Isolation of living pollen mother cells in Brassica species and extraction of mRNA from PMCs

文献类型： 外文期刊

第一作者： Gao, MQ

作者： Gao, MQ;Li, GY;Geng, JF;Zhang, XW

作者机构：

关键词： Brassica spp.;pollen mother cell;isolation;mRNA

期刊名称：JOURNAL OF THE JAPANESE SOCIETY FOR HORTICULTURAL SCIENCE （ 影响因子：0.974； 五年影响因子：0.873 ）

ISSN： 1882-3351

年卷期： 1998 年 67 卷 6 期

页码：

收录情况： SCI

摘要： The first step of clonings of genes expressed in pollen mother cells (PMCs) is to isolate living PMCs. In the procedure of isolating PMCs from cabbage (Brassica oleracea var, capitata) and Chinese cabbage (B. campestris ssp. pekinensis), 1%similar to 30% sucrose,2%similar to 10% mannitol, CPW medium (Frearson et al., 1973) and B5 medium (Gamborg et al., 1968) were used to maintain the cell vitality. The result showed that 7% sucrose was better in maintaining the cell vitality of PMCs. Percoll gradient density centrifugation was used to separate PMCs from tetra stage microspores and unicellular microspores by two steps. The first steps, 0% / 10% percoll, can separate unicellular microspores from PMCs and tetra microspores;the second step, 0 similar to 10% / 20% percoll, could isolate PMCs from tetra microspores. The isolation of PMCs of cabbage was effective than Chinese cabbage. The 0.7mg PMCs and 3.3mg terra microspores were obtained from one gram buds. The total RNA was extracted from PMCs and tetra microspores. There were two major ribosomal RNA bands (18S rRNA and 28S rRNA) after total RNA agarose gel electrophoresis. The poly(A)+ RNA was purified from total RNA by the way of oligo(dT)cellulose affinity column chromatography.

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