Duplication and diversification of the LEAFY HULL STERILE1 and Oryza sativa MADS5 SEPALLATA lineages in graminoid Poales.

EvoDevo
Ashley R Christensen, Simon T Malcomber

Abstract

Gene duplication and the subsequent divergence in function of the resulting paralogs via subfunctionalization and/or neofunctionalization is hypothesized to have played a major role in the evolution of plant form. The LEAFY HULL STERILE1 (LHS1) SEPALLATA (SEP) genes have been linked with the origin and diversification of the grass spikelet, but it is uncertain 1) when the duplication event that produced the LHS1 clade and its paralogous lineage Oryza sativa MADS5 (OSM5) occurred, and 2) how changes in gene structure and/or expression might have contributed to subfunctionalization and/or neofunctionalization in the two lineages. Phylogenetic relationships among 84 SEP genes were estimated using Bayesian methods. RNA expression patterns were inferred using in situ hybridization. The patterns of protein sequence and RNA expression evolution were reconstructed using maximum parsimony (MP) and maximum likelihood (ML) methods, respectively. Phylogenetic analyses mapped the LHS1/OSM5 duplication event to the base of the grass family. MP character reconstructions estimated a change from cytosine to thymine in the first codon position of the first amino acid after the Zea mays MADS3 (ZMM3) domain converted a glutamine to a stop codon in...Continue Reading

References

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Citations

Apr 16, 2013·The Plant Journal : for Cell and Molecular Biology·Frances TranLaurian S Robert
Jul 1, 2016·Proceedings. Biological Sciences·Thomas John Dixon HallidayAnjali Goswami
Aug 10, 2016·Developmental Biology·Valerie L SozaVerónica S Di Stilio
Jun 7, 2019·International Journal of Molecular Sciences·Zulfiqar AliGyuhwa Chung
Oct 12, 2017·Seminars in Cell & Developmental Biology·Peter Bommert, Clinton Whipple
Oct 22, 2021·Frontiers in Plant Science·Arun S SeetharamMatthew B Hufford

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Methods Mentioned

BETA
PCR
Reverse Transcription Polymerase Chain Reaction
protein-folding

Software Mentioned

Basic Local Alignment Search Tool ( BLAST )
PAML
MacClade
MrBayes
MUSCLE
CODEML
Phylogenetic Analysis Using Maximum Likelihood ( PAML )
Adobe Photoshop
MP
Basic Local Alignment Search Tool

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