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ARS Home » Midwest Area » Madison, Wisconsin » Cereal Crops Research » Research » Publications at this Location » Publication #398761

Research Project: Integrated Analysis for Identifying Barley Lines with Superior Malting Quality

Location: Cereal Crops Research

Title: Identification of genomic loci controlling grain macro and micronutrients variation in a Wild Barley (H. vulgare spp spontaneum) Diversity Panel

Author
item ABENDROTH, JILLIAN - Oak Ridge Institute For Science And Education (ORISE)
item SALLAM, AHMAD - University Of Minnesota
item STEFFENSON, BRIAN - University Of Minnesota
item Vinje, Marcus
item Mahalingam, Ramamurthy
item Walling, Jason

Submitted to: Agronomy Journal
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: 11/4/2022
Publication Date: 11/14/2022
Citation: Abendroth, J.A., Sallam, A.H., Steffenson, B.J., Vinje, M.A., Mahalingam, R., Walling, J.G. 2022. Identification of genomic loci controlling grain macro and micronutrients variation in a Wild Barley (H. vulgare spp spontaneum) Diversity Panel. Agronomy Journal. 12(11). Article 2839. https://doi.org/10.3390/agronomy12112839.
DOI: https://doi.org/10.3390/agronomy12112839

Interpretive Summary: Nutrient deficiencies in humans are problematic on a global scale, but are most common in regions of the world where high-quality and nutrient-dense foods are scarce. Developing food sources rich in nutrients that thrive in these regions of the world would help alleviate the disparity. Toward that objective we undertook a thorough screening of the micronutrient and macronutrient content in a diverse population of wild barley and associated the variation with chromosomal locations to identify genetic factors that might control these traits in grains. We identified genetic locations for elements controlling content of iron, zinc, copper, boron, magnesium, manganese and calcium.

Technical Abstract: Nutrient deficiencies in humans are problematic on a global scale, but are most common in regions of the world where high-quality and nutrient-dense foods are scarce. Developing nutrient-rich food sources that thrive in these regions of the world would help alleviate the disparity. We leveraged the Wild barley (Hordeum vulgare spp. spontaneum) Diversity Collection (WBDC) (N=314) to characterize both the variation in seed macronutrients (P, K, Ca, Mg) and micronutrients (B, Cu, Fe, Mn, Zn) content found in this subspecies and to reveal chromosomal regions associated with these traits. Most micro and macro elements displayed sufficient variation in the WBDC and with the exception of boron and phosphorous, had a modest level of heretability (>0.5). Variation due to environment was significant (p<0.001) for each element, except iron, and genotype was significant for all the tested nutrients, except boron. Thirty-seven marker trait associations (MTAs) were detected for three (K, Ca, Mg) of the four macro and four (Cu, Fe, Mn, Zn) of the five micronutrients. A number of compelling candidate genes harbored within MTA were also identified including ABC transporters, NAC transcription factors, and bZIP transcription factors.