Vegetative phase change
Vegetative phase change is the juvenile-to-adult transition in plants.[1] This transition is distinct from the reproductive transition and is most prolonged and pronounced in woody species. Manipulating phase change may be an important avenue for plant improvement.[2]
In the model plant Arabidopsis thaliana, vegetative phase change is relatively subtle: leaves become more curled, with an increased number of abaxial trichomes, and increased serration.[3] Studies in A. thaliana and maize identified microRNA MIR156 genes as master regulators of phase change, through their regulation of SQUAMOSA-PROMOTER-BINDING-LIKE (SBP/SPL) transcription factors.[4][5] This gene regulatory circuit appears to be conserved (with variations) in all land plants, including mosses.[1]
See also
[edit | edit source]References
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