Genetic Architecture of Novel Sources for Reproductive Cold Tolerance in Sorghum

Chakrabarty, Subhadra; Kravcov, Natalja; Schaffasz, André; Snowdon, Rod J.; Wittkop, Benjamin; Windpassinger, Steffen

doi:10.3389/fpls.2021.772177

Cited by 4 publications

(3 citation statements)

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“…Sorghum a high for adaptation to a wide range of Besides yield and other agronomic traits, the improvement of cold tolerance at juvenile and reproductive stages [24][25][26] is a major breeding for sorghum cropping regions. Early seedling vigour is critical for crop establishment any environment [27] and vigorous germination and growth under low temperatures is essential for early establishment and weed competition in temperate climates.…”

Section: Discussionmentioning

confidence: 99%

Genetic and genomic diversity in the sorghum gene bank collection of Uganda

et al. 2022

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Background The Plant Genetic Resources Centre at the Uganda National Gene Bank houses has over 3000 genetically diverse landraces and wild relatives of Sorghum bicolor accessions. This genetic diversity resource is untapped, under-utilized, and has not been systematically incorporated into sorghum breeding programs. In this study, we characterized the germplasm collection using whole-genome SNP markers (DArTseq). Discriminant analysis of principal components (DAPC) was implemented to study the racial ancestry of the accessions in comparison to a global sorghum diversity set and characterize the sub-groups present in the Ugandan (UG) germplasm. Results Population structure and phylogenetic analysis revealed the presence of five subgroups among the Ugandan accessions. The samples from the highlands of the southwestern region were genetically distinct as compared to the rest of the population. This subset was predominated by the caudatum race and unique in comparison to the other sub-populations. In this study, we detected QTL for juvenile cold tolerance by genome-wide association studies (GWAS) resulting in the identification of 4 markers associated (−log10p > 3) to survival under cold stress under both field and climate chamber conditions, located on 3 chromosomes (02, 06, 09). To our best knowledge, the QTL on Sb09 with the strongest association was discovered for the first time. Conclusion This study demonstrates how genebank genomics can potentially facilitate effective and efficient usage of valuable, untapped germplasm collections for agronomic trait evaluation and subsequent allele mining. In face of adverse climate change, identification of genomic regions potentially involved in the adaptation of Ugandan sorghum accessions to cooler climatic conditions would be of interest for the expansion of sorghum production into temperate latitudes.

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Section: Discussionmentioning

confidence: 99%

Genetic and genomic diversity in the sorghum gene bank collection of Uganda

et al. 2022

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“…Sorghum has a high potential for adaptation to a wide range of environmental conditions. Besides yield and other agronomic traits, the improvement of cold tolerance at juvenile and reproductive stages (Schaffasz2019(a,b); S. Chakrabarty et al 2021) is a major breeding objective for sorghum temperate cropping regions. Early seedling vigour is critical for crop establishment in any environment (Xie et al 2014) and vigorous germination and growth under low temperatures is essential for early establishment and weed competition in temperate climates.…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity analysis and characterization of Ugandan sorghum

Chakrabarty

Mufumbo

Jordan

et al. 2022

Preprint

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The National Genebank of Uganda houses a diverse and rich Sorghum bicolor germplasm collection. This genetic diversity resource is untapped, under-utilized, and has not been systematically incorporated into sorghum breeding programs. In this study, we characterized the germplasm collection using whole-genome SNP markers. Discriminant analysis of principal components (DAPC) was implemented to study racial ancestry of the accessions in comparison to a global sorghum diversity set and characterize sub-groups and admixture in the Ugandan germplasm. Genetic structure and phylogenetic analysis were conducted to identify distinct genotypes in the Ugandan collection and relationships among groups. Furthermore, in a case study for the identification of potentially useful adaptive trait variation for breeding, we performed genome-wide association studies for juvenile cold tolerance. Genomic regions potentially involved in the adaptation of Ugandan sorghum varieties to cooler climatic conditions were identified that could be of interest for expansion of sorghum production into temperate latitudes. The study demonstrates how genebank genomics can potentially facilitate effective and efficient usage of valuable, untapped germplasm collections for agronomic trait evaluation and subsequent allele mining.

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“…NCGS, unlike CD and WA, is not caused by gluten. Fermentable oligo-, disaccharide-, mono-, and polyol-rich foods (FODMAPs) can cause IBS [36,39] . FODMAPs pass through the small intestine undigested and ferment in the large intestine, causing IBS symptoms.…”

Section: Non-celiac Gluten Sensitivity (Ncgs)mentioning

confidence: 99%

A review of gluten and sorghum as a gluten free substitute

Hegde,

Thangalakshmi,

Singh

2023

Trends Hortic.

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The review explores the role of gluten in food products, its associated health issues, and the growing market for gluten-free alternatives. Gluten, a protein in wheat, barley, and rye, is widely used in the food industry for its binding and stabilizing properties. Increasing gluten intolerance, especially in those with celiac disease, has boosted demand for gluten-free options like sorghum. Sorghum, a gluten-free grain, offers high protein and fiber content but also contains antinutritional factors like tannins, phytates, and protease inhibitors. Various processing techniques, such as dehulling, soaking, fermentation, and heating, have been developed to address these factors. Future trends in sorghum are expected to focus on innovative processing methods to enhance its nutritional value. This review also provides a detailed examination of gluten, its functions in foods, health concerns, gluten-free products, sorghum-based foods, antinutritional properties, processing technologies, and future opportunities.

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Genetic Architecture of Novel Sources for Reproductive Cold Tolerance in Sorghum

Cited by 4 publications

References 42 publications

Genetic and genomic diversity in the sorghum gene bank collection of Uganda

Genetic and genomic diversity in the sorghum gene bank collection of Uganda

Genetic diversity analysis and characterization of Ugandan sorghum

A review of gluten and sorghum as a gluten free substitute

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