1-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth Regulator

1-Aminocyclopropane 1-carboxylic acid (ACC) is the direct precursor of the plant hormone ethylene. ACC is synthesized from S-adenosyl-L-methionine (SAM) by ACC synthases (ACSs) and subsequently oxidized to ethylene by ACC oxidases (ACOs). Exogenous ACC application has been used as a proxy for ethyle...

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Main Authors: Joanna K. Polko, Joseph J. Kieber
Format: Article
Language:English
Published: Frontiers Media S.A. 2019-12-01
Series:Frontiers in Plant Science
Subjects:
Online Access:https://www.frontiersin.org/article/10.3389/fpls.2019.01602/full
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author Joanna K. Polko
Joseph J. Kieber
author_facet Joanna K. Polko
Joseph J. Kieber
author_sort Joanna K. Polko
collection DOAJ
description 1-Aminocyclopropane 1-carboxylic acid (ACC) is the direct precursor of the plant hormone ethylene. ACC is synthesized from S-adenosyl-L-methionine (SAM) by ACC synthases (ACSs) and subsequently oxidized to ethylene by ACC oxidases (ACOs). Exogenous ACC application has been used as a proxy for ethylene in numerous studies as it is readily converted by nearly all plant tissues to ethylene. However, in recent years, a growing body of evidence suggests that ACC plays a signaling role independent of the biosynthesis. In this review, we briefly summarize our current knowledge of ACC as an ethylene precursor, and present new findings with regards to the post-translational modifications of ACS proteins and to ACC transport. We also summarize the role of ACC in regulating plant development, and its involvement in cell wall signaling, guard mother cell division, and pathogen virulence.
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spelling doaj.art-185eb11b02e54984a350663ad5c550c82022-12-21T20:28:25ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2019-12-011010.3389/fpls.2019.016024994931-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth RegulatorJoanna K. PolkoJoseph J. Kieber1-Aminocyclopropane 1-carboxylic acid (ACC) is the direct precursor of the plant hormone ethylene. ACC is synthesized from S-adenosyl-L-methionine (SAM) by ACC synthases (ACSs) and subsequently oxidized to ethylene by ACC oxidases (ACOs). Exogenous ACC application has been used as a proxy for ethylene in numerous studies as it is readily converted by nearly all plant tissues to ethylene. However, in recent years, a growing body of evidence suggests that ACC plays a signaling role independent of the biosynthesis. In this review, we briefly summarize our current knowledge of ACC as an ethylene precursor, and present new findings with regards to the post-translational modifications of ACS proteins and to ACC transport. We also summarize the role of ACC in regulating plant development, and its involvement in cell wall signaling, guard mother cell division, and pathogen virulence.https://www.frontiersin.org/article/10.3389/fpls.2019.01602/full1-aminocyclopropane 1-carboxylic acidplant physiologyplant hormonesplant signalingethylene
spellingShingle Joanna K. Polko
Joseph J. Kieber
1-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth Regulator
Frontiers in Plant Science
1-aminocyclopropane 1-carboxylic acid
plant physiology
plant hormones
plant signaling
ethylene
title 1-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth Regulator
title_full 1-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth Regulator
title_fullStr 1-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth Regulator
title_full_unstemmed 1-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth Regulator
title_short 1-Aminocyclopropane 1-Carboxylic Acid and Its Emerging Role as an Ethylene-Independent Growth Regulator
title_sort 1 aminocyclopropane 1 carboxylic acid and its emerging role as an ethylene independent growth regulator
topic 1-aminocyclopropane 1-carboxylic acid
plant physiology
plant hormones
plant signaling
ethylene
url https://www.frontiersin.org/article/10.3389/fpls.2019.01602/full
work_keys_str_mv AT joannakpolko 1aminocyclopropane1carboxylicacidanditsemergingroleasanethyleneindependentgrowthregulator
AT josephjkieber 1aminocyclopropane1carboxylicacidanditsemergingroleasanethyleneindependentgrowthregulator