Plant growth responses to elevated atmospheric CO2 are increased by phosphorus sufficiency but not by arbuscular mycorrhizas

Iver Jakobsen, Sally E. Smith, F. Andrew Smith, Stephanie J. Watts-Williams, Signe Sandbech Clausen, Mette Grønlund

Research output: Contribution to journalJournal articleResearchpeer-review

248 Downloads (Pure)

Abstract

Capturing the full growth potential in crops under future elevated CO2 (eCO2) concentrations would be facilitated by improved understanding of eCO2 effects on uptake and use of mineral nutrients. This study investigates interactions of eCO2, soil phosphorus (P), and arbuscular mycorrhizal (AM) symbiosis in Medicago truncatula and Brachypodium distachyon grown under the same conditions. The focus was on eCO2 effects on vegetative growth, efficiency in acquisition and use of P, and expression of phosphate transporter (PT) genes. Growth responses to eCO2 were positive at P sufficiency, but under low-P conditions they ranged from non-significant in M. truncatula to highly significant in B. distachyon. Growth of M. truncatula was increased by AM at low P conditions at both CO2 levels and eCO2×AM interactions were sparse. Elevated CO2 had small effects on P acquisition, but enhanced conversion of tissue P into biomass. Expression of PT genes was influenced by eCO2, but effects were inconsistent across genes and species. The ability of eCO2 to partly mitigate P limitation-induced growth reductions in B. distachyon was associated with enhanced P use efficiency, and requirements for P fertilizers may not increase in such species in future CO2-rich climates.
Original languageEnglish
JournalJournal of Experimental Botany
Volume67
Issue number21
Pages (from-to)6173-6186
ISSN0022-0957
DOIs
Publication statusPublished - 2016

Bibliographical note

Copyright: The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

Keywords

  • Brachypodium distachyon
  • Medicago truncatula
  • Arbuscular mycorrhizal symbiosis
  • Elevated atmospheric CO2
  • Gene expression
  • Phosphate transporters
  • Plant growth
  • Plant phosphorus uptake
  • Soil phosphorus

Cite this

Jakobsen, I., Smith, S. E., Smith, F. A., Watts-Williams, S. J., Clausen, S. S., & Grønlund, M. (2016). Plant growth responses to elevated atmospheric CO2 are increased by phosphorus sufficiency but not by arbuscular mycorrhizas. Journal of Experimental Botany, 67(21), 6173-6186. https://doi.org/10.1093/jxb/erw383
Jakobsen, Iver ; Smith, Sally E. ; Smith, F. Andrew ; Watts-Williams, Stephanie J. ; Clausen, Signe Sandbech ; Grønlund, Mette. / Plant growth responses to elevated atmospheric CO2 are increased by phosphorus sufficiency but not by arbuscular mycorrhizas. In: Journal of Experimental Botany. 2016 ; Vol. 67, No. 21. pp. 6173-6186.
@article{214afb3fe0bb44988ac0ad920c2861b9,
title = "Plant growth responses to elevated atmospheric CO2 are increased by phosphorus sufficiency but not by arbuscular mycorrhizas",
abstract = "Capturing the full growth potential in crops under future elevated CO2 (eCO2) concentrations would be facilitated by improved understanding of eCO2 effects on uptake and use of mineral nutrients. This study investigates interactions of eCO2, soil phosphorus (P), and arbuscular mycorrhizal (AM) symbiosis in Medicago truncatula and Brachypodium distachyon grown under the same conditions. The focus was on eCO2 effects on vegetative growth, efficiency in acquisition and use of P, and expression of phosphate transporter (PT) genes. Growth responses to eCO2 were positive at P sufficiency, but under low-P conditions they ranged from non-significant in M. truncatula to highly significant in B. distachyon. Growth of M. truncatula was increased by AM at low P conditions at both CO2 levels and eCO2×AM interactions were sparse. Elevated CO2 had small effects on P acquisition, but enhanced conversion of tissue P into biomass. Expression of PT genes was influenced by eCO2, but effects were inconsistent across genes and species. The ability of eCO2 to partly mitigate P limitation-induced growth reductions in B. distachyon was associated with enhanced P use efficiency, and requirements for P fertilizers may not increase in such species in future CO2-rich climates.",
keywords = "Brachypodium distachyon, Medicago truncatula, Arbuscular mycorrhizal symbiosis, Elevated atmospheric CO2, Gene expression, Phosphate transporters, Plant growth, Plant phosphorus uptake, Soil phosphorus",
author = "Iver Jakobsen and Smith, {Sally E.} and Smith, {F. Andrew} and Watts-Williams, {Stephanie J.} and Clausen, {Signe Sandbech} and Mette Gr{\o}nlund",
note = "Copyright: The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.",
year = "2016",
doi = "10.1093/jxb/erw383",
language = "English",
volume = "67",
pages = "6173--6186",
journal = "Journal of Experimental Botany",
issn = "0022-0957",
publisher = "Oxford University Press",
number = "21",

}

Jakobsen, I, Smith, SE, Smith, FA, Watts-Williams, SJ, Clausen, SS & Grønlund, M 2016, 'Plant growth responses to elevated atmospheric CO2 are increased by phosphorus sufficiency but not by arbuscular mycorrhizas', Journal of Experimental Botany, vol. 67, no. 21, pp. 6173-6186. https://doi.org/10.1093/jxb/erw383

Plant growth responses to elevated atmospheric CO2 are increased by phosphorus sufficiency but not by arbuscular mycorrhizas. / Jakobsen, Iver; Smith, Sally E. ; Smith, F. Andrew ; Watts-Williams, Stephanie J.; Clausen, Signe Sandbech; Grønlund, Mette.

In: Journal of Experimental Botany, Vol. 67, No. 21, 2016, p. 6173-6186.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Plant growth responses to elevated atmospheric CO2 are increased by phosphorus sufficiency but not by arbuscular mycorrhizas

AU - Jakobsen, Iver

AU - Smith, Sally E.

AU - Smith, F. Andrew

AU - Watts-Williams, Stephanie J.

AU - Clausen, Signe Sandbech

AU - Grønlund, Mette

N1 - Copyright: The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

PY - 2016

Y1 - 2016

N2 - Capturing the full growth potential in crops under future elevated CO2 (eCO2) concentrations would be facilitated by improved understanding of eCO2 effects on uptake and use of mineral nutrients. This study investigates interactions of eCO2, soil phosphorus (P), and arbuscular mycorrhizal (AM) symbiosis in Medicago truncatula and Brachypodium distachyon grown under the same conditions. The focus was on eCO2 effects on vegetative growth, efficiency in acquisition and use of P, and expression of phosphate transporter (PT) genes. Growth responses to eCO2 were positive at P sufficiency, but under low-P conditions they ranged from non-significant in M. truncatula to highly significant in B. distachyon. Growth of M. truncatula was increased by AM at low P conditions at both CO2 levels and eCO2×AM interactions were sparse. Elevated CO2 had small effects on P acquisition, but enhanced conversion of tissue P into biomass. Expression of PT genes was influenced by eCO2, but effects were inconsistent across genes and species. The ability of eCO2 to partly mitigate P limitation-induced growth reductions in B. distachyon was associated with enhanced P use efficiency, and requirements for P fertilizers may not increase in such species in future CO2-rich climates.

AB - Capturing the full growth potential in crops under future elevated CO2 (eCO2) concentrations would be facilitated by improved understanding of eCO2 effects on uptake and use of mineral nutrients. This study investigates interactions of eCO2, soil phosphorus (P), and arbuscular mycorrhizal (AM) symbiosis in Medicago truncatula and Brachypodium distachyon grown under the same conditions. The focus was on eCO2 effects on vegetative growth, efficiency in acquisition and use of P, and expression of phosphate transporter (PT) genes. Growth responses to eCO2 were positive at P sufficiency, but under low-P conditions they ranged from non-significant in M. truncatula to highly significant in B. distachyon. Growth of M. truncatula was increased by AM at low P conditions at both CO2 levels and eCO2×AM interactions were sparse. Elevated CO2 had small effects on P acquisition, but enhanced conversion of tissue P into biomass. Expression of PT genes was influenced by eCO2, but effects were inconsistent across genes and species. The ability of eCO2 to partly mitigate P limitation-induced growth reductions in B. distachyon was associated with enhanced P use efficiency, and requirements for P fertilizers may not increase in such species in future CO2-rich climates.

KW - Brachypodium distachyon

KW - Medicago truncatula

KW - Arbuscular mycorrhizal symbiosis

KW - Elevated atmospheric CO2

KW - Gene expression

KW - Phosphate transporters

KW - Plant growth

KW - Plant phosphorus uptake

KW - Soil phosphorus

U2 - 10.1093/jxb/erw383

DO - 10.1093/jxb/erw383

M3 - Journal article

VL - 67

SP - 6173

EP - 6186

JO - Journal of Experimental Botany

JF - Journal of Experimental Botany

SN - 0022-0957

IS - 21

ER -