Insight into the basis of root growth in Arabidopsis thaliana provided by a simple mathematical model

Akitoshi Iwamoto, Daisuke Satoh, Masahiko Furutani, Shinichiro Maruyama, Hideaki Ohba, Munetaka Sugiyama

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

Plant organ growth changes under genetic and environmental influences can be observed as altered cell proliferation and volume growth. The two aspects are mutually dependent and intricately related. For comprehensive growth analysis, it is necessary to specify the relationship quantitatively. Here, we develop a simple mathematical model for this purpose. Our model assumes that the biological activity of a given organ is proportional to the cell number of the organ and is allocated into three aspects: cell proliferation, volume growth, and organ maintenance. We analyzed the growth of primary roots of Arabidopsis thaliana (L.) Heynh. in one tetraploid and four diploid strains using this model. The analysis determined various growth parameters, such as specific cost coefficients of cell proliferation and volume growth for each strain. The results provide insight into the basis of interstrain variations and ploidy effects in root growth.

Original languageEnglish
Pages (from-to)85-93
Number of pages9
JournalJournal of Plant Research
Volume119
Issue number2
DOIs
Publication statusPublished - 2006 Mar
Externally publishedYes

Keywords

  • Arabidopsis thaliana
  • Ecotype
  • Mathematical model
  • Ploidy
  • Root growth

ASJC Scopus subject areas

  • Plant Science

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