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2‐trans ‐ABA alcohol accumulation in the wilty tomato mutants flacca and sitiens
Author(s) -
LINFORTH R. S. T.,
BOWMAN W. R.,
GRIFFIN D. A.,
MARPLES B. A.,
TAYLOR I. B.
Publication year - 1987
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/1365-3040.ep11604117
Subject(s) - mutant , alcohol , chemistry , water stress , stereochemistry , biology , biochemistry , botany , gene
Two wilty tomato mutants, flacca and sitiens , fail to increase their endogenous ABA concentration in response to water stress. Instead, a compound accumulates which has been identified as 2‐ trans ‐ABA alcohol. Levels of this compound have been estimated for three wilty mutants and the control; both before and after water stress. When the compound was biosynthesized in the presence of 18 O 2 , one atom appeared to be incorporated into the primary alcohol group. The possible implications of this for the ABA biosynthetic pathway are discussed.