EGU24-11099, updated on 08 Mar 2024
https://doi.org/10.5194/egusphere-egu24-11099
EGU General Assembly 2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Soil fertilization alters spatial and temporal distribution of amino-N in the rhizosphere of maize

Evgenia Blagodatskaya1, Guoting Shen1, and Andrey Guber2
Evgenia Blagodatskaya et al.
  • 1Helmholtz-Zentrum für Umweltforschung - UFZ, Department Bodenökologie, Leipzig, Germany (evgenia.blagodatskaya@ufz.de)
  • 2Department of Plant, Soil, and Microbial Sciences, Michigan State University, East Lansing, MI, USA

Despite an importance and relatively high abundance of organic N in soil, it is uncertain how the distribution of organic N is affected by mineral N availability in the course of root development. We visualized amino-N content in seminal and lateral roots of maize (Zea mays L.) grown under reduced and full fertilization at the 4- and 6-leaves phases.  The intensity of amino-N hotspots was fertilization-, growth phase- and root-specific. Under reduced fertilization, amino-N content decreased in all root parts at the 6- versus the 4-leaves phase. Under full fertilization, the content of amino-N increased in seminal roots and lateral root tips but it decreased in seminal root tips with root growth. This suggests a potential functional differentiation of seminal and lateral root tips in the N-acquisition strategy in the course of plant growth. 

How to cite: Blagodatskaya, E., Shen, G., and Guber, A.: Soil fertilization alters spatial and temporal distribution of amino-N in the rhizosphere of maize, EGU General Assembly 2024, Vienna, Austria, 14–19 Apr 2024, EGU24-11099, https://doi.org/10.5194/egusphere-egu24-11099, 2024.