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Plant height and hydraulic vulnerability to drought and cold

Olson, Mark E. ; Soriano, Diana ; Rosell, Julieta A. ; Anfodillo, Tommaso ; Donoghue, Michael J. ; Edwards, Erika J. ; León-Gómez, Calixto ; Dawson, Todd ; Martínez, J. Julio Camarero ; Castorena, Matiss ; Echeverría, Alberto ; Espinosa, Carlos I. ; Fajardo, Alex ; Gazol, Antonio ; Isnard, Sandrine ; Lima, Rivete S. ; Marcati, Carmen R. ; Méndez-Alonzo, Rodrigo

Proceedings of the National Academy of Sciences - PNAS, 2018-07, Vol.115 (29), p.7551-7556 [Periódico revisado por pares]

United States: National Academy of Sciences

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Título:
Plant height and hydraulic vulnerability to drought and cold
Autor: Olson, Mark E. ; Soriano, Diana ; Rosell, Julieta A. ; Anfodillo, Tommaso ; Donoghue, Michael J. ; Edwards, Erika J. ; León-Gómez, Calixto ; Dawson, Todd ; Martínez, J. Julio Camarero ; Castorena, Matiss ; Echeverría, Alberto ; Espinosa, Carlos I. ; Fajardo, Alex ; Gazol, Antonio ; Isnard, Sandrine ; Lima, Rivete S. ; Marcati, Carmen R. ; Méndez-Alonzo, Rodrigo
Assuntos: Acclimatization ; Angiosperms ; Biodiversity ; Biodiversity and Ecology ; Biological Sciences ; Botanics ; Brittleness ; Climate change ; Cold pressing ; Cold Temperature ; Conduits ; Conspecifics ; Dehydration ; Dieback ; Drought ; Ecology, environment ; Ecosystems ; Embolism ; Embolisms ; Environmental Sciences ; Hydraulics ; Life Sciences ; Magnoliopsida - growth & development ; Nerve conduction ; Plant growth ; Plant tolerance ; Plantations ; Systematics, Phylogenetics and taxonomy ; Tundra ; Vegetal Biology
É parte de: Proceedings of the National Academy of Sciences - PNAS, 2018-07, Vol.115 (29), p.7551-7556
Notas: PMCID: PMC6055177
Author contributions: M.E.O., J.A.R., T.A., M.J.D., E.J.E., T.D., and S.I. designed research; M.E.O., D.S., J.A.R., M.J.D., E.J.E., C.L.-G., J.J.C.M., M.C., A.E., C.I.E., A.F., A.G., S.I., R.L., C.R.M., and R.M.-A. performed research; M.E.O., D.S., T.A., M.J.D., and E.J.E. contributed new reagents/analytic tools; M.E.O., D.S., J.A.R., T.A., M.J.D., E.J.E., and J.J.C.M. analyzed data; and M.E.O., J.A.R., T.A., M.J.D., E.J.E., T.D., A.F., S.I., and R.M.-A. wrote the paper.
2Present address: Department of Ecology and Evolutionary Biology, University of Arizona, Tucson, AZ 85721.
Contributed by Michael J. Donoghue, May 17, 2018 (sent for review January 8, 2018; reviewed by Pamela Diggle, Brian J. Enquist, and Frank W. Ewers)
Reviewers: P.D., University of Connecticut; B.J.E., University of Arizona; and F.W.E., California State Polytechnic University, Pomona.
Descrição: Understanding how plants survive drought and cold is increasingly important as plants worldwide experience dieback with drought in moist places and grow taller with warming in cold ones. Crucial in plant climate adaptation are the diameters of water-transporting conduits. Sampling 537 species across climate zones dominated by angiosperms, we find that plant size is unambiguously the main driver of conduit diameter variation. And because taller plants have wider conduits, and wider conduits within species are more vulnerable to conduction-blocking embolisms, taller conspecifics should be more vulnerable than shorter ones, a prediction we confirm with a plantation experiment. As a result, maximum plant size should be short under drought and cold, which cause embolism, or increase if these pressures relax. That conduit diameter and embolism vulnerability are inseparably related to plant size helps explain why factors that interact with conduit diameter, such as drought or warming, are altering plant heights worldwide.
Editor: United States: National Academy of Sciences
Idioma: Inglês

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Plant height and hydraulic vulnerability to drought and cold

United States: National Academy of Sciences

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