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Browsing by Author "Ourry, A."

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Effects of nitrate pulses on BnNRT1 and BnNRT2 genes: mRNA levels and nitrate influx rates in relation to the duration of N deprivation in Brassica napus L.

Faure-Rabasse, S.; Macduff, James H.; Ourry, A.; Laine, P.; Le Deunff, E. (2002)

A de-repression mechanism based on the disappearance of ‘signals’ down-regulating N transporter activity has been proposed in the literature to explain the transient increase of NO3– uptake by the roots following N deprivation ...
Interactions between reserve mobilization and regulation of nitrate uptake during regrowth of Lolium perenne L.: putative roles of amino acids and carbohydrates

Louahlia, S.; Laine, P.; Macduff, J. H.; Ourry, A.; Humphreys, M. O.; Boucaud, J. (2008)

In most forage grass and legume species the recovery of leaf growth following severe defoliation depends on mobilization of carbon and nitrogen reserves from the remaining tissues. Unusually, Lolium perenne L. is able to ...
Nitrogen storage and remobilization in Brassica napus L. during the growth cycle: effects of methyl jasmonate on nitrate uptake, senescence, growth, and VSP accumulation

Laine, P.; Ourry, A.; Macduff, James H.; Rossato, L.; Deunff, E. Le (2002-04-25)

The role of methyl jasmonate (MeJa) in promoting senescence has been described previously in many species, but it has been questioned in monocarpic species whether induced senescence is a result of a potential death hormone ...
Nitrogen traffic during plant growth and development

Macduff, James H.; Volenec, J. J.; Ourry, A.; Gaudillere, J. P. (Springer-Verlag, Berlin, 2001-02)

This book covers all aspects of the transfer of nitrogen from the soil and air to a final resting place in the seed protein of a crop plant. It describes the physiological and molecular mechanisms of ammonium and nitrate ...
Putative role of gamma-aminobutyric acid (GABA) as a long distance signal in up-regulation of nitrate uptake in Brassica napus L.

Le Deunff, E.; Beuve, N.; Ourry, A.; Cliquet, J. B.; Rispail, Nicolas; Laine, P. (2004-06-28)

The relationship between nitrate influx, BnNrt2 nitrate transporter gene expression and amino acid composition of phloem exudate was investigated during N-deprivation (short-term experiment) and over a growth cycle (long-term ...

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