A Comparative Study on Function and Membrane Proteins of Chloroplasts of Three Species of Cephalotaxus in Late Winter

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A Comparative Study on Function and Membrane Proteins of Chloroplasts of Three Species of Cephalotaxus in Late Winter

Ma Hong, Zhang Zheng-Dong, Li Liang-Bi, Ma Gui-Zhi, Zhai Xiao-Jing, Zhou Pei-Zhen

(lnstitute of Botany, Academia Sinica. Beijing)

Received:1900-01-01 Revised:1900-01-01 Online:1986-12-18 Published:1986-12-18
Contact: Ma Hong

Abstract

Abstract:

Three species of evergreen Cephalotaxus (C. fortunei Hook. f., C. sinensis Li and

C. harringtonia cv. Fastigiata) were used as materials to study some functional properties of

chloroplasts. It is found that the oxygenevolving capacity of the chloroplasts from these plants

is inhibited but partial reaction of PS-II and effect of Mg²⁺ on energy distribution between

two photosystems are detectable during the winter. Seasonal effects on the functional properties

of chloroplasts from evergreen Cephalotaxus are similar to that of conifer chloroplasts.

The ratio between F₆₈₅, F₆₉₅ and F₇₃₅ of fluorescence emission spectra at 77°K of ch-

loroplasts is different among these three species. It is found by using SDS-PAGE that the num-

ber of polypeptide resolved from thylakoid membrane of C. harringtonia cv. Fastigiata sub-

stantially differs from that of C. fortunei Hook.f. and C. sinensis Li. The result shows that the

fluorescence emission spectrum feature and polypeptide composition of thylakoid membrane may

be used as a tool for systematics of the genus Cephalotaxus.

Key words: Cephalotaxus, Photosystem I, Photosystem II, variable fluorescence, low temperature fluorescene, chloroplast polypeptide

Ma Hong, Zhang Zheng-Dong, Li Liang-Bi, Ma Gui-Zhi, Zhai Xiao-Jing, Zhou Pei-Zhen. A Comparative Study on Function and Membrane Proteins of Chloroplasts of Three Species of Cephalotaxus in Late Winter[J]. .

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[7]	Hu Yu-Shi. Comparative Anatomy of the Leaves of Cephalotaxus (Cephalotaxaceae) [J]. , 1984, 22(4): 289-296.

A Comparative Study on Function and Membrane Proteins of Chloroplasts of Three Species of Cephalotaxus in Late Winter

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