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Phase transitions and thermal expansion coefficients of plant cuticles : The effects of temperature on structure and function.
Planta 1990; 182(2):186-93P

Abstract

The temperature-induced volume expansion of enzymatically isolated cuticular membranes of twelve plant species was measured. All cuticular membranes exhibited distinct second-order phase transitions in the temperature range of about 40 to 50° C. Increases in the volumes of fruit cuticles (Lycopersicon, Cucumis, Capsicum, Solanum and Malus) were fully reversible, while leaf cuticular membranes (Ficus, Hedera, Nerium, Olea, Pyrus, Picea and Citrus) underwent irreversible structural changes. Below the phase-transition temperature, volumetric expansion coefficients ranged from 0.39·10(-6) m(3)·kg(-1)·K(-1) to 0.62·10(-6) m(3)·kg(-1)·K(-1), and above from 0.60·10(6) m(3)·kg(-1)·K(\-1) to 1.41· 10(-6) m(3)·kg(-1)·K(-1). Densities of cuticles at 25° C ranged from 1020 kg·m(-3) to 1370 kg·m(-3). Expansion coefficients and phase transitions were characteristic properties of the polymer matrix as a composite material, rather than of cutin alone. It is argued that the sudden increase of water permeability above the transition temperature, is caused by an increase of disorder at the interface between the polymer matrix and the soluble cuticular lipids. Possible ecological and physiological consequences of these results for living plants are discussed.

Authors+Show Affiliations

Lehrstuhl für Botanik, Technische Universität München, Arcisstrasse 21, 2, München, Germany.No affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

24197094

Citation

Schreiber, L, and J Schönherr. "Phase Transitions and Thermal Expansion Coefficients of Plant Cuticles : the Effects of Temperature On Structure and Function." Planta, vol. 182, no. 2, 1990, pp. 186-93.
Schreiber L, Schönherr J. Phase transitions and thermal expansion coefficients of plant cuticles : The effects of temperature on structure and function. Planta. 1990;182(2):186-93.
Schreiber, L., & Schönherr, J. (1990). Phase transitions and thermal expansion coefficients of plant cuticles : The effects of temperature on structure and function. Planta, 182(2), pp. 186-93. doi:10.1007/BF00197109.
Schreiber L, Schönherr J. Phase Transitions and Thermal Expansion Coefficients of Plant Cuticles : the Effects of Temperature On Structure and Function. Planta. 1990;182(2):186-93. PubMed PMID: 24197094.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Phase transitions and thermal expansion coefficients of plant cuticles : The effects of temperature on structure and function. AU - Schreiber,L, AU - Schönherr,J, PY - 1989/12/01/received PY - 1990/03/24/accepted PY - 2013/11/8/entrez PY - 1990/9/1/pubmed PY - 1990/9/1/medline SP - 186 EP - 93 JF - Planta JO - Planta VL - 182 IS - 2 N2 - The temperature-induced volume expansion of enzymatically isolated cuticular membranes of twelve plant species was measured. All cuticular membranes exhibited distinct second-order phase transitions in the temperature range of about 40 to 50° C. Increases in the volumes of fruit cuticles (Lycopersicon, Cucumis, Capsicum, Solanum and Malus) were fully reversible, while leaf cuticular membranes (Ficus, Hedera, Nerium, Olea, Pyrus, Picea and Citrus) underwent irreversible structural changes. Below the phase-transition temperature, volumetric expansion coefficients ranged from 0.39·10(-6) m(3)·kg(-1)·K(-1) to 0.62·10(-6) m(3)·kg(-1)·K(-1), and above from 0.60·10(6) m(3)·kg(-1)·K(\-1) to 1.41· 10(-6) m(3)·kg(-1)·K(-1). Densities of cuticles at 25° C ranged from 1020 kg·m(-3) to 1370 kg·m(-3). Expansion coefficients and phase transitions were characteristic properties of the polymer matrix as a composite material, rather than of cutin alone. It is argued that the sudden increase of water permeability above the transition temperature, is caused by an increase of disorder at the interface between the polymer matrix and the soluble cuticular lipids. Possible ecological and physiological consequences of these results for living plants are discussed. SN - 0032-0935 UR - https://www.unboundmedicine.com/medline/citation/24197094/Phase_transitions_and_thermal_expansion_coefficients_of_plant_cuticles_:_The_effects_of_temperature_on_structure_and_function_ DB - PRIME DP - Unbound Medicine ER -