The why and how of sunken stomata: does the behaviour of encrypted stomata and the leaf cuticle matter?
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12310%2F22%3A43904915" target="_blank" >RIV/60076658:12310/22:43904915 - isvavai.cz</a>
Result on the web
<a href="https://academic.oup.com/aob/article/130/3/285/6572649?login=true" target="_blank" >https://academic.oup.com/aob/article/130/3/285/6572649?login=true</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1093/aob/mcac055" target="_blank" >10.1093/aob/mcac055</a>
Alternative languages
Result language
angličtina
Original language name
The why and how of sunken stomata: does the behaviour of encrypted stomata and the leaf cuticle matter?
Original language description
Background Stomatal pores in many species are separated from the atmosphere by different anatomical obstacles produced by leaf epidermal cells, especially by sunken stomatal crypts, stomatal antechambers and/or hairs (trichomes). The evolutionary driving forces leading to sunken or 'hidden' stomata whose antechambers are filled with hairs or waxy plugs are not fully understood. The available hypothetical explanations are based mainly on mathematical modelling of water and CO2 diffusion through superficial vs. sunken stomata, and studies of comparative autecology. A better understanding of this phenomenon may result from examining the interactions between the leaf cuticle and stomata and from functional comparisons of sunken vs. superficially positioned stomata, especially when transpiration is low, for example at night or during severe drought. Scope I review recent ideas as to why stomata are hidden and test experimentally whether hidden stomata may behave differently from those not covered by epidermal structures and so are coupled more closely to the atmosphere. I also quantify the contribution of stomatal vs. cuticular transpiration at night using four species with sunken stomata and three species with superficial stomata. Conclusions Partitioning of leaf conductance in darkness (g(tw)) into stomatal and cuticular contributions revealed that stomatal conductance dominated g(tw) across all seven investigated species with antechambers with different degrees of prominence. Hidden stomata contributed, on average, less to g(tw) (approx. 70 %) than superficial stomata (approx. 80 %) and reduced their contribution dramatically with increasing g(tw). In contrast, species with superficial stomata kept their proportion in g(tw) invariant across a broad range of g(tw). Mechanisms behind the specific behaviour of hidden stomata and the multipurpose origin of sunken stomata are discussed.
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
10611 - Plant sciences, botany
Result continuities
Project
<a href="/en/project/GA18-14704S" target="_blank" >GA18-14704S: Stomata: coordination of development, evolution of CO2 sensing and carbon acquisition</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
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
130
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
16
Pages from-to
285-300
UT code for WoS article
000796682500001
EID of the result in the Scopus database
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