1990
DOI: 10.1105/tpc.2.6.513
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Exploiting the triple response of Arabidopsis to identify ethylene-related mutants.

Abstract: Alterations in the response of dark-grown seedlings to ethylene (the "triple response") were used to isolate a collection of ethylene-related mutants in Arabidopsis thaliana. Mutants displaying a constitutive response (eto1) were found to produce at least 40 times more ethylene than the wild type. The morphological defects in etiolated eto1-1 seedlings reverted to wild type under conditions in which ethylene biosynthesis or ethylene action were inhibited. Mutants that failed to display the apical hook in the a… Show more

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Cited by 974 publications
(564 citation statements)
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“…This senescencepromoting effect of ethephon was not due to the effect of the by-products generated during ethylene release [21 ], since the solution containing the by-products only did not cause loss of Chl content and photochemical efficiency within the same incubation time (data not shown). We have also found that 3 out of 6 delayed senescence mutants we have isolated (Oh et al, unpublished data) are allelic to one of the ethylene-insensitive mutations, ein2 [ 13]. These observations suggest that ethylene may be one of the major factors in Arabidopsis leaf senescence.…”
Section: Discussionsupporting
confidence: 50%
“…This senescencepromoting effect of ethephon was not due to the effect of the by-products generated during ethylene release [21 ], since the solution containing the by-products only did not cause loss of Chl content and photochemical efficiency within the same incubation time (data not shown). We have also found that 3 out of 6 delayed senescence mutants we have isolated (Oh et al, unpublished data) are allelic to one of the ethylene-insensitive mutations, ein2 [ 13]. These observations suggest that ethylene may be one of the major factors in Arabidopsis leaf senescence.…”
Section: Discussionsupporting
confidence: 50%
“…The two-to three-fold increase in free IAA levels observed in axrl-3 plants in the absence of any transgenes is consistent with the notion that this mutant is defective in auxin signal transduction and thus fails to feedback regulate free IAA pool levels. Ethylene-and gibberellin-insensitive mutants also display increased production of the phytohormones that they fail to perceive, indicating that sensitivity-mediated feedback control of phytohormone levels may be common [ 10,30]. Given these data it is possible that the axrl-3 mutation confers auxin resistance by decreasing auxin sensitivity or by sequestering auxin.…”
Section: Discussionmentioning
confidence: 96%
“…Analysis of mutants that fail to perceive or produce a hormone can greatly aid the elucidation of the full spectrum of a given hormone's activities [ 1,10]. However, additional insights can also be gained by analysis of mutants that overproduce the hormone [10].…”
Section: Introductionmentioning
confidence: 99%
“…A number of such mutants have been identified and characterized in Arabidopsis thaliana. Among these mutants, etrl [1 ], einl and ein2 [8] are believed to be involved in the pathway leading from perception of ethylene to physiological response. These and similar mutants have been used to examine the role of ethylene in leaf senescence [20], chitinase gene expression [15] and seed germination [9].…”
Section: Introductionmentioning
confidence: 99%