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Plant and Soil

, Volume 280, Issue 1–2, pp 253–266 | Cite as

Ara-Rhizotron: An Effective Culture System to Study Simultaneously Root and Shoot Development of Arabidopsis

  • Florence Devienne-BarretEmail author
  • Céline Richard-Molard
  • Michaël Chelle
  • Olivier Maury
  • Bertrand Ney
Article

Abstract

Studying Arabidopsis thaliana (L.) Heynh. root development in situ at the whole plant level without affecting shoot development has always been a challenge. Such studies are usually carried out on individual plants, neglecting competition of a plant population, using hydroponic systems or Agar-filled Petri dishes. Those both systems, however, present some limitations, such as difficulty to study precisely root morphogenesis or time-limited culture period, respectively. In this paper, we present a method of Arabidopsis thaliana (L.) Heynh. cultivation in soil medium, named “Ara-rhizotron”. It allows the non-destructive study of shoot and root development simultaneously during the entire period of vegetative growth. In this system, roots are grown in 2D conditions, comparable to other soil cultures. Moreover, grouping several Ara-rhizotrons in a box enables the establishment of 3D shoot competition as for plants grown in a population. In comparison to a control culture grown in pots in the same environmental conditions, the Ara-rhizotron resulted in comparable shoot development in terms of dry mass, leaf area, number of leaves and nitrogen content. We used this new culture system to study the effect of irrigation modalities on plant development. We found that irrigation frequency only affected root partitioning in the soil and shoot nitrogen content, but not shoot or root growth. These effects appeared at the end of the vegetative growth period. This experiment highlights the opportunity offered by the Ara-rhizotron to point out tardy effects, affecting simultaneously shoot development and root architecture of plants grown in a population. We discuss its advantages in relation to root development and physiology, as well as its possible applications.

Keywords

Arabidopsis cultivation method irrigation population rhizotron root development shoot development 

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Copyright information

© Springer 2006

Authors and Affiliations

  • Florence Devienne-Barret
    • 1
    Email author
  • Céline Richard-Molard
    • 1
  • Michaël Chelle
  • Olivier Maury
  • Bertrand Ney
  1. 1.INRA-INA P-G, Unité Environnement et Grandes CulturesCentre de Recherches de GrignonThiverval-GrignonFrance

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