In:
Plant, Cell & Environment, Wiley, Vol. 44, No. 12 ( 2021-12), p. 3806-3818
Abstract:
Nitrogen‐potassium synergistic and antagonistic interactions are the typical case of nutrient interactions. K synergistic and antagonistic interactions were determined by the form of available N. This study supports a model for the interaction between N forms and K translocation from roots to shoots. In the presence of NH 4 + , NH 4 + nutrition enhanced the biosynthesis of ET and the transcriptional activity of EIN3, which subsequently repressed the expression of AtNRT1.5, resulting in severe shoot K + deficiency and early leaf senescence. However, the supply of low amounts of NO 3 − strongly suppressed the activity of EIN3 and significantly increased AtNRT1.5 expression and shoot K + concentration. Thus, NO 3 − possibly acts as a signaling molecule that alleviates NH 4 + toxicity, and this is at least partially dependent on its tight regulation of ET production. Collectively, the present study established a regulation pathway to explain the interaction between N form and K + translocation, and showed that N form‐mediated ethylene signal regulated root‐to‐shoot K + translocation via NRT1.5 .
Type of Medium:
Online Resource
ISSN:
0140-7791
,
1365-3040
Language:
English
Publisher:
Wiley
Publication Date:
2021
detail.hit.zdb_id:
391893-2
detail.hit.zdb_id:
2020843-1
SSG:
12
Bookmarklink