Root shape adaptation to mechanical stress derived from unidirectional vibrations in <i>Populus nigra</i>

• Beier Marcel Pascal

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

• Tsugawa Satoru

  Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology

• Demura Taku

  Division of Biological Science, Graduate School of Science and Technology, Nara Institute of Science and Technology

• Fujiwara Toru

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

Bibliographic Information

Other Title

• Root shape adaptation to mechanical stress derived from unidirectional vibrations in Populus nigra

Abstract

While it is known that plant roots can change their shapes to the stress direction, it remains unclear if the root orientation can change as a means for mechanical reinforcement. When stress in form of a unidirectional vibration is applied to cuttings of Populus nigra for 5 min a day over a period of 20 days, the root system architecture changes. The contribution of roots with a diameter larger than 0.04 cm increases, while the allocation to roots smaller than 0.03 cm decreases. In addition to the root diameter allocation, the root orientation in the stem proximity was analyzed by appearance and with a nematic tensor analysis in an attempt to calculate the average root orientation. The significant different allocation to roots with a larger diameter, and the tendency of roots to align in the vicinity of the stress axis (not significantly different), are indicating a mechanical reinforcement to cope with the received strain. This work indicates an adaptive root system architecture and a possible adaptive root orientation for mechanical reinforcement.

Journal

• Plant Biotechnology

  Plant Biotechnology 37 (4), 423-428, 2020-12-25

  Japanese Society for Plant Biotechnology

Keywords

• mechanical stress
• plant biomechanics
• root orientation
• shape adaptation

Details

• CRID: 1390286981362476544
• NII Article ID: 130007960242
• NII Book ID: AA11250821
• DOI: 10.5511/plantbiotechnology.20.0813a
• ISSN: 13476114
• ISSN: 13424580
• NDL BIB ID: 031264784
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031264784
• Web Site: https://www.jstage.jst.go.jp/article/plantbiotechnology/37/4/37_20.0813a/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed