为了研究盐渍生境对盐生植物碱茅Puccinellia china mpoensis体内部分信号分子的影响,采用不同浓度NaCl溶液处理碱茅植株,对幼苗叶片中部分信号分子及相关蛋白测定和分析。结果发现,低盐下碱茅无胁迫反应,高盐胁迫下,碱茅脱落酸(ABA)含...为了研究盐渍生境对盐生植物碱茅Puccinellia china mpoensis体内部分信号分子的影响,采用不同浓度NaCl溶液处理碱茅植株,对幼苗叶片中部分信号分子及相关蛋白测定和分析。结果发现,低盐下碱茅无胁迫反应,高盐胁迫下,碱茅脱落酸(ABA)含量升高,生长素(IAA)、赤霉素(GA)含量均下降,细胞分裂素(ZR)含量趋于稳定;碱茅NAD激酶(NADKase)活性升高,提高代谢调节能力;同时Ca2+-ATPase活性增加,是对盐胁迫引起Ca2+浓度升高而做出的胁迫反应。表明了碱茅通过胞间信号相对含量的变化,调节NADKase活性、Ca2+-ATPase活性,提高耐盐能力。展开更多
Objective To inquire into the mechanism of toxic effect of nickel sulfate (NiSO 4) on heart, liver and kidney.Methods Several groups of rats were exposed to NiSO 4 at dose of 2.5,5 0, 10.0 mg/kg through intraperitonea...Objective To inquire into the mechanism of toxic effect of nickel sulfate (NiSO 4) on heart, liver and kidney.Methods Several groups of rats were exposed to NiSO 4 at dose of 2.5,5 0, 10.0 mg/kg through intraperitoneal infection for 10 days, the cell membrane of myocardium, liver and renal tubules were prepared to assess the activity of Na +·K + ATPase, Ca 2+ ATPase with spectrophotometric assay. Results The result showed that NiSO 4 was able to inhibit obviously the activity of Na +·K + ATPase, Ca 2+ ATPase of the three kinds of cell membrane, and its inhibitiue effect was shown to be the strongest in kidney and the weakest in liver.Conclusion The damage on rat’s heart, liver and kidney by NiSO 4 could be related to the inhibitive activity of cell membrane ATPase. However, the mechanism of toxic effect of nickel sulfate on heart, liver and kidney should be studied further.展开更多
文摘为了研究盐渍生境对盐生植物碱茅Puccinellia china mpoensis体内部分信号分子的影响,采用不同浓度NaCl溶液处理碱茅植株,对幼苗叶片中部分信号分子及相关蛋白测定和分析。结果发现,低盐下碱茅无胁迫反应,高盐胁迫下,碱茅脱落酸(ABA)含量升高,生长素(IAA)、赤霉素(GA)含量均下降,细胞分裂素(ZR)含量趋于稳定;碱茅NAD激酶(NADKase)活性升高,提高代谢调节能力;同时Ca2+-ATPase活性增加,是对盐胁迫引起Ca2+浓度升高而做出的胁迫反应。表明了碱茅通过胞间信号相对含量的变化,调节NADKase活性、Ca2+-ATPase活性,提高耐盐能力。
文摘Objective To inquire into the mechanism of toxic effect of nickel sulfate (NiSO 4) on heart, liver and kidney.Methods Several groups of rats were exposed to NiSO 4 at dose of 2.5,5 0, 10.0 mg/kg through intraperitoneal infection for 10 days, the cell membrane of myocardium, liver and renal tubules were prepared to assess the activity of Na +·K + ATPase, Ca 2+ ATPase with spectrophotometric assay. Results The result showed that NiSO 4 was able to inhibit obviously the activity of Na +·K + ATPase, Ca 2+ ATPase of the three kinds of cell membrane, and its inhibitiue effect was shown to be the strongest in kidney and the weakest in liver.Conclusion The damage on rat’s heart, liver and kidney by NiSO 4 could be related to the inhibitive activity of cell membrane ATPase. However, the mechanism of toxic effect of nickel sulfate on heart, liver and kidney should be studied further.
