Root Plasticity under Low Phosphate Availability

Devi, Loitongbam Lorinda; Pandey, Anshika; Singh, Amar Pal

doi:10.1201/9780429027505-2

Cited by 4 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Research has shown that trichoblasts and atrichoblasts differentiation and their organizational patterns, respond to changes in environmental conditions, especially nutrient availability [89, 101]. It has been observed that the differentiation of cell types in the root epidermis responds differently to deficiencies in various elements, such as phosphates [21, 30, 57], cadmium [5, 6], arsenic [5] nitrates [78], salinity [139], and CO2 [90], indicating a potential avenue of exploration for this approach. In this regard, the use of simulation tools to explore the dynamic aspects of phenotypic plasticity has begun to attract attention in the context of the management of crop species such as corn [42].…”

Section: Discussionmentioning

confidence: 99%

Extended discrete gene regulatory network model for theArabidopsis thalianaroot-hair cell fate

Castillo-Jiménez,

Garay-Arroyo,

de La Paz Sánchez

et al. 2023

Preprint

View full text Add to dashboard Cite

The differentiation of the two cell types of the root epidermis, atrichoblasts, which give rise to hair cells, and atrichoblasts, which do not develop as hair cells, is determined by a complex regulatory network of transcriptional factors and hormones that act in concert in space and time to define a characteristic pattern of rows of hair cells and non-hair cells interspersed with each other throughout the root epidermis ofArabidopsis thaliana. Previous models have defined a minimal regulatory network that recovers the Wild Type phenotype and some mutants but fails to recover most of the mutant phenotypes, thus limiting its ability to spread. In this work, we propose a diffusion-coupled regulatory genetic network or meta-Gene Regulatory Network model extended to the model previously published by our research group, to describe the patterns of organization of the epidermis of the root epidermis ofArabidopsis thaliana. This network fully or partially recovers loss-of-function mutants of the identity regulators of the epidermal cell types considered within the model. Not only that, this new extended model is able to describe in quantitative terms the distribution of trichoblasts and atrichoblasts defined at each cellular position with respect to the cortex cells so that it is possible to compare the proportions of each cell type at those positions with that reported in each of the mutants analyzed. In addition, the proposed model allows us to explore the importance of the diffusion processes that are part of the lateral inhibition mechanism underlying the network dynamics and their relative importance in determining the pattern in the Wild Type phenotype and the different mutants.

show abstract