Abstract
This study investigated guard cells on the adaxial and the abaxial epidermes during Erythrina corallodendron sepal development. On the adaxial epidermis, the morphology of guard cells was highly variable and changes in aperture induced by abscisic acid (ABA) were observed in 9.1 % stomata, while on the abaxial epidermis 86.7 % stomata responded to ABA. On the adaxial epidermis, stomata did not close even when guard cell pressure potential was reduced to zero by plasmolysis, even if fluorescein diacetate revealed that guard cells were alive. It was concluded that guard cells on the adaxial and the abaxial epidermes of sepals sensed environmental conditions differently, maybe due to different guard cell wall elasticity.
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Abbreviations
- ABA:
-
abscisic acid
- MES:
-
2-(N-morpholino) ethanesulfonic acid.
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Acknowledgements
We thank Dr. Fangli Lu for critical reading and revision in writing.
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Huang, B., Wang, Y., Huang, S. et al. Guard cells on adaxial and abaxial epidermes of Erythrina corallodendron sepals. Biol Plant 55, 716–720 (2011). https://doi.org/10.1007/s10535-011-0174-8
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DOI: https://doi.org/10.1007/s10535-011-0174-8