1.5.1.9 additional information C-hordein suppression alters the enzyme activity differentially in different developmental stages, the extent varies among the transgenic lines, overview 743526 1.5.1.9 up the enzymes LKR/SDH and AASADH are co-upregulated at the transcriptional level by exogenously applied lysine in plants, animals, and bacteria 763097 1.5.1.9 up the enzymes LKR/SDH and AASADH are co-upregulated at the transcriptional level by exogenously applied lysine in plants, animals, and bacteria. Hyperosmotic treatment of rapeseed leaf disks induces an increase in LKR/SDH transcript abundance and enzymatic activity, which correlates with decreased levels of free lysine and increased levels of pipecolate. The LKR/SDH activity and pipecolate concentration decrease with the return of the leaf disks to hypoosmotic conditions 763097