Phytochrome: Membranes as Possible Sites of Primary Action

Abstract

INTRODUCTION 174 PHYTOCHROME LOCALIZATION ... .. . . . . . . . . . . ... ... ... . . . . . . .. . .. ... . .. . . .. .. . .. ... . . . . . ... . . .. .. ... .. ......... . 175 Physiological Localization ........ . . ... ..... ... ... ..... . .. . ... 175 Spectrophotometric Localization . . .. ...... .. ....... .... .... .... ........ 175 Immunocytochemical Localization ......... ... ..... .... ......... ........ ........ 176 Cell Fractionation ... .. . . ... ... ... ...... ... .. ......... .... ......... .. ... .. ... .. ... ... ... . 177 PHYTOCHROME ASSOCIATION WITH CELLULAR CONSTITUENTS 179 In Vivo Binding..... .. ..... . . .. .. .. .. . . . . . . . . . . . . . ... .. . . . .. ... ... .. .. .. . . . . . . . . . . . . . .. . . . 179 In Vitro Binding ..... .... 181 PHYTOCHROME ASSOCIATION AT THE MOLECULAR LEVEL 181 Lipids. . ......... .. . .. . .. . . . . . . . . . . . . . . . . . . . . . . . . . . . 181 Proteins ..... 182