Phytochrome-controlled Nyctinasty in Albizzia julibrissin: III. Interactions between an Endogenous Rhythm and Phytochrome in Control of Potassium Flux and Leaflet Movement 1
AUTOR(ES)
Satter, Ruth L.
RESUMO
Prolonged irradiation during appropriate parts of the diurnal cycle promotes the opening of Albizzia julibrissin leaflets. Leaflets also open without illumination, but such opening starts later and is slower and less complete. Opening in the dark is accompanied by lower potassium efflux from dorsal pulvinule motor cells but equal or greater potassium movement into ventral motor cells than occurs during opening in the light. Far red-absorbing phytochrome inhibits opening in the dark, indicating that its action is similar during endogenously controlled opening and nyctinastic closure; i.e., a high far redabsorbing phytochrome level is associated with low potassium content in ventral motor cells, high potassium content in dorsal motor cells, and a small angle between leaflets.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=396939Documentos Relacionados
- Phytochrome-controlled Nyctinasty in Albizzia julibrissin: IV. Auxin Effects on Leaflet Movement and K Flux 1
- Phytochrome-controlled Nyctinasty in Albizzia julibrissin: V. Evidence against Acetylcholine Participation 1
- Rhythmic Leaflet Movement in Albizzia julibrissin: Effect of Electrolytes and Temperature Alteration 1
- Phytochrome-controlled Leaf Unrolling and Protein Synthesis 1
- Effect of Vanadate on Rhythmic Leaflet Movement in Albizzia Julibrissin1