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231223s2006 xx ||||| 00| ||eng c |
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
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|a Rosado, Abel
|e verfasserin
|4 aut
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|a ABA- and ethylene-mediated responses in osmotically stressed tomato are regulated by the TSS2 and TOS1 loci
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|c 2006
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 08.12.2006
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|a Date Revised 07.12.2022
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a The study of mutants impaired in the sensitivity or synthesis of abscisic acid (ABA) has become a powerful tool to analyse the interactions occurring between the ABA and ethylene signalling pathways, with potential to change the traditional view of the role of ABA as just being involved in growth inhibition. The tss2 tomato mutant, which is hypersensitive to NaCl and osmotic stress, shows enhanced growth inhibition in the presence of exogenous ABA. The tos1 tomato mutant is also hypersensitive to osmotic stress, but in contrast to tss2, shows decreased sensitivity to ABA. Surprisingly, blocking ethylene signalling suppresses the growth defect of tss2 seedlings on ABA, NaCl, and osmotic stress, but not the osmotic hypersensitivity of tos1. The ethylene production of tss2 seedlings is increased compared with that of control seedlings under osmotic stress. In addition, the tss2 plants are hypersensitive to root growth inhibition by the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC). This suggests that, in addition to ABA regulation, TSS2 acts as a negative regulator of endogenous ethylene accumulation. As previously shown in Arabidopsis, it is shown here that extensive cross-talk occurs between the ABA and ethylene signalling pathways in tomato and that the TSS2 and TOS1 loci appear as regulators of this cross-talk
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Amino Acids, Cyclic
|2 NLM
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|a Ethylenes
|2 NLM
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|a Plant Growth Regulators
|2 NLM
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|a 1-aminocyclopropane-1-carboxylic acid
|2 NLM
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|2 NLM
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|a Sodium Chloride
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|2 NLM
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| 650 |
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|a Abscisic Acid
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| 650 |
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|2 NLM
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| 650 |
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|a ethylene
|2 NLM
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| 650 |
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|a 91GW059KN7
|2 NLM
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| 700 |
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|a Amaya, Iraida
|e verfasserin
|4 aut
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| 700 |
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|a Valpuesta, Victoriano
|e verfasserin
|4 aut
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| 700 |
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|a Cuartero, Jesús
|e verfasserin
|4 aut
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| 700 |
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|a Botella, Miguel A
|e verfasserin
|4 aut
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| 700 |
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|a Borsani, Omar
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 57(2006), 12 vom: 07., Seite 3327-35
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|x 1460-2431
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|g volume:57
|g year:2006
|g number:12
|g day:07
|g pages:3327-35
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