Improving the efficiency of adventitious shoot induction and somatic embryogenesis via modification of wuschel and leafy cotyledon 1

Miho Ikeda, Mikiya Takahashi, Sumire Fujiwara, Nobutaka Mitsuda, Masaru Ohme-Takagi

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

The induction of adventitious organs, such as calli, shoots, and somatic embryos, in tissue culture is a useful technique for plant propagation and genetic modification. In recent years, several genes have been reported to be adventitious organ inducers and proposed to be useful for industrial applications. Even though the Arabidopsis (Arabidopsis thaliana) WUSCHEL (WUS) and LEAFY COTYLEDON 1 (LEC1) genes can induce adventitious organ formation in Arabidopsis without phytohormone treatment, further improvement is desired. Here, we show that modifying the transcriptional repression/activation activities of WUS and LEC1 improves the efficiency of adventitious organ formation in Arabidopsis. Because WUS functions as a transcriptional repressor during the induction of adventitious organs, we fused it to an artificial strong repression domain, SUPERMAN REPRESSION DOMAIN X (SRDX). Conversely, we fused the strong transcriptional activation domain VP16 from herpes simplex virus to LEC1. Upon overexpression of the corresponding transgenes, we succeeded in improving the efficiency of adventitious organ induction. Our results show that the modification of transcriptional repression/activation activity offers an effective method to improve the efficiency of adventitious organ formation in plants.

Original languageEnglish
Article number1434
Pages (from-to)1-11
Number of pages11
JournalPlants
Volume9
Issue number11
DOIs
Publication statusPublished - 2020 Nov

All Science Journal Classification (ASJC) codes

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Plant Science

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