Abstract
Adventitious roots play an important role in plant growth and response to abiotic stresses, especially in cutting propagation plants. However, the formation of adventitious root is a complex process, which is influenced by environmental factors (such as mineral nutrition and light) and endogenous hormones (indole acetic acid (IAA), ethylene, gibberellin (GA), abscisic acid, cytokinin, indo-3-butyric acid, etc.). As a wide range of gene expression research tools, transcriptomics has been widely used in the study of adventitious root formation in different plant species. Here, we reviewed the main factors affecting adventitious root formation, the process of adventitious root formation after cutting, and the transcriptome analysis of adventitious root formation after cutting in different plant species. Finally, through transcriptomic analysis of adventitious root formation in different plant species, the research update and important roles of auxin, auxin synthesis, and signal transduction-related genes implicated in adventitious root formation were summarized. Our review will be useful for further dissection of the mechanism of adventitious roots formation in plant species.
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