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The influence of dinitrophenol on phloem transport along the stolon ofSaxifraga sarmentosa

✍ Scribed by F. A. Qureshi; D. C. Spanner


Publisher
Springer-Verlag
Year
1973
Tongue
English
Weight
584 KB
Volume
111
Category
Article
ISSN
0032-0935

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✦ Synopsis


Dinitrophenol in concentrations of 5 • 10 -31~ applied to the centre 30 em of 60-70 cm stolons of Saxl/raga produces a strong and reversible inhibition of the phloem transport of laTCs or 14C-assimilates. There is every reason to believe that this effect is loealised in the sieve tubes; callose formation does not occur. This evidence is very difficult to reconcile with the M/inch hypothesis; it seems on the contrary to demand a theory of active pumping. * This work formed part of that submitted for the degree of Ph.D. of London University.