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Plant and Cell Physiology, 1990, Vol. 31, No. 4 545-550
© 1990

Article

Fatty Acid Composition of Phosphatidylglycerols in Relation to Chilling Sensitivity of Woody Plants

Yasushi Tasaka, Ikuo Nishida, Shoichi Higashi, Toshio Beppu1 and Norio Murata

Department of Regulation Biology, National Institute for Basic Biology, Department of Biomechanics, Graduate University for Advanced Studies Myodaiji, Okazaki, 444 Japan
1Green Research Center Shigeicho, Innoshima, 722-21 Japan

The fatty acid composition of phosphatidylglycerol (PG) was examined in leaves of nine species of temperate-zone evergreens, seven species of tropical evergreens and seven species of temperate-zone deciduous plants. The sum of the levels of palmitate, stearate and trans-3-hexadecenoate, as a percentage of the total fatty acids in the PG, ranged from 55% to 62% in the temperate-zone evergreens, from 67% to 75% in the tropical evergreens, and from 58% to 72% in the temperate-zone deciduous plants. These findings suggest that the sum of the saturated and trans-monounsaturated molecular species, relative to the total fatty acids in PG, is correlated with the sensitivity of the leaves of evergreens to chilling, being consistent with the hypothesis proposed to explain the sensitivity to chilling of leaves of herbaceous plants.

(Received December 8, 1989; Accepted March 23, 1990)
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