Stimulation of Phospholipid Biosynthesis during Frost Hardening of Winter Wheat 1
AUTOR(ES)
Willemot, Claude
RESUMO
Lipids were labeled with 33P during frost hardening of two varieties of winter wheat (Triticum aestivum), hardy Kharkov and much less hardy Champlein. The main labeled compounds were phosphatidylcholine, phosphatidylethanolamine, phosphatidylinositol, and phosphatidylglycerol. With time of incorporation the proportion of the radioactivity incorporated into the lipids increased in phosphatidylcholine, especially in Kharkov and at 1 C. During hardening, phospholipid synthesis was greatly stimulated in Kharkov, but much less in Champlein. The proportion of the phospholipids synthesized changed only little with hardening, with a trend towards an increase in phosphatidylcholine. Increased phospholipid synthesis does not seem to be a prerequisite to hardening in winter wheat. However, a high rate of phospholipid synthesis may be required to maintain frost resistance.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=541615Documentos Relacionados
- Simultaneous Inhibition of Linolenic Acid Synthesis in Winter Wheat Roots and Frost Hardening by BASF 13-338, a Derivative of Pyridazinone 1
- THE FROST-HARDENING MECHANISM OF PLANT CELLS1
- Correlation between Cold- and Drought-Induced Frost Hardiness in Winter Wheat and Rye Varieties 1
- Sulfhydryls—a new factor in frost resistance. I. Changes in SH content during frost hardening 12
- Changes in Phospholipid Composition of a Winter Wheat Cultivar during Germination at 2 C and 24 C 12