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香蕉抗寒性的研究进展 总被引：2，自引：0，他引：2
从研究手段的角度,综述香蕉抗寒性研究的方法以及目前研究的状态。 相似文献
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冻害低温下越冬甘蓝渗透调节物质的变化和作用 总被引：16，自引：0，他引：16
在自然降温过程中，3个甘蓝品种的渗透调节物质可溶性糖、可溶性蛋白、游离脯氨酸的含量发生明显变化。结果表明：随温度下降，可溶性糖含量表现出先升后降的趋势，可溶性蛋白、游离脯氨酸含量随温度下降而上升。田间自然鉴定冬冠1号冻害指数最低，抗冻性最强；冻害低温下，可溶性蛋白、游离脯氨酸含量最高。 相似文献
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Garth L. Fletcher Madonna J. King Ming H. Kao Margaret A. Shears 《Fish physiology and biochemistry》1989,6(2):121-127
Several species of marine teleosts have evolved blood plasma antifreeze polypeptides which enable them to survive in ice-laden seawater. Four distinct antifreeze protein classes differing in carbohydrate content, amino acid composition, protein sequence and secondary structure are currently known. Although all of these antifreezes are relatively small (2.6–33 kd) it was generally thought that they were excluded from the urine by a variety of glomerular mechanisms. In the present study antifreeze polypeptides were found in the bladder urine of winter flounder (Pseudopleuronectes americanus), sea raven (Hemitripterus americanus), ocean pout (Macrozoarces americanus) and Atlantic cod (Gadus morhua). Since the plasma of each of these fish contains a different antifreeze class it would appear that all four classes of antifreeze can enter the urine. The major antifreeze components in the urine of winter flounder were found to be identical to the major plasma components in terms of high performance liquid chromatography retention times and amino acid composition. It is concluded that plasma antifreeze peptides need not be chemically modified before they can enter the urine. 相似文献
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