000112457 001__ 112457
000112457 005__ 20240319080951.0
000112457 0247_ $$2doi$$a10.3389/fpls.2021.786933
000112457 0248_ $$2sideral$$a128381
000112457 037__ $$aART-2022-128381
000112457 041__ $$aeng
000112457 100__ $$aBueno, Amauri
000112457 245__ $$aMinimum leaf conductance (gmin) is higher in the treeline of Pinus uncinata Ram. in the Pyrenees: Michaelis’ hypothesis revisited
000112457 260__ $$c2022
000112457 5060_ $$aAccess copy available to the general public$$fUnrestricted
000112457 5203_ $$aThe search for a universal explanation of the altitudinal limit determined by the alpine treeline has given rise to different hypotheses. In this study, we revisited Michaelis’ hypothesis which proposed that an inadequate “ripening” of the cuticle caused a greater transpiration rate during winter in the treeline. However, few studies with different explanations have investigated the role of passive mechanisms of needles for protecting against water loss during winter in conifers at the treeline. To shed light on this, the cuticular transpiration barrier was studied in the transition from subalpine Pinus uncinata forests to alpine tundra at the upper limit of the species in the Pyrenees. This upper limit of P. uncinata was selected here as an example of the ecotones formed by conifers in the temperate mountains of the northern hemisphere. Our study showed that minimum leaf conductance in needles from upper limit specimens was higher than those measured in specimens living in the lower levels of the sub-alpine forest and also displayed lower cuticle thickness values, which should reinforce the seminal hypothesis by Michaelis. Our study showed clear evidence that supports the inadequate development of needle cuticles as one of the factors that lead to increased transpirational water losses during winter and, consequently, a higher risk of suffering frost drought.
000112457 536__ $$9info:eu-repo/grantAgreement/ES/DGA/H09-20R$$9info:eu-repo/grantAgreement/ES/MICINN BES-2017-081208
000112457 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000112457 590__ $$a5.6$$b2022
000112457 592__ $$a1.231$$b2022
000112457 591__ $$aPLANT SCIENCES$$b27 / 239 = 0.113$$c2022$$dQ1$$eT1
000112457 593__ $$aPlant Science$$c2022$$dQ1
000112457 594__ $$a7.1$$b2022
000112457 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000112457 700__ $$0(orcid)0000-0002-1467-1943$$aAlonso Forn, David
000112457 700__ $$0(orcid)0000-0002-8903-2935$$aPeguero Pina, José Javier$$uUniversidad de Zaragoza
000112457 700__ $$aSouza, Aline Xavier
000112457 700__ $$aFerrio, Juan Pedro
000112457 700__ $$0(orcid)0000-0001-9584-7471$$aSancho Knapik, Domingo$$uUniversidad de Zaragoza
000112457 700__ $$0(orcid)0000-0002-4053-6681$$aGil Pelegrín, Eustaquio$$uUniversidad de Zaragoza
000112457 7102_ $$15011$$2500$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cArea Ingeniería Agroforestal
000112457 7102_ $$15011$$2705$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Producción Vegetal
000112457 7102_ $$15011$$2063$$aUniversidad de Zaragoza$$bDpto. CC.Agrar.y Medio Natural$$cÁrea Botánica
000112457 773__ $$g12 (2022), 786933 [8 pp]$$pFront. plant sci.$$tFrontiers in Plant Science$$x1664-462X
000112457 8564_ $$s4683979$$uhttps://zaguan.unizar.es/record/112457/files/texto_completo.pdf$$yVersión publicada
000112457 8564_ $$s2490806$$uhttps://zaguan.unizar.es/record/112457/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000112457 909CO $$ooai:zaguan.unizar.es:112457$$particulos$$pdriver
000112457 951__ $$a2024-03-18-13:05:44
000112457 980__ $$aARTICLE