The Journal of Adam Mickiewicz University

Biodiversity Research and Conservation

Biodiv.Res.Conservation ONL

Biodiversity: Research and Conservation

<abstract><title style='display:none'>Abstract</title>This monograph presents results of research on genetic diversity of 8 leafy liverwort species differing in reproductive mode. The frst 4 species in Poland are regarded as sterile and reproduce only vegetatively: <italic>Bazzania trilobata</italic>, <italic>Trichoc-olea tomentella, Lophozia hatcheri</italic>, and <italic>Mylia anomala</italic>. The next 4 are fertile, including the monoecious <italic>Lepidozia reptans </italic>and <italic>Calypogeia integristipula </italic>as well as the dioecious <italic>Mylia taylorii </italic>and <italic>Tritomaria quinquedentata</italic>. For each species, 9-10 populations were sampled. In total, 4744 gametophytes from 73 populations were examined by isozyme analysis. The level of their genetic diversity (total, <italic>H</italic>T, and within populations, HS) was high, higher than in thallose liverworts, but comparable to the genetic diversity of mosses or even some species of vascular plants. Thus the traditional opinion that the entire group of liverworts has a much lower level of genetic diversity than mosses is erroneous, as it holds true only for thallose liverworts (Metzgeriidae and Marchantiopsida). My results indicate that the effect of reproductive mode on genetic diversity in leafy liverworts is lower than in vascular plants. Sterile and fertile species of liverworts exhibited similar levels of genetic diversity. Moreover, both groups included species that had both high and low levels of <italic>H</italic>T and <italic>H</italic>S. In fertile species, monoecious and dioecious species also did not differ signifcantly in genetic diversity, but dioecious liverworts had slightly higher total diversity (<italic>H</italic>T) than monoecious species. In most of the studied leafy liverworts, the share of genetic diversity within populations in the total genetic diversity of species is greater than between populations. The percentage share of variation among populations (ΦPT) in the total genetic variation was correlated with the total genetic diversity of the species (<italic>H</italic>T). In species with high <italic>H</italic>T, differences between populations tended to be rather small. By contrast, in species with lower <italic>H</italic>T, the percentage share of differentiation among populations in the total diversity of species was much higher. My results confrm theory, based on studies by Kimura, that the main causes of genetic diversity of bryophytes are neutral somatic mutations developing in various vegetative parts of plants. The separation of branches or other plant sections with somatic mutations, followed by the growth of new shoots, can increase the level of genetic diversity. The high level of genetic diversity in sterile liverworts indicates that vegetative reproduction has a greater infuence on the level of genetic diversity than recombination. My results suggest also that mutation rates are similar in closely related species, but species with a wider ecological range exhibit higher genetic diversity because the variability of habitats can infuence the rate and type of somatic mutations. Accordingly, species inhabiting more diverse environments may be more genetically diverse. Patches of the studied species generally consisted of several genotypes (MLGs). Two types of distribution of genotypes in patches were noticed. Patches of species with low total diversity (<italic>H</italic>T), were often dominated by 1-2 genotypes, which constituted the major part of a patch. In patches of species with higher <italic>H</italic>T, there was no tendency to form patches with predomination of a single genotype. Different genotypes constituted similar proportions of a patch. In all the studied leafy liverwort species there was a high degree of repeatability of the same genotypes (MLGs) in plants from various patches within the same population or in various populations. Probably the main cause of this is the independent repeatability of the same mutations in different specimens. </abstract>

Abstract

Department of Genetics, Faculty of Biology, Adam Mickiewicz University, Umultowska 89, 61-614 Poznań

Keywords 

<article-title>Genetic Diversity of Leafy Liverwort Species (Jungermanniidae, Marchantiophyta) in Poland: Diversity of Leafy Liverwort Species with Various Reproductive Modes</article-title>

Genetic Diversity of Leafy Liverwort Species (Jungermanniidae, Marchantiophyta) in Poland: Diversity of Leafy Liverwort Species with Various Reproductive Modes

<abstract><title style='display:none'>Abstract</title>For each of 8 species of leafy liverworts, 9-10 populations were sampled in 2-3 regions of Poland. In total, 5 regions were taken into account: the Tatra National Park, Bieszczady Mts., Białowieża Forest, Pomeranian Lake District, and Suwałki Lake District. Populations of most of the studied species did not show any correlation between genetic differentiation and geographic distances. Clear differences between regional groups of populations were found in only 2 species. The other species showed a complete or partial lack of genetic differentiation between groups of populations from various geographic regions. Generally, however, mountain populations had greater genetic diversity (<italic>H</italic>T, <italic>H</italic>S) and coefficient of genetic differentiation (<italic>G</italic>ST) than lowland populations. In the Tatra National Park all the studied liverworts turned out to be more diverse than in the Bieszczady Mts. Białowieża Forest created a uniform group, standing out markedly from mountainous populations but population in this region had slightly smaller genetic diversity, then in the mountains. In the Pomeranian and Suwałki Lake Districts, genetic diversity of liverworts was significantly lower than in mountains. The decrease in diversity in these regions is a likely consequence of habitat fragmentation (causing population depletion) combined with negative effects of urban development. Habitat fragmentation results in genetic drift and inbreeding depression, which cause a decrease in genetic diversity. In the Pomeranian Lake District the level of total diversity (<italic>H</italic>T) and intra-population diversity (<italic>H</italic>S) was markedly higher than in the Suwałki Lake District. It may be linked to differences in climate, in the Suwałki Lake District climate is stronger.</abstract>

<article-title>Genetic Diversity of Leafy Liverwort Species (Jungermanniidae, Marchantiophyta) in Poland: Regional Genetic Differentiation of Leafy Liverworts</article-title>

Genetic Diversity of Leafy Liverwort Species (Jungermanniidae, Marchantiophyta) in Poland: Regional Genetic Differentiation of Leafy Liverworts

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Biodiversity Research and Conservation ist in den folgenden Services indiziert: <ul> <li> AGRICOLA (National Agricultural Library) </li> <li> AGRO </li> <li> Arianta </li> <li> Baidu Scholar </li> <li> CABI (over 50 subsections) </li> <li> CNKI Scholar (China National Knowledge Infrastructure) </li> <li> CNPIEC - cnpLINKer </li> <li> Dimensions </li> <li> EBSCO </li> <li> ExLibris </li> <li> Genamics JournalSeek </li> <li> Google Scholar </li> <li> Japan Science and Technology Agency (JST) </li> <li> J-Gate </li> <li> JournalGuide </li> <li> JournalTOCs </li> <li> KESLI-NDSL (Korean National Discovery for Science Leaders) </li> <li> MyScienceWork </li> <li> Naver Academic </li> <li> Naviga (Softweco) </li> <li> POL-index </li> <li> ProQuest </li> <li> Publons </li> <li> QOAM (Quality Open Access Market) </li> <li> ReadCube </li> <li> Semantic Scholar </li> <li> Sherpa/RoMEO </li> <li> TDNet </li> <li> Ulrich's Periodicals Directory/ulrichsweb </li> <li> WanFang Data </li> <li> WorldCat (OCLC) </li> <li> X-MOL </li> </ul>

Editor-in-Chief Bogdan Jackowiak, Adam Mickiewicz University, Poznań, Poland Associate Editor Zbigniew Celka, Adam Mickiewicz University, Poznań, Poland Editorial Secretary Elżbieta Obarska, Adam Mickiewicz University, Poznań, Poland Section Editors Dariusz L. Szlachetko, University of Gdańsk, Gdańsk, Poland Barbara Tokarska-Guzik, Silesian University, Katowice, Poland Maria Wojterska, Adam Mickiewicz University, Poznań, Poland Adam Zając, Jagiellonian University, Cracow, Poland Waldemar Żukowski, Adam Mickiewicz University, Poznań, Poland Biostatistics Zygmunt Kaczmarek, Polish Academy of Sciences, Institute of Plant Genetics, Poznań, Poland Editorial Board Adam Boratyński, Polish Academy of Sciences, Institute of Dendrology, Kórnik, Poland Yakiv Petrovich Didukh, National Academy of Science of Ukraine, Kyiv, Ukraine Jerzy Fabiszewski, University of Life Sciences, Wrocław, Poland Viera Feráková, Institute of Botany, Slovak Academy of Sciences Bratislava, Slovakia Ludwik Frey, Polish Academy of Sciences, Institute of Botany, Cracow, Poland Georg Grabherr, University of Vienna, Austria Czesław Hołdyński, University of Warmia and Mazury, Olsztyn, Poland Ingo Kowarik, Technical University Berlin, Germany Hans Walter Lack, Botanic Garden and Botanical Museum Berlin-Dahlem, Free University of Berlin, Germany Maria Ławrynowicz, Łódź University, Łódź, Poland Zbigniew Mirek, Polish Academy of Sciences, Institute of Botany, Cracow, Poland Sergei L. Mosyakin, National Academy of Science of Ukraine, Kyiv, Ukraine Romuald Olaczek, Łódź University, Łódź, Poland Edward G. H. Oliver, Department of Botany and Zoology, University of Stellenbosch, Republic of South Africa Peter Schönfelder, University of Regensburg, Germany Barbara Sudnik-Wójcikowska, Warsaw University, Warsaw, Poland Józef Szmeja, University of Gdańsk, Gdańsk, Poland Nikolai Nikolaievich Tzvelev, Russian Academy of Science, Saint Petersburg, Russia Language Editors Sylwia Ufnalska, member of the European Association of Science Editors and EASE Council, Poland Elżbieta Obarska, Adam Mickiewicz University in Poznań, Department of Plant Taxonomy, Poland David Orwin, University of Bedfordshire, England Anna Binczarowska, Poznań University of Life Sciences, Language Department, Poland Zbigniew Śniatała, Poznań, Poland Technical Editor Zbigniew Celka, Adam Mickiewicz University in Poznań, Department of Plant Taxonomy, Poland Contact Biodiversity: Research and Conservation Department of Plant Taxonomy, Adam Mickiewicz University in Poznań, Umultowska 89, 61-614 Poznań, Poland Fax. (+4861) 82956 36 Phone (+4861) 82956 96/89 e-mail: <A href="mailto:biodiv@amu.edu.pl">biodiv@amu.edu.pl</A> homepage: <A href="http://www.brc.amu.edu.pl/">www.brc.amu.edu.pl</A> Publisher De Gruyter Poland Bogumiła Zuga 32A Str. 01-811 Warsaw, Poland T: +48 22 701 50 15

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Volumen 27 (2012): Edición 2012 (September 2012)

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