Paper · 1964 · Science

Turgor Pressures in Phloem: Measurements on Hevea Latex

B. R. Buttery; S. G. Boatman

3
claims
5
verbatim quotes
31
citations
2
research areas
—
Not open access

Abstract

Hydrostatic pressures in laticiferous phloem tissues of Hevea brasiliensis trees exhibit a diurnal fluctuation, with minimum values occurring during the day. Pressure decreases with increasing height up the trunk, the gradient becoming greater under conditions of rapid transpiration. Sieve-tube turgor must be controlled independently if pressure-flow is to occur in the expected direction.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 3

Observationobservedoriginal resultmeasured

Claim · model-written summary

Hevea laticiferous phloem pressure fluctuated daily, with minima during the day.

Taxon
Hevea brasiliensisHevea brasiliensise0
Organ / stage
laticiferous phloem tissuese0
Outcome
Hydrostatic pressurese0
Direction
minimum valuese0
Qualifier
during the daye0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hevea brasiliensis
Hevea brasiliensis · TaxonCheongweei Gan · CC BY-SA 4.0 · iNaturalist ↗

Verbatim

e0

“Hydrostatic pressures in laticiferous phloem tissues of Hevea brasiliensis trees exhibit a diurnal fluctuation, with minimum values occurring during the day.”

✓ located verbatim in the source · abstract, characters 0–157 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Pressure declined higher up the Hevea trunk.

Taxon
HeveaHeveat0
Organ / stage
trunke0
Outcome
Pressuree0
Direction
decreasese0
Qualifier
increasing heighte0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hevea
Hevea · Taxon · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗

Verbatim

e0

“Pressure decreases with increasing height up the trunk”

✓ located verbatim in the source · abstract, characters 158–212 · show in text ↑
t0

“Hevea Latex”

✓ located verbatim in the source · title, characters 44–55 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

The trunk pressure gradient grew under rapid transpiration.

Taxon
HeveaHeveat0
Outcome
gradiente0
Direction
greatere0
Qualifier
rapid transpiratione0

Not reportedOrgan / stageSetting

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Hevea
Hevea · Taxon · picture of the genus (one of its species)Public domain · Wikimedia Commons ↗

Verbatim

e0

“the gradient becoming greater under conditions of rapid transpiration”

✓ located verbatim in the source · abstract, characters 214–283 · show in text ↑
t0

“Hevea Latex”

✓ located verbatim in the source · title, characters 44–55 · show in text ↑