Journal
PHYSIOLOGIA PLANTARUM
Volume 170, Issue 4, Pages 537-549Publisher
WILEY
DOI: 10.1111/ppl.13190
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Funding
- AEI/FEDER, UE [CGL2016-78946-R]
- FEDER [20866/PI/18]
- Programa Regional de Fomento de la Investigacion - Plan de Actuacion 2019 - de la Fundacion Seneca, Agencia de Ciencia y Tecnologia of the Region of Murcia, Spain [20866/PI/18]
- Spanish National Institute for Agriculture and Food Research and Technology [RTA2015-00054-C02-01]
- MINECO (Ministerio de Economia y Competitividad) [DI-14-06904, BES-2017-081439, IJCI-2016-28252]
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Predicted increases in atmospheric concentration of carbon dioxide (CO2) coupled with increased temperatures and drought are expected to strongly influence the development of most of the plant species in the world, especially in areas with high risk of desertification like the Mediterranean basin.Helianthemum almerienseis an ecologically important Mediterranean shrub with an added interest because it serves as the host for theTerfezia claveryimycorrhizal fungus, which is a desert truffle with increasingly commercial interest. Although both plant and fungi are known to be well adapted to dry conditions, it is still uncertain how the increase in atmospheric CO(2)will influence them. In this article we have addressed the physiological responses ofH. almeriensexT. claveryimycorrhizal plants to increases in atmospheric CO(2)coupled with drought and high vapor pressure deficit. This work reports one of the few estimations of mesophyll conductance in a drought deciduous Mediterranean shrub and evaluates its role in photosynthesis limitation. High atmospheric CO(2)concentrations help desert truffle mycorrhizal plants to cope with the adverse effects of progressive drought during Mediterranean springs by improving carbon net assimilation, intrinsic water use efficiency and dispersal of the species through increased flowering events.
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