson SJ, Tylianakis JM, Peltzer DA, Dickie IA. Host identity is a dominant driver of mycorrhizal fungal community composition during ecosystem development. THE NEW PHYTOLOGIST 2015; 205:1565-1576. [PMID: 25640965 DOI: 10.1111/nph.13226] [Citation(s) in RCA: 91] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Accepted: 11/13/2014] [Indexed: 05/26/2023]
Abstract
Little is known about the response of arbuscular mycorrhizal fungal communities to ecosystem development. We use a long-term soil chronosequence that includes ecosystem progression and retrogression to quantify the importance of host plant identity as a factor driving fungal community composition during ecosystem development. We identified arbuscular mycorrhizal fungi and plant species from 50 individual roots from each of 10 sites spanning 5-120 000 yr of ecosystem age using terminal restriction fragment length polymorphism (T-RFLP), Sanger sequencing and pyrosequencing. Arbuscular mycorrhizal fungal communities were highly structured by ecosystem age. There was strong niche differentiation, with different groups of operational taxonomic units (OTUs) being characteristic of early succession, ecosystem progression and ecosystem retrogression. Fungal alpha diversity decreased with ecosystem age, whereas beta diversity was high at early stages and lower in subsequent stages. A total of 39% of the variance in fungal communities was explained by host plant and site age, 29% of which was attributed to host and the interaction between host and site (24% and 5%, respectively). The strong response of arbuscular mycorrhizal fungi to ecosystem development appears to be largely driven by plant host identity, supporting the concept that plant and fungal communities are tightly coupled rather than independently responding to habitat.
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Affiliation(s)
- Laura B Martínez-García
- Landcare Research, Box 69040, Lincoln, 7640, New Zealand
- Algoma University, 1520 Queen Street East, Sault Ste. Marie, P6A 2G4, ON, Canada
- Centre for Ecology, Evolution and Environmental Changes (Ce3C), Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016, Lisbon, Portugal
| | | | - Jason M Tylianakis
- School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, 8140, New Zealand
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire, SL5 7PY, UK
| | | | - Ian A Dickie
- Landcare Research, Box 69040, Lincoln, 7640, New Zealand
- Bio-Protection Research Centre, Lincoln University, Box 85084, Lincoln, 7647, New Zealand
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McAllister C, Blaine R, Kron P, Bennett B, Garrett H, Kidson J, Matzenbacher B, Glotzbach A, Miller AJ. Environmental correlates of cytotype distribution in Andropogon gerardii (Poaceae). AMERICAN JOURNAL OF BOTANY 2015; 102:92-102. [PMID: 25587152 DOI: 10.3732/ajb.1400296] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
UNLABELLED • PREMISE OF THE STUDY Information about geographic distribution of cytotypes can provide insight into the origin and maintenance of autopolyploid complexes and builds a foundation for understanding cytotype differentiation and the dynamics of mixed-ploidy populations. Here, we investigate environmental correlates of the geographic distributions of 6x and 9x individuals in the ecologically dominant grass Andropogon gerardii to examine the role of climate in shaping patterns of cytotype distribution in this species.• METHODS Flow cytometry was used to estimate ploidy level in 352 individuals from 32 populations across North America. Ecological differentiation of cytotypes was tested by relating BIOCLIM variables to cytotype distribution using principal components analysis and partial linear regression.• KEY RESULTS Broad geographic sampling confirmed two primary cytotypes-6x (hexaploid) and 9x (enneaploid)-and revealed that 9x plants are more common than previously thought. Enneaploids occur frequently in the southern portions of the range, with hexaploids dominating in northern regions. Mixed-ploidy populations were common (46.9%). Principal components analysis and partial linear regression indicated that reduced summer precipitation and increased variation in diurnal and seasonal temperature range were significant predictors of the frequency of 9x plants in a population.• CONCLUSIONS Results indicate that (1) geographic distribution of 6x and 9x individuals is nonrandom; (2) environmental variables are associated with cytotype distribution in A. gerardii; and (3) nearly half of populations surveyed include both 6x and 9x individuals. The persistence of mixed-ploidy populations may reflect a combination of recurrent polyploid formation and the prevalence of clonal reproduction.
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Affiliation(s)
- Christine McAllister
- Principia College, Department of Biology and Natural Resources, Elsah, Illinois 62028 USA Saint Louis University, Department of Biology, 3507 Macelwane Hall, St. Louis, Missouri 63103 USA
| | - Russell Blaine
- Southern Illinois University, Edwardsville, 1 Hairpin Drive, Edwardsville, Illinois 62025 USA
| | - Paul Kron
- University of Guelph, Department of Integrative Biology, 50 Stone Road East, Guelph, Ontario, Canada, NIG 2W1
| | - Brent Bennett
- Principia College, Department of Biology and Natural Resources, Elsah, Illinois 62028 USA
| | - Heidi Garrett
- Principia College, Department of Biology and Natural Resources, Elsah, Illinois 62028 USA
| | - Jennifer Kidson
- Principia College, Department of Biology and Natural Resources, Elsah, Illinois 62028 USA
| | - Blanda Matzenbacher
- Principia College, Department of Biology and Natural Resources, Elsah, Illinois 62028 USA
| | - Anna Glotzbach
- Principia College, Department of Biology and Natural Resources, Elsah, Illinois 62028 USA
| | - Allison J Miller
- Saint Louis University, Department of Biology, 3507 Macelwane Hall, St. Louis, Missouri 63103 USA
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Liang Q, Hu X, Wu G, Liu J. Cryptic and repeated “allopolyploid” speciation within Allium przewalskianum Regel. (Alliaceae) from the Qinghai-Tibet Plateau. ORG DIVERS EVOL 2014. [DOI: 10.1007/s13127-014-0196-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Zhang L, Rothfels CJ, Ebihara A, Schuettpelz E, Le Péchon T, Kamau P, He H, Zhou XM, Prado J, Field A, Yatskievych G, Gao XF, Zhang LB. A global plastid phylogeny of the brake fern genusPteris(Pteridaceae) and related genera in the Pteridoideae. Cladistics 2014; 31:406-423. [DOI: 10.1111/cla.12094] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/30/2014] [Indexed: 11/27/2022] Open
Affiliation(s)
- Liang Zhang
- Chengdu Institute of Biology; Chinese Academy of Sciences; P.O. Box 416 Chengdu Sichuan 610041 China
| | - Carl J. Rothfels
- Department of Zoology; University of British Columbia; #4200-6270 University Blvd. Vancouver BC V6T 1Z4 Canada
| | - Atsushi Ebihara
- Department of Botany; National Museum of Nature and Science; Tsukuba-shi Ibaraki 305-0005 Japan
| | - Eric Schuettpelz
- Department of Botany (MRC 166); National Museum of Natural History; Smithsonian Institution; P.O. Box 37012 Washington DC 20013-7012 USA
| | - Timothée Le Péchon
- Chengdu Institute of Biology; Chinese Academy of Sciences; P.O. Box 416 Chengdu Sichuan 610041 China
| | - Peris Kamau
- Department of Botany; National Museum of Kenya; P.O. Box 45166-00100 Nairobi Kenya
| | - Hai He
- Department of Biology; Chongqing Normal University; Shapingba Chongqing 400047 China
| | - Xin-Mao Zhou
- Chengdu Institute of Biology; Chinese Academy of Sciences; P.O. Box 416 Chengdu Sichuan 610041 China
| | - Jefferson Prado
- Instituto de Botânica Herbário SP; Avenida Miguel Estéfano 3687 CEP 04301-012 São Paulo Brazil
| | - Ashley Field
- Australian Tropical Herbarium; James Cook University; Smithfield Qld 4878 Australia
- Queensland Herbarium; Department of Science, Information Technology; Innovation and the Arts; Toowong Qld 4066 Australia
| | | | - Xin-Fen Gao
- Chengdu Institute of Biology; Chinese Academy of Sciences; P.O. Box 416 Chengdu Sichuan 610041 China
| | - Li-Bing Zhang
- Missouri Botanical Garden; P.O. Box 299 St Louis MO 63166-0299 USA
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Korall P, Pryer KM. Global biogeography of scaly tree ferns (Cyatheaceae): evidence for Gondwanan vicariance and limited transoceanic dispersal. JOURNAL OF BIOGEOGRAPHY 2014; 41:402-413. [PMID: 25435648 PMCID: PMC4238398 DOI: 10.1111/jbi.12222] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
AIM Scaly tree ferns, Cyatheaceae, are a well-supported group of mostly tree-forming ferns found throughout the tropics, the subtropics and the south-temperate zone. Fossil evidence shows that the lineage originated in the Late Jurassic period. We reconstructed large-scale historical biogeographical patterns of Cyatheaceae and tested the hypothesis that some of the observed distribution patterns are in fact compatible, in time and space, with a vicariance scenario related to the break-up of Gondwana. LOCATION Tropics, subtropics and south-temperate areas of the world. METHODS The historical biogeography of Cyatheaceae was analysed in a maximum likelihood framework using Lagrange. The 78 ingroup taxa are representative of the geographical distribution of the entire family. The phylogenies that served as a basis for the analyses were obtained by Bayesian inference analyses of mainly previously published DNA sequence data using MrBayes. Lineage divergence dates were estimated in a Bayesian Markov chain Monte Carlo framework using beast. RESULTS Cyatheaceae originated in the Late Jurassic in either South America or Australasia. Following a range expansion, the ancestral distribution of the marginate-scaled clade included both these areas, whereas Sphaeropteris is reconstructed as having its origin only in Australasia. Within the marginate-scaled clade, reconstructions of early divergences are hampered by the unresolved relationships among the Alsophila, Cyathea and Gymnosphaera lineages. Nevertheless, it is clear that the occurrence of the Cyathea and Sphaeropteris lineages in South America may be related to vicariance, whereas transoceanic dispersal needs to be inferred for the range shifts seen in Alsophila and Gymnosphaera. MAIN CONCLUSIONS The evolutionary history of Cyatheaceae involves both Gondwanan vicariance scenarios as well as long-distance dispersal events. The number of transoceanic dispersals reconstructed for the family is rather few when compared with other fern lineages. We suggest that a causal relationship between reproductive mode (outcrossing) and dispersal limitations is the most plausible explanation for the pattern observed.
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Affiliation(s)
- Petra Korall
- Systematic Biology, Evolutionary Biology Centre, Uppsala UniversityNorbyvägen 18D, SE-752 36, Uppsala, Sweden
- *Correspondence: P. Korall, Systematic Biology, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, SE-752 36 Uppsala, Sweden. E-mail:
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Bruchmann I, Hobohm C. Factors That Create and Increase Endemism. ENDEMISM IN VASCULAR PLANTS 2014. [DOI: 10.1007/978-94-007-6913-7_3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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Sun D, Sun G. Untangling nucleotide diversity and evolution of the H genome in polyploid Hordeum and Elymus species based on the single copy of nuclear gene DMC1. PLoS One 2012; 7:e50369. [PMID: 23251367 PMCID: PMC3519468 DOI: 10.1371/journal.pone.0050369] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 10/24/2012] [Indexed: 01/17/2023] Open
Abstract
Numerous hybrid and polypoid species are found within the Triticeae. It has been suggested that the H subgenome of allopolyploid Elymus (wheatgrass) species originated from diploid Hordeum (barley) species, but the role of hybridization between polyploid Elymus and Hordeum has not been studied. It is not clear whether gene flow across polyploid Hordeum and Elymus species has occurred following polyploid speciation. Answering these questions will provide new insights into the formation of these polyploid species, and the potential role of gene flow among polyploid species during polyploid evolution. In order to address these questions, disrupted meiotic cDNA1 (DMC1) data from the allopolyploid StH Elymus are analyzed together with diploid and polyploid Hordeum species. Phylogenetic analysis revealed that the H copies of DMC1 sequence in some Elymus are very close to the H copies of DMC1 sequence in some polyploid Hordeum species, indicating either that the H genome in theses Elymus and polyploid Hordeum species originated from same diploid donor or that gene flow has occurred among them. Our analysis also suggested that the H genomes in Elymus species originated from limited gene pool, while H genomes in Hordeum polyploids have originated from broad gene pools. Nucleotide diversity (π) of the DMC1 sequences on H genome from polyploid species (π = 0.02083 in Elymus, π = 0.01680 in polyploid Hordeum) is higher than that in diploid Hordeum (π = 0.01488). The estimates of Tajima's D were significantly departure from the equilibrium neutral model at this locus in diploid Hordeum species (P<0.05), suggesting an excess of rare variants in diploid species which may not contribute to the origination of polyploids. Nucleotide diversity (π) of the DMC1 sequences in Elymus polyploid species (π = 0.02083) is higher than that in polyploid Hordeum (π = 0.01680), suggesting that the degree of relationships between two parents of a polyploid might be a factor affecting nucleotide diversity in allopolyploids.
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Affiliation(s)
- Dongfa Sun
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
| | - Genlou Sun
- College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, People's Republic of China
- Biology Department, Saint Mary's University, Halifax, Nova Scotia, Canada
- * E-mail:
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Dyer RJ, Savolainen V, Schneider H. Apomixis and reticulate evolution in the Asplenium monanthes fern complex. ANNALS OF BOTANY 2012; 110:1515-29. [PMID: 22984165 PMCID: PMC3503490 DOI: 10.1093/aob/mcs202] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
BACKGROUND AND AIMS Asexual reproduction is a prominent evolutionary process within land plant lineages and especially in ferns. Up to 10 % of the approx. 10 000 fern species are assumed to be obligate asexuals. In the Asplenium monanthes species complex, previous studies identified two triploid, apomictic species. The purpose of this study was to elucidate the phylogenetic relationships in the A. monanthes complex and to investigate the occurrence and evolution of apomixis within this group. METHODS DNA sequences of three plastid markers and one nuclear single copy gene were used for phylogenetic analyses. Reproductive modes were assessed by examining gametophytic and sporophyte development, while polyploidy was inferred from spore measurements. KEY RESULTS Asplenium monanthes and A. resiliens are confirmed to be apomictic. Asplenium palmeri, A. hallbergii and specimens that are morphologically similar to A. heterochroum are also found to be apomictic. Apomixis is confined to two main clades of taxa related to A. monanthes and A. resiliens, respectively, and is associated with reticulate evolution. Two apomictic A. monanthes lineages, and two putative diploid sexual progenitor species are identified in the A. monanthes clade. CONCLUSIONS Multiple origins of apomixis are inferred, in both alloploid and autoploid forms, within the A. resiliens and A. monanthes clades.
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Affiliation(s)
- Robert J. Dyer
- Department of Botany, Natural History Museum, London SW7 5BD, UK
- Imperial College London, Silwood Park Campus, Ascot, Berkshire SL5 7PY, UK
- For correspondence. Email , or
| | - Vincent Savolainen
- Imperial College London, Silwood Park Campus, Ascot, Berkshire SL5 7PY, UK
- Royal Botanic Gardens, Kew TW9 3DS, UK
| | - Harald Schneider
- Department of Botany, Natural History Museum, London SW7 5BD, UK
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- For correspondence. Email , or
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Zhang LB, Zhang L, Dong SY, Sessa EB, Gao XF, Ebihara A. Molecular circumscription and major evolutionary lineages of the fern genus Dryopteris (Dryopteridaceae). BMC Evol Biol 2012; 12:180. [PMID: 22971160 PMCID: PMC3483261 DOI: 10.1186/1471-2148-12-180] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Accepted: 09/04/2012] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The fern genus Dryopteris (Dryopteridaceae) is among the most common and species rich fern genera in temperate forests in the northern hemisphere containing 225-300 species worldwide. The circumscription of Dryopteris has been controversial and various related genera have, over the time, been included in and excluded from Dryopteris. The infrageneric phylogeny has largely remained unclear, and the placement of the majority of the supraspecific taxa of Dryopteris has never been tested using molecular data. RESULTS In this study, DNA sequences of four plastid loci (rbcL gene, rps4-trnS spacer, trnL intron, trnL-F spacer) were used to reconstruct the phylogeny of Dryopteris. A total of 122 accessions are sampled in our analysis and they represent 100 species of the expanded Dryopteris including Acrophorus, Acrorumohra, Diacalpe, Dryopsis, Nothoperanema, and Peranema. All four subgenera and 19 sections currently recognized in Dryopteris s.s. are included. One species each of Arachniodes, Leptorumohra, and Lithostegia of Dryopteridaceae are used as outgroups. Our study confirms the paraphyly of Dryopteris and provides the first strong molecular evidence on the monophyly of Acrophorus, Diacalpe, Dryopsis, Nothoperanema, and Peranema. However, all these monophyletic groups together with the paraphyletic Acrorumohra are suggested to be merged into Dryopteris based on both molecular and morphological evidence. Our analysis identified 13 well-supported monophyletic groups. Each of the 13 clades is additionally supported by morphological synapomophies and is inferred to represent a major evolutionary lineage in Dryopteris. In contrast, monophyly of the four subgenera and 15 out of 19 sections currently recognized in Dryopteris s.s is not supported by plastid data. CONCLUSIONS The genera, Acrophorus, Acrorumohra, Diacalpe, Dryopsis, Nothoperanema, and Peranema, should all be merged into Dryopteris. Most species of these genera share a short rhizome and catadromic arrangement of frond segments, unlike the sister genus of Dryopteris s.l., Arachniodes, which has anadromic arrangement of frond segments. The non-monophyly of the 19 out of the 21 supraspecific taxa (sections, subgenera) in Dryopteris strongly suggests that the current taxonomy of this genus is in need of revision. The disagreement between the previous taxonomy and molecular results in Dryopteris may be due partly to interspecific hybridization and polyplodization. More morphological studies and molecular data, especially from the nuclear genome, are needed to thoroughly elucidate the evolutionary history of Dryopteris. The 13 well-supported clades identified based on our data represent 13 major evolutionary lineages in Dryopteris that are also supported by morphological synapomophies.
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Affiliation(s)
- Li-Bing Zhang
- The ECORES Lab, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, P. R China
- Missouri Botanical Garden, P.O. Box 299, St. Louis, Missouri, 63166-0299, USA
| | - Liang Zhang
- The ECORES Lab, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, P. R China
| | - Shi-Yong Dong
- South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, P.R. China
| | - Emily B Sessa
- Botany Department, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, Wisconsin, 53706-1313, USA
| | - Xin-Fen Gao
- The ECORES Lab, Chengdu Institute of Biology, Chinese Academy of Sciences, P.O. Box 416, Chengdu, Sichuan, 610041, P. R China
| | - Atsushi Ebihara
- Department of Botany, National Museum of Nature and Science, Tsukuba-shi, Ibaraki, 305-0005, Japan
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Désamoré A, Laenen B, Stech M, Papp B, Hedenäs L, Mateo RG, Vanderpoorten A. How do temperate bryophytes face the challenge of a changing environment? Lessons from the past and predictions for the future. GLOBAL CHANGE BIOLOGY 2012; 18:2915-2924. [PMID: 24501067 DOI: 10.1111/j.1365-2486.2012.02752.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Revised: 04/21/2012] [Accepted: 05/08/2012] [Indexed: 06/03/2023]
Abstract
Bryophytes are a group of early land plants, whose specific ecophysiological and biological features, including poikilohydry, sensitivity to moderately high temperature and high dispersal ability, make them ideal candidates for investigating the impact of climate changes. Employing a combined approach of species distribution modelling (SDM) and molecular phylogeography in the temperate moss Homalothecium sericeum, we explore the significance of the Mediterranean refugia, contrasting the southern and northern refugia hypotheses, determine the extent to which recolonization of previously glaciated areas has been facilitated by the high dispersal ability of the species and make predictions on the extent to which it will be impacted by ongoing climate change. The Mediterranean areas exhibit the highest nucleotidic diversities and host a mixture of ancestral, endemic and more recently derived haplotypes. Extra-Mediterranean areas exhibit low genetic diversities and Euro-Siberian populations display a significant signal of expansion that is identified to be of Euro-Siberian origin, pointing to the northern refugia hypothesis. The SDMs predict a global net increase in range size owing to ongoing climate change, but substantial range reductions in southern areas. Presence of a significant phylogeographical signal at different spatial scales suggests, however, that dispersal limitations might constitute, as opposed to the traditional view of spore-producing plants as efficient dispersers, a constraint for migration. This casts doubts about the ability of the species to face the massive extinctions predicted in the southern areas, threatening their status of reservoir of genetic diversity.
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Bystriakova N, Peregrym M, Erkens RH, Bezsmertna O, Schneider H. Sampling bias in geographic and environmental space and its effect on the predictive power of species distribution models. SYST BIODIVERS 2012. [DOI: 10.1080/14772000.2012.705357] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Sessa EB, Zimmer EA, Givnish TJ. Unraveling reticulate evolution in North American Dryopteris (Dryopteridaceae). BMC Evol Biol 2012; 12:104. [PMID: 22748145 PMCID: PMC3509404 DOI: 10.1186/1471-2148-12-104] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2012] [Accepted: 06/14/2012] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND The thirteen species of Dryopteris in North America have long been suspected of having undergone a complicated history of reticulate evolution via allopolyploid hybridization. Various explanations for the origins of the allopolyploid taxa have been suggested, and though most lines of evidence have supported the so-called "semicristata" hypothesis, contention over the group's history has continued in several recent, conflicting studies. RESULTS Sequence data from nine plastid and two nuclear markers were collected from 73 accessions representing 35 species of Dryopteris. Sequences from each of the allopolyploids are most closely related to their progenitor species as predicted by the "semicristata" hypothesis. Allotetraploid D. campyloptera appears to be derived from a hybrid between diploid D. expansa and D. intermedia; D. celsa, from diploid D. ludoviciana x D. goldiana; and D. carthusiana and D. cristata, from diploid "D. semicristata" x D. intermedia and D. ludoviciana, respectively. Allohexaploid D. clintoniana appears to be derived from D. cristata x D.goldiana. The earliest estimated dates of formation of the allopolyploids, based on divergence time analyses, were within the last 6 Ma. We found no evidence for recurrent formation of any of the allopolyploids. The sexual allopolyploid taxa are derived from crosses between parents that show intermediate levels of genetic divergence relative to all pairs of potential progenitors. In addition, the four allotetraploids are transgressive with respect to geographic range relative to one or both of their parents (their ranges extend beyond those of the parents), suggesting that ecological advantages in novel habitats or regions may promote long-term regional coexistence of the hybrid taxa with their progenitors. CONCLUSIONS This study provides the first thorough evaluation of the North American complex of woodferns using extensive sampling of taxa and genetic markers. Phylogenies produced from each of three datasets (one plastid and two nuclear) support the "semicristata" hypothesis, including the existence of a missing diploid progenitor, and allow us to reject all competing hypotheses. This study demonstrates the value of using multiple, biparentally inherited markers to evaluate reticulate complexes, assess the frequency of recurrent polyploidization, and determine the relative importance of introgression vs. hybridization in shaping the histories of such groups.
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Affiliation(s)
- Emily B Sessa
- Department of Botany, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, WI, 53706, USA
| | - Elizabeth A Zimmer
- Department of Botany, National Museum of Natural History, MRC 166, Smithsonian Institution, Washington, DC, 20013-7012, USA
| | - Thomas J Givnish
- Department of Botany, University of Wisconsin-Madison, 430 Lincoln Drive, Madison, WI, 53706, USA
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Wang L, Wu ZQ, Bystriakova N, Ansell SW, Xiang QP, Heinrichs J, Schneider H, Zhang XC. Phylogeography of the Sino-Himalayan fern Lepisorus clathratus on "the roof of the world". PLoS One 2011; 6:e25896. [PMID: 21984953 PMCID: PMC3184171 DOI: 10.1371/journal.pone.0025896] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2011] [Accepted: 09/12/2011] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND The Qinghai-Tibetan Plateau (QTP) and its southern and southeastern mountain ranges, Himalaya-Hengduan Mountains (HHM), are one of the most extensive habitats for alpine plants in the world. How ferns occurring in QTP and HHM changed their distribution ranges in response to Quaternary climatic oscillations remains almost unknown. METHODOLOGY AND RESULTS We employed sequences of two chloroplast DNA regions, rps4-trnS and trnL-trnF, to reconstruct phylogeography of the Sino-Himalayan fern Lepisorus clathratus, occurring mainly in the QTP and HHM. Individuals of this species have either dehiscent or indehiscent sporangia with the latter evolved from the plesiomorphic dehiscent forms. Based on a range-wide sampling, we detected 27 cpDNA haplotypes that were divided into five groups by network analyses. Populations in the Hengduan Mountains possess the highest genetic diversity, while a single haplogroup is detected across the north-central region. A distinct phylogeographical subdivision was detected between the Hengduan Mountains and north-central region by AMOVA analysis. The haplogroup distribution pattern, coalescence and AMOVA analysis suggest that a long term survival area (refugia) of the species was located in the Hengduan Mountains during glaciations, with probable range expansions into north-central regions during interglacial periods. Populations with indehiscent sporangium can carry private haplotypes and are inclined to maintain genetic homogeneity. One group with indehiscent sporangia most likely survived in situ on the QTP during glaciations. CONCLUSIONS/SIGNIFICANCE This study for the first time sheds light on the response of alpine ferns in the QTP and HHM to the Quaternary climatic oscillations.
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Affiliation(s)
- Li Wang
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- Albrecht-von-Haller Institute of Plant Sciences, Georg-August University Göttingen, Göttingen, Germany
- Department of Botany, The Natural History Museum London, London, United Kingdom
- Graduate University of Chinese Academy of Sciences, Beijing, China
| | - Zhi-Qiang Wu
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
- Graduate University of Chinese Academy of Sciences, Beijing, China
| | - Nadia Bystriakova
- Department of Botany, The Natural History Museum London, London, United Kingdom
| | - Stephen W. Ansell
- Department of Botany, The Natural History Museum London, London, United Kingdom
| | - Qiao-Ping Xiang
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
| | - Jochen Heinrichs
- Albrecht-von-Haller Institute of Plant Sciences, Georg-August University Göttingen, Göttingen, Germany
| | - Harald Schneider
- Albrecht-von-Haller Institute of Plant Sciences, Georg-August University Göttingen, Göttingen, Germany
- Department of Botany, The Natural History Museum London, London, United Kingdom
| | - Xian-Chun Zhang
- State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, The Chinese Academy of Sciences, Beijing, China
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Tájek P, Bucharová A, Münzbergová Z. Limitation of distribution of two rare ferns in fragmented landscape. ACTA OECOLOGICA-INTERNATIONAL JOURNAL OF ECOLOGY 2011. [DOI: 10.1016/j.actao.2011.06.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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