The effect of nitrogen on the movement of tracers down the stolon of Saxifraga sarmentosa, with some observations on the influence of light.

Abstract:

:The movement of applied (137)Cs and of naturally-assimilated (14)C down the long stolon of Saxifraga is strongly inhibited by confining a length of 10 to 30 cm of the stolon in an atmosphere of nitrogen. The inhibition is reversible, normal transport being restored after less then 4 h when the stolon is returned to air from 5 h in nitrogen. Callose formation does not seem to be involved. There is evidence that local darkness has a similar adverse effect on phloem transport.These findings are considered antagonistic to the pressure-flow hypothesis, but favourable to the active mass-flow theories.

journal_name

Planta

journal_title

Planta

authors

Qureshi FA,Spanner DC

doi

10.1007/BF00384835

subject

Has Abstract

pub_date

1973-06-01 00:00:00

pages

131-44

issue

2

eissn

0032-0935

issn

1432-2048

journal_volume

110

pub_type

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