The transcriptome of Populus in elevated CO reveals increased anthocyanin biosynthesis during delayed autumnal senescence.
Identifieur interne : 003278 ( Main/Corpus ); précédent : 003277; suivant : 003279The transcriptome of Populus in elevated CO reveals increased anthocyanin biosynthesis during delayed autumnal senescence.
Auteurs : M J Tallis ; Y. Lin ; A. Rogers ; J. Zhang ; N R Street ; F. Miglietta ; D F Karnosky ; P. De Angelis ; C. Calfapietra ; G. TaylorSource :
- The New phytologist [ 1469-8137 ] ; 2010.
English descriptors
- KwdEn :
- Anthocyanins (biosynthesis), Carbohydrates (analysis), Carbon Monoxide (pharmacology), Chlorophyll (metabolism), Gene Expression Profiling (MeSH), Gene Expression Regulation, Plant (drug effects), Genes, Plant (genetics), Metabolic Networks and Pathways (drug effects), Metabolic Networks and Pathways (genetics), Oligonucleotide Array Sequence Analysis (MeSH), Plant Leaves (drug effects), Plant Leaves (metabolism), Populus (genetics), RNA, Messenger (genetics), RNA, Messenger (metabolism), Reproducibility of Results (MeSH), Reverse Transcriptase Polymerase Chain Reaction (MeSH), Seasons (MeSH), Time Factors (MeSH).
- MESH :
- chemical , analysis : Carbohydrates.
- chemical , biosynthesis : Anthocyanins.
- chemical , genetics : RNA, Messenger.
- chemical , metabolism : Chlorophyll, RNA, Messenger.
- chemical , pharmacology : Carbon Monoxide.
- drug effects : Gene Expression Regulation, Plant, Metabolic Networks and Pathways, Plant Leaves.
- genetics : Genes, Plant, Metabolic Networks and Pathways, Populus.
- metabolism : Plant Leaves.
- Gene Expression Profiling, Oligonucleotide Array Sequence Analysis, Reproducibility of Results, Reverse Transcriptase Polymerase Chain Reaction, Seasons, Time Factors.
Abstract
*The delay in autumnal senescence that has occurred in recent decades has been linked to rising temperatures. Here, we suggest that increasing atmospheric CO2 may partly account for delayed autumnal senescence and for the first time, through transcriptome analysis, identify gene expression changes associated with this delay. *Using a plantation of Populus x euramericana grown in elevated [CO2] (e[CO2]) with free-air CO2 enrichment (FACE) technology, we investigated the molecular and biochemical basis of this response. A Populus cDNA microarray was used to identify genes representing multiple biochemical pathways influenced by e[CO2] during senescence. Gene expression changes were confirmed through real-time quantitative PCR, and leaf biochemical assays. *Pathways for secondary metabolism and glycolysis were significantly up-regulated by e[CO2] during senescence, in particular, those related to anthocyanin biosynthesis. Expressed sequence tags (ESTs) representing the two most significantly up-regulated transcripts in e[CO2], LDOX (leucoanthocyanidin dioxgenase) and DFR (dihydroflavonol reductase), gave (e[CO2]/ambient CO(2) (a[CO2])) expression ratios of 39.6 and 19.3, respectively. *We showed that in e[CO2] there was increased autumnal leaf sugar accumulation and up-regulation of genes determining anthocyanin biosynthesis which, we propose, prolongs leaf longevity during natural autumnal senescence.
DOI: 10.1111/j.1469-8137.2010.03184.x
PubMed: 20202130
Links to Exploration step
pubmed:20202130Le document en format XML
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<term>Carbon Monoxide (pharmacology)</term>
<term>Chlorophyll (metabolism)</term>
<term>Gene Expression Profiling (MeSH)</term>
<term>Gene Expression Regulation, Plant (drug effects)</term>
<term>Genes, Plant (genetics)</term>
<term>Metabolic Networks and Pathways (drug effects)</term>
<term>Metabolic Networks and Pathways (genetics)</term>
<term>Oligonucleotide Array Sequence Analysis (MeSH)</term>
<term>Plant Leaves (drug effects)</term>
<term>Plant Leaves (metabolism)</term>
<term>Populus (genetics)</term>
<term>RNA, Messenger (genetics)</term>
<term>RNA, Messenger (metabolism)</term>
<term>Reproducibility of Results (MeSH)</term>
<term>Reverse Transcriptase Polymerase Chain Reaction (MeSH)</term>
<term>Seasons (MeSH)</term>
<term>Time Factors (MeSH)</term>
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<front><div type="abstract" xml:lang="en">*The delay in autumnal senescence that has occurred in recent decades has been linked to rising temperatures. Here, we suggest that increasing atmospheric CO2 may partly account for delayed autumnal senescence and for the first time, through transcriptome analysis, identify gene expression changes associated with this delay. *Using a plantation of Populus x euramericana grown in elevated [CO2] (e[CO2]) with free-air CO2 enrichment (FACE) technology, we investigated the molecular and biochemical basis of this response. A Populus cDNA microarray was used to identify genes representing multiple biochemical pathways influenced by e[CO2] during senescence. Gene expression changes were confirmed through real-time quantitative PCR, and leaf biochemical assays. *Pathways for secondary metabolism and glycolysis were significantly up-regulated by e[CO2] during senescence, in particular, those related to anthocyanin biosynthesis. Expressed sequence tags (ESTs) representing the two most significantly up-regulated transcripts in e[CO2], LDOX (leucoanthocyanidin dioxgenase) and DFR (dihydroflavonol reductase), gave (e[CO2]/ambient CO(2) (a[CO2])) expression ratios of 39.6 and 19.3, respectively. *We showed that in e[CO2] there was increased autumnal leaf sugar accumulation and up-regulation of genes determining anthocyanin biosynthesis which, we propose, prolongs leaf longevity during natural autumnal senescence.</div>
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<Abstract><AbstractText>*The delay in autumnal senescence that has occurred in recent decades has been linked to rising temperatures. Here, we suggest that increasing atmospheric CO2 may partly account for delayed autumnal senescence and for the first time, through transcriptome analysis, identify gene expression changes associated with this delay. *Using a plantation of Populus x euramericana grown in elevated [CO2] (e[CO2]) with free-air CO2 enrichment (FACE) technology, we investigated the molecular and biochemical basis of this response. A Populus cDNA microarray was used to identify genes representing multiple biochemical pathways influenced by e[CO2] during senescence. Gene expression changes were confirmed through real-time quantitative PCR, and leaf biochemical assays. *Pathways for secondary metabolism and glycolysis were significantly up-regulated by e[CO2] during senescence, in particular, those related to anthocyanin biosynthesis. Expressed sequence tags (ESTs) representing the two most significantly up-regulated transcripts in e[CO2], LDOX (leucoanthocyanidin dioxgenase) and DFR (dihydroflavonol reductase), gave (e[CO2]/ambient CO(2) (a[CO2])) expression ratios of 39.6 and 19.3, respectively. *We showed that in e[CO2] there was increased autumnal leaf sugar accumulation and up-regulation of genes determining anthocyanin biosynthesis which, we propose, prolongs leaf longevity during natural autumnal senescence.</AbstractText>
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