详细信息
松墨天牛纤维素酶的研究 Ⅲ.活体条件下金属离子对松墨天牛纤维素酶活性的影响 被引量:8
Study on the Character of Cellulase in Monochamus alternatus Ⅲ.Effect of Some Ions on the Monochamus alternatus Cellulase Activity in vivo
文献类型:期刊文献
中文题名:松墨天牛纤维素酶的研究 Ⅲ.活体条件下金属离子对松墨天牛纤维素酶活性的影响
英文题名:Study on the Character of Cellulase in Monochamus alternatus Ⅲ.Effect of Some Ions on the Monochamus alternatus Cellulase Activity in vivo
作者:王浩杰[1] 索风梅[1] 郭付新[2] 徐天森[1] 丁中文[3]
第一作者:王浩杰
机构:[1]中国林业科学研究院亚热带林业研究所;[2]河北省磁县岔口乡中学;[3]浙江省富阳市林业局
年份:2006
卷号:19
期号:4
起止页码:472-476
中文期刊名:林业科学研究
外文期刊名:Forest Research
收录:CSTPCD;;Scopus;北大核心:【北大核心2004】;CSCD:【CSCD2011_2012】;
基金:浙江省自然科学基金项目"松墨天牛消化酶演变规律和抑制效应的研究"(303318)
语种:中文
中文关键词:松墨天牛;纤维素酶活性;活体条件;金属盐离子;长期效应;短期效应
外文关键词:Monochamus alternatus; cellulase activity; in vivo; metal ions; short-term effects; long-term effects
分类号:S763.712.4
摘要:选用生产上较常用的Ag^+、Na^+、Ca^2+、Cu^2+、Mn^2+、Pb^2+、Zn^2+、Fe^2+共8种金属盐离子进行试验,研究其在活体条件下对松墨天牛纤维素酶3种组分(Cx酶、C1酶和β-葡萄糖苷酶)活性的影响。结果表明:处理24h后,Fe^2+对纤维素酶有明显的激活作用,离子浓度为1、2mmol·L^-1时Cx酶分别增加4.35%和9.76%,而其余7种离子则抑制纤维素酶的活性,尤其Ag^+、Cu^2+和Pb^2+抑制纤维素酶活性作用效果显著,低浓度时Cx酶分别下降35.20%、36.84%和32.49%;但处理7d后,参试的8种金属离子对该纤维素酶系表现为一致的抑制作用。随着离子浓度(0.1~50mmol·L^-1)的升高,金属离子的酶抑制效应加剧,Cu^2+对Cx酶的抑制作用相应为30.56%~92.55%(短期效应)和25.32%~95.78%(长期效应)。虽然Ag^+、Cu^2+和Pb^2+均有较好的抑制效果,但Cu^2+的不可替代的优越性使其在农业生产上具有很好的应用前景。
Eight common ions in practice, such as Ag^+, Na^+, Ca^2+, Cu^2+, Mn^2+, Pb^2+, Zn^2+ and Fe^2+ were selected for experiment. The short-term and long-term effects of ions on the Monochamus alternatus cellulase activity in vivo was studied. The result showed that activity reduced differently when concentration of ions were added except Fe^2+ in experiment conditions. Among the inhibiting ions, the effect of Ag^+, Cu^2+ and Pb^2+ were evident extremely. Because of heavy metal and high price, Ag^+ and Pb^2+ were limited in practice, and not suitable for cellulase inhibitor. None but Cu^2+ and Mn^2+ can be applied in practice, especially Cu^2+ have excellent applications potential.
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