Occurrence and stress response of N-methylproline compounds in Tamarix species.
A number of N-methylproline analogues have been found to accumulate in different species of Tamarix. These include N-methyl-L-proline (MP), trans-4-hydroxy-N-methyl-L-proline (M4HP) and trans-3-hydroxy-N-methyl-L-proline (M3HP). The three compounds appeared in all species but their relative and absolute levels depend upon species, ecotype and level of applied salt stress. A salt-conditioned ecotype of T. jordanis (Sodom) dramatically increased its accumulation of all proline analogues when subject to salt stress whereas a non-saline ecotype (Gilboa) showed little effect. The levels of M4HP and M3HP in T. meyeri increased with increasing salt stress whereas MP levels remained almost constant.
Jones
Graham P
GP
School of Agriculture and Wine, University of Adelaide, PMB 1, Glen Osmond, S.A. 5064, Australia. graham.jones@adelaide.edu.au
Naidu
Bodapati P
BP
Waisel
Yoav
Y
Solomon
Aaron
A
Paleg
Leslie G
LG
D002712:Chlorides / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D008968:Molecular Conformation; D011392:Proline / Q000031:analogs & derivatives* / Q000737:chemistry*; D012964:Sodium / Q000737:chemistry; D013045:Species Specificity; D032363:Tamaricaceae / Q000737:chemistry* / Q000254:growth & development
C509447:3-hydroxy-N-methylproline; C509448:4-hydroxy-N-methylproline; D002712:Chlorides; C509449:N-methylproline; D011392:Proline; D012964:Sodium