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Developmental Control and Plasticity of Fruit and Seed Dimorphism in Aethionema arabicum

T. Lenser, K. Graeber, ÖS. Cevik, N. Adigüzel, AA. Dönmez, C. Grosche, M. Kettermann, S. Mayland-Quellhorst, Z. Mérai, S. Mohammadin, TP. Nguyen, F. Rümpler, C. Schulze, K. Sperber, T. Steinbrecher, N. Wiegand, M. Strnad, OM. Scheid, SA. Rensing,...

. 2016 ; 172 (3) : 1691-1707. [pub] 20161004

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články

Perzistentní odkaz   https://www.medvik.cz/link/bmc18016956

Understanding how plants cope with changing habitats is a timely and important topic in plant research. Phenotypic plasticity describes the capability of a genotype to produce different phenotypes when exposed to different environmental conditions. In contrast, the constant production of a set of distinct phenotypes by one genotype mediates bet hedging, a strategy that reduces the temporal variance in fitness at the expense of a lowered arithmetic mean fitness. Both phenomena are thought to represent important adaptation strategies to unstable environments. However, little is known about the underlying mechanisms of these phenomena, partly due to the lack of suitable model systems. We used phylogenetic and comparative analyses of fruit and seed anatomy, biomechanics, physiology, and environmental responses to study fruit and seed heteromorphism, a typical morphological basis of a bet-hedging strategy of plants, in the annual Brassicaceae species Aethionema arabicum Our results indicate that heteromorphism evolved twice within the Aethionemeae, including once for the monophyletic annual Aethionema clade. The dimorphism of Ae. arabicum is associated with several anatomic, biomechanical, gene expression, and physiological differences between the fruit and seed morphs. However, fruit ratios and numbers change in response to different environmental conditions. Therefore, the life-history strategy of Ae. arabicum appears to be a blend of bet hedging and plasticity. Together with the available genomic resources, our results pave the way to use this species in future studies intended to unravel the molecular control of heteromorphism and plasticity.

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$a Lenser, Teresa $u Department of Genetics, Friedrich Schiller University, 07743 Jena, Germany (T.L., F.R., G.T.).
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$a Understanding how plants cope with changing habitats is a timely and important topic in plant research. Phenotypic plasticity describes the capability of a genotype to produce different phenotypes when exposed to different environmental conditions. In contrast, the constant production of a set of distinct phenotypes by one genotype mediates bet hedging, a strategy that reduces the temporal variance in fitness at the expense of a lowered arithmetic mean fitness. Both phenomena are thought to represent important adaptation strategies to unstable environments. However, little is known about the underlying mechanisms of these phenomena, partly due to the lack of suitable model systems. We used phylogenetic and comparative analyses of fruit and seed anatomy, biomechanics, physiology, and environmental responses to study fruit and seed heteromorphism, a typical morphological basis of a bet-hedging strategy of plants, in the annual Brassicaceae species Aethionema arabicum Our results indicate that heteromorphism evolved twice within the Aethionemeae, including once for the monophyletic annual Aethionema clade. The dimorphism of Ae. arabicum is associated with several anatomic, biomechanical, gene expression, and physiological differences between the fruit and seed morphs. However, fruit ratios and numbers change in response to different environmental conditions. Therefore, the life-history strategy of Ae. arabicum appears to be a blend of bet hedging and plasticity. Together with the available genomic resources, our results pave the way to use this species in future studies intended to unravel the molecular control of heteromorphism and plasticity.
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$a Graeber, Kai $u School of Biological Sciences, Plant Molecular Science and Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom (K.G., C.S., T.S., G.L.-M.).
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$a Cevik, Özge Selin $u Department of Physiology, Faculty of Medicine, Mersin University, 33343 Mersin, Turkey (Ö.S.C.). Department of Physiology, Faculty of Medicine, Mersin University, 33343 Mersin, Turkey (Ö.S.C.); gerhard.leubner@rhul.ac.uk.
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$a Adigüzel, Nezaket $u Department of Biology, Science Faculty, Gazi University, 06500 Teknikokullar, Ankara, Turkey (N.A.). Department of Biology, Science Faculty, Gazi University, 06500 Teknikokullar, Ankara, Turkey (N.A.); gerhard.leubner@rhul.ac.uk.
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$a Dönmez, Ali A $u Department of Botany, Faculty of Science, Hacettepe University, 06800 Beytepe, Ankara, Turkey (A.A.D.). Department of Botany, Faculty of Science, Hacettepe University, 06800 Beytepe, Ankara, Turkey (A.A.D.); gerhard.leubner@rhul.ac.uk.
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$a Grosche, Christopher $u Plant Cell Biology, Faculty of Biology, University of Marburg, 35043 Marburg, Germany (C.G., S.A.R.). Plant Cell Biology, Faculty of Biology, University of Marburg, 35043 Marburg, Germany (C.G., S.A.R.); gerhard.leubner@rhul.ac.uk.
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$a Kettermann, Marcel $u Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.). Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.); gerhard.leubner@rhul.ac.uk.
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$a Mayland-Quellhorst, Sara $u Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.). Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.); gerhard.leubner@rhul.ac.uk.
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$a Mérai, Zsuzsanna $u Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna Biocenter, 1030 Vienna, Austria (Z.M., O.M.S.). Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna Biocenter, 1030 Vienna, Austria (Z.M., O.M.S.); gerhard.leubner@rhul.ac.uk.
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$a Mohammadin, Setareh $u Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.). Biosystematics Group, Wageningen University, 6708 PB Wageningen, The Netherlands (S.M., T.-P.N., M.E.S.); and. Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.); gerhard.leubner@rhul.ac.uk. Biosystematics Group, Wageningen University, 6708 PB Wageningen, The Netherlands (S.M., T.-P.N., M.E.S.); and gerhard.leubner@rhul.ac.uk.
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$a Nguyen, Thu-Phuong $u Biosystematics Group, Wageningen University, 6708 PB Wageningen, The Netherlands (S.M., T.-P.N., M.E.S.); and. Biosystematics Group, Wageningen University, 6708 PB Wageningen, The Netherlands (S.M., T.-P.N., M.E.S.); and gerhard.leubner@rhul.ac.uk.
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$a Rümpler, Florian $u Department of Genetics, Friedrich Schiller University, 07743 Jena, Germany (T.L., F.R., G.T.). Department of Genetics, Friedrich Schiller University, 07743 Jena, Germany (T.L., F.R., G.T.); gerhard.leubner@rhul.ac.uk.
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$a Schulze, Christina $u School of Biological Sciences, Plant Molecular Science and Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom (K.G., C.S., T.S., G.L.-M.). School of Biological Sciences, Plant Molecular Science and Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom (K.G., C.S., T.S., G.L.-M.); gerhard.leubner@rhul.ac.uk.
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$a Sperber, Katja $u Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.). Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.); gerhard.leubner@rhul.ac.uk.
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$a Steinbrecher, Tina $u School of Biological Sciences, Plant Molecular Science and Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom (K.G., C.S., T.S., G.L.-M.). School of Biological Sciences, Plant Molecular Science and Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom (K.G., C.S., T.S., G.L.-M.); gerhard.leubner@rhul.ac.uk.
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$a Wiegand, Nils $u Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.). Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.); gerhard.leubner@rhul.ac.uk.
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$a Strnad, Miroslav $u Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 78371 Olomouc, Czech Republic (M.S., G.L.-M.). Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 78371 Olomouc, Czech Republic (M.S., G.L.-M.) gerhard.leubner@rhul.ac.uk.
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$a Scheid, Ortrun Mittelsten $u Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna Biocenter, 1030 Vienna, Austria (Z.M., O.M.S.). Gregor Mendel Institute of Molecular Plant Biology, Austrian Academy of Sciences, Vienna Biocenter, 1030 Vienna, Austria (Z.M., O.M.S.); gerhard.leubner@rhul.ac.uk.
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$a Rensing, Stefan A $u Plant Cell Biology, Faculty of Biology, University of Marburg, 35043 Marburg, Germany (C.G., S.A.R.). Plant Cell Biology, Faculty of Biology, University of Marburg, 35043 Marburg, Germany (C.G., S.A.R.); gerhard.leubner@rhul.ac.uk.
700    1_
$a Schranz, Michael Eric $u Biosystematics Group, Wageningen University, 6708 PB Wageningen, The Netherlands (S.M., T.-P.N., M.E.S.); and. Biosystematics Group, Wageningen University, 6708 PB Wageningen, The Netherlands (S.M., T.-P.N., M.E.S.); and gerhard.leubner@rhul.ac.uk.
700    1_
$a Theißen, Günter $u Department of Genetics, Friedrich Schiller University, 07743 Jena, Germany (T.L., F.R., G.T.). Department of Genetics, Friedrich Schiller University, 07743 Jena, Germany (T.L., F.R., G.T.); gerhard.leubner@rhul.ac.uk.
700    1_
$a Mummenhoff, Klaus $u Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.). Department of Biology, Botany, University of Osnabrück, 49076 Osnabrueck, Germany (M.K., S.M.-Q., K.S., N.W., K.M.); gerhard.leubner@rhul.ac.uk.
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$a Leubner-Metzger, Gerhard $u School of Biological Sciences, Plant Molecular Science and Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom (K.G., C.S., T.S., G.L.-M.). Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 78371 Olomouc, Czech Republic (M.S., G.L.-M.). School of Biological Sciences, Plant Molecular Science and Centre for Systems and Synthetic Biology, Royal Holloway University of London, Egham, Surrey TW20 0EX, United Kingdom (K.G., C.S., T.S., G.L.-M.); gerhard.leubner@rhul.ac.uk. Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Palacký University and Institute of Experimental Botany, Academy of Sciences of the Czech Republic, 78371 Olomouc, Czech Republic (M.S., G.L.-M.) gerhard.leubner@rhul.ac.uk.
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