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Plasticity of rosette size in response to nitrogen availability is controlled by an RCC1 ‐family protein
Author(s) -
Duarte Gustavo Turqueto,
Pandey Prashant K.,
Vaid Neha,
Alseekh Saleh,
Fernie Alisdair R.,
Nikoloski Zoran,
Laitinen Roosa A. E.
Publication year - 2021
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/pce.14146
Subject(s) - rosette (schizont appearance) , nitrogen , chemistry , plasticity , microbiology and biotechnology , biology , biophysics , materials science , immunology , composite material , organic chemistry
Nitrogen (N) is fundamental to plant growth, development and yield. Genes underlying N utilization and assimilation are well‐characterized, but mechanisms underpinning plasticity of different phenotypes in response to N remain elusive. Here, using Arabidopsis thaliana accessions, we dissected the genetic architecture of plasticity in early and late rosette diameter, flowering time and yield, in response to three levels of N in the soil. Furthermore, we found that the plasticity in levels of primary metabolites were related with the plasticities of the studied traits. Genome‐wide association analysis identified three significant associations for phenotypic plasticity, one for early rosette diameter and two for flowering time. We confirmed that the gene At1g19880 , hereafter named as PLASTICITY OF ROSETTE TO NITROGEN 1 ( PROTON1 ), encoding for a regulator of chromatin condensation 1 (RCC1) family protein, conferred plasticity of rosette diameter in response to N. Treatment of PROTON1 T‐DNA line with salt implied that the reduced plasticity of early rosette diameter was not a general growth response to stress. We further showed that plasticities of growth and flowering‐related traits differed between environmental cues, indicating decoupled genetic programs regulating these traits. Our findings provide a prospective to identify genes that stabilize performance under fluctuating environments.