Auxin transport in leafy pea stem cuttings is partially driven by photosynthesis
Conference
·
· Plant Physiol., Suppl.; (United States)
OSTI ID:5957124
When /sup 14/C-IAA was applied to the apex of disbudded leafy pea stem cuttings (15 cm long), the movement of /sup 14/C-IAA to the base of the cuttings after 24 h was influenced by the photosynthetic rate. In the absence of photosynthesis, light did not influence /sup 14/C-IAA movement. Photosynthesis was altered by varying light, CO/sub 2/ concentration, or stomatal aperature (blocked with an antitranspirant). Radioactivity (identified by co-chromatography) was 25, 60, and 5% IAA, IAA-aspartate, and indolealdehyde respectively regardless of treatment. Adventitious root formation was reduced 50 to 95% and movement of IAA was inhibited 50 to 70% by decreasing gross photosynthesis 90 to 100%. Apparently, photosynthesis partially drives the movement of IAA from the apex to the base where roots arise. This gives a probably role of photosynthesis in rooting, because in this system virtually no rooting will take place without exogenous auxin and at least a low level of gross photosynthesis.
- Research Organization:
- Oregon State Univ., Corvallis
- OSTI ID:
- 5957124
- Report Number(s):
- CONF-8707108-
- Conference Information:
- Journal Name: Plant Physiol., Suppl.; (United States) Journal Volume: 83:4
- Country of Publication:
- United States
- Language:
- English
Similar Records
Amide-conjugated indole-3-acetic acid and adventitious root formation in mung bean cuttings
Uptake of auxins into membrane vesicles isolated from pea stems: an in vitro auxin transport system
Changes in the level of ( sup 14 C)indole-3-acetic acid and ( sup 14 C)indoleacetylaspartic acid during root formation in mung bean cuttings. [Vigna radiata]
Thesis/Dissertation
·
Tue Dec 31 23:00:00 EST 1985
·
OSTI ID:5347092
Uptake of auxins into membrane vesicles isolated from pea stems: an in vitro auxin transport system
Thesis/Dissertation
·
Mon Dec 31 23:00:00 EST 1984
·
OSTI ID:6942494
Changes in the level of ( sup 14 C)indole-3-acetic acid and ( sup 14 C)indoleacetylaspartic acid during root formation in mung bean cuttings. [Vigna radiata]
Journal Article
·
Thu Mar 31 23:00:00 EST 1988
· Plant Physiology; (USA)
·
OSTI ID:6993094
Related Subjects
551001* -- Physiological Systems-- Tracer Techniques
59 BASIC BIOLOGICAL SCIENCES
AUXINS
BACTERIA
BIOLOGICAL EFFECTS
CARBON 14 COMPOUNDS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMATOGRAPHY
ELECTROMAGNETIC RADIATION
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LEGUMINOSAE
MICROORGANISMS
OPENINGS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PISUM
PLANT GROWTH REGULATORS
PLANT STEMS
PLANTS
RADIATIONS
RHIZOBIUM
ROOTS
SEPARATION PROCESSES
STOMATA
SYNTHESIS
TRACER TECHNIQUES
TRANSLOCATION
VISIBLE RADIATION
59 BASIC BIOLOGICAL SCIENCES
AUXINS
BACTERIA
BIOLOGICAL EFFECTS
CARBON 14 COMPOUNDS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CHROMATOGRAPHY
ELECTROMAGNETIC RADIATION
ISOTOPE APPLICATIONS
LABELLED COMPOUNDS
LEGUMINOSAE
MICROORGANISMS
OPENINGS
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PISUM
PLANT GROWTH REGULATORS
PLANT STEMS
PLANTS
RADIATIONS
RHIZOBIUM
ROOTS
SEPARATION PROCESSES
STOMATA
SYNTHESIS
TRACER TECHNIQUES
TRANSLOCATION
VISIBLE RADIATION