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GrainGenes Reference Report: SCI-376-180

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Reference	SCI-376-180
Title	TaCol-B5 modifies spike architecture and enhances grain yield in wheat
Journal	Science
Year	2022
Volume	376
Pages	180-183
Author	[ Hide all but 1 of 13 ] Zhang X Jia H Li T Wu J Nagarajan R Lei L Powers CP Kan C-C Hua Wei H Liu Z Chen C Carver BF Yan L
Abstract	Spike architecture influences grain yield in wheat. We report the map-based cloning of a gene determining the number of spikelet nodes per spike in common wheat. The cloned gene is named TaCOL-B5 and encodes a CONSTANS-like protein that is orthologous to COL5 in plant species. Constitutive overexpression of the dominant TaCol-B5 allele but without the region encoding B-boxes in a common wheat cultivar increases the number of spikelet nodes per spike and produces more tillers and spikes, thereby enhancing grain yield in transgenic plants under field conditions. Allelic variation in TaCOL-B5 results in amino acid substitutions leading to differential protein phosphorylation by the protein kinase TaK4. The TaCol-B5 allele is present in emmer wheat but is rare in a global collection of modern wheat cultivars.
External Databases	http://doi.org/10.1126/science.abm0717
Allele	TaCOL-B5 (Triticum)
Gene	TaCOL-B5 (Triticum)
Germplasm	Yangmai 18
QTL	QSns.ocu-7B
Summarized in	Dubcovsky J MAS Wheat. Bringing Genomics to the Wheat Fields. Spikelet and spike number gene TaCol-B5 MAS Wheat. Marker Assisted Selection in Wheat.

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