Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/121022
Citations
Scopus Web of Science® Altmetric
?
?
Type: Journal article
Title: Resource allocation to growth or luxury consumption drives mycorrhizal responses
Author: Riley, R.
Cavagnaro, T.
Brien, C.
Smith, F.A.
Smith, S.
Berger, B.
Garnett, T.
Stonor, R.
Schilling, R.
Chen, Z.-.H.
Powell, J.
Citation: Ecology Letters, 2019; 22(11):1757-1766
Publisher: Wiley
Issue Date: 2019
ISSN: 1461-023X
1461-0248
Statement of
Responsibility: 
Rohan C. Riley, Timothy R. Cavagnaro, Chris Brien, F. Andrew Smith, Sally E. Smith, Bettina Berger, Trevor Garnett, Rebecca Stonor, Rhiannon K. Schilling, Zhong‐Hua Chen, Jeff R. Powell
Abstract: Highly variable phenotypic responses in mycorrhizal plants challenge our functional understanding of plant‐fungal mutualisms. Using non‐invasive high‐throughput phenotyping, we observed that arbuscular mycorrhizal (AM) fungi relieved phosphorus (P) limitation and enhanced growth of Brachypodium distachyon under P‐limited conditions, while photosynthetic limitation under low nitrogen (N) was exacerbated by the fungus. However, these responses were strongly dependent on host genotype: only the faster growing genotype (Bd3‐1) utilised P transferred from the fungus to achieve improved growth under P‐limited conditions. Under low N, the slower growing genotype (Bd21) had a carbon and N surplus that was linked to a less negative growth response compared with the faster growing genotype. These responses were linked to the regulation of N : P stoichiometry, couples resource allocation to growth or luxury consumption in diverse plant lineages. Our results attest strongly to a mechanism in plants by which plant genotype‐specific resource economics drive phenotypic outcomes during AM symbioses.
Keywords: Biodiversity; competition; ecosystem function; functional traits; growth strategy; plant-microbe interactions
Rights: © 2019 John Wiley & Sons Ltd/CNRS
RMID: 0030131427
DOI: 10.1111/ele.13353
Grant ID: http://purl.org/au-research/grants/arc/DP140103936
Appears in Collections:Agriculture, Food and Wine publications

Files in This Item:
There are no files associated with this item.


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.