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Low baseline intraspecific variation in leaf pressure-volume traits: Biophysical basis and implications for spectroscopic sensing.
Browne, Marvin; Bartlett, Megan K; Henry, Christian; Jarrahi, Mona; John, Grace; Scoffoni, Christine; Yardimci, Nezih Tolga; Sack, Lawren.
Afiliación
  • Browne M; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA.
  • Bartlett MK; Department of Viticulture and Enology, University of California, Davis, California, USA.
  • Henry C; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA.
  • Jarrahi M; Department of Electrical and Computer Engineering, University of California Los Angeles, Los Angeles, California, USA.
  • John G; Department of Biology, University of Florida, Gainesville, Florida, USA.
  • Scoffoni C; Department of Biological Sciences, California State University, California, Los Angeles, USA.
  • Yardimci NT; Department of Electrical and Computer Engineering, University of California Los Angeles, Los Angeles, California, USA.
  • Sack L; Department of Ecology and Evolutionary Biology, University of California Los Angeles, Los Angeles, California, USA.
Physiol Plant ; 175(4): e13974, 2023.
Article en En | MEDLINE | ID: mdl-37403811
Intra-specific trait variation (ITV) plays a role in processes at a wide range of scales from organs to ecosystems across climate gradients. Yet, ITV remains rarely quantified for many ecophysiological traits typically assessed for species means, such as pressure volume (PV) curve parameters including osmotic potential at full turgor and modulus of elasticity, which are important in plant water relations. We defined a baseline "reference ITV" (ITVref ) as the variation among fully exposed, mature sun leaves of replicate individuals of a given species grown in similar, well-watered conditions, representing the conservative sampling design commonly used for species-level ecophysiological traits. We hypothesized that PV parameters would show low ITVref relative to other leaf morphological traits, and that their intraspecific relationships would be similar to those previously established across species and proposed to arise from biophysical constraints. In a database of novel and published PV curves and additional leaf structural traits for 50 diverse species, we found low ITVref for PV parameters relative to other morphological traits, and strong intraspecific relationships among PV traits. Simulation modeling showed that conservative ITVref enables the use of species-mean PV parameters for scaling up from spectroscopic measurements of leaf water content to enable sensing of leaf water potential.
Asunto(s)

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ecosistema / Hojas de la Planta Límite: Humans Idioma: En Revista: Physiol Plant Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Dinamarca

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Ecosistema / Hojas de la Planta Límite: Humans Idioma: En Revista: Physiol Plant Año: 2023 Tipo del documento: Article País de afiliación: Estados Unidos Pais de publicación: Dinamarca