On the functioning of stomates in Funaria.
by Garner D., Paolillo D. J. (1973)
Dorothy L. B. Garner
Dominick J. Paolillo, Jr.
in Bryologist, 76: 423–427. – DOI: 10.2307/3241726 –
The stomates in sporophytes of Funaria hygrometrica open during the 4th day of capsule expansion, under greenhouse conditions. From the 5th through the 10th days after initial capsule expansion all stomates respond to darkness by closing.
The stomates can be reopened by light and closed by the application of abscisic acid.
We conclude that at this stage of capsule development the behavior of stomates in Funaria parallels the behavior of stomates in flowering plants.
The responsiveness of stomates to environmental stimuli declines as the capsule ripens, and in the late stages of ripening about half of the stomates remain open in the light and in the dark.