Carbon dioxide or photosynthetically active radiation? Evaluation of the significance of individual environmental factors that control leaf stomatal development
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27710%2F25%3A10259021" target="_blank" >RIV/61989100:27710/25:10259021 - isvavai.cz</a>
Result on the web
<a href="https://www.webofscience.com/wos/woscc/full-record/WOS:001615329000001" target="_blank" >https://www.webofscience.com/wos/woscc/full-record/WOS:001615329000001</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/aob/mcaf249" target="_blank" >10.1093/aob/mcaf249</a>
Alternative languages
Result language
angličtina
Original language name
Carbon dioxide or photosynthetically active radiation? Evaluation of the significance of individual environmental factors that control leaf stomatal development
Original language description
Background and Aims Stomata are pores in the plant epidermis that regulate gas exchange by controlling CO(2 )uptake and water loss through transpiration. Stomatal conductance, which determines the rate of this gas exchange, is influenced by both the dynamic aperture of individual stomata and stomatal density (StD). It is a matter of discussion whether a single dominant factor that controls StD exists or a combination of several independent factors results in the final StD. Methods We evaluated the role of photosynthetic photon flux density (PPFD) and internal CO2 concentration (C-i). Plants of Helianthus annuus were cultivated under a gradient of PPFD in the range of 50-510 mu mol m(-2) s(-1); both cotyledons and true leaves were analysed. The independent effects of PPFD and C(i )on stomatal traits were assessed using additive linear models controlling for their physiological covariation. Results The results demonstrate that stomatal development in sunflower leaves is predominantly regulated by PPFD, not C-i. While stomatal traits in cotyledons remained largely unaffected by either PPFD or C-i, true leaves showed a clear and consistent response to light intensity. Additive linear models confirmed that only PPFD had a significant and robust effect on StD, whereas C-i showed no consistent contribution. This supports the interpretation that C-i, although physiologically coupled with PPFD, does not directly control stomatal development. Furthermore, we observed anatomical asymmetry between leaf surfaces: while both adaxial and abaxial sides responded to PPFD, the abaxial surface showed higher sensitivity, with significant effects on both StD and stomatal length. Conclusions Our findings emphasize light as the key environmental signal guiding stomatal patterning. Additionally, the results revealed varying differences in stomatal development on adaxial and abaxial sides of the leaf in response to light.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10600 - Biological sciences
Result continuities
Project
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Continuities
N - Vyzkumna aktivita podporovana z neverejnych zdroju
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Annals of Botany
ISSN
0305-7364
e-ISSN
1095-8290
Volume of the periodical
Neuveden
Issue of the periodical within the volume
November 2025
Country of publishing house
GB - UNITED KINGDOM
Number of pages
13
Pages from-to
"zatím nepřiděleno"
UT code for WoS article
001615329000001
EID of the result in the Scopus database
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