Publicação
Testing the trade‐balance model: resource stoichiometry does not sufficiently explain AM effects
| dc.contributor.author | Corrêa, Ana | |
| dc.contributor.author | Ferrol, Nuria | |
| dc.contributor.author | Cruz, Cristina | |
| dc.date.accessioned | 2024-01-10T19:20:51Z | |
| dc.date.available | 2024-11-01T01:30:31Z | |
| dc.date.issued | 2023-11 | |
| dc.description.abstract | Variations in arbuscular mycorrhizae (AM) effects on plant growth (MGR) are commonly assumed to result from cost : benefit balances, with C as the cost and, most frequently, P as the benefit. The trade-balance model (TBM) adopts these assumptions and hypothesizes that mycorrhizal benefit depends on C : N : P stoichiometry. Although widely accepted, the TBM has not been experimentally tested. We isolated the parameters included in the TBM and tested these assumptions using it as framework. Oryza sativa plants were supplied with different N : P ratios at low light level, establishing different C : P and C : N exchange rates, and C, N or P limitation. MGR and effects on nutrient uptake, %M, ERM, photosynthesis and shoot starch were measured. C distribution to AM fungi played no role in MGR, and N was essential for all AM effects, including on P nutrition. C distribution to AM and MGR varied with the limiting nutrient (N or P), and evidence of extensive interplay between N and P was observed. The TBM was not confirmed. The results agreed with the exchange of surplus resources and source–sink regulation of resource distribution among plants and AMF. Rather than depending on exchange rates, resource exchange may simply obey both symbiont needs, not requiring further regulation. | pt_PT |
| dc.description.version | info:eu-repo/semantics/acceptedVersion | pt_PT |
| dc.identifier.doi | 10.1111/nph.19432 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10451/61726 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.publisher | Wiley | pt_PT |
| dc.relation | This work was funded by the Portuguese Ministry of Science and Technology (SFRH/BPD/44913/2008, PTDC/BIA- ECS/122214/2010, PTDC/Agro-Pro/115888/2009) and by grants RTI2018-098756-B-I00 and PID2021-125521OB-I00 funded by MCIN/AEI/ 10.13039/501100011033 and by “ERDF A way of making Europe”. | pt_PT |
| dc.subject | Trade balance model, arbuscular mycorrhiza, nutrient stoichiometry, surplus resources, N, P, C, cost:benefit balance | pt_PT |
| dc.title | Testing the trade‐balance model: resource stoichiometry does not sufficiently explain AM effects | pt_PT |
| dc.type | journal article | |
| dspace.entity.type | Publication | |
| oaire.citation.title | New Phytologist | pt_PT |
| person.familyName | Cruz | |
| person.givenName | Cristina | |
| person.identifier.ciencia-id | E416-7201-8A84 | |
| person.identifier.orcid | 0000-0003-3100-463X | |
| rcaap.embargofct | O tipo de licença envolvido com a editora Wiley para esta revista, não envolvendo pagamento (APC), apenas permite acesso em repositório público do formato 'aceite' (i.e não editado e paginado pela editora) após período de embargo de 12 meses após a data da sua publicação final | pt_PT |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | article | pt_PT |
| relation.isAuthorOfPublication | a22a48ab-1c74-450c-a512-cdd10abd962b | |
| relation.isAuthorOfPublication.latestForDiscovery | a22a48ab-1c74-450c-a512-cdd10abd962b |