Genome analyses reveal population structure and a purple stigma color gene candidate in finger millet

Devos, Katrien M, Qi, Peng, Bahri, Bochra A, Gimode, Davis M, Jenike, Katharine, Manthi, Samuel J, Lule, Dagnachew, Lux, Thomas, Martinez-Bello, Liliam, Pendergast, Thomas H, Plott, Chris, Saha, Dipnarayan, Sidhu, Gurjot S, Sreedasyam, Avinash, Wang, Xuewen, Wang, Hao, Wright, Hallie, Zhao, Jianxin, Deshpande, Santosh, de Villiers, Santie, Dida, Mathews M, Grimwood, Jane, Jenkins, Jerry, Lovell, John, Mayer, Klaus FX, Mneney, Emmarold E, Ojulong, Henry F, Schatz, Michael C, Schmutz, Jeremy, Song, Bo, Tesfaye, Kassahun, Odeny, Damaris A (June 2023) Genome analyses reveal population structure and a purple stigma color gene candidate in finger millet. Nature Communications, 14 (1). p. 3694. ISSN 2041-1723

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Abstract

Finger millet is a key food security crop widely grown in eastern Africa, India and Nepal. Long considered a 'poor man's crop', finger millet has regained attention over the past decade for its climate resilience and the nutritional qualities of its grain. To bring finger millet breeding into the 21st century, here we present the assembly and annotation of a chromosome-scale reference genome. We show that this ~1.3 million years old allotetraploid has a high level of homoeologous gene retention and lacks subgenome dominance. Population structure is mainly driven by the differential presence of large wild segments in the pericentromeric regions of several chromosomes. Trait mapping, followed by variant analysis of gene candidates, reveals that loss of purple coloration of anthers and stigma is associated with loss-of-function mutations in the finger millet orthologs of the maize R1/B1 and Arabidopsis GL3/EGL3 anthocyanin regulatory genes. Proanthocyanidin production in seed is not affected by these gene knockouts.

Item Type:	Paper
Subjects:	bioinformatics bioinformatics > genomics and proteomics > genetics & nucleic acid processing bioinformatics > genomics and proteomics bioinformatics > genomics and proteomics > genetics & nucleic acid processing > genomes organism description > plant bioinformatics > genomics and proteomics > genetics & nucleic acid processing > population genetics
CSHL Authors:	Schatz, Michael C.
Communities:	CSHL labs > Schatz lab
SWORD Depositor:	CSHL Elements
Depositing User:	CSHL Elements
Date:	21 June 2023
Date Deposited:	22 Sep 2023 14:49
Last Modified:	08 Jan 2024 19:09
PMCID:	PMC10284860
Related URLs:	Publisher
URI:	https://repository.cshl.edu/id/eprint/40972

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