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yangcun

金虫 (小有名气)

[求助] 提取叶绿体的方法 已有1人参与

求助提取叶绿体的方法步骤或者相关的文献,最好详细些,本人不是学生物的,谢谢,真的谢谢,一点头绪都没有
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lixz11

木虫 (小有名气)

引用回帖:
2楼: Originally posted by 焃__麟 at 2014-09-11 21:59:09
我们实验室用的方法如下:
Quick Chloroplasts preparation from Arabidopsis


1-        Harvest leaves of 1-2 tray seedlings (better if seedlings were kept in dark for 12h before, to minimize starch) and co ...

您好,请问这些试剂买得还是直接试剂盒呢,什么牌子的,能否推荐一个,感激不尽!

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5楼2015-09-22 23:51:04
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焃__麟

铜虫 (初入文坛)

【答案】应助回帖

★ ★ ★ ★ ★ ★ ★ ★ ★
感谢参与,应助指数 +1
yangcun: 金币+9, ★★★很有帮助, 谢谢您的帮助,我看条件很苛刻的,零下4度,我们实验室很难达到 2014-09-12 09:07:11
我们实验室用的方法如下:
Quick Chloroplasts preparation from Arabidopsis


1-        Harvest leaves of 1-2 tray seedlings (better if seedlings were kept in dark for 12h before, to minimize starch) and collected them in chilled water. Let them in cold room for at leat 30 min.

Always work at 4°C or on ice!

2-        Grind leaves 3 times in 100 to 400 mL HB buffer, using a Waring blender homogeniser (1 time High, 5s ; 3 times Low 3s.):

3-        Filter the grindate through 2 layers of gaze  and 1 of miracloth.

4-        Centrifuge the filtrate 2 min at 2 200 rpm at 4°C, in JA-14 rotor.

5-        Resuspend the pellet in as less as possible 1x TE buffer (usually 1 ml per tube)

6-        Quantify Chlorophyll * and measure volume.

7-        Adjust volume to 50 mL with 1x TE

8-        Spin at 3 600 rpm at 4°C for 2 min in swing rotor. Carefully decant the supernatant.

9-        Resuspend the chloroplast pellet in 0.6 M sucrose in TE buffer to a concentration of 1-2 mg/mL chlorophyll

10-        Let stand for 10 min on ice and then store at –80°C.


* Chlorophyll content is measured by diluting 5-10 L of resuspended chloroplasts into 1 mL of 80% acetone. Mix well and spin for 2 min in the microfuge. Remove the supernatant and measure against a blank of 80% acetone in a quartz cuvette at 652 nm.
Chlorophyll concentration in mg/mL = OD652 x dilution factor / 36



TE buffer
Stock        Final concentration
Tricine-HCl pH 7.5        50 mM
EDTA        2 mM
DTT        2 mM



HB buffer
stock        Final concentration       
Sorbitol (182.2g/mol)        450 mM       
1 M Tricine/KOH pH 8.4        20 mM       
0.5 M EDTA pH 8.5        10 mM       
0.5 M NaHCO3        10 mM       
1 M MnCl2        1 mM
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2楼2014-09-11 21:59:09
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焃__麟

铜虫 (初入文坛)

`work at 4°C or on ice`,  不是零下,冰上操作也可以啊,你们实验室总不至于连冰都没有吧
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3楼2014-09-12 15:14:14
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yangcun

金虫 (小有名气)

引用回帖:
3楼: Originally posted by 焃__麟 at 2014-09-12 15:14:14
`work at 4°C or on ice`,  不是零下,冰上操作也可以啊,你们实验室总不至于连冰都没有吧

有的,谢谢你
幸福只是拥有幸福感而已。
4楼2014-09-15 14:54:15
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