"P(1P05ME793)" . "4"^^ . . . "Dynamic changes in root hydraulic properties in response to nitrate availability"@en . . "58" . "418376" . . . . "1"^^ . "Zwieniecki, Maciej" . "RIV/00216224:14310/07:00022982" . "Gloser, V\u00EDt" . "Holbrook, Michelle" . . "We explored in detail changes in root hydraulic resistance in response to alterations in nitrate supply as a potential mechanism that allows plants to respond rapidly to changes in their environment. Sunflower (Helianthus anuus cv. Holiday) plants grown in hydroponics with limited nitrate availability served as our model. The response was rapid, with a decrease of about 20% occurring within the first hour after addition of 5mM nitrate. We also showed that the magnitude of this effect was dependent on nitrate concentration. The change in root hydraulic resistance was largely reversible, although the temporal dynamics of the response to nitrate addition versus nitrate withdrawal differed, raising the possibility that the underlying mechanisms may also differ. We present evidence that the observed changes in root hydraulic properties, presumably due to changes in the activity of aquaporins, are linked with a reduction in nitrate concentration in root cells." . . . "7" . . "[1D7B45DC0FAA]" . "Dynamic changes in root hydraulic properties in response to nitrate availability"@en . "Dynamic changes in root hydraulic properties in response to nitrate availability" . . "GB - Spojen\u00E9 kr\u00E1lovstv\u00ED Velk\u00E9 Brit\u00E1nie a Severn\u00EDho Irska" . "We explored in detail changes in root hydraulic resistance in response to alterations in nitrate supply as a potential mechanism that allows plants to respond rapidly to changes in their environment. Sunflower (Helianthus anuus cv. Holiday) plants grown in hydroponics with limited nitrate availability served as our model. The response was rapid, with a decrease of about 20% occurring within the first hour after addition of 5mM nitrate. We also showed that the magnitude of this effect was dependent on nitrate concentration. The change in root hydraulic resistance was largely reversible, although the temporal dynamics of the response to nitrate addition versus nitrate withdrawal differed, raising the possibility that the underlying mechanisms may also differ. We present evidence that the observed changes in root hydraulic properties, presumably due to changes in the activity of aquaporins, are linked with a reduction in nitrate concentration in root cells."@en . "0022-0957" . . "RIV/00216224:14310/07:00022982!RIV10-MSM-14310___" . . "Dynamic changes in root hydraulic properties in response to nitrate availability" . "7"^^ . "Journal of Experimental Botany" . . . "Orians, Colin" . "14310" . "hydraulic resistance; nitrate; Helianthus anuus"@en .