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Title: Sorghum Dw2 Encodes a Protein Kinase Regulator of Stem Internode Length

Journal Article · · Scientific Reports
 [1];  [2]; ORCiD logo [1];  [1];  [1];  [2];  [2];  [3]
  1. Texas A & M Univ., College Station, TX (United States). Interdisciplinary Program in Genetics
  2. Texas A & M Univ., College Station, TX (United States).Dept. of Biochemistry and Biophysics
  3. Texas A & M Univ., College Station, TX (United States). Interdisciplinary Program in Genetics and Dept. of Biochemistry and Biophysics

Sorghum is an important C4 grass crop grown for grain, forage, sugar, and bioenergy production. While tall, late flowering landraces are commonly grown in Africa, short early flowering varieties were selected in US grain sorghum breeding programs to reduce lodging and to facilitate machine harvesting. Four loci have been identified that affect stem length (Dw1-Dw4). Subsequent research showed that Dw3 encodes an ABCB1 auxin transporter and Dw1 encodes a highly conserved protein involved in the regulation of cell proliferation. In this study, Dw2 was identified by fine-mapping and further confirmed by sequencing the Dw2 alleles in Dwarf Yellow Milo and Double Dwarf Yellow Milo, the progenitor genotypes where the recessive allele of dw2 originated. Furthermore, the Dw2 locus was determined to correspond to Sobic.006G067700, a gene that encodes a protein kinase that is homologous to KIPK, a member of the AGCVIII subgroup of the AGC protein kinase family in Arabidopsis.

Research Organization:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Biological and Environmental Research (BER)
Grant/Contract Number:
FC02-07ER64494
OSTI ID:
1466831
Journal Information:
Scientific Reports, Vol. 7, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 51 works
Citation information provided by
Web of Science

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Cited By (8)

Semantic Segmentation of Sorghum Using Hyperspectral Data Identifies Genetic Associations journal February 2020
Sorghum stem aerenchyma formation is regulated by SbNAC_D during internode development journal November 2018
Evaluation of genetic diversity, agronomic traits, and anthracnose resistance in the NPGS Sudan Sorghum Core collection journal January 2020
Genotyping by Sequencing of 393 Sorghum bicolor BTx623 × IS3620C Recombinant Inbred Lines Improves Sensitivity and Resolution of QTL Detection journal May 2018
Association mapping by aerial drone reveals 213 genetic associations for Sorghum bicolor biomass traits under drought journal September 2018
Genetic Architecture of Chilling Tolerance in Sorghum Dissected with a Nested Association Mapping Population journal October 2019
Genetic and genomic resources of sorghum to connect genotype with phenotype in contrasting environments journal December 2018
QTG-Finder2: A Generalized Machine-Learning Algorithm for Prioritizing QTL Causal Genes in Plants journal May 2020