长春花外植体中的生长素运输。
Auxin transport in explants of coleus.
机构信息
Laboratorium voor Tuinbouwplantenteelt der Landbouwhogeschool, Wageningen, The Netherlands.
出版信息
Plant Physiol. 1966 Jan;41(1):83-6. doi: 10.1104/pp.41.1.83.
alpha-Naphthaleneacetic acid-C(14), labeled in the carboxyl group, was applied in blocks of agar to the distal and to the proximal (either apical or basal) ends of explants of Coleus. The radioactivity in receiver blocks at the opposite ends was measured. Acropetal transport was slight, only 4% of the basipetal transport.Translocation of NAA-C(14) was polar in basipetal direction. Only 1.4% of the radioactivity lost from donor blocks at the apical position reached the receiver blocks; the greatest part remained in the tissue and was immobilized there. All activity found in receiver blocks at the basal end appeared to be still in the form of NAA. There were no differences between petiole tissue and stem tissue, so far as the transport of NAA is concerned.
α-萘乙酸 -C（14），在羧基上标记，被应用于琼脂块中，放置于离体培养物的远端和近端（顶端或基端）。在相对端的接收器块中测量放射性。向顶运输很轻微，只有向基运输的 4%。NAA-C（14）的向基运输是极性的。只有从顶端供体块丢失的放射性的 1.4%到达接收器块；大部分仍留在组织中并被固定在那里。在基部接收器块中发现的所有活性似乎仍然以 NAA 的形式存在。就 NAA 的运输而言，叶柄组织和茎组织之间没有差异。
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