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24 January 2023 Distinctive plasticity of maize (Zea mays) root types to variable nitrate concentration
Yutong Jiang, Chih-Yu Hung, Joann K. Whalen
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Abstract

Maize roots vary their growth in response to nitrate (NO-3) concentration in the environment, but growth plasticity differs among root types. We assessed the morphological response of lateral and axial roots on the primary, seminal, and crown root types exposed to 0, 1, 2, 3.9, and 7.8mmolL−1NO-3. Higher NO-3 concentration did not change the growth of all axial roots and laterals of primary roots but caused positive quadratic growth in laterals of the seminal and crown root types. Maize root plasticity to NO-3 concentrations is the result of differential growth of laterals on seminal and crown root types.

Yutong Jiang, Chih-Yu Hung, and Joann K. Whalen "Distinctive plasticity of maize (Zea mays) root types to variable nitrate concentration," Canadian Journal of Plant Science 103(3), 319-323, (24 January 2023). https://doi.org/10.1139/cjps-2022-0246
Received: 10 November 2022; Accepted: 13 January 2023; Published: 24 January 2023
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KEYWORDS
Auxin
axial roots
nitrogen uptake
perlite
phenotypic plasticity
Root architecture
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