2-Acetyl-1-pyrroline augmentation in scented indica rice (Oryza sativa L.) varieties through Δ(1)-pyrroline-5-carboxylate synthetase (P5CS) gene transformation.

2-Acetyl-1-pyrroline (2AP) has been identified as a principal aroma compound in scented rice varieties. Δ(1)-Pyrroline-5-carboxylate synthetase (P5CS) gene is reported to regulate the proline synthesis in plants and acts as the precursor of 2AP. Two scented indica rice varieties, namely Ambemohar 157 and Indrayani, were subjected to Agrobacterium tumefaciens-mediated genetic transformation containing P5CS gene.

Mechanism of 2-acetyl-1-pyrroline biosynthesis in Bassia latifolia Roxb. flowers.

The flowers of Bassia latifolia are known to contain 2-acetyl-1-pyrroline (2AP), the compound responsible for pleasant aroma in basmati and other scented rice. Four growth stages of Bassia flowers were identified and 2AP contents were analysed in each stage. It was found that 2AP (3.