Molecular control of wood formation in trees.
Identifieur interne : 001C38 ( Main/Exploration ); précédent : 001C37; suivant : 001C39Molecular control of wood formation in trees.
Auteurs : Zheng-Hua Ye [États-Unis] ; Ruiqin Zhong [États-Unis]Source :
- Journal of experimental botany [ 1460-2431 ] ; 2015.
Descripteurs français
- KwdFr :
- MESH :
- génétique : Arbres.
- Bois, Génome végétal.
English descriptors
- KwdEn :
- MESH :
- genetics : Trees.
- Genome, Plant, Wood.
Abstract
Wood (also termed secondary xylem) is the most abundant biomass produced by plants, and is one of the most important sinks for atmospheric carbon dioxide. The development of wood begins with the differentiation of the lateral meristem, vascular cambium, into secondary xylem mother cells followed by cell expansion, secondary wall deposition, programmed cell death, and finally heartwood formation. Significant progress has been made in the past decade in uncovering the molecular players involved in various developmental stages of wood formation in tree species. Hormonal signalling has been shown to play critical roles in vascular cambium cell proliferation and a peptide-receptor-transcription factor regulatory mechanism similar to that controlling the activity of apical meristems is proposed to be involved in the maintenance of vascular cambium activity. It has been demonstrated that the differentiation of vascular cambium into xylem mother cells is regulated by plant hormones and HD-ZIP III transcription factors, and the coordinated activation of secondary wall biosynthesis genes during wood formation is mediated by a transcription network encompassing secondary wall NAC and MYB master switches and their downstream transcription factors. Most genes encoding the biosynthesis enzymes for wood components (cellulose, xylan, glucomannan, and lignin) have been identified in poplar and a number of them have been functionally characterized. With the availability of genome sequences of tree species from both gymnosperms and angiosperms, and the identification of a suite of wood-associated genes, it is expected that our understanding of the molecular control of wood formation in trees will be greatly accelerated.
DOI: 10.1093/jxb/erv081
PubMed: 25750422
Affiliations:
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The development of wood begins with the differentiation of the lateral meristem, vascular cambium, into secondary xylem mother cells followed by cell expansion, secondary wall deposition, programmed cell death, and finally heartwood formation. Significant progress has been made in the past decade in uncovering the molecular players involved in various developmental stages of wood formation in tree species. Hormonal signalling has been shown to play critical roles in vascular cambium cell proliferation and a peptide-receptor-transcription factor regulatory mechanism similar to that controlling the activity of apical meristems is proposed to be involved in the maintenance of vascular cambium activity. It has been demonstrated that the differentiation of vascular cambium into xylem mother cells is regulated by plant hormones and HD-ZIP III transcription factors, and the coordinated activation of secondary wall biosynthesis genes during wood formation is mediated by a transcription network encompassing secondary wall NAC and MYB master switches and their downstream transcription factors. Most genes encoding the biosynthesis enzymes for wood components (cellulose, xylan, glucomannan, and lignin) have been identified in poplar and a number of them have been functionally characterized. With the availability of genome sequences of tree species from both gymnosperms and angiosperms, and the identification of a suite of wood-associated genes, it is expected that our understanding of the molecular control of wood formation in trees will be greatly accelerated. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">25750422</PMID><DateCompleted><Year>2016</Year><Month>04</Month><Day>05</Day></DateCompleted><DateRevised><Year>2015</Year><Month>07</Month><Day>08</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1460-2431</ISSN><JournalIssue CitedMedium="Internet"><Volume>66</Volume><Issue>14</Issue><PubDate><Year>2015</Year><Month>Jul</Month></PubDate></JournalIssue><Title>Journal of experimental botany</Title><ISOAbbreviation>J Exp Bot</ISOAbbreviation></Journal><ArticleTitle>Molecular control of wood formation in trees.</ArticleTitle><Pagination><MedlinePgn>4119-31</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1093/jxb/erv081</ELocationID><Abstract><AbstractText>Wood (also termed secondary xylem) is the most abundant biomass produced by plants, and is one of the most important sinks for atmospheric carbon dioxide. The development of wood begins with the differentiation of the lateral meristem, vascular cambium, into secondary xylem mother cells followed by cell expansion, secondary wall deposition, programmed cell death, and finally heartwood formation. Significant progress has been made in the past decade in uncovering the molecular players involved in various developmental stages of wood formation in tree species. Hormonal signalling has been shown to play critical roles in vascular cambium cell proliferation and a peptide-receptor-transcription factor regulatory mechanism similar to that controlling the activity of apical meristems is proposed to be involved in the maintenance of vascular cambium activity. It has been demonstrated that the differentiation of vascular cambium into xylem mother cells is regulated by plant hormones and HD-ZIP III transcription factors, and the coordinated activation of secondary wall biosynthesis genes during wood formation is mediated by a transcription network encompassing secondary wall NAC and MYB master switches and their downstream transcription factors. Most genes encoding the biosynthesis enzymes for wood components (cellulose, xylan, glucomannan, and lignin) have been identified in poplar and a number of them have been functionally characterized. With the availability of genome sequences of tree species from both gymnosperms and angiosperms, and the identification of a suite of wood-associated genes, it is expected that our understanding of the molecular control of wood formation in trees will be greatly accelerated. </AbstractText><CopyrightInformation>© The Author 2015. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissions@oup.com.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Ye</LastName><ForeName>Zheng-Hua</ForeName><Initials>ZH</Initials><AffiliationInfo><Affiliation>Department of Plant Biology, University of Georgia, Athens, GA 30602, USA yh@uga.edu.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Zhong</LastName><ForeName>Ruiqin</ForeName><Initials>R</Initials><AffiliationInfo><Affiliation>Department of Plant Biology, University of Georgia, Athens, GA 30602, USA.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D013486">Research Support, U.S. Gov't, Non-P.H.S.</PublicationType><PublicationType UI="D016454">Review</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2015</Year><Month>03</Month><Day>05</Day></ArticleDate></Article><MedlineJournalInfo><Country>England</Country><MedlineTA>J Exp Bot</MedlineTA><NlmUniqueID>9882906</NlmUniqueID><ISSNLinking>0022-0957</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D018745" MajorTopicYN="N">Genome, Plant</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D014197" MajorTopicYN="Y">Trees</DescriptorName><QualifierName UI="Q000235" MajorTopicYN="N">genetics</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D014934" MajorTopicYN="Y">Wood</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Plant hormones</Keyword><Keyword MajorTopicYN="N">secondary wall</Keyword><Keyword MajorTopicYN="N">secondary xylem</Keyword><Keyword MajorTopicYN="N">transcriptional regulation</Keyword><Keyword MajorTopicYN="N">vascular cambium</Keyword><Keyword MajorTopicYN="N">wood formation.</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="entrez"><Year>2015</Year><Month>3</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2015</Year><Month>3</Month><Day>10</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2016</Year><Month>4</Month><Day>6</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">25750422</ArticleId><ArticleId IdType="pii">erv081</ArticleId><ArticleId IdType="doi">10.1093/jxb/erv081</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>États-Unis</li></country><region><li>Géorgie (États-Unis)</li></region></list><tree><country name="États-Unis"><region name="Géorgie (États-Unis)"><name sortKey="Ye, Zheng Hua" sort="Ye, Zheng Hua" uniqKey="Ye Z" first="Zheng-Hua" last="Ye">Zheng-Hua Ye</name></region><name sortKey="Zhong, Ruiqin" sort="Zhong, Ruiqin" uniqKey="Zhong R" first="Ruiqin" last="Zhong">Ruiqin Zhong</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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