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Biotljy

木虫 (小有名气)

斗战圣佛

[求助] 关于拟南芥TCH基因响应机械刺激的相关课题讨论

请各位高手指点一下,在一般的实验室条件下,如何实现拟南芥根的机械刺激,以及TCH基因及其编码的钙调蛋白及类似蛋白在响应其过程的作用!!!急!
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starseacow

专家顾问 (职业作家)

【答案】应助回帖

是这篇文章,方法如下

Arabidopsis roots were mechanically stimulated following three different protocols: (1) Individual epidermal cells were touched by rubbing a glass micropipette tip along the cell surface using a micromanipulator. (2) Roots were bent in the proximal elongation/mature zone. To impose a bend, the base of the root was immobilized in agarose, and the exposed part of the root was flexed with the aid of a glass capillary. (3) Vertically oriented roots immersed in agarose were grown into a barrier consisting of a piece of coverglass placed perpendicular to the root long axis

Ca2+ Regulates Reactive Oxygen Species Production and pH during Mechanosensing in Arabidopsis Roots

Gabriele B. Monshausen, Tatiana N. Bibikova, Manfred H. Weisenseel and
Simon Gilroy

The Plant Cell August 2009 vol. 21 no. 8 2341-2356
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4楼2012-09-04 23:36:36
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duandxb_1

铜虫 (初入文坛)

感谢参与,应助指数 +1
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2楼2012-09-04 10:00:36
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starseacow

专家顾问 (职业作家)

【答案】应助回帖

★ ★ ★ ★ ★
感谢参与,应助指数 +1
gyfgood: 金币+5, 很有帮助,专家意见! 2012-09-05 20:54:56
以前看过文章,研究机械刺激对根部细胞内部信号影响,直接用玻璃探针接触。目前对TCH产物功能好像还没什么进展,只能确认他们是一系列钙调蛋白,机械刺激后,植物内源钙水平发生变化,这一钙信号上调激活蛋白激酶,最终上调某些TCH表达(如TCH2,3,4,TCH1不单纯由钙信号激活),同时有报道蛋白磷酸酶对某些TCH(如TCH3负调控)。
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3楼2012-09-04 23:18:30
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