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Acta Agronomica Sinica ›› 2023, Vol. 49 ›› Issue (2): 299-309.doi: 10.3724/SP.J.1006.2023.24103

• REVIEW •     Next Articles

Molecular mechanisms of somatic embryogenesis in plants

HAN Bei(), SUN Si-Min, SUN Wei-Nan, YANG Xi-Yan(), ZHANG Xian-Long   

  1. National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan 430070, Hubei, China
  • Received:2022-04-08 Accepted:2022-08-01 Online:2022-08-09 Published:2022-08-09
  • Contact: YANG Xi-Yan E-mail:bhan_z@163.com;yxy@mail.hzau.edu.cn
  • Supported by:
    National Key Research and Development Program of China(2018YFD1000907)

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Abstract:

Plant cell totipotency refers to that each cell has all the genetic information of the plant, and in vitro tissues or cells has the potential to develop into a whole plant under appropriate culture conditions. Somatic embryogenesis is the most efficient way to reflect the totipotency of plant cells. It has broad application prospects in the fields of artificial seeds, haploid breeding, asexual reproduction, and germplasm preservation, and its mechanism is also a hotspot in basic research. In recent years, with the development of technology and in-depth research, the molecular regulation mechanism of plant somatic embryogenesis has made important progress. Plant somatic embryogenesis is the result of the expression and regulation of a series of genes in spatiotemporal order. In this review, we systematically reviewed the roles of hormones and stress signal transduction, embryonic development related transcription factors, extracellular proteins, and epigenetic regulation in somatic embryogenesis, and prospected future research priorities and directions in this field.

Key words: somatic embryogenesis, hormone and stress signaling transduction pathways, transcription factor, epigenetic regulation

Fig. 1

Auxin signaling and somatic embryogenesis"

Fig. 2

Mechanical damage regulates callus formation through the regulatory factor WINs"

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