Effect of arsenate and other inhibitors on early events during the germination of lettuce seeds (Lactuca sativa L. )

Journal Article · Mon Jan 01 04:00:00 EST 1973 · Plant Physiol.; (United States)

DOI:https://doi.org/10.1104/pp.52.2.142· OSTI ID:5091807

Speer, H L

The effect of arsenate, arsenite, 2,4-dinitrophenol, and anaerobiosis on early events in seed germination was investigated using both intact and punched seeds of lettuce (Lactuca sativa L.). It was found that punching the seed removes penetration barriers to the entrance of inhibitors without an undue loss of germination or light responses. The kinetics of the action of germination inhibitors were established by 2-hour pulse experiments. Arsenate and 2,4-dinitrophenol have very different kinetics. The inhibition of germination in punched seeds by arsenate given in conjunction with phosphate compared with the lack of inhibition of arsenate plus phosphate on the growing seedling, suggest a distinct metabolic change in the germinating embryo at some time between the onset of germination and subsequent seedling growth. 22 references, 4 figures, 2 tables.

• Research Organization: Simon Fraser Univ., Burnaby, British Columbia
• OSTI ID: 5091807
• Journal Information: Plant Physiol.; (United States), Journal Name: Plant Physiol.; (United States) Vol. 52; ISSN PLPHA
• Country of Publication: United States
• Language: English

Related Subjects

560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AROMATICS
ARSENATES
ARSENIC COMPOUNDS
BIOLOGICAL EFFECTS
DINITROPHENOL
FOOD
GERMINATION
GROWTH
HYDROXY COMPOUNDS
INHIBITION
LETTUCE
NITRO COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
PHENOLS
PLANT GROWTH
PLANTS
SEEDLINGS
SEEDS
VEGETABLES