Detail
Article
Online article
FT
Medvik - BMC
  • Something wrong with this record ?

Depletion of carbohydrate reserves limits nitrate uptake during early regrowth in Lolium perenne L

Q. Guo, MH. Turnbull, J. Song, J. Roche, O. Novak, J. Späth, PE. Jameson, J. Love,

. 2017 ; 68 (7) : 1569-1583.

Language English Country England, Great Britain

Document type Journal Article, Research Support, Non-U.S. Gov't

Persistent link   https://www.medvik.cz/link/bmc18033950

The mechanisms linking C/N balance to N uptake and assimilation are central to plant responses to changing soil nutrient levels. Defoliation and subsequent regrowth of grasses both impact C partitioning, thereby creating a significant point of interaction with soil N availability. Using defoliation as an experimental treatment, we investigated the dynamic relationships between plant carbohydrate status and NO3--responsive uptake systems, transporter gene expression, and nitrate assimilation in Lolium perenne L. High- and low-affinity NO3- uptake was reduced in an N-dependent manner in response to a rapid and large shift in carbohydrate remobilization triggered by defoliation. This reduction in NO3- uptake was rescued by an exogenous glucose supplement, confirming the carbohydrate dependence of NO3- uptake. The regulation of NO3- uptake in response to the perturbation of the plant C/N ratio was associated with changes in expression of putative high- and low-affinity NO3- transporters. Furthermore, NO3- assimilation appears to be regulated by the C-N status of the plant, implying a mechanism that signals the availability of C metabolites for NO3- uptake and assimilation at the whole-plant level. We also show that cytokinins may be involved in the regulation of N acquisition and assimilation in response to the changing plant C/N ratio.

References provided by Crossref.org

000      
00000naa a2200000 a 4500
001      
bmc18033950
003      
CZ-PrNML
005      
20181009110300.0
007      
ta
008      
181008s2017 enk f 000 0|eng||
009      
AR
024    7_
$a 10.1093/jxb/erx056 $2 doi
035    __
$a (PubMed)28379423
040    __
$a ABA008 $b cze $d ABA008 $e AACR2
041    0_
$a eng
044    __
$a enk
100    1_
$a Guo, Qianqian $u School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
245    10
$a Depletion of carbohydrate reserves limits nitrate uptake during early regrowth in Lolium perenne L / $c Q. Guo, MH. Turnbull, J. Song, J. Roche, O. Novak, J. Späth, PE. Jameson, J. Love,
520    9_
$a The mechanisms linking C/N balance to N uptake and assimilation are central to plant responses to changing soil nutrient levels. Defoliation and subsequent regrowth of grasses both impact C partitioning, thereby creating a significant point of interaction with soil N availability. Using defoliation as an experimental treatment, we investigated the dynamic relationships between plant carbohydrate status and NO3--responsive uptake systems, transporter gene expression, and nitrate assimilation in Lolium perenne L. High- and low-affinity NO3- uptake was reduced in an N-dependent manner in response to a rapid and large shift in carbohydrate remobilization triggered by defoliation. This reduction in NO3- uptake was rescued by an exogenous glucose supplement, confirming the carbohydrate dependence of NO3- uptake. The regulation of NO3- uptake in response to the perturbation of the plant C/N ratio was associated with changes in expression of putative high- and low-affinity NO3- transporters. Furthermore, NO3- assimilation appears to be regulated by the C-N status of the plant, implying a mechanism that signals the availability of C metabolites for NO3- uptake and assimilation at the whole-plant level. We also show that cytokinins may be involved in the regulation of N acquisition and assimilation in response to the changing plant C/N ratio.
650    12
$a metabolismus sacharidů $7 D050260
650    12
$a regulace genové exprese u rostlin $7 D018506
650    _2
$a jílek $x genetika $x růst a vývoj $x metabolismus $7 D008129
650    _2
$a dusičnany $x metabolismus $7 D009566
650    _2
$a dusík $x metabolismus $7 D009584
650    _2
$a listy rostlin $x metabolismus $7 D018515
650    _2
$a rostlinné proteiny $x genetika $x metabolismus $7 D010940
655    _2
$a časopisecké články $7 D016428
655    _2
$a práce podpořená grantem $7 D013485
700    1_
$a Turnbull, Matthew Hamish $u School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
700    1_
$a Song, Jiancheng $u School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand. School of Life Sciences, Yantai University, Yantai 264005, China.
700    1_
$a Roche, Jessica $u School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
700    1_
$a Novak, Ondrej $u Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany CAS & Faculty of Science of Palacký University, Šlechtitelu 27, 783 71 Olomouc, Czech Republic.
700    1_
$a Späth, Jana $u Swedish Metabolomics Centre, Department of Forest Genetics and Plant Physiology, Swedish University of Agricultural Sciences KBC, Umeå University, Linnéus väg 6, SE-90183 Umeå, Sweden.
700    1_
$a Jameson, Paula Elizabeth $u School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
700    1_
$a Love, Jonathan $u School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand.
773    0_
$w MED00006559 $t Journal of experimental botany $x 1460-2431 $g Roč. 68, č. 7 (2017), s. 1569-1583
856    41
$u https://pubmed.ncbi.nlm.nih.gov/28379423 $y Pubmed
910    __
$a ABA008 $b sig $c sign $y a $z 0
990    __
$a 20181008 $b ABA008
991    __
$a 20181009110748 $b ABA008
999    __
$a ok $b bmc $g 1340362 $s 1030944
BAS    __
$a 3
BAS    __
$a PreBMC
BMC    __
$a 2017 $b 68 $c 7 $d 1569-1583 $i 1460-2431 $m Journal of Experimental Botany $n J Exp Bot $x MED00006559
LZP    __
$a Pubmed-20181008

Find record

Citation metrics

Archiving options