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Root and shoot performance of Arabidopsis thaliana exposed to elevated CO2: a physiologic, metabolic and transcriptomic response

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Root and shoot performance of Arabidopsis thaliana exposed to elevated CO2 : a physiologic, metabolic and transcriptomic response. / Jauregui, Iván; Aparicio-tejo, Pedro Mª.; Avila, Concepción; Rueda-lópez, Marina; Aranjuelo, Iker.

In: Journal of Plant Physiology, Vol. 189, 15.09.2015, p. 65-76.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Jauregui, I, Aparicio-tejo, PM, Avila, C, Rueda-lópez, M & Aranjuelo, I 2015, 'Root and shoot performance of Arabidopsis thaliana exposed to elevated CO2: a physiologic, metabolic and transcriptomic response', Journal of Plant Physiology, vol. 189, pp. 65-76. https://doi.org/10.1016/j.jplph.2015.09.012

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Author

Jauregui, Iván ; Aparicio-tejo, Pedro Mª. ; Avila, Concepción ; Rueda-lópez, Marina ; Aranjuelo, Iker. / Root and shoot performance of Arabidopsis thaliana exposed to elevated CO2 : a physiologic, metabolic and transcriptomic response. In: Journal of Plant Physiology. 2015 ; Vol. 189. pp. 65-76.

Bibtex

@article{d9d316ff6c484baba05d627b20adca6b,
title = "Root and shoot performance of Arabidopsis thaliana exposed to elevated CO2: a physiologic, metabolic and transcriptomic response",
abstract = "The responsiveness of C3 plants to raised atmospheric [CO2] levels has been frequently described as constrained by photosynthetic downregulation. The main goal of the current study was to characterize the shoot-root relationship and its implications in plant responsiveness under elevated [CO2] conditions. For this purpose, Arabidopsis thaliana plants were exposed to elevated [CO2] (800 ppm versus 400 ppm [CO2]) and fertilized with a mixed (NH4NO3) nitrogen source. Plant growth, physiology, metabolite and transcriptomic characterizations were carried out at the root and shoot levels. Plant growth under elevated [CO2] conditions was doubled due to increased photosynthetic rates and gas exchange measurements revealed that these plants maintain higher photosynthetic rates over extended periods of time. This positive response of photosynthetic rates to elevated [CO2] was caused by the maintenance of leaf protein and Rubisco concentrations at control levels alongside enhanced energy efficiency. The increased levels of leaf carbohydrates, organic acids and amino acids supported the augmented respiration rates of plants under elevated [CO2]. A transcriptomic analysis allowed the identification of photoassimilate allocation and remobilization as fundamental process used by the plants to maintain the outstanding photosynthetic performance. Moreover, based on the relationship between plant carbon status and hormone functioning, the transcriptomic analyses provided an explanation of why phenology accelerates under elevated [CO2] conditions.",
keywords = "Photosynthesis, Arabidopsis, CO2, Carbohydrate transport, Source-sink, Transcriptomic",
author = "Iv{\'a}n Jauregui and Aparicio-tejo, {Pedro Mª.} and Concepci{\'o}n Avila and Marina Rueda-l{\'o}pez and Iker Aranjuelo",
year = "2015",
month = sep,
day = "15",
doi = "10.1016/j.jplph.2015.09.012",
language = "English",
volume = "189",
pages = "65--76",
journal = "Journal of Plant Physiology",
issn = "0176-1617",
publisher = "Urban und Fischer Verlag GmbH und Co. KG",

}

RIS

TY - JOUR

T1 - Root and shoot performance of Arabidopsis thaliana exposed to elevated CO2

T2 - a physiologic, metabolic and transcriptomic response

AU - Jauregui, Iván

AU - Aparicio-tejo, Pedro Mª.

AU - Avila, Concepción

AU - Rueda-lópez, Marina

AU - Aranjuelo, Iker

PY - 2015/9/15

Y1 - 2015/9/15

N2 - The responsiveness of C3 plants to raised atmospheric [CO2] levels has been frequently described as constrained by photosynthetic downregulation. The main goal of the current study was to characterize the shoot-root relationship and its implications in plant responsiveness under elevated [CO2] conditions. For this purpose, Arabidopsis thaliana plants were exposed to elevated [CO2] (800 ppm versus 400 ppm [CO2]) and fertilized with a mixed (NH4NO3) nitrogen source. Plant growth, physiology, metabolite and transcriptomic characterizations were carried out at the root and shoot levels. Plant growth under elevated [CO2] conditions was doubled due to increased photosynthetic rates and gas exchange measurements revealed that these plants maintain higher photosynthetic rates over extended periods of time. This positive response of photosynthetic rates to elevated [CO2] was caused by the maintenance of leaf protein and Rubisco concentrations at control levels alongside enhanced energy efficiency. The increased levels of leaf carbohydrates, organic acids and amino acids supported the augmented respiration rates of plants under elevated [CO2]. A transcriptomic analysis allowed the identification of photoassimilate allocation and remobilization as fundamental process used by the plants to maintain the outstanding photosynthetic performance. Moreover, based on the relationship between plant carbon status and hormone functioning, the transcriptomic analyses provided an explanation of why phenology accelerates under elevated [CO2] conditions.

AB - The responsiveness of C3 plants to raised atmospheric [CO2] levels has been frequently described as constrained by photosynthetic downregulation. The main goal of the current study was to characterize the shoot-root relationship and its implications in plant responsiveness under elevated [CO2] conditions. For this purpose, Arabidopsis thaliana plants were exposed to elevated [CO2] (800 ppm versus 400 ppm [CO2]) and fertilized with a mixed (NH4NO3) nitrogen source. Plant growth, physiology, metabolite and transcriptomic characterizations were carried out at the root and shoot levels. Plant growth under elevated [CO2] conditions was doubled due to increased photosynthetic rates and gas exchange measurements revealed that these plants maintain higher photosynthetic rates over extended periods of time. This positive response of photosynthetic rates to elevated [CO2] was caused by the maintenance of leaf protein and Rubisco concentrations at control levels alongside enhanced energy efficiency. The increased levels of leaf carbohydrates, organic acids and amino acids supported the augmented respiration rates of plants under elevated [CO2]. A transcriptomic analysis allowed the identification of photoassimilate allocation and remobilization as fundamental process used by the plants to maintain the outstanding photosynthetic performance. Moreover, based on the relationship between plant carbon status and hormone functioning, the transcriptomic analyses provided an explanation of why phenology accelerates under elevated [CO2] conditions.

KW - Photosynthesis

KW - Arabidopsis

KW - CO2

KW - Carbohydrate transport

KW - Source-sink

KW - Transcriptomic

U2 - 10.1016/j.jplph.2015.09.012

DO - 10.1016/j.jplph.2015.09.012

M3 - Journal article

VL - 189

SP - 65

EP - 76

JO - Journal of Plant Physiology

JF - Journal of Plant Physiology

SN - 0176-1617

ER -