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Proline Metabolism and Its Functions in Development and Stress Tolerance

  • Maurizio TrovatoEmail author
  • Giuseppe Forlani
  • Santiago Signorelli
  • Dietmar FunckEmail author
Chapter

Abstract

Proline takes an exceptional place among the proteinogenic amino acids by its specific accumulation in pollen and in response to multiple types of stress. Despite more than 50 years of research, the biochemical pathways of proline biosynthesis and degradation still await their complete characterization in plants. Also, the molecular and physiological functions of proline metabolism in plant development and defense against stress are not yet fully understood. This chapter focuses on the current knowledge about the biochemical pathways of proline metabolism in plants, on its tissue-specific regulation and subcellular compartmentation, and on still open questions. Furthermore, we will summarize what is known about the influence of proline metabolism on plant development under optimal growth conditions and how it may support continued development despite the impact of stress. The cognate chapter “Regulation of Proline Accumulation and Its Molecular and Physiological Functions in Stress Defense” will focus on the possible beneficial functions of proline metabolism and accumulation in the defense response against diverse stresses. With these two cohesive chapters, we aim to provide a comprehensive picture of the current knowledge and the open research questions in proline-dependent stress defense.

Keywords

Proline metabolism Gene expression Proline Plant development P5CS 

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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Biology and BiotechnologySapienza University of RomeRomeItaly
  2. 2.Department of Life Science and BiotechnologyUniversity of FerraraFerraraItaly
  3. 3.Department of Plant BiologyUniversidad de la RepúblicaMontevideoUruguay
  4. 4.Department of Biology, Division of Plant Physiology and BiochemistryUniversity of KonstanzKonstanzGermany

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