ISSN:
1435-8107
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Abstract Shoot inversion induction of ethylene production was found in inverted shoots of corn, peas, soybean, sunflower, tomato, andPharbitis nil. The increases in ethylene production were found to range from two- to threefold in soybean to eightfold in corn and sunflower. The occurrence of peaks of ethylene production ranged from 16 h following shoot inversion in corn to 72 h inPharbitis. That the enhanced ethylene production was due to activation of 1-aminocyclopropane-1-carboxylic acid (ACC) synthase is supported by the finding of increased ACC content in inverted shoots of all species tested. Shoot inversion inhibition of elongation was found in inverted shoots of pea, soybean, sunflower, tomato, andPharbitis nil. This inhibition is thought to be mediated via increased ethylene production in the inverted shoots. That shoot inversion induction of ethylene is not a persistent effect is supported by the finding that ethylene synthesis could be terminated by reorientation of shoots to the upright position and could be reinitiated by the subsequent inversion of the shoots. The effects of shoot inversion on the enhancement of ethylene production and on the inhibition of elongation of the inverted shoot appear to be general phenomena.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02024928
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