Výsledky vyhledávání - "Leslie R. Saker"

Ionic and pH signalling from roots to shoots of flooded tomato plants in relation to stomatal closure

Autor: Leslie R. Saker, Michael B. Jackson, Franciszek Janowiak, Mark A. Else, Carol M. Crisp

Publikováno v: Plant and Soil. 253:103-113

Soil flooding damages shoot systems by inhibiting root functioning. An example is the inhibition of water uptake brought about by decreased root hydraulic conductance. The extent of any resulting foliar dehydration this causes is limited by partial s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::616fddcb66e36e0965c9cf7c365fad30
https://doi.org/10.1023/a:1024588532535

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Rapid disruption of nitrogen metabolism and nitrate transport in spinach plants deprived of sulphate

Autor: Ian M. Prosser, Judith V. Purves, Leslie R. Saker, David T. Clarkson

Publikováno v: Journal of Experimental Botany. 52:113-121

Hydroponically grown spinach plants were deprived of an external source of sulphate after an initial period when the S-supply was sufficient. The time-course of events following this treatment was monitored. The first responses were found in the upta

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b6aae87d435e57dff19d5654d28d2c3d
https://doi.org/10.1093/jexbot/52.354.113

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[Untitled]

Autor: David T. Clarkson, Judith V. Purves, Geraldine Van Rijt, Rob A. M. Welschen, Leslie R. Saker, Hans Lambers, Ingeborg Scheurwater

Publikováno v: Plant and Soil. 215:123-134

In this paper we address the question why slow-growing grass species appear to take up nitrate with greater respiratory costs than do fast-growing grasses when all plants are grown with free access to nutrients. Specific costs for nitrate transport,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a7a9ace272101adf008fde58248339ce
https://doi.org/10.1023/a:1004559628401

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Regulation of K+Uptake and Transport to the Xylem in Barley Roots; K+Distribution Determined by Electron Probe X-ray Microanalysis of Frozen-Hydrated Cells

Autor: Leslie R. Saker, J. Webb, M. C. Drew

Publikováno v: Journal of Experimental Botany. 41:815-825

Intact roots of young barley plants were induced to transport K + to the xylem at rapid or slow rates. Roots were then rapidly frozen in liquid nitrogen and fractured in the zone 70 mm behind the root tip to give transverse faces for electron probe m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::94997715907bdf4b1f527b2894028a6f
https://doi.org/10.1093/jxb/41.7.815

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Sulphate deprivation depresses the transport of nitrogen to the xylem and the hydraulic conductivity of barley (Hordeum vulgare L.) roots

Autor: Judith V. Purves, David T. Clarkson, Leslie R. Saker, Joy M. Rooney, Jadu Lal Karmoker

Publikováno v: Planta. 185(2)

During the first 4 d after the removal of SO 4 2- from cultures of young barley plants, the net uptake of 15N-nitrate and the transport of labelled N to the shoot both decline. This occurred during a period in which there was no measurable change in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c5448f5c5f4cc2aa92b37a0fe81047dc
https://pubmed.ncbi.nlm.nih.gov/24186351

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Effects of direct drilling and ploughing on root distribution in spring barley, and on the concentrations of extractable phosphate and potassium in the upper horizons of a clay soil

Autor: Leslie R. Saker, Malcolm C. Drew

Publikováno v: Journal of the Science of Food and Agriculture. 29:201-206

A comparison was made between the effects of three consecutive years of either direct drilling or ploughing, on the distribution of extractable soil phosphate and potassium, and the distribution of roots of a spring barley crop in the upper 20 cm of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::daf35095b3740ffdd9557639a2aa722d
https://doi.org/10.1002/jsfa.2740290302

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Depression of Nitrate and Ammonium Transport in Barley Plants with Diminished Sulphate Status. Evidence of Co-regulation of Nitrogen and Sulphate Intake

Autor: Leslie R. Saker, David T. Clarkson, Judith V. Purves

Publikováno v: Journal of Experimental Botany. 40:953-963

When barley plants were grown in a solution with nitrate as the sole N-source but deprived of sulphate ( —S plants) for 1 to 5 d, the capacity for sulphate transport by the roots increased very markedly; subsequent measurement of influx using 35S-l

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5687fd623eeac5c991aa8b673249304f
https://doi.org/10.1093/jxb/40.9.953

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Sulphate influx in wheat and barley roots becomes more sensitive to specific protein-binding reagents when plants are sulphate-deficient

Autor: Leslie R. Saker, David T. Clarkson

Publikováno v: Planta. 178(2)

When young wheat (Triticum aestivum L.) or barley (Hordeum vulgare L.) plants were deprived of an external sulphate supply (-S plants), the capacity of their roots to absorb sulphate, but not phosphate or potassium, increased rapidly (derepression) s

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5177fb95b2731dab321493ee0f33cc46
https://pubmed.ncbi.nlm.nih.gov/24212755

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