Variation in leaf flushing date influences autumnal senescence and next year's flushing date in two temperate tree species

Yongshuo S. H. Fu; Matteo Campioli; Yann VitasseHans J. De BoeckJoke Van den BergeHamada AbdElgawadHan AsardShilong PiaoGaby DeckmynIvan A. Janssens

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Variation in leaf flushing date influences autumnal senescence and next year's flushing date in two temperate tree species

机译：Variation in leaf flushing date influences autumnal senescence and next year's flushing date in two temperate tree species

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Recent temperature increases have elicited strong phenological shifts in temperate tree species, with subsequent effects on photosynthesis. Here, we assess the impact of advanced leaf flushing in a winter warming experiment on the current year's senescence and next year's leaf flushing dates in two common tree species: Quercus robur L. and Fagus sylvatica L. Results suggest that earlier leaf flushing translated into earlier senescence, thereby partially offsetting the lengthening of the growing season. Moreover, saplings that were warmed in winter-spring 2009-2010 still exhibited earlier leaf flushing in 2011, even though the saplings had been exposed to similar ambient conditions for almost 1 y. Interestingly, for both species similar trends were found in mature trees using a long-term series of phenological records gathered from various locations in Europe. We hypothesize that this longterm legacy effect is related to an advancement of the endormancy phase (chilling phase) in response to the earlier autumnal senescence. Given the importance of phenology in plant and ecosystem functioning, and the prediction of more frequent extremely warm winters, our observations and postulated underlying mechanisms should be tested in other species.

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《Proceedings of the National Academy of Sciences of the United States of America》 |2014年第20期|7355-7360|共6页
作者
Yongshuo S. H. Fu; Matteo Campioli; Yann VitasseHans J. De BoeckJoke Van den BergeHamada AbdElgawadHan AsardShilong PiaoGaby DeckmynIvan A. Janssens;
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作者单位

Research Group of Plant and Vegetation Ecology, Department of Biology, University of Antwerp, B-2610 Wilrijk, Belgium;

Institute of Botany, University of Basel, 4056 Basel, Switzerland;

Research Group of Molecular Plant Physiology and Biotechnology, Department of Biology, University of Antwerp, 2020 Antwerpen, BelgiumCollege of Urban and Environmental Sciences, Peking University, Beijing 100871, China;

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收录信息美国《科学引文索引》(SCI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类自然科学总论;
关键词
climate change; tree phenology; spring flushing; leaf senescence;

Variation in leaf flushing date influences autumnal senescence and next year's flushing date in two temperate tree species

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