Data Entry: Please note that the research database will be replaced by UNIverse by the end of October 2023. Please enter your data into the system Thanks

Login for users with Unibas email account...

Login for registered users without Unibas email account...

H-2-enrichment of cellulose and n-alkanes in heterotrophic plants
JournalArticle (Originalarbeit in einer wissenschaftlichen Zeitschrift)
ID 4527514
Author(s) Cormier, M. -A.; Werner, R. A.; Leuenberger, M. C.; Kahmen, A.
Author(s) at UniBasel Kahmen, Ansgar
Cormier, Marc-André
Year 2019
Title H-2-enrichment of cellulose and n-alkanes in heterotrophic plants
Volume 189
Number 2
Pages / Article-Number 365-373
Keywords Alkanes; Cellulose; Hydrogen isotopes; Plant metabolism; Parasitic plants
Mesh terms Science & TechnologyLife Sciences & BiomedicineEcologyEnvironmental Sciences & Ecology
Abstract Hydrogen (H) isotopes of plant organic compounds are rarely employed in ecological studies. If so, these values are interpreted as being indicative of the plant source and/or leaf water. Recent observations suggest, however, that variations in hydrogen isotope fractionation that occur during the biosynthesis of plant compounds (H-2-epsilon(bio)) imprint valuable metabolic information into the hydrogen isotope composition (H-2 values) of plant organic compounds. Here we show a consistent H-2-enrichment of compounds in heterotrophically growing plants across a series of autotrophic/heterotrophic plant pairs. We suggest that this is due to a higher recycling of compounds in the Calvin and tricarboxylic acid cycles in heterotrophic plants that is associated with a more complete exchange of C-bound H with the surrounding H-2-enriched foliar water. Interestingly, we found that H-2-enrichment in heterotrophic plants was larger for carbohydrates than for lipids, with an average H-2-enrichment of 76 +/- 9 parts per thousand in -cellulose and 23 +/- 23 parts per thousand in n-alkanes. We propose that this systematically larger H-2-enrichment for carbohydrates than for lipids is either due to different level of H-2-fractionation associated with heterotrophically produced NADPH, or to the potential uptake of lipids by heterotrophic plants. With the work we present here, we contribute to a better mechanistic understanding of what the biochemical principles are that couple the carbohydrate dynamics of plants to their H-2 values and hope to foster as such the application of H isotopes in plant sciences.
Publisher SPRINGER
ISSN/ISBN 0029-8549
Full Text on edoc No
Digital Object Identifier DOI 10.1007/s00442-019-04338-8
ISI-Number 000460033700008
Document type (ISI) Article

MCSS v5.8 PRO. 0.348 sec, queries - 0.000 sec ©Universität Basel  |  Impressum   |