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Proline accumulation in plants: a review

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Abstract

Proline (Pro) accumulation is a common physiological response in many plants in response to a wide range of biotic and abiotic stresses. Controversy has surrounded the possible role(s) of proline accumulation. In this review, knowledge on the regulation of Pro metabolism during development and stress, results of genetic manipulation of Pro metabolism and current debate on Pro toxicity in plants are presented.

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Abbreviations

ABA:

Abscissic acid

ABRE:

ABA responsive element

AS:

Antisense

At:

Arabidopsis thaliana

GFP:

Green fluorescent protein

GSA:

Glutamate semialdehyde

Nat-siRNAs:

Natural silencing RNA

PPP:

Pentose phosphate pathway

Pro:

Proline

PDH:

Pro dehydrogenase

P5C:

Pyrroline-5-carboxylate

P5CDH:

P5C dehydrogenase

P5CR:

P5C reductase

P5CS:

P5C synthase

RNAi:

RNA interference

ROS:

Reactive oxygen species

UTR:

Untranslated region.

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Acknowledgments

The authors thank the Belgian Science Policy for financial support (project PAIVI/33, return grant of C.H).

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  1. Laboratoire de Physiologie et de Génétique moléculaire des Plantes, Université Libre de Bruxelles, Campus Plaine—CP242, Bd du Triomphe, 1050, Brussels, Belgium

    Nathalie Verbruggen & Christian Hermans

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  1. Nathalie Verbruggen
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  2. Christian Hermans
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Correspondence to Nathalie Verbruggen.

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Verbruggen, N., Hermans, C. Proline accumulation in plants: a review. Amino Acids 35, 753–759 (2008). https://doi.org/10.1007/s00726-008-0061-6

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  • DOI: https://doi.org/10.1007/s00726-008-0061-6

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