期刊
JOURNAL OF EXPERIMENTAL BOTANY
卷 72, 期 22, 页码 7645-7647出版社
OXFORD UNIV PRESS
DOI: 10.1093/jxb/erab493
关键词
Auxin; brassinosteroids; chemical reprogramming; cell reprogramming; glycogen synthase kinase; microspore embryogenesis; plant hormone interaction; small molecule inhibitors; somatic embryogenesis
The fertilized egg is the starting point for multicellular organism development, plant cells have the ability to regenerate, and the fate of regenerating tissues is regulated by plant hormones.
The fertilized egg is the single totipotent cell from which multicellular organisms arise through the processes of cell division and differentiation. While animals typically lose their capacity to redifferentiate cells that are already fully differentiated, plant cells are thought to remain totipotent (Su et al., 2020). Every gardener knows well that plants can regenerate a full array of plant tissues from already differentiated organs. This also seems to be true for single plant cells such as protoplasts, which, under proper in vitro culture conditions, served as the initial source for generation of transgenic plants (Skoog and Miller, 1957; Birnbaum and Sanchez Alvarado, 2008). However, the mechanisms behind the totipotency of plant cells remain elusive, with the exception of the knowledge that the developmental fate of regenerating tissues can be directed by the ratio of two plant hormones, auxin and cytokinin (Skoog and Miller, 1957).
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