Gene expression responses of paper birch (Betula papyrifera) to elevated CO2 and O3 during leaf maturation and senescence

Kontunen-Soppela, Sari; Parviainen, Juha; Ruhanen, Hanna; Brosché, Mikael; Keinänen, Markku; Thakur, Ramesh; Kolehmainen, Mikko; Kangasjärvi, Jaakko; Oksanen, Elina; Karnosky, David F.; Vapaavuori, E.

doi:10.1016/j.envpol.2009.10.008

Cited by 39 publications

(30 citation statements)

References 65 publications

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“…Senescence also involves activation of several genes, but these are commonly genes associated with proteolysis and degradation of cellular structures (Andersson et al 2004;Hopkins et al 2007;Kontunen-Soppela et al 2010). On the other hand, activation of catabolic processes can result in formation of highly reactive compounds, e.g., highly reactive intermediates of chlorophyll catabolism (Matile et al 1992).…”

Section: Introductionmentioning

confidence: 98%

Can the capacity for isoprene emission acclimate to environmental modifications during autumn senescence in temperate deciduous tree species Populus tremula?

2011

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Changes in isoprene emission (Φ(isoprene)), and foliage photosynthetic (A) rates, isoprene precursor dimethylallyldiphosphate (DMADP), and nitrogen and carbon contents were studied from late summer to intensive leaf fall in Populus tremula to gain insight into the emission controls by temperature and endogenous, senescence-induced, modifications. Methanol emissions, characterizing degradation of cell wall pectins, were also measured. A rapid reduction in Φ(isoprene) and A of 60-70% of the initial value was observed in response to a rapid reduction of ambient temperature by ca. 15°C (cold stress). Later phases of senescence were associated with further reductions in Φ(isoprene) and A, with simultaneous major decrease in nitrogen content. However, during episodes of temperature increase, A and in particular, Φ(isoprene) partly recovered. Variation in Φ(isoprene) during senescence was correlated with average temperature of preceding days, with the highest degree of explained variance observed with average temperature of 6 days. Throughout the study, methanol emissions were small, but a large burst of methanol emission was associated with leaf yellowing and abscission. Overall, these data demonstrate that the capacity for isoprene emission can adjust to environmental conditions in senescing leaves as well, but the responsiveness is low compared with mid-season and is also affected by stress.

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Section: Introductionmentioning

confidence: 98%

Can the capacity for isoprene emission acclimate to environmental modifications during autumn senescence in temperate deciduous tree species Populus tremula?

2011

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“…The influence of elevated [CO 2 ] on the transcriptome is well characterised in trees such as Populus and Betula species [30][31][32][33]. In Populus, expression in leaves of up to 50 genes was changed by elevated [CO 2 ], depending on the developmental age of the leaves [30].…”

Section: Introductionmentioning

confidence: 99%

Expression patterns of C- and N-metabolism related genes in wheat are changed during senescence under elevated CO2 in dry-land agriculture

et al. 2015

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“…The importance of ALDH genes in the stress response has been investigated by analyzing transgenic Arabidospsis thaliana [35]. Kontunen-Soppela et al [36] and Leakey et al [9] found that, under elevated CO 2 concentration (550 µmol·mol −1 ), the gene expression of ALDH was changed in paper birth and soybean, respectively. Moreover, the progressive inhibitors of the activity of enzymes of nitrogen metabolism, NiR and GDH, were two other key genes in our study.…”

Section: Discussionmentioning

confidence: 99%

Genes Responsive to Elevated CO2 Concentrations in Triploid White Poplar and Integrated Gene Network Analysis

Liu

Zhang

et al. 2014

PLoS ONE

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BackgroundThe atmospheric CO2 concentration increases every year. While the effects of elevated CO2 on plant growth, physiology and metabolism have been studied, there is now a pressing need to understand the molecular mechanisms of how plants will respond to future increases in CO2 concentration using genomic techniques.Principal FindingsGene expression in triploid white poplar ((Populus tomentosa ×P. bolleana) ×P. tomentosa) leaves was investigated using the Affymetrix poplar genome gene chip, after three months of growth in controlled environment chambers under three CO2 concentrations. Our physiological findings showed the growth, assessed as stem diameter, was significantly increased, and the net photosynthetic rate was decreased in elevated CO2 concentrations. The concentrations of four major endogenous hormones appeared to actively promote plant development. Leaf tissues under elevated CO2 concentrations had 5,127 genes with different expression patterns in comparison to leaves under the ambient CO2 concentration. Among these, 8 genes were finally selected for further investigation by using randomized variance model corrective ANOVA analysis, dynamic gene expression profiling, gene network construction, and quantitative real-time PCR validation. Among the 8 genes in the network, aldehyde dehydrogenase and pyruvate kinase were situated in the core and had interconnections with other genes.ConclusionsUnder elevated CO2 concentrations, 8 significantly changed key genes involved in metabolism and responding to stimulus of external environment were identified. These genes play crucial roles in the signal transduction network and show strong correlations with elevated CO2 exposure. This study provides several target genes, further investigation of which could provide an initial step for better understanding the molecular mechanisms of plant acclimation and evolution in future rising CO2 concentrations.

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Gene expression responses of paper birch (Betula papyrifera) to elevated CO2 and O3 during leaf maturation and senescence

Cited by 39 publications

References 65 publications

Can the capacity for isoprene emission acclimate to environmental modifications during autumn senescence in temperate deciduous tree species Populus tremula?

Can the capacity for isoprene emission acclimate to environmental modifications during autumn senescence in temperate deciduous tree species Populus tremula?

Expression patterns of C- and N-metabolism related genes in wheat are changed during senescence under elevated CO2 in dry-land agriculture

Genes Responsive to Elevated CO2 Concentrations in Triploid White Poplar and Integrated Gene Network Analysis

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