外源基因在质体中的表达调控受多种因素影响。
Regulation of foreign gene expression in plastids is influenced by various factors.
结果表明，外源基因转化球孢白僵菌原生质体时，可以以抗除草剂基因为转化筛选标记。
The results indicated that herbicide resistant gene should be used as a selection marker gene in protoplast genetic transformation of B. bassiana.
运用实验方法区别共质体和跨细胞途径很难，对质外体和细胞到细胞途径综合作用的水分运输也缺乏有效的研究手段加以区分。
Symplast pathway and transcelluar pathway is difficultly distinguished by Experiment methods, and have no valid ways to make distinction between apoplast and cell to cell pathway.
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