Regulation of proline accumulation and its molecular and physiological functions in stress defence
The accumulation of proline is a conserved response of plants to abiotic stress conditions. Moreover, the activation of proline metabolism takes place during the plant response to some pathogens. Although these responses are well documented, the molecular and physiological functions of proline accumulation under stress are still a matter of debate. The biochemical pathways that lead to proline accumulation and its functions in regulating development are described in the cognate chapter “Proline Metabolism and its Functions in Development”.