biologia plantarum

International journal on Plant Life established by Bohumil Němec in 1959

Biologia plantarum 55:716, 2011 | DOI: 10.1007/s10535-011-0174-8

Guard cells on adaxial and abaxial epidermes of Erythrina corallodendron sepals

B. Huang1, Y. Wang1, S. Huang2, S. Ma1,*
1 College of Life Science and Technology, Jinan University, Guangzhou, P.R. China
2 College of Medicine, Jinan University, Guangzhou, P.R. China

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.

Keywords: abscisic acid; cell wall elasticity; plasmolysis; stomatal movements

Received: February 26, 2010; Accepted: January 5, 2011; Published: December 1, 2011  Show citation

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Huang, B., Wang, Y., Huang, S., & Ma, S. (2011). Guard cells on adaxial and abaxial epidermes of Erythrina corallodendron sepals. Biologia plantarum, 55(4), 716. doi: 10.1007/s10535-011-0174-8
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