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Literature DB >> 24522765

Immediate phytochrome action in lettuce seeds and its interaction with gibberellins and other germination promoters.

Abstract

An immediate action of phytochrome (PFR) was found by a technique of adding subthreshold concentrations of gibberellic acid (GA3) after irradiation. It was shown that phytochrome (PFR) is active within 5 mins after its formation. The interaction between PFR, GA3 and six other gibberellins (GA1, GA4, GA5, GA7, GA9 and GA13) was synergistic. This result is interpreted to mean that PFR does not produce any of these gibberellins, at least during the first 30 mins. of its action. This conclusion was confirmed by interaction experiments in darkness using GA3 combined with the other gibberellins. A similar synergism was found between PFR and kinetin, thiourea and chloramphenicol.

Entities: Chemical Gene

Year: 1968 PMID： 24522765 DOI： 10.1007/BF00387092

Source DB: PubMed Journal: Planta ISSN： 0032-0935 Impact factor: 4.116

11 in total

1. Growth physics and water relations of red-light-induced germination in lettuce seeds : V. Promotion of elengation in the embryonic axes by gibberellins and phytochrome.

Authors: N C Carpita; M W Nabors
Journal: Planta Date: 1981-06 Impact factor: 4.116

2. Effects of inhibitors of RNA and protein synthesis on bean hypocotyl hook opening and their implications regarding phytochrome action.

Authors: B G Kang; P M Ray
Journal: Planta Date: 1969-09 Impact factor: 4.116

3. An enzyme to degrade lettuce endosperm cell walls. Appearance of a mannanase following phytochrome- and gibberellin-induced germination.

Authors: P Halmer; J D Bewley; T A Thorpe
Journal: Planta Date: 1976-01 Impact factor: 4.116

4. A distinction between the actions of abscisic acid, gibberellic acid and cytokinins in light-sensitive lettuce seed.

Authors: J D Bewley; D W Fountain
Journal: Planta Date: 1972-12 Impact factor: 4.116

5. The influence of plant growth regulators on the growth of the embryonic axes of red- and far-red-treated lettuce seeds.

Authors: N C Carpita; C W Ross; M W Nabors
Journal: Planta Date: 1979-01 Impact factor: 4.116

5 in total

Immediate phytochrome action in lettuce seeds and its interaction with gibberellins and other germination promoters.

1. Conditions Determining Effects of Far-Red and Red Irradiations on Flowering Response of Pharbitis nil.

2. Photoreversibility of Flower Initiation.

3. Interaction between Kinetin and Light on Germination of Grand Rapids Lettuce Seeds.

4. Some Effects of Phosphon on Germination Induced by Red Radiation and Gibberellic Acid in Seeds of Verbascum thapsus.

5. Action of Gibberellic Acid on Lettuce Seed Germination.

6. THE GERMINATION OF LETTUCE SEED STIMULATED BY CHEMICAL TREATMENT.

7. [Changes in gibberellin-like substances of lettuce seeds after light exposure].

8. Kinetics of growth retardant and hormone interactions in affecting cucumber hypocotyl elongation.

9. [Dependence of the gibberellin production of normal peas on the phytochrom-system].

10. Leaflet movement of Mimosa pudica L. Indicative of phytochrome action.

1. Growth physics and water relations of red-light-induced germination in lettuce seeds : V. Promotion of elengation in the embryonic axes by gibberellins and phytochrome.

2. Effects of inhibitors of RNA and protein synthesis on bean hypocotyl hook opening and their implications regarding phytochrome action.

3. An enzyme to degrade lettuce endosperm cell walls. Appearance of a mannanase following phytochrome- and gibberellin-induced germination.

4. A distinction between the actions of abscisic acid, gibberellic acid and cytokinins in light-sensitive lettuce seed.

5. The influence of plant growth regulators on the growth of the embryonic axes of red- and far-red-treated lettuce seeds.