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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Lysine Catabolism Through the Saccharopine Pathway: Enzymes and Intermediates Involved in Plant Responses to Abiotic and Biotic Stress

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Author(s):
Arruda, Paulo [1, 2, 3] ; Barreto, Pedro [1, 2, 3]
Total Authors: 2
Affiliation:
[1] Univ Estadual Campinas UNICAMP, Ctr Biol Mol & Engn Genet, Campinas - Brazil
[2] Univ Estadual Campinas UNICAMP, Inst Biol, Dept Genet Evolucao & Bioagentes, Campinas - Brazil
[3] Univ Estadual Campinas UNICAMP, Genom Climate Change Res Ctr GCCRC, Campinas - Brazil
Total Affiliations: 3
Document type: Review article
Source: FRONTIERS IN PLANT SCIENCE; v. 11, MAY 21 2020.
Web of Science Citations: 1
Abstract

The saccharopine pathway (SACPATH) involves the conversion of lysine into alpha-aminoadipate by three enzymatic reactions catalyzed by the bifunctional enzyme lysine-ketoglutarate reductase/saccharopine dehydrogenase (LKR/SDH) and the enzyme alpha-aminoadipate semialdehyde dehydrogenase (AASADH). The LKR domain condenses lysine and alpha-ketoglutarate into saccharopine, and the SDH domain hydrolyzes saccharopine to form glutamate and alpha-aminoadipate semialdehyde, the latter of which is oxidized to alpha-aminoadipate by AASADH. Glutamate can give rise to proline by the action of the enzymes Delta(1)-pyrroline-5-carboxylate synthetase (P5CS) and Delta(1)-pyrroline-5-carboxylate reductase (P5CR), while Delta(1)-piperideine-6-carboxylate the cyclic form of alpha-aminoadipate semialdehyde can be used by P5CR to produce pipecolate. The production of proline and pipecolate by the SACPATH can help plants face the damage caused by osmotic, drought, and salt stress. AASADH is a versatile enzyme that converts an array of aldehydes into carboxylates, and thus, its induction within the SACPATH would help alleviate the toxic effects of these compounds produced under stressful conditions. Pipecolate is the priming agent of N-hydroxypipecolate (NHP), the effector of systemic acquired resistance (SAR). In this review, lysine catabolism through the SACPATH is discussed in the context of abiotic stress and its potential role in the induction of the biotic stress response. (AU)

FAPESP's process: 16/23218-0 - The Genomics for Climate Change Research Center
Grantee:Edi Lúcia Sartorato
Support Opportunities: Research Grants - Research Centers in Engineering Program
FAPESP's process: 14/17634-5 - Mitochondria as a key element on stress response in plants
Grantee:Pedro Paulo Augusto Fabiano Arantes Pereira Barreto
Support Opportunities: Scholarships in Brazil - Post-Doctoral