Seasonal Acclimation of Photosynthetic Capacity in Syringa Species, Focused on S. fauriei : Enhanced Late-Season Carbon Assimilation Under Climate Change

Seasonal Acclimation of Photosynthetic Capacity in Syringa Species, Focused on S. fauriei: Enhanced Late-Season Carbon Assimilation Under Climate Change | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL Nordic Journal of Botany This is a preprint and has not been peer reviewed. Data may be preliminary. 12 May 2026 V1 Latest version Share on Seasonal Acclimation of Photosynthetic Capacity in Syringa Species, Focused on S. fauriei : Enhanced Late-Season Carbon Assimilation Under Climate Change Authors : Da Yeon Kim 0000-0001-8521-2982 [email protected] and Wan Soon Kim [email protected] Authors Info & Affiliations https://doi.org/10.22541/authorea.15003152/v1 11 views 4 downloads Contents Abstract Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract Seasonal regulation of photosynthetic capacity plays a crucial role in determining plant carbon balance under climate change, particularly in temperate deciduous species experiencing extended growing seasons. This study examined seasonal variations in the photosynthetic performance of Syringa accessions, focusing on S. fauriei. The species belonging to the northern lineage and endemic to Korea, and which is highly sensitive to temperature changes. Photosynthetic responses and gas exchange parameters, including maximum net photosynthetic rate (PNmax) and maximum carboxylation capacity (Vcmax), along with chlorophyll fluorescence traits, were analyzed from spring to autumn. Photosynthetic capacity increased progressively throughout the growing season, reaching its peak in early autumn. The elevated PNmax and Vcmax in September suggest that S. fauriei sustains active carbon assimilation later into the season than typically expected for deciduous species, which often exhibit declining photosynthetic function during senescence. This pattern aligns with recent evidence that rising temperatures delay the process of senescence and extend the period of physiological activity. Distinct seasonal strategies were observed as follows. The spring leaves exhibited conservative water use and reduced photosynthetic capacity, reflecting early-season constraints. During the summer, the leaves maximized gas exchange and photochemical efficiency under favorable conditions. Furthermore, autumn leaves demonstrated the greatest biochemical capacity for carbon fixation, despite potentially increased respiratory costs. The results demonstrate a dynamic seasonal acclimation strategy in S. fauriei, characterized by phased optimization of physiological processes that enables sustained carbon gain into late season. While such plasticity may enhance carbon assimilation under global warming conditions, it also underscores the species’ sensitivity to climatic variability. The incorporation of seasonal physiological dynamics into climate vulnerability assessments offers the potential to enhance predictions of species responses to climate change. Information & Authors Information Version history V1 Version 1 12 May 2026 Collection Nordic Journal of Botany Keywords physiology taxonomy ornamentals breeding ecology Hostas Syringas Rose spp. environmental physiology organogenesis plant community ecology landscape ecology climate change biodiversity climate change photosynthetic response plasticity seasonal variation Syringa fauriei physiology taxonomy ornamentals breeding ecology Hostas Syringas Rose spp. environmental physiology organogenesis plant community ecology landscape ecology climate change biodiversity Authors Affiliations Da Yeon Kim 0000-0001-8521-2982 [email protected] University of Seoul, Seoul, Korea (the Republic of) View all articles by this author Wan Soon Kim [email protected] View all articles by this author Metrics & Citations Metrics Article Usage 11 views 4 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Da Yeon Kim, Wan Soon Kim. Seasonal Acclimation of Photosynthetic Capacity in Syringa Species, Focused on S. fauriei : Enhanced Late-Season Carbon Assimilation Under Climate Change. Authorea . 12 May 2026. DOI: https://doi.org/10.22541/authorea.15003152/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. For more information or tips please see 'Downloading to a citation manager' in the Help menu . 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