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High-throughput CRISPR Vector Construction and Characterization of DNA Modifications by Generation of Tomato Hairy Roots
Published on: April 30, 2016
Root hairs, trichomes and the evolution of duplicate genes
1University of Missouri-St Louis, 8001 Natural Bridge Road, St Louis, MO 63121, USA. tkellogg@umsl.edu
Trends in Plant Science
|December 12, 2001
Summary
MYB proteins WEREWOLF and GLABRA1 are interchangeable, showing that cis-regulatory changes drive morphological diversification. Gene duplication and altered regulation explain distinct root and shoot functions over evolutionary time.
Area of Science:
- Plant molecular biology
- Evolutionary developmental biology
Background:
- MYB-class proteins play crucial roles in plant development.
- WEREWOLF (WER) and GLABRA1 (GL1) are MYB transcription factors with distinct expression patterns.
Discussion:
- WER and GL1 exhibit functional interchangeability despite their tissue-specific expression.
- This suggests that regulatory elements, not protein function, dictate their roles.
Key Insights:
- Evolutionary modifications in cis-regulatory sequences allow functionally similar genes to acquire distinct roles.
- Gene duplication followed by regulatory divergence is a key mechanism for morphological diversification.
Outlook:
- Understanding cis-regulatory evolution can illuminate pathways for crop improvement.
- Further research into MYB protein regulation can uncover novel developmental insights.
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