ISSN:
1432-2048
Keywords:
Lemna
;
Membrane potential
;
Phytochrome
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Light-stimulated transmembrane potential changes have been measured continuously after implantation of microelectrodes into subepidermal cells of the short-day plant Lemna paucicostata 6746. Irradiation for 5 min with white or red light caused a transient hyperpolarization. These potential changes could be suppressed with 10-6 M DCMU. Irradiation of DCMU-inhibited plants with far-red light for 5 min hyperpolarized the membrane potential, which thereafter was not changed by further far-red application. Consecutive red light irradiation for 5 min depolarized the membrane potential. The red/far-red reversibility of the potential changes (which could be repeated several times with a single plant) suggests the participation of phytochrome.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00391169
