PMID: 9539813May 16, 1998Paper

Recessive and dominant mutations in the ethylene biosynthetic gene ACS5 of Arabidopsis confer cytokinin insensitivity and ethylene overproduction, respectively

Proceedings of the National Academy of Sciences of the United States of America
J P VogelJoseph J Kieber

Abstract

We identified a set of cytokinin-insensitive mutants by using a screen based on the ethylene-mediated triple response observed after treatment with low levels of cytokinins. One group of these mutants disrupts ACS5, a member of the Arabidopsis gene family that encodes 1-aminocyclopropane-1-carboxylate synthase, the first enzyme in ethylene biosynthesis. The ACS5 isoform is mainly responsible for the sustained rise in ethylene biosynthesis observed in response to low levels of cytokinin and appears to be regulated primarily by a posttranscriptional mechanism. Furthermore, the dominant ethylene-overproducing mutant eto2 was found to be the result of an alteration of the carboxy terminus of ACS5, suggesting that this domain acts as a negative regulator of ACS5 function.

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Citations

Jan 1, 2002·The Arabidopsis Book·Jennifer Nemhauser, Joanne Chory
Dec 18, 2007·Plant Cell Reports·Steven P Chatfield, Manish N Raizada
Jul 19, 2008·Journal of Plant Research·Chigusa YamamotoShigeo Tanaka
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Apr 15, 2003·Plant Physiology·Catharina CoenenTerri L Lomax
Sep 16, 2003·Plant Physiology·Filip VandenbusscheDominique Van Der Straeten
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Sep 29, 2011·Plant Physiology·Christian HermansDaniel R Bush
Mar 21, 2013·The Plant Cell·Gyeong Mee Yoon, Joseph J Kieber
Jul 19, 2000·The Plant Cell·N BeaudoinJ Giraudat

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