气候变化领域集成服务门户(CCPortal): The Widened Pipe Model of plant hydraulic evolution

CCPortal

DOI	10.1073/pnas.2100314118
	The Widened Pipe Model of plant hydraulic evolution
	Koçillari L.; Olson M.E.; Suweis S.; Rocha R.P.; Lovison A.; Cardin F.; Dawson T.E.; Echeverría A.; Fajardo A.; Lechthaler S.; Martínez-Pérez C.; Marcati C.R.; Chung K.-F.; Rosell J.A.; Segovia-Rivas A.; Williams C.B.; Petrone-Mendoza E.; Rinaldo A.; Anfodillo T.; Banavar J.R.; Maritan A.
发表日期	2021
ISSN	0027-8424
卷号	118 期号:22
英文摘要	Shaping global water and carbon cycles, plants lift water from roots to leaves through xylem conduits. The importance of xylem water conduction makes it crucial to understand how natural selection deploys conduit diameters within and across plants. Wider conduits transport more water but are likely more vulnerable to conductionblocking gas embolisms and cost more for a plant to build, a tension necessarily shaping xylem conduit diameters along plant stems. We build on this expectation to present the Widened Pipe Model (WPM) of plant hydraulic evolution, testing it against a global dataset. The WPM predicts that xylem conduits should be narrowest at the stem tips, widening quickly before plateauing toward the stem base. This universal profile emerges from Pareto modeling of a tradeoff between just two competing vectors of natural selection: one favoring rapid widening of conduits tip to base, minimizing hydraulic resistance, and another favoring slow widening of conduits, minimizing carbon cost and embolism risk. Our data spanning terrestrial plant orders, life forms, habitats, and sizes conform closely to WPM predictions. The WPM highlights carbon economy as a powerful vector of natural selection shaping plant function. It further implies that factors that cause resistance in plant conductive systems, such as conduit pit membrane resistance, should scale in exact harmony with tip-to-base conduit widening. Furthermore, the WPM implies that alterations in the environments of individual plants should lead to changes in plant height, for example, shedding terminal branches and resprouting at lower height under drier climates, thus achieving narrower and potentially more embolism-resistant conduits. © 2021 National Academy of Sciences. All rights reserved.
英文关键词	Adaptation; Allometry; Pareto optimality; Plant hydraulics; Xylem
语种	英语
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/238540
作者单位	Dipartimento di Fisica e Astronomia G. Galilei, Istituto Nazionale di Fisica Nucleare, Università di Padova, Padova, 35131, Italy; Laboratory of Neural Computation, Istituto Italiano di Tecnologia, Rovereto, 38068, Italy; Instituto de Biología, Universidad Nacional Autónoma de México, Ciudad de México, 04510, Mexico; Departamento de Física, Universidade Federal de Santa Catarina, Florianópolis-SC, 88040-900, Brazil; Dipartimento di Matematica Tullio Levi-Civita, Università di Padova, Padova, 35121, Italy; Department of Integrative Biology, University of California, Berkeley, CA 94720-3140, United States; Department of Environmental Science, Policy and Management, University of California, Berkeley, CA 94720-3140, United States; Instituto de Investigación Interdisciplinario (I3), Universidad de Talca, Campus Lircay, Talca, 3460000, Chile; Dipartimento Territorio e Sistemi Agro-Forestali, Università di Padova, Legnaro, 35020, Italy; Departamento de Ecología Evolutiva, Instituto de Ecología, Universidad Na...
推荐引用方式 GB/T 7714	Koçillari L.,Olson M.E.,Suweis S.,et al. The Widened Pipe Model of plant hydraulic evolution[J],2021,118(22).
APA	Koçillari L..,Olson M.E..,Suweis S..,Rocha R.P..,Lovison A..,...&Maritan A..(2021).The Widened Pipe Model of plant hydraulic evolution.Proceedings of the National Academy of Sciences of the United States of America,118(22).
MLA	Koçillari L.,et al."The Widened Pipe Model of plant hydraulic evolution".Proceedings of the National Academy of Sciences of the United States of America 118.22(2021).