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Stomatal Responses to Light, CO2, and Mesophyll Tissue in Vicia faba and Kalanchoë fedtschenkoi

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Title: Stomatal Responses to Light, CO2, and Mesophyll Tissue in Vicia faba and Kalanchoë fedtschenkoi
Authors: Mauro G. Santos, Phillip A. Davey, Tanja A. Hofmann, Anne Borland, James Hartwell, Tracy Lawson
Source: Frontiers in Plant Science, Vol 12 (2021)
Publisher Information: Frontiers Media S.A., 2021.
Publication Year: 2021
Collection: LCC:Plant culture
Subject Terms: stomata, CAM, mesophyll, Vicia faba, Kalanchoë fedtschenkoi, conductance, Plant culture, SB1-1110
More Details: The responses of stomatal aperture to light intensity and CO2 concentration were studied in both Vicia faba (C3) and Kalanchoë fedtschenkoi (Crassulacean acid metabolism; CAM), in material sampled from both light and dark periods. Direct comparison was made between intact leaf segments, epidermises grafted onto exposed mesophyll, and isolated epidermal peels, including transplantations between species and between diel periods. We reported the stomatal opening in response to darkness in isolated CAM peels from the light period, but not from the dark. Furthermore, we showed that C3 mesophyll has stimulated CAM stomata in transplanted peels to behave as C3 in response to light and CO2. By using peels and mesophyll from plants sampled in the dark and the light period, we provided clear evidence that CAM stomata behaved differently from C3. This might be linked to stored metabolites/ions and signalling pathway components within the guard cells, and/or a mesophyll-derived signal. Overall, our results provided evidence for both the involvement of guard cell metabolism and mesophyll signals in stomatal responses in both C3 and CAM species.
Document Type: article
File Description: electronic resource
Language: English
ISSN: 1664-462X
Relation: https://www.frontiersin.org/articles/10.3389/fpls.2021.740534/full; https://doaj.org/toc/1664-462X
DOI: 10.3389/fpls.2021.740534
Access URL: https://doaj.org/article/2717d3b753b149dba31adb4be1f26312
Accession Number: edsdoj.2717d3b753b149dba31adb4be1f26312
Database: Directory of Open Access Journals
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  Data: Stomatal Responses to Light, CO2, and Mesophyll Tissue in Vicia faba and Kalanchoë fedtschenkoi
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  Data: <searchLink fieldCode="AR" term="%22Mauro+G%2E+Santos%22">Mauro G. Santos</searchLink><br /><searchLink fieldCode="AR" term="%22Phillip+A%2E+Davey%22">Phillip A. Davey</searchLink><br /><searchLink fieldCode="AR" term="%22Tanja+A%2E+Hofmann%22">Tanja A. Hofmann</searchLink><br /><searchLink fieldCode="AR" term="%22Anne+Borland%22">Anne Borland</searchLink><br /><searchLink fieldCode="AR" term="%22James+Hartwell%22">James Hartwell</searchLink><br /><searchLink fieldCode="AR" term="%22Tracy+Lawson%22">Tracy Lawson</searchLink>
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  Data: Frontiers in Plant Science, Vol 12 (2021)
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  Data: The responses of stomatal aperture to light intensity and CO2 concentration were studied in both Vicia faba (C3) and Kalanchoë fedtschenkoi (Crassulacean acid metabolism; CAM), in material sampled from both light and dark periods. Direct comparison was made between intact leaf segments, epidermises grafted onto exposed mesophyll, and isolated epidermal peels, including transplantations between species and between diel periods. We reported the stomatal opening in response to darkness in isolated CAM peels from the light period, but not from the dark. Furthermore, we showed that C3 mesophyll has stimulated CAM stomata in transplanted peels to behave as C3 in response to light and CO2. By using peels and mesophyll from plants sampled in the dark and the light period, we provided clear evidence that CAM stomata behaved differently from C3. This might be linked to stored metabolites/ions and signalling pathway components within the guard cells, and/or a mesophyll-derived signal. Overall, our results provided evidence for both the involvement of guard cell metabolism and mesophyll signals in stomatal responses in both C3 and CAM species.
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        Value: 10.3389/fpls.2021.740534
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      – Text: English
    Subjects:
      – SubjectFull: stomata
        Type: general
      – SubjectFull: CAM
        Type: general
      – SubjectFull: mesophyll
        Type: general
      – SubjectFull: Vicia faba
        Type: general
      – SubjectFull: Kalanchoë fedtschenkoi
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      – SubjectFull: conductance
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      – SubjectFull: SB1-1110
        Type: general
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      – TitleFull: Stomatal Responses to Light, CO2, and Mesophyll Tissue in Vicia faba and Kalanchoë fedtschenkoi
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