Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/19182
Title: | Stomatal behavior following mid- or long-term exposure to high relative air humidity: A review | Authors: | Fanourakis, Dimitrios Aliniaeifard, Sasan Sellin, Arne Giday, Habtamu Körner, Oliver Rezaei Nejad, Abdolhossein Delis, Costas Bouranis, Dimitris Koubouris, Georgios Kambourakis, Emmanouil Nikoloudakis, Nikolaos Tsaniklidis, Georgios |
Major Field of Science: | Agricultural Sciences | Field Category: | Other Agricultural Sciences | Keywords: | Evaporative demand;Stomatal closing ability;Stomatal size;Transpiration;Water loss | Issue Date: | 1-Aug-2020 | Source: | Plant Physiology and Biochemistry, 2020, vol. 153, pp. 92-105 | Volume: | 153 | Start page: | 92 | End page: | 105 | Journal: | Plant Physiology and Biochemistry | Abstract: | High relative air humidity (RH ≥ 85%) is frequent in controlled environments, and not uncommon in nature. In this review, we examine the high RH effects on plants with a special focus on stomatal characters. All aspects of stomatal physiology are attenuated by elevated RH during leaf expansion (long-term) in C3 species. These include impaired opening and closing response, as well as weak diel oscillations. Consequently, the high RH-grown plants are not only vulnerable to biotic and abiotic stress, but also undergo a deregulation between CO2 uptake and water loss. Stomatal behavior of a single leaf is determined by the local microclimate during expansion, and may be different than the remaining leaves of the same plant. No effect of high RH is apparent in C4 and CAM species, while the same is expected for species with hydropassive stomatal closure. Formation of bigger stomata with larger pores is a universal response to high RH during leaf expansion, whereas the effect on stomatal density appears to be species- and leaf side-specific. Compelling evidence suggests that ABA mediates the high RH-induced stomatal malfunction, as well as the stomatal size increase. Although high RH stimulates leaf ethylene evolution, it remains elusive whether or not this contributes to stomatal malfunction. Most species lose stomatal function following mid-term (4–7 d) exposure to high RH following leaf expansion. Consequently, the regulatory role of ambient humidity on stomatal functionality is not limited to the period of leaf expansion, but holds throughout the leaf life span. | URI: | https://hdl.handle.net/20.500.14279/19182 | ISSN: | 09819428 | DOI: | 10.1016/j.plaphy.2020.05.024 | Rights: | © Elsevier | Type: | Article | Affiliation : | Hellenic Mediterranean University Giannakakis SA University of Tehran University of Tartu International Center for Biosaline Agriculture (ICBA) Institute of Vegetable and Ornamental Crops Lorestan University University of Peloponnese Agricultural University of Athens Hellenic Agricultural Organization “Demeter” Cyprus University of Technology |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
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