Heterologous transformation of camelina sativa with high-speed chimeric myosin xi-2 promotes plant growth and leads to increased seed yield

Zhongrui Duan, Kohji Ito, Motoki Tominaga

Research output: Contribution to journalArticlepeer-review

Abstract

Camelina sativa is a Brassicaceae oilseed plant used as a biotechnology platform for biofuel and healthy vegetable oil. As Camelina is closely related to the model plant Arabidopsis, the genetic tools of Arabidopsis are considered useful when applied to Camelina. Myosin XI-2 is one of the major motive forces driving cytoplasmic streaming in Arabidopsis. In our previous study, high-speed chimeric myosin XI-2, a myosin XI-2 artificially modified by genetically exchanging the motor domain of Arabidopsis myosin XI-2 with the faster Chara myosin XI, was shown to accelerate cytoplasmic streaming and promote plant growth in Arabidopsis. Here, we heterologously transformed this high-speed Chara-Arabidopsis chimeric myosin XI-2 gene in Camelina. The transgenic plants exhibited not only enhancement of leaf development and main stem elongation but also early flowering and seed setting, indicating that the high-speed chimeric myosin XI-2 can improve plant growth in Camelina. Interestingly, total seed yield was significantly increased in the transgenic plants as the total seed number increased. Our results suggest that the high-speed myosin XI system might also be effective to improve the growth of other closely related plant species.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalPlant Biotechnology
Volume37
Issue number3
DOIs
Publication statusPublished - 2020

Keywords

  • Camelina
  • Heterologous transformation
  • High-speed chimeric myosin XI-2
  • Plant growth
  • Seed yield

ASJC Scopus subject areas

  • Biotechnology
  • Agronomy and Crop Science
  • Plant Science

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