Nasrulhaq-Boyce A, Mohamed M A Haji
Department of Botany, Universiti Malaya, Kuala Lumpur 59100, Malaysia.
New Phytol. 1987 Jan;105(1):81-88. doi: 10.1111/j.1469-8137.1987.tb00112.x.
A comparative study of four Malayan ferns, Christensenia aesculifolia (Bl.) Maxon, Tectaria singaporeana (Wall.) Ching, Abacopteris multilineata (Wall.) Ching and Hymenophyllum polyanthos Sw. from shady habitats and another four, Dicranopteris linearis (Burm.) Und., Lygodium scandens (L.) Sw., Blechnum orientate Linn, and Stenochlaena palustris (Burm.) Bedd. from sunlit habitats showed that the total chlorophyll content expressed on a gram fresh weight basis was greater in the shade ferns. There was little difference in the chlorophyll content between the sun and shade ferns when it was expressed on a per unit leaf area basis. The protein and protohaem content was greater in the sun ferns. Measurements of the in vitro photochemical activities of the photosystems I and II in isolated chloroplasts by means of an oxygen electrode showed higher rates in the sun ferns. As determined by spectrophotometric analysis, the photosynthetic cytochrome content from isolated chloroplasts was greater in the sun ferns. The results indicate that the sun ferns have physiological characteristics favouring greater capacity for photosynthesis. Mitochondria isolated from the sun ferns showed faster rates of electron transport using exogenous NADH as substrate.
对来自阴凉生境的四种马来亚蕨类植物进行比较研究，它们分别是 aesculifolia （Bl.） Maxon 的 Christensenia、新加坡 Tectaria （Wall.） Ching 的 Tectaria singaporeana、多线 Abacopteris （Wall.） Ching 的 Abacopteris multilineata 和多花膜蕨 Hymenophyllum polyanthos Sw.，以及来自阳光充足生境的另外四种蕨类植物，分别是线羽蕨 Dicranopteris linearis （Burm.） Und.、藤蕨 Lygodium scandens （L.） Sw.、东方乌毛蕨 Blechnum orientate Linn 和沼生乌毛蕨 Stenochlaena palustris （Burm.） Bedd.。结果表明，以每克鲜重计算，阴凉处蕨类植物的总叶绿素含量更高。以单位叶面积计算时，喜阳蕨类植物和喜阴蕨类植物的叶绿素含量差异不大。喜阳蕨类植物的蛋白质和原血红素含量更高。通过氧电极对分离叶绿体中光系统 I 和 II 的体外光化学活性进行测量，结果显示喜阳蕨类植物的速率更高。通过分光光度分析确定，分离叶绿体中的光合细胞色素含量在喜阳蕨类植物中更高。结果表明，喜阳蕨类植物具有有利于光合作用能力更强的生理特征。从喜阳蕨类植物中分离出的线粒体，以外源 NADH 作为底物时，电子传递速率更快。
