PoplarV1, Main, Exploration, bibRecord, 001933

Cytokinin and Auxin Display Distinct but Interconnected Distribution and Signaling Profiles to Stimulate Cambial Activity.

Identifieur interne : 001933 ( Main/Exploration ); précédent : 001932; suivant : 001934

Cytokinin and Auxin Display Distinct but Interconnected Distribution and Signaling Profiles to Stimulate Cambial Activity.

Auteurs : Juha Immanen [Finlande] ; Kaisa Nieminen [Finlande] ; Olli-Pekka Smolander [Finlande] ; Mikiko Kojima [Japon] ; Juan Alonso Serra [Finlande] ; Patrik Koskinen [Finlande] ; Jing Zhang [Royaume-Uni] ; Annakaisa Elo [Finlande] ; Ari Pekka M Hönen [Finlande] ; Nathaniel Street [Suède] ; Rishikesh P. Bhalerao [Arabie saoudite] ; Lars Paulin [Finlande] ; Petri Auvinen [Finlande] ; Hitoshi Sakakibara [Japon] ; Yk Helariutta [Royaume-Uni]

Source :

Current biology : CB [ 1879-0445 ] ; 2016.

RBID : pubmed:27426519

Descripteurs français

KwdFr :
- Acides indolacétiques (métabolisme), Cambium (croissance et développement), Cytokinine (métabolisme), Facteur de croissance végétal (métabolisme), Génome végétal (MeSH), Populus (croissance et développement), Populus (génétique), Populus (physiologie), Transcriptome (MeSH), Transduction du signal (MeSH), Végétaux génétiquement modifiés (croissance et développement), Végétaux génétiquement modifiés (génétique), Végétaux génétiquement modifiés (physiologie).
MESH :
- croissance et développement : Cambium, Populus, Végétaux génétiquement modifiés.
- génétique : Populus, Végétaux génétiquement modifiés.
- métabolisme : Acides indolacétiques, Cytokinine, Facteur de croissance végétal.
- physiologie : Populus, Végétaux génétiquement modifiés.
- Génome végétal, Transcriptome, Transduction du signal.

English descriptors

KwdEn :
- Cambium (growth & development), Cytokinins (metabolism), Genome, Plant (MeSH), Indoleacetic Acids (metabolism), Plant Growth Regulators (metabolism), Plants, Genetically Modified (genetics), Plants, Genetically Modified (growth & development), Plants, Genetically Modified (physiology), Populus (genetics), Populus (growth & development), Populus (physiology), Signal Transduction (MeSH), Transcriptome (MeSH).
MESH :
- chemical , metabolism : Cytokinins, Indoleacetic Acids, Plant Growth Regulators.
- genetics : Plants, Genetically Modified, Populus.
- growth & development : Cambium, Plants, Genetically Modified, Populus.
- physiology : Plants, Genetically Modified, Populus.
- Genome, Plant, Signal Transduction, Transcriptome.

Abstract

Despite the crucial roles of phytohormones in plant development, comparison of the exact distribution profiles of different hormones within plant meristems has thus far remained scarce. Vascular cambium, a wide lateral meristem with an extensive developmental zonation, provides an optimal system for hormonal and genetic profiling. By taking advantage of this spatial resolution, we show here that two major phytohormones, cytokinin and auxin, display different yet partially overlapping distribution profiles across the cambium. In contrast to auxin, which has its highest concentration in the actively dividing cambial cells, cytokinins peak in the developing phloem tissue of a Populus trichocarpa stem. Gene expression patterns of cytokinin biosynthetic and signaling genes coincided with this hormonal gradient. To explore the functional significance of cytokinin signaling for cambial development, we engineered transgenic Populus tremula × tremuloides trees with an elevated cytokinin biosynthesis level. Confirming that cytokinins function as major regulators of cambial activity, these trees displayed stimulated cambial cell division activity resulting in dramatically increased (up to 80% in dry weight) production of the lignocellulosic trunk biomass. To connect the increased growth to hormonal status, we analyzed the hormone distribution and genome-wide gene expression profiles in unprecedentedly high resolution across the cambial zone. Interestingly, in addition to showing an elevated cambial cytokinin content and signaling level, the cambial auxin concentration and auxin-responsive gene expression were also increased in the transgenic trees. Our results indicate that cytokinin signaling specifies meristematic activity through a graded distribution that influences the amplitude of the cambial auxin gradient.

DOI: 10.1016/j.cub.2016.05.053
PubMed: 27426519

Affiliations:

Links toward previous steps (curation, corpus...)

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Le document en format XML

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<author><name sortKey="Sakakibara, Hitoshi" sort="Sakakibara, Hitoshi" uniqKey="Sakakibara H" first="Hitoshi" last="Sakakibara">Hitoshi Sakakibara</name>
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</affiliation>
</author>
<author><name sortKey="Helariutta, Yk" sort="Helariutta, Yk" uniqKey="Helariutta Y" first="Yk" last="Helariutta">Yk Helariutta</name>
<affiliation wicri:level="4"><nlm:affiliation>Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland; Department of Biosciences, University of Helsinki, 00014 Helsinki, Finland; Sainsbury Laboratory, Cambridge University, Bateman Street, Cambridge CB2 1LR, UK. Electronic address: yrjo.helariutta@slcu.cam.ac.uk.</nlm:affiliation>
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<series><title level="j">Current biology : CB</title>
<idno type="eISSN">1879-0445</idno>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Cambium (growth & development)</term>
<term>Cytokinins (metabolism)</term>
<term>Genome, Plant (MeSH)</term>
<term>Indoleacetic Acids (metabolism)</term>
<term>Plant Growth Regulators (metabolism)</term>
<term>Plants, Genetically Modified (genetics)</term>
<term>Plants, Genetically Modified (growth & development)</term>
<term>Plants, Genetically Modified (physiology)</term>
<term>Populus (genetics)</term>
<term>Populus (growth & development)</term>
<term>Populus (physiology)</term>
<term>Signal Transduction (MeSH)</term>
<term>Transcriptome (MeSH)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Acides indolacétiques (métabolisme)</term>
<term>Cambium (croissance et développement)</term>
<term>Cytokinine (métabolisme)</term>
<term>Facteur de croissance végétal (métabolisme)</term>
<term>Génome végétal (MeSH)</term>
<term>Populus (croissance et développement)</term>
<term>Populus (génétique)</term>
<term>Populus (physiologie)</term>
<term>Transcriptome (MeSH)</term>
<term>Transduction du signal (MeSH)</term>
<term>Végétaux génétiquement modifiés (croissance et développement)</term>
<term>Végétaux génétiquement modifiés (génétique)</term>
<term>Végétaux génétiquement modifiés (physiologie)</term>
</keywords>
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<term>Indoleacetic Acids</term>
<term>Plant Growth Regulators</term>
</keywords>
<keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Cambium</term>
<term>Populus</term>
<term>Végétaux génétiquement modifiés</term>
</keywords>
<keywords scheme="MESH" qualifier="genetics" xml:lang="en"><term>Plants, Genetically Modified</term>
<term>Populus</term>
</keywords>
<keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Cambium</term>
<term>Plants, Genetically Modified</term>
<term>Populus</term>
</keywords>
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<term>Végétaux génétiquement modifiés</term>
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<term>Cytokinine</term>
<term>Facteur de croissance végétal</term>
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<term>Végétaux génétiquement modifiés</term>
</keywords>
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<term>Populus</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Genome, Plant</term>
<term>Signal Transduction</term>
<term>Transcriptome</term>
</keywords>
<keywords scheme="MESH" xml:lang="fr"><term>Génome végétal</term>
<term>Transcriptome</term>
<term>Transduction du signal</term>
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<front><div type="abstract" xml:lang="en">Despite the crucial roles of phytohormones in plant development, comparison of the exact distribution profiles of different hormones within plant meristems has thus far remained scarce. Vascular cambium, a wide lateral meristem with an extensive developmental zonation, provides an optimal system for hormonal and genetic profiling. By taking advantage of this spatial resolution, we show here that two major phytohormones, cytokinin and auxin, display different yet partially overlapping distribution profiles across the cambium. In contrast to auxin, which has its highest concentration in the actively dividing cambial cells, cytokinins peak in the developing phloem tissue of a Populus trichocarpa stem. Gene expression patterns of cytokinin biosynthetic and signaling genes coincided with this hormonal gradient. To explore the functional significance of cytokinin signaling for cambial development, we engineered transgenic Populus tremula × tremuloides trees with an elevated cytokinin biosynthesis level. Confirming that cytokinins function as major regulators of cambial activity, these trees displayed stimulated cambial cell division activity resulting in dramatically increased (up to 80% in dry weight) production of the lignocellulosic trunk biomass. To connect the increased growth to hormonal status, we analyzed the hormone distribution and genome-wide gene expression profiles in unprecedentedly high resolution across the cambial zone. Interestingly, in addition to showing an elevated cambial cytokinin content and signaling level, the cambial auxin concentration and auxin-responsive gene expression were also increased in the transgenic trees. Our results indicate that cytokinin signaling specifies meristematic activity through a graded distribution that influences the amplitude of the cambial auxin gradient.</div>
</front>
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<DateCompleted><Year>2017</Year>
<Month>12</Month>
<Day>26</Day>
</DateCompleted>
<DateRevised><Year>2019</Year>
<Month>02</Month>
<Day>06</Day>
</DateRevised>
<Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1879-0445</ISSN>
<JournalIssue CitedMedium="Internet"><Volume>26</Volume>
<Issue>15</Issue>
<PubDate><Year>2016</Year>
<Month>08</Month>
<Day>08</Day>
</PubDate>
</JournalIssue>
<Title>Current biology : CB</Title>
<ISOAbbreviation>Curr Biol</ISOAbbreviation>
</Journal>
<ArticleTitle>Cytokinin and Auxin Display Distinct but Interconnected Distribution and Signaling Profiles to Stimulate Cambial Activity.</ArticleTitle>
<Pagination><MedlinePgn>1990-1997</MedlinePgn>
</Pagination>
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<ELocationID EIdType="doi" ValidYN="Y">10.1016/j.cub.2016.05.053</ELocationID>
<Abstract><AbstractText>Despite the crucial roles of phytohormones in plant development, comparison of the exact distribution profiles of different hormones within plant meristems has thus far remained scarce. Vascular cambium, a wide lateral meristem with an extensive developmental zonation, provides an optimal system for hormonal and genetic profiling. By taking advantage of this spatial resolution, we show here that two major phytohormones, cytokinin and auxin, display different yet partially overlapping distribution profiles across the cambium. In contrast to auxin, which has its highest concentration in the actively dividing cambial cells, cytokinins peak in the developing phloem tissue of a Populus trichocarpa stem. Gene expression patterns of cytokinin biosynthetic and signaling genes coincided with this hormonal gradient. To explore the functional significance of cytokinin signaling for cambial development, we engineered transgenic Populus tremula × tremuloides trees with an elevated cytokinin biosynthesis level. Confirming that cytokinins function as major regulators of cambial activity, these trees displayed stimulated cambial cell division activity resulting in dramatically increased (up to 80% in dry weight) production of the lignocellulosic trunk biomass. To connect the increased growth to hormonal status, we analyzed the hormone distribution and genome-wide gene expression profiles in unprecedentedly high resolution across the cambial zone. Interestingly, in addition to showing an elevated cambial cytokinin content and signaling level, the cambial auxin concentration and auxin-responsive gene expression were also increased in the transgenic trees. Our results indicate that cytokinin signaling specifies meristematic activity through a graded distribution that influences the amplitude of the cambial auxin gradient.</AbstractText>
<CopyrightInformation>Copyright © 2016 Elsevier Ltd. All rights reserved.</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Immanen</LastName>
<ForeName>Juha</ForeName>
<Initials>J</Initials>
<AffiliationInfo><Affiliation>Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland; Department of Biosciences, University of Helsinki, 00014 Helsinki, Finland.</Affiliation>
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</Author>
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<ForeName>Olli-Pekka</ForeName>
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<AffiliationInfo><Affiliation>Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland.</Affiliation>
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</Author>
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<ForeName>Mikiko</ForeName>
<Initials>M</Initials>
<AffiliationInfo><Affiliation>RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro, Tsurumi, Yokohama 230-0045, Japan.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Alonso Serra</LastName>
<ForeName>Juan</ForeName>
<Initials>J</Initials>
<AffiliationInfo><Affiliation>Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland; Department of Biosciences, University of Helsinki, 00014 Helsinki, Finland.</Affiliation>
</AffiliationInfo>
</Author>
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<ForeName>Patrik</ForeName>
<Initials>P</Initials>
<AffiliationInfo><Affiliation>Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland.</Affiliation>
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</Author>
<Author ValidYN="Y"><LastName>Zhang</LastName>
<ForeName>Jing</ForeName>
<Initials>J</Initials>
<AffiliationInfo><Affiliation>Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland; Department of Biosciences, University of Helsinki, 00014 Helsinki, Finland; Sainsbury Laboratory, Cambridge University, Bateman Street, Cambridge CB2 1LR, UK.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Elo</LastName>
<ForeName>Annakaisa</ForeName>
<Initials>A</Initials>
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<Initials>AP</Initials>
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</AffiliationInfo>
</Author>
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<ForeName>Nathaniel</ForeName>
<Initials>N</Initials>
<AffiliationInfo><Affiliation>Umeå Plant Science Center and Department of Forest Genetics and Plant Physiology, SLU, Umeå 901 87, Sweden.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Bhalerao</LastName>
<ForeName>Rishikesh P</ForeName>
<Initials>RP</Initials>
<AffiliationInfo><Affiliation>Umeå Plant Science Center and Department of Forest Genetics and Plant Physiology, SLU, Umeå 901 87, Sweden; Department of Biology, King Saud University, Riyadh 11451, Saudi Arabia.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Paulin</LastName>
<ForeName>Lars</ForeName>
<Initials>L</Initials>
<AffiliationInfo><Affiliation>Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland.</Affiliation>
</AffiliationInfo>
</Author>
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<ForeName>Petri</ForeName>
<Initials>P</Initials>
<AffiliationInfo><Affiliation>Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland.</Affiliation>
</AffiliationInfo>
</Author>
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<ForeName>Hitoshi</ForeName>
<Initials>H</Initials>
<AffiliationInfo><Affiliation>RIKEN Center for Sustainable Resource Science, 1-7-22, Suehiro, Tsurumi, Yokohama 230-0045, Japan.</Affiliation>
</AffiliationInfo>
</Author>
<Author ValidYN="Y"><LastName>Helariutta</LastName>
<ForeName>Ykä</ForeName>
<Initials>Y</Initials>
<AffiliationInfo><Affiliation>Institute of Biotechnology, University of Helsinki, 00014 Helsinki, Finland; Department of Biosciences, University of Helsinki, 00014 Helsinki, Finland; Sainsbury Laboratory, Cambridge University, Bateman Street, Cambridge CB2 1LR, UK. Electronic address: yrjo.helariutta@slcu.cam.ac.uk.</Affiliation>
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<Language>eng</Language>
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<Agency>European Research Council</Agency>
<Country>International</Country>
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<Month>07</Month>
<Day>14</Day>
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<MedlineTA>Curr Biol</MedlineTA>
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Cytokinin and Auxin Display Distinct but Interconnected Distribution and Signaling Profiles to Stimulate Cambial Activity.

Cytokinin and Auxin Display Distinct but Interconnected Distribution and Signaling Profiles to Stimulate Cambial Activity.

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