Synthesis versus degradation: directions of amino acid metabolism during Arabidopsis abiotic stress response

Plant Molecular Biology
Tatjana M Hildebrandt

Abstract

During abiotic stress low abundant amino acids are not synthesized but they accumulate due to increased protein turnover under conditions inducing carbohydrate starvation (dehydration, salt stress, darkness) and are degraded. Metabolic adaptation is crucial for abiotic stress resistance in plants, and accumulation of specific amino acids as well as secondary metabolites derived from amino acid metabolism has been implicated in increased tolerance to adverse environmental conditions. The role of proline, which is synthesized during Arabidopsis stress response to act as a compatible osmolyte, has been well established. However, conclusions drawn about potential functions of other amino acids such as leucine, valine, and isoleucine are not entirely consistent. This study reevaluates published datasets with a special emphasis on changes in the free amino acid pool and transcriptional regulation of the associated anabolic and catabolic pathways. In order to gain a comprehensive overview about the general direction of amino acid metabolism under abiotic stress conditions a complete map of all currently known enzymatic steps involved in amino acid synthesis and degradation was assembled including also the initial steps leading to the ...Continue Reading

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Citations

Jan 12, 2019·Plant, Cell & Environment·Willian Batista-SilvaTatjana M Hildebrandt
Jan 5, 2020·The Plant Journal : for Cell and Molecular Biology·Abou YobiRuthie Angelovici
Jan 30, 2020·Plant, Cell & Environment·Marine SauxChristophe Bailly
Jun 1, 2020·Planta·Marcelo N do AmaralEugenia Jacira B Braga
Jul 31, 2020·Physiologia Plantarum·Sam W van Es
Sep 14, 2019·The Journal of Biological Chemistry·Andréa HemmerlinThomas J Bach
Aug 26, 2020·International Journal of Molecular Sciences·Qiushuo SongVijay Joshi
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Jun 19, 2019·BMC Plant Biology·Bahram PeivasteganMinna Pirhonen
Nov 17, 2020·Frontiers in Plant Science·Roberto MattioliMaurizio Trovato
Mar 1, 2021·Phytochemical Analysis : PCA·Songbao ZhangRong Tian
Feb 6, 2021·Journal of Experimental Botany·Johanna KrahmerKaren J Halliday
May 1, 2021·Life·Tatyana Savchenko, Konstantin Tikhonov
Jul 19, 2021·Environmental Pollution·Deepak NanjappaZoe V Finkel
Nov 17, 2020·Journal of Agricultural and Food Chemistry·Da LiJian-Liang Lu
Oct 5, 2021·Frontiers in Plant Science·Giuseppe SabbioniGiuseppe Forlani
Sep 24, 2021·Journal of Experimental Botany·Niaz Bahar ChowdhuryRajib Saha
Jun 21, 2020·Ecotoxicology and Environmental Safety·Shuqing WuYanling Wang

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Methods Mentioned

BETA
salt stress

Software Mentioned

BioCyc
MapMan
Genevestigator
Metabolomics

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