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- Title
Different stomatal responses of maize leaves after blue or red illumination under anoxia.
- Authors
Vavasseur, A.; Lascève, C.; Couchat, P.
- Abstract
In normal air, illumination with a low level of blue or red light (40 μmol m-2 s-1) did not induce stomatal opening in maize plantlets. In CO2-free air, 40 μmol m-2 s-1 of blue or red light promoted an enhancement in stomatal opening. At the same quantum flux, blue light was more efficient than red light and stomatal closure occurred more rapidly with a significantly shorter lag phase after blue light. Anoxia inhibited light-dependent stomatal opening, even under 320 μmol m-2 s-1 illumination. However, after 60 min of illumination with 40 μmol m-2 s-1 of blue light in anoxia, transient stomatal opening was observed when the plant was returned to darkness and normal air. This transient stomatal opening was weaker after pretreatment with red light. We conclude that a blue-light-dependent process induced under anoxia leads to stomatal opening provided oxygen is present. Possible mechanisms associated with blue-light-effect and the nature of the oxygen-consuming processes are discussed.
- Subjects
EFFECT of blue light on plants; HYPOXEMIA; PLANT physiology; CORN; STOMATA; LEAVES; EFFECT of oxygen on plants
- Publication
Plant, Cell & Environment, 1990, Vol 13, Issue 4, p389
- ISSN
0140-7791
- Publication type
Article
- DOI
10.1111/j.1365-3040.1990.tb02143.x