Is Phloem Transport Due to a Hydrostatic Pressure Gradient? Supporting Evidence From Pressure Chamber Experiments
Keyword(s):
A pressure chamber was used to increase suddenly the hydrostatic pressure in the upper shoot of a Phaseolus vulgaris plant while observing phloem transport of 11C-labelled photoassimilate. Phloem transport in the stem towards the chamber stopped immediately when pressure was applied and then recovered within about 5 min. If the pressure was then released, flow increased again. The results support the hypothesis that flow of photoassimilate in the stem phloem was driven by a hydrostatic pressure gradient.
1995 ◽
Vol 268
(6)
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pp. C1450-C1459
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1986 ◽
Vol 6
(5)
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pp. 546-552
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2003 ◽
Vol 60
(18)
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pp. 2249-2266
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1970 ◽
Vol 62
(2-3)
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pp. 375-383
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1997 ◽
Vol 119
(3)
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pp. 700-706
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2018 ◽
Vol 37
(6)
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pp. 794-796
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