Effects of Phosphate Deprivation on the Lipid Composition of Wheat Shoots

Abstract

Abstract: PG is the sole phospholipid in thylakoid membranes. Under phosphate deprivation conditions, the lipid composition of wheat (Triticum aestivum) shoot obviously changed by decreasing the relative proportion of PG. In addition, the increase of SQDG and DGDG were also observed. Although the decrease of PG was up to 49%, the photosynthesis characters and the amximal efficiency of PSⅡ photochemistry of shoot grown in phosphate-deficient conditions were similar to those of controls. These results suggested that the decrease of PG could be substituted for the increase of SQDG and accordingly kept normal photosynthesis. On the other hand, effects of phosphate deprivation on the composition of fatty acid of MGDG, DGDG, SQDG and PG were slight.

CLC Number:

Q945.11

Wang Haiying, Zhang Hongmei. Effects of Phosphate Deprivation on the Lipid Composition of Wheat Shoots[J]. Chinese Agricultural Science Bulletin, 2007, 23(6): 327-327.

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