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旨在探究三七地上茎积累花色苷对其抗寒性的效应。研究了冰水模拟低温胁迫下三七一年生紫、绿地上茎植株叶片可溶性蛋白质和丙二醛(MDA)含量及抗氧化酶比活力。结果表明,在冰水模拟低温胁迫下,紫、绿地上茎植株叶片的可溶性蛋白质含量和过氧化氢酶(CAT)比活力及绿地上茎植株叶片的MDA含量均上升,紫、绿茎植株叶片的过氧化物酶(POD)和超氧化物歧化酶(SOD)比活力及紫茎植株叶片的MDA含量均下降,且紫茎叶片可溶性蛋白质含量和CAT比活力的升幅及绿茎叶片POD和SOD比活力的降幅均更大;在冰水处理结束时,紫茎植株叶片的可溶性蛋白质含量、POD和SOD的比活力均高于绿茎的,但CAT比活力和MDA含量略低于绿茎的。但是,紫、绿茎植株叶片的可溶性蛋白质和MDA含量及抗氧化酶比活力的差异均未达到显著水平。因此,三七地上茎积累花色苷利于其抗寒。
The purpose of this study was to investigate the effect of anthocyanins accumulation in the aerial shoots of Panax notoginseng on cold resistance. The ice water was used to simulate the soluble protein and malondialdehyde (MDA) content and the antioxidant enzyme activities of the stems of purple and green stems of 37-year-old perennials under low temperature stress. The results showed that the soluble protein content and catalase (CAT) activity and the MDA content of the leaves of the stems of purple and green plants increased under the simulated ice cold water stress. The specific activities of POD and SOD and the content of MDA in the leaves of P. purpurea decreased, and the increase of soluble protein and CAT activity and the changes of POD and SOD The specific activity of POD and SOD were higher than that of green stem at the end of ice water treatment, but the specific activity and MDA content of CAT were slightly lower than that of green stem . However, the soluble protein and MDA content and the specific activities of antioxidant enzymes in leaves of purple and green stems did not reach significant levels. Therefore, the accumulation of anthocyanins in the aerial stem of Panax notoginseng helps it to resist cold.