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Mol Plant. 2015 Nov 2;8(11):1563-79. doi: 10.1016/j.molp.2015.09.005. Epub 2015 Sep 15.

Amino Acid Catabolism in Plants.

Author information

1
Institut für Pflanzengenetik, Leibniz Universität Hannover, Herrenhäuser Straße 2, 30419 Hannover, Germany. Electronic address: hildebrandt@genetik.uni-hannover.de.
2
Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil.
3
Departamento de Biologia Vegetal, Universidade Federal de Viçosa, Viçosa, Minas Gerais 36570-900, Brazil. Electronic address: wlaraujo@ufv.br.
4
Institut für Pflanzengenetik, Leibniz Universität Hannover, Herrenhäuser Straße 2, 30419 Hannover, Germany.

Abstract

Amino acids have various prominent functions in plants. Besides their usage during protein biosynthesis, they also represent building blocks for several other biosynthesis pathways and play pivotal roles during signaling processes as well as in plant stress response. In general, pool sizes of the 20 amino acids differ strongly and change dynamically depending on the developmental and physiological state of the plant cell. Besides amino acid biosynthesis, which has already been investigated in great detail, the catabolism of amino acids is of central importance for adjusting their pool sizes but so far has drawn much less attention. The degradation of amino acids can also contribute substantially to the energy state of plant cells under certain physiological conditions, e.g. carbon starvation. In this review, we discuss the biological role of amino acid catabolism and summarize current knowledge on amino acid degradation pathways and their regulation in the context of plant cell physiology.

KEYWORDS:

adenosine triphosphate; amino acid catabolism; carbon starvation; energy metabolism; enzyme regulation

PMID:
26384576
DOI:
10.1016/j.molp.2015.09.005
[Indexed for MEDLINE]
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