Evolution of vascular plants through redeployment of ancient developmental regulators.
Proc Natl Acad Sci U S A
; 117(1): 733-740, 2020 01 07.
Article
in En
| MEDLINE
| ID: mdl-31874927
ABSTRACT
Vascular plants provide most of the biomass, food, and feed on earth, yet the molecular innovations that led to the evolution of their conductive tissues are unknown. Here, we reveal the evolutionary trajectory for the heterodimeric TMO5/LHW transcription factor complex, which is rate-limiting for vascular cell proliferation in Arabidopsis thaliana Both regulators have origins predating vascular tissue emergence, and even terrestrialization. We further show that TMO5 evolved its modern function, including dimerization with LHW, at the origin of land plants. A second innovation in LHW, coinciding with vascular plant emergence, conditioned obligate heterodimerization and generated the critical function in vascular development in Arabidopsis In summary, our results suggest that the division potential of vascular cells may have been an important factor contributing to the evolution of vascular plants.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Trans-Activators
/
Arabidopsis
/
Gene Expression Regulation, Plant
/
Gene Expression Regulation, Developmental
/
Evolution, Molecular
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Arabidopsis Proteins
/
Basic Helix-Loop-Helix Transcription Factors
Language:
En
Journal:
Proc Natl Acad Sci U S A
Year:
2020
Type:
Article
Affiliation country:
Netherlands