Convergent recruitment of TALE homeodomain life cycle regulators to direct sporophyte development in land plants and brown algae.

ELife
Alok ArunJ Mark Cock

Abstract

Three amino acid loop extension homeodomain transcription factors (TALE HD TFs) act as life cycle regulators in green algae and land plants. In mosses these regulators are required for the deployment of the sporophyte developmental program. We demonstrate that mutations in either of two TALE HD TF genes, OUROBOROS or SAMSARA, in the brown alga Ectocarpus result in conversion of the sporophyte generation into a gametophyte. The OUROBOROS and SAMSARA proteins heterodimerise in a similar manner to TALE HD TF life cycle regulators in the green lineage. These observations demonstrate that TALE-HD-TF-based life cycle regulation systems have an extremely ancient origin, and that these systems have been independently recruited to regulate sporophyte developmental programs in at least two different complex multicellular eukaryotic supergroups, Archaeplastida and Chromalveolata.

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Citations

Jun 1, 2019·Annual Review of Microbiology·James Umen, Susana Coelho
Feb 16, 2019·Genome Biology·Agnieszka P LipinskaSusana M Coelho
Sep 3, 2020·EvoDevo·Susana M CoelhoJ Mark Cock
Aug 2, 2019·The Plant Journal : for Cell and Molecular Biology·Thamali KariyawasamJae-Hyeok Lee
Jun 17, 2019·Cellular and Molecular Life Sciences : CMLS·Gareth Bloomfield
Nov 25, 2020·Annual Review of Genetics·Susana M Coelho, J Mark Cock
Aug 30, 2019·Current Opinion in Genetics & Development·Alex de Mendoza, Arnau Sebé-Pedrós
Jan 6, 2021·Genome Biology·Simon BourdareauJ Mark Cock
Jun 29, 2021·Plant Reproduction·Susana M Coelho, James Umen
Jun 3, 2021·The New Phytologist·Yacine BadisJ Mark Cock
Jul 9, 2021·Plant Reproduction·Jérômine Vigneau, Michael Borg

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Datasets Mentioned

BETA
PRJEB1869
KU746822
KU746823

Methods Mentioned

BETA
reverse transcription PCR
RNA-seq
PCR
pull-down
electrophoresis
protein folding

Software Mentioned

LightCycler 480
Hectar
Tophat2
Bowtie2
RAxML
Ec
DESeq2 package
Trimmomatic
GraphPad Prism5
SPINE

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