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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389030%3A_____%2F17%3A00476507" target="_blank" >RIV/61389030:_____/17:00476507 - isvavai.cz</a>

Alternative codes found

RIV/61989592:15310/17:73584035

Result on the web

<a href="http://dx.doi.org/10.1093/jxb/erx056" target="_blank" >http://dx.doi.org/10.1093/jxb/erx056</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/jxb/erx056" target="_blank" >10.1093/jxb/erx056</a>

Result language

angličtina

Original language name

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

Original language description

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 NO 3 responsive uptake systems, transporter gene expression, and nitrate assimilation in Lolium perenne L. High-and low-affinity NO 3 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 NO 3 uptake was rescued by an exogenous glucose supplement, confirming the carbohydrate dependence of NO 3 uptake. The regulation of NO 3 uptake in response to the perturbation of the plant C/N ratio was associated with changes in expression of putative high- and low-affinity NO 3 transporters. Furthermore, NO 3 assimilation appears to be regulated by the C-N status of the plant, implying a mechanism that signals the availability of C metabolites for NO 3 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.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10611 - Plant sciences, botany

Project

<a href="/en/project/GA17-06613S" target="_blank" >GA17-06613S: Phytohormone cross-talk during sub-zero acclimation</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Journal of Experimental Botany

ISSN

0022-0957

e-ISSN

—

Volume of the periodical

68

Issue of the periodical within the volume

7

Country of publishing house

GB - UNITED KINGDOM

Number of pages

15

Pages from-to

1569-1583

UT code for WoS article

000400341800017

EID of the result in the Scopus database

2-s2.0-85020161657