THE PERMEABILITY OF PHI THICKENINGS IN APPLE (PYRUS-MALUS) AND GERANIUM (PELARGONIUM-HORTORUM) ROOTS TO AN APOPLASTIC FLUORESCENT DYE TRACER
THE PERMEABILITY OF PHI THICKENINGS IN APPLE (PYRUS-MALUS) AND GERANIUM (PELARGONIUM-HORTORUM) ROOTS TO AN APOPLASTIC FLUORESCENT DYE TRACER
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DOI：
10.1139/b81-149
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发表时间：
1981-01-01
期刊：
影响因子：
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通讯作者：
WEERDENBURG, CA
中科院分区：
文献类型：
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作者：
PETERSON, CA;EMANUEL, ME;WEERDENBURG, CA
研究了苹果（Pyrus malus L.）和天竺葵（Pelargonium hortorum L.）H. Bailey）根通过用织物增白剂染料Tinopal CBS-X（二钠-4，4“-双（2-磺基苯乙烯基）联苯）处理它们来测试。染料移质外体在两个物种的根，并没有渗透到内胚层层。与此相反，染料渗透在这两种类型的根的phi增厚，表明phi增厚不起作用的质外体运输相对较小的分子的障碍。
The permeability properties of the phi thickenings in apple (Pyrus malus L.) and geranium (Pelargonium hortorum L. H. Bailey) roots were tested by treating them with a fabric brightener dye, Tinopal CBS-X (disodium-4,4''-bis(2-sulfostyryl)biphenyl). The dye moved apoplastically in the roots of both species and did not penetrate the endodermal layers. In contrast, the dye penetrated the phi thickenings in both types of roots, indicating that phi thickenings do not function as barriers to the apoplastic transport of relatively small molecules.