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A comparison between ethylene production, ACC and mACC contents, and hydroperoxide level in normal and habituated sugar beet calli
Author(s) -
Hagège Daniel,
Kevers Claire,
Gaspar Thomas
Publication year - 1991
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1991.tb02923.x
Subject(s) - ethylene , auxin , chemistry , callus , sugar beet , sugar , cytokinin , biochemistry , botany , horticulture , biology , catalysis , gene
In contrast to normal hormone, requiring sugar beet callus, habituated auxin‐ and cytokinin‐independent callus of the same plant produces very little ethylene, contains less 1‐aminocyclopropane‐1‐carboxylic acid (ACC) and malonyl‐ACC (mACC), has a low capacity to convert ACC into ethylene and has lower levels of hydroperoxides. The low ethylene production is apparently controlled by the rate of ACC synthesis and conversion to mACC, as well as by the activity of the ethylene forming enzyme. The interactions between ethylene and polyamine metabolism are discussed, as well as the possible causal relation between the low level of ethylene and the low degree of differentiation of the habituated cells.