Hydrogen isotope fractionation in carbohydrates of leaves and xylem tissues follows distinct phylogenetic patterns: a common garden experiment with 73 tree and shrub species
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Hydrogen isotope fractionation in carbohydrates of leaves and xylem tissues follows distinct phylogenetic patterns: a common garden experiment with 73 tree and shrub species. / Schuler, Philipp; Vitali, Valentina; Saurer, Matthias; Gessler, Arthur; Buchmann, Nina; Lehmann, Marco M.
in: NEW PHYTOL, Jahrgang 239, Nr. 2, 07.2023, S. 547-561.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Hydrogen isotope fractionation in carbohydrates of leaves and xylem tissues follows distinct phylogenetic patterns: a common garden experiment with 73 tree and shrub species
AU - Schuler, Philipp
AU - Vitali, Valentina
AU - Saurer, Matthias
AU - Gessler, Arthur
AU - Buchmann, Nina
AU - Lehmann, Marco M
N1 - © 2023 The Authors New Phytologist © 2023 New Phytologist Foundation.
PY - 2023/7
Y1 - 2023/7
N2 - Recent methodological advancements in determining the nonexchangeable hydrogen isotopic composition (δ2 Hne ) of plant carbohydrates make it possible to disentangle the drivers of hydrogen isotope (2 H) fractionation processes in plants. Here, we investigated the influence of phylogeny on the δ2 Hne of twig xylem cellulose and xylem water, as well as leaf sugars and leaf water, across 73 Northern Hemisphere tree and shrub species growing in a common garden. 2 H fractionation in plant carbohydrates followed distinct phylogenetic patterns, with phylogeny reflected more in the δ2 Hne of leaf sugars than in that of twig xylem cellulose. Phylogeny had no detectable influence on the δ2 Hne of twig or leaf water, showing that biochemistry, not isotopic differences in plant water, caused the observed phylogenetic pattern in carbohydrates. Angiosperms were more 2 H-enriched than gymnosperms, but substantial δ2 Hne variations also occurred at the order, family, and species levels within both clades. Differences in the strength of the phylogenetic signals in δ2 Hne of leaf sugars and twig xylem cellulose suggest that the original phylogenetic signal of autotrophic processes was altered by subsequent species-specific metabolism. Our results will help improve 2 H fractionation models for plant carbohydrates and have important consequences for dendrochronological and ecophysiological studies.
AB - Recent methodological advancements in determining the nonexchangeable hydrogen isotopic composition (δ2 Hne ) of plant carbohydrates make it possible to disentangle the drivers of hydrogen isotope (2 H) fractionation processes in plants. Here, we investigated the influence of phylogeny on the δ2 Hne of twig xylem cellulose and xylem water, as well as leaf sugars and leaf water, across 73 Northern Hemisphere tree and shrub species growing in a common garden. 2 H fractionation in plant carbohydrates followed distinct phylogenetic patterns, with phylogeny reflected more in the δ2 Hne of leaf sugars than in that of twig xylem cellulose. Phylogeny had no detectable influence on the δ2 Hne of twig or leaf water, showing that biochemistry, not isotopic differences in plant water, caused the observed phylogenetic pattern in carbohydrates. Angiosperms were more 2 H-enriched than gymnosperms, but substantial δ2 Hne variations also occurred at the order, family, and species levels within both clades. Differences in the strength of the phylogenetic signals in δ2 Hne of leaf sugars and twig xylem cellulose suggest that the original phylogenetic signal of autotrophic processes was altered by subsequent species-specific metabolism. Our results will help improve 2 H fractionation models for plant carbohydrates and have important consequences for dendrochronological and ecophysiological studies.
KW - Phylogeny
KW - Hydrogen/metabolism
KW - Oxygen Isotopes/metabolism
KW - Carbohydrates
KW - Plant Leaves/metabolism
KW - Carbon Isotopes/metabolism
KW - Cellulose/metabolism
KW - Xylem/metabolism
KW - Water/metabolism
KW - Sugars/metabolism
KW - Plants/metabolism
U2 - 10.1111/nph.18976
DO - 10.1111/nph.18976
M3 - SCORING: Journal article
C2 - 37219870
VL - 239
SP - 547
EP - 561
JO - NEW PHYTOL
JF - NEW PHYTOL
SN - 0028-646X
IS - 2
ER -