Lateral root formation in rice (Oryza sativa): Promotion effect of jasmonic acid

Shucai Wang, Masahiko Ichii, Shin Taketa, Langlai Xu, Kai Xia, Xie Zhou

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

The effect of JA on lateral root (LR) formation was tested using 2-day-old seedlings of IR8 rice (Oryza sativa L.). Results showed that JA in all concentrations (0.016-50 μmol/L) increased the number of LRs in the region of seminal root formed during and after the treatment (distal region), but had no effect (less than 2 μmol/L) or decreased (over 2 μmol/L) the number of LRs in the region already formed before treatment (basal region). On the other hand, the development of root hair in the distal region was inhibited, and even fully blocked by JA over 1 μmol/L. Both JA's effects on promoting LR formation and inhibiting root hair formation in the distal region could last at least 7 days subsequent to the removal of JA treatment. All these results indicated that JA might be one of the potent hormonal factors, other than auxin, involved in the regulation of LR formation.

Original languageEnglish
Pages (from-to)827-832
Number of pages6
JournalJournal of Plant Physiology
Volume159
Issue number8
DOIs
Publication statusPublished - Aug 2002
Externally publishedYes

Keywords

  • Jasmonic acid
  • Lateral root
  • Mutant
  • Oryza sativa L.
  • Rice
  • Seminal root

ASJC Scopus subject areas

  • Physiology
  • Agronomy and Crop Science
  • Plant Science

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