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Elevated atmospheric CO 2 modifies responses to water-stress and flowering of Mediterranean desert truffle mycorrhizal shrubs
Authors
Francisco Arenas
Eustaquio Gil-Pelegrín
+5 more
Angel Luigi Guarnizo
José Eduardo Marqués Gálvez
Asunción Morte
Alfonso Navarro-Ródenas
José Javier Peguero-Pina
Publication date
1 January 2020
Publisher
Abstract
©. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ This document is the Accepted version of a Published Work that appeared in final form in [Physiologia Plantarum]. To access the final edited and published work see[10.1111/ppl.13190]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, espe- cially in areas with high risk of desertification like the Mediterranean basin. Helianthemum almeriense is an ecologically important Mediterranean shrub with an added interest because it serves as the host for the Terfezia cla- veryi mycorrhizal fungus, which is a desert truffle with increasingly commer- cial interest. Although both plant and fungi are known to be well adapted to dry conditions, it is still uncertain how the increase in atmospheric CO2 will influence them. In this article we have addressed the physiological responses of H. almeriense × T. claveryi mycorrhizal plants to increases in atmospheric CO2 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 photosyn- thesis limitation. High atmospheric CO2 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 event
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DIGITUM Universidad de Murcia (España)
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Last time updated on 29/08/2023