J Integr Plant Biol. ›› 1981, Vol. 23 ›› Issue (1): -.

• Research Articles •    

Characterization of a New Chlorophyll-Protein Complex and Studies on Some Properties of Other Chlorophyll-Containing Bands

Xu Chun-hui, Chu Zhong-xi, Zhao Fu-hong, Mao Da-zhang and Dai Yun-ling   

Abstract: 1. The chlorophyll-protein complexes of sun plant spinach and shade plants Malaxis monophyllos (L.) Sw. and Chlorophytum comosum (Thunb.) Jacques were resolved by SDS-PAGE at lower temperature (2—4 ℃). Besides 8 chlorophyll-containing bands Ⅰa, Ⅰb, Ⅰc, Ⅱa, Ⅱb, Ⅱc, Ⅲ and Ⅳ mentioned in our previous paper (Chu et al., 1980), three more small chlorophyll-containing bands were also observed. Among these small bands Ⅱa which often appeared between Ⅰc and Ⅱa looked like a oligomer of LHCP complex according to its properties in colour, absorption spectrum and fluorescence emission etc. 2. When electrophoresis was carried out at lower temperature (2—4 ℃), the quantity of free pigments (Ⅲ) was obviously lower, while the relative quantities of LHCP Ⅱa, Ⅱb and PS Ⅱ’s band (Ⅳ) were apparently higher than those carried out at higher temperature (12—15 ℃). At lower temperature three bands of Ⅰ could be resolved in shade plants M. monophyllos and C. comosum, and at higher temperature there was only one band of Ⅰ (Ⅰc). But at higher temperature three bands of Ⅰ could be resolved in sunflower. 3. The percentage of LHCP complexes of shade plant M. monophyllos in total amount of chlorophyll (57%) was obviously higher than that of sun plant spinach (43%). The percentage of complexes Ⅰ of sun plant spinach in amount of total chlorophyll (27%) was obviously higher than that of shade plant M. monophyllos (14%). The relative quantity among three bands of Ⅰ in different Plants is different. 4. The chl a/b ratio of LHCP bands of shade plants were lower than that of corresponding bands of sun plants. The chl a/b ratio of Ⅱa of M. monophyllos was 1.1, Ⅱc, 1.2; but that of Ⅱa of spinach was 1.4, Ⅱc, 1.66.

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