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001-es BibID:	BIBFORM123686
035-os BibID:	(WoS)00125632720000 (Scopus)85195785562
Első szerző:	Varga Tamás (biotechnológus)
Cím:	Spring buds of European woody plants have old 14C age / Tamás Varga, Dominik Nagy, Mihály Molnár, A.J. Timothy Jull, István Futó, Zsuzsa Lisztes-Szabó
Dátum:	2024
ISSN:	2405-8440
Megjegyzések:	Trees and shrubs maintain carbon reserves to support their functions during periods when metabolic demand exceeds carbon supply, such as during the dormant season. To gain a better understanding of carbon storage and utilisation dynamics of eight woody plant species in temperate Central Europe, bud scale and leaf samples were collected to determine the radiocarbon age of fresh sprouts in trees and shrubs, at three background sites avoiding local emissions that may influence affect the observed 14C/12C ratio. The accelerator mass spectrometry-based bomb-radiocarbon approach, to determine the age of the mobilized carbon in the plant bud samples from storage, was complemented by stable carbon isotope measurements. The bomb-radiocarbon dating technique was used to determine the age of the samples, while a northern hemispheric atmosphere 14CO2 dataset was used to calibrate the radiocarbon ages of the plant samples. The youngest observed calibrated radiocarbon age of the buds was over 4 years, and the oldest was even 9 years old. There was no significant difference between the ages of bud scales and embryonal leaf laminas. Our results show that there is a considerable amount of stored older carbon in the woody stems that can be used to produce buds in spring, which is a complex mixture of stored carbon of different ages, but there is no relationship between the radiocarbon age and the stable carbon isotope composition. The observed results show that not only the tree species, but shrubs also can store and use significantly older carbon pools, the carbon storage intensity is similar for trees with trunks and short-stemmed shrubs branching directly above the ground, i.e. carbon storage starts in young twigs and continues in ageing branches.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Bomb-radiocarbon Bud Carbon pool Reserved carbon mobilization Woody plant
Megjelenés:	Heliyon. - 10 : 12 (2024), p. 1-9. -
További szerzők:	Nagy Dominik Molnár Mihály (1974-) (fizikus) Jull, A. J. Timothy (1951-) (radiocarbon scientist) Futó István (fizikus) Lisztes-Szabó Zsuzsa (1976-) (biológus)
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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