二硝基苯酚对沿楼梯草匐茎韧皮部运输的影响。

The influence of dinitrophenol on phloem transport along the stolon of Saxifraga sarmentosa.

机构信息

Botany Department, Bedford College, NW1 4NS, London, U.K..

出版信息

Planta. 1973 Mar;111(1):1-12. doi: 10.1007/BF00386729.

Abstract

Dinitrophenol in concentrations of 5×10(-3) M applied to the centre 30 cm of 60-70 cm stolons of Saxifraga produces a strong and reversible inhibition of the phloem transport of (137)Cs or (14)C-assimilates. There is every reason to believe that this effect is localised in the sieve tubes; callose formation does not occur. This evidence is very difficult to reconcile with the Münch hypothesis; it seems on the contrary to demand a theory of active pumping.

摘要

5×10(-3)M 的二硝基苯酚施加到 60-70 厘米长匐茎中心的 30 厘米处，会强烈且可逆地抑制 (137)Cs 或 (14)C 同化物在韧皮部中的运输。有充分的理由相信这种效应是局部在筛管中发生的；不会发生胼胝质的形成。这一证据与 Münch 假说极难调和；相反，它似乎需要一个主动泵的理论。