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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1016/j.jplph.2011.05.021
|2 doi
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|a pubmed24n0701.xml
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|a (DE-627)NLM210231319
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|a (NLM)21788095
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Yu, Mengmeng
|e verfasserin
|4 aut
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|a Methyl jasmonate-induced defense responses are associated with elevation of 1-aminocyclopropane-1-carboxylate oxidase in Lycopersicon esculentum fruit
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|c 2011
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|a Text
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|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 03.05.2013
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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 Copyright © 2011 Elsevier GmbH. All rights reserved.
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|a It has been known that methyl jasmonate (MeJA) interacts with ethylene to elicit resistance. In green mature tomato fruits (Lycopersicon esculentum cv. Lichun), 0.02mM MeJA increased the activity of 1-aminocyclopropane-1-carboxylate oxidase (ACO), and consequently influenced the last step of ethylene biosynthesis. Fruits treated with a combination of 0.02 MeJA and 0.02 α-aminoisobutyric acid (AIB, a competitive inhibitor of ACO) exhibited a lower ethylene production comparing to that by 0.02mM MeJA alone. The increased activities of defense enzymes and subsequent control of disease incidence caused by Botrytis cinerea with 0.2mM MeJA treatment was impaired by AIB as well. A close relationship (P<0.05) was found between the activity alterations of ACO and that of chitinase (CHI) and β-1,3-glucanase (GLU). In addition, this study further detected the changes of gene expressions and enzyme kinetics of ACO to different concentrations of MeJA. LeACO1 was found the principal member from the ACO gene family to respond to MeJA. Accumulation of LeACO1/3/4 transcripts followed the concentration pattern of MeJA treatments, where the largest elevations were reached by 0.2mM. For kinetic analysis, K(m) values of ACO stepped up during the experiment and reached the maximums at 0.2mM MeJA with ascending concentrations of treatments. V(max) exhibited a gradual increase from 3h to 24h, and the largest induction appeared with 1.0mM MeJA. The results suggested that ACO is involved in MeJA-induced resistance in tomato, and the concentration influence of MeJA on ACO was attributable to the variation of gene transcripts and enzymatic properties
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Acetates
|2 NLM
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|a Aminoisobutyric Acids
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|a Cyclopentanes
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|a Ethylenes
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|a Oxylipins
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|a Plant Growth Regulators
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|a Plant Proteins
|2 NLM
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|a 2-aminoisobutyric acid
|2 NLM
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|a 1E7ZW41IQU
|2 NLM
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|a methyl jasmonate
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|a 900N171A0F
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|a ethylene
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|a 91GW059KN7
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|a Amino Acid Oxidoreductases
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|a EC 1.4.-
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|a 1-aminocyclopropane-1-carboxylic acid oxidase
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|a EC 1.4.3.-
|2 NLM
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|a Chitinases
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|a EC 3.2.1.14
|2 NLM
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|a Glucan 1,3-beta-Glucosidase
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|a EC 3.2.1.58
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| 700 |
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|a Shen, Lin
|e verfasserin
|4 aut
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|a Zhang, Aijun
|e verfasserin
|4 aut
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|a Sheng, Jiping
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 168(2011), 15 vom: 15. Okt., Seite 1820-7
|w (DE-627)NLM098174622
|x 1618-1328
|7 nnns
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|g volume:168
|g year:2011
|g number:15
|g day:15
|g month:10
|g pages:1820-7
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|u http://dx.doi.org/10.1016/j.jplph.2011.05.021
|3 Volltext
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|d 168
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