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王傲雪, 张红霞, 华子春
植物生理学通讯,2002,38(5):471~474,-0001,():
-1年11月30日
文章从铁吸收的生理生化机制出发,对铁吸收中的相关基因进行分析,进而探讨这些基因的潜在利用价值,以此来说明基因工程获得富铁植物的可行性。
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王傲雪, Aoxue Wang?, Xiaofeng Wang, Yanfang Ren, Xuemei Gong and J. Derek Bewley*
Seed Science Research (2005) 15, 219-227,-0001,():
-1年11月30日
Grains of indica rice (Oryza sativa cv. Peiza 67) exhibit an increase in endo-b-mannanase activity, mostly after the completion of germination. According to tissue blots, the initial increase occurs in association with the embryo, and possibly the scutellum, although the largest sustained increase in activity is in the peripheral regions of the endosperm. The aleurone layer, being the only living region of the endosperm, is presumably the site of synthesis and secretion of the enzyme into the non-living, starch-laden region. b-Mannosidase activity is low throughout germination and subsequent seedling growth, particularly in the endosperm regions. Its activity profile does not mimic that of endo-b-mannanase. In the intact grain, gibberellin (GA) causes a relatively small increase in endo-b-mannanase activity, while abscisic acid (ABA) causes a large decrease; this inhibition is overcome to a considerable extent when GA is supplied along with ABA. b-Mannosidase activity is little affected by either GA or ABA. Embryoless half-grains imbibed in water exhibit only a small increase in endo-b-mannanase activity with time of imbibition, showing the necessity for a stimulus from the embryo for this to occur. Incubating half-grains in the presence of GA results in a large increase in enzyme activity; ABA reduces the amount of activity compared to the water controls. GA is capable of reversing the inhibitory effect of ABA with respect to endo-b-mannanase activity. As in the intact grains, b-mannosidase activity in the half-grains is unaffected by either GA or ABA. It is concluded that the major site for the production of endo-b-mannanase activity is the aleurone layer, and this event is influenced by the presence of the embryo; in the absence of the latter, the increase in enzyme activity is stimulated by GA. b-Mannosidase activity is low throughout germination and post-germination, it is not influenced by GA and ABA, and thus its activity is not regulated in a coordinated manner with that of endo-bmannanase.
abscisic acid, aleurone layer, bmannosidase, endo-b-mannanase, gibberellin, Oryza sativa, rice
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【期刊论文】番茄衰老相关蛋白SENU3在大肠杆菌中的表达及其抗体制备
王傲雪, 赵永娟 王傲雪, 贾琪, 华子春
植物生理学通讯,2005,41(5):208~110,-0001,():
-1年11月30日
研究了SENU3蛋白表达载体的构建、大肠杆菌表达、纯化及其抗体的制备。
番茄衰老相关蛋白SENU3, 原核表达, 割胶., 电洗脱法, 多克隆抗体
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