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Khan A, Tian R, Bean SR, Yerka M, Jiao Y. Transcriptome and metabolome analyses reveal regulatory networks associated with nutrition synthesis in sorghum seeds. Commun Biol 2024; 7:841. [PMID: 38987396 PMCID: PMC11237005 DOI: 10.1038/s42003-024-06525-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Accepted: 06/28/2024] [Indexed: 07/12/2024] Open
Abstract
Cereal seeds are vital for food, feed, and agricultural sustainability because they store and provide essential nutrients to human and animal food and feed systems. Unraveling molecular processes in seed development is crucial for enhancing cereal grain yield and quality. We analyze spatiotemporal transcriptome and metabolome profiles during sorghum seed development in the inbred line 'BTx623'. Morphological and molecular analyses identify the key stages of seed maturation, specifying starch biosynthesis onset at 5 days post-anthesis (dpa) and protein at 10 dpa. Transcriptome profiling from 1 to 25 dpa reveal dynamic gene expression pathways, shifting from cellular growth and embryo development (1-5 dpa) to cell division, fatty acid biosynthesis (5-25 dpa), and seed storage compounds synthesis in the endosperm (5-25 dpa). Network analysis identifies 361 and 207 hub genes linked to starch and protein synthesis in the endosperm, respectively, which will help breeders enhance sorghum grain quality. The availability of this data in the sorghum reference genome line establishes a baseline for future studies as new pangenomes emerge, which will consider copy number and presence-absence variation in functional food traits.
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Affiliation(s)
- Adil Khan
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA
| | - Ran Tian
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA
| | - Scott R Bean
- Grain Quality and Structure Research Unit, Center for Grain and Animal Health Research, USDA-ARS, 1515 College Ave, Manhattan, KS, 66502, USA
| | - Melinda Yerka
- Department of Agriculture, Veterinary & Rangeland Sciences, University of Nevada-Reno, Reno, NV, 89557, USA
| | - Yinping Jiao
- Institute of Genomics for Crop Abiotic Stress Tolerance, Department of Plant and Soil Science, Texas Tech University, Lubbock, TX, 79409, USA.
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Khalid W, Arshad MS, Aslam N, Mukhtar S, Rahim MA, Ranjha MMAN, Noreen S, Afzal MF, Aziz A, Awuchi CG. Food applications of sorghum derived kafirins potentially valuable in celiac disease. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2022. [DOI: 10.1080/10942912.2022.2135532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Waseem Khalid
- Department of Food Science, Government College University, Faisalabad, Pakistan
| | | | - Noman Aslam
- Department of Food Science, Government College University, Faisalabad, Pakistan
| | - Shanza Mukhtar
- Department of Nutrition and Dietetics, the University of Faisalabad, Faisalabad, Pakistan
| | | | | | - Sana Noreen
- University Institute of Diet and Nutritional Sciences, the University of Lahore, Lahore, Pakistan
| | | | - Afifa Aziz
- Department of Food Science, Government College University, Faisalabad, Pakistan
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3
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Massel K, Hintzsche J, Restall J, Kerr ED, Schulz BL, Godwin ID. CRISPR-knockout of β-kafirin in sorghum does not recapitulate the grain quality of natural mutants. PLANTA 2022; 257:8. [PMID: 36481955 DOI: 10.1007/s00425-022-04038-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2022] [Accepted: 11/22/2022] [Indexed: 06/17/2023]
Abstract
When gene editing was applied to knockout beta-kafirin, there was a compensatory increase of gamma-kafirin which does not occur in domesticated null varieties, so enhanced grain quality was not achieved. Sorghum bicolor is an important animal feedstock cereal crop throughout Australia and the southern United States, where its use as a food product is limited by issues with low calorific and nutritive value. Qualities such as reduced digestibility and low essential amino acid content are directly attributed to the kafirin grain storage proteins, the major components of protein bodies within the endosperm. Specifically, the β- and γ-kafirins have few protease cleavage sites and high levels of cysteine residues which lead to a highly cross-linked shell of intra- and inter-molecular disulphide linkages that encapsulate the more digestible α- and δ-kafirins in the core of the protein bodies. Naturally occurring β-kafirin mutants exist and are known to have improved grain quality, with enhanced protein contents and digestibility, traits which are often attributed to the lack of this cysteine-rich kafirin in the mature grain. However, when CRISPR/Cas9 editing was used to create β-kafirin knockout lines, there was no improvement to grain quality in the Tx430 background, although they did have unique protein composition and changes to protein body morphology in the vitreous endosperm. One explanation of the divergence in quality traits found the lines lacking β-kafirin are due to a drastic increase of γ-kafirin which was only found in the gene edited lines. This study highlights that in some germplasm, there is a level of redundancy between the peripheral kafirins, and that improvement of grain protein digestibility cannot be achieved by simply removing the β-kafirin protein in all genetic backgrounds.
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Affiliation(s)
- Karen Massel
- Centre for Crop Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, QLD, 4072, Australia.
| | - Jessica Hintzsche
- School of Agriculture and Food Sciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Jemma Restall
- Centre for Crop Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Edward D Kerr
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Benjamin L Schulz
- School of Chemistry and Molecular Biosciences, The University of Queensland, Brisbane, QLD, 4072, Australia
| | - Ian D Godwin
- Centre for Crop Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, Brisbane, QLD, 4072, Australia
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Meena K, Visarada KBRS, Meena D. Sorghum bicolor (L.) Moench a multifarious crop -fodder to therapeutic potential and biotechnological applications: A future food for the millennium. FUTURE FOODS 2022. [DOI: 10.1016/j.fufo.2022.100188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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Ribeiro TS, Scramin JA, Rodrigues JAS, Bernardes Filho R, Colnago LA, Forato LA. 13C ss-NMR Singular value decomposition and fitting for sorghum proteins conformation elucidation. POLIMEROS 2022. [DOI: 10.1590/0104-1428.20210082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Zhong HL, Liu Y, Nie YD, Wang Z, Zhu L, Wang N, Li JH, Han FX, Li GY. Change of soluble acid invertase gene ( SAI-1) haplotype in hybrid sorghum breeding program in China. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2021; 41:37. [PMID: 37309441 PMCID: PMC10236051 DOI: 10.1007/s11032-021-01231-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 05/07/2021] [Indexed: 06/13/2023]
Abstract
Sugar metabolism is the most important and core one which drives plant growth and development. Invertases are key enzymes that regulate sugar metabolism. A still-growing number of studies have revealed that invertases play a crucial role in various aspects of plant growth and development. Crop yield is the product of sugar metabolism; it could be deduced that invertase also regulated the yield formation. So we have done a series of research on soluble acid invertase in sweet sorghum from enzyme activity to gene cloning and functional marker development. In this paper, we sequenced full length of SAI-1 gene in 69 grain sorghum parent lines, trying to see how it differs in their gene sequences and their distribution in related hybrid varieties released in the past. To our surprise, the result showed that B-lines and restore lines (R-line) have almost different SAI-1 haplotype distribution. The change of haplotype of SAI-1 gene is associated with yield gain as with grain sorghum breeding progress, which proved that SAI-1 may take a very important role in yield formation. And we also found the SAI-1 gene tends to become shorter as with the breeding advance, which means short sequence in introns, while exon remains unchanged leading to higher gene efficiency. The best SAI-1 haplotype combination of sorghum hybrid was also found for different planting regions. These findings are of great significance for improving breeding efficiency, understanding heterosis, and germplasm enhancement. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-021-01231-2.
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Affiliation(s)
- Hai-Li Zhong
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Yang Liu
- South Subtropical Crop Research Institute, Chinese Academy of Tropical Agricultural Sciences, Zhanjiang, 524013 Guangdong China
| | - Yuan-Dong Nie
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Zhi Wang
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Li Zhu
- Biotechnology Research Institute, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Nai Wang
- Institute of Crop Germplasm Resources, Jilin Academy of Agricultural Sciences, Changchun, 130033 Jilin China
| | - Ji-Hong Li
- Institute of Crop Germplasm Resources, Jilin Academy of Agricultural Sciences, Changchun, 130033 Jilin China
| | - Fen-Xia Han
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
| | - Gui-Ying Li
- National Engineering Laboratory for Crop Molecular Breeding, Institute of Crop Science, Chinese Academy of Agricultural Sciences, Beijing, 100081 China
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Selle PH, Hughes RJ, Godwin ID, Khoddami A, Chrystal PV, Liu SY. Addressing the shortfalls of sorghum as a feed grain for chicken-meat production. WORLD POULTRY SCI J 2021. [DOI: 10.1080/00439339.2020.1866966] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Peter H. Selle
- Poultry Research Foundation within the University of Sydney, Camden, Australia
| | - Robert J Hughes
- School of Animal and Veterinary Sciences, The University of Adelaide, Roseworthy, Australia
| | - Ian D. Godwin
- Centre for Crop Science, Queensland Alliance for Agriculture and Food Innovation, The University of Queensland, St Lucia Qld, Australia
| | - Ali Khoddami
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, Australia
| | - Peter V. Chrystal
- Poultry Research Foundation within the University of Sydney, Camden, Australia
- Baiada Poultry Pty Limited, Pendle Hill, Australia
| | - Sonia Yun Liu
- Poultry Research Foundation within the University of Sydney, Camden, Australia
- School of Life and Environmental Sciences, Faculty of Science, The University of Sydney, Sydney, Australia
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Boyles RE, Brenton ZW, Kresovich S. Genetic and genomic resources of sorghum to connect genotype with phenotype in contrasting environments. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2019; 97:19-39. [PMID: 30260043 DOI: 10.1111/tpj.14113] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 08/30/2018] [Accepted: 09/03/2018] [Indexed: 05/10/2023]
Abstract
With the recent development of genomic resources and high-throughput phenotyping platforms, the 21st century is primed for major breakthroughs in the discovery, understanding and utilization of plant genetic variation. Significant advances in agriculture remain at the forefront to increase crop production and quality to satisfy the global food demand in a changing climate all while reducing the environmental impacts of the world's food production. Sorghum, a resilient C4 grain and grass important for food and energy production, is being extensively dissected genetically and phenomically to help connect the relationship between genetic and phenotypic variation. Unlike genetically modified crops such as corn or soybean, sorghum improvement has relied heavily on public research; thus, many of the genetic resources serve a dual purpose for both academic and commercial pursuits. Genetic and genomic resources not only provide the foundation to identify and understand the genes underlying variation, but also serve as novel sources of genetic and phenotypic diversity in plant breeding programs. To better disseminate the collective information of this community, we discuss: (i) the genomic resources of sorghum that are at the disposal of the research community; (ii) the suite of sorghum traits as potential targets for increasing productivity in contrasting environments; and (iii) the prospective approaches and technologies that will help to dissect the genotype-phenotype relationship as well as those that will apply foundational knowledge for sorghum improvement.
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Affiliation(s)
- Richard E Boyles
- Pee Dee Research and Education Center, Clemson University, 2200 Pocket Rd, Florence, SC, 29506, USA
- Advanced Plant Technology Program, Clemson University, 105 Collings St, Clemson, SC, 29634, USA
| | - Zachary W Brenton
- Advanced Plant Technology Program, Clemson University, 105 Collings St, Clemson, SC, 29634, USA
- Department of Plant and Environment Sciences, Clemson University, 171 Poole Agricultural Center, Clemson, SC, 29634, USA
| | - Stephen Kresovich
- Advanced Plant Technology Program, Clemson University, 105 Collings St, Clemson, SC, 29634, USA
- Department of Plant and Environment Sciences, Clemson University, 171 Poole Agricultural Center, Clemson, SC, 29634, USA
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9
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Liu G, Gilding EK, Kerr ED, Schulz BL, Tabet B, Hamaker BR, Godwin ID. Increasing protein content and digestibility in sorghum grain with a synthetic biology approach. J Cereal Sci 2019. [DOI: 10.1016/j.jcs.2018.11.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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11
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Taylor J, Taylor JRN. Making Kafirin, the Sorghum Prolamin, into a Viable Alternative Protein Source. J AM OIL CHEM SOC 2018. [DOI: 10.1002/aocs.12016] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Janet Taylor
- Institute for Food, Nutrition and Well-being and Department of Food Science; University of Pretoria, Private Bag X20; Hatfield 0028 South Africa
| | - John R. N. Taylor
- Institute for Food, Nutrition and Well-being and Department of Food Science; University of Pretoria, Private Bag X20; Hatfield 0028 South Africa
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Selle PH, Moss AF, Truong HH, Khoddami A, Cadogan DJ, Godwin ID, Liu SY. Outlook: Sorghum as a feed grain for Australian chicken-meat production. ANIMAL NUTRITION (ZHONGGUO XU MU SHOU YI XUE HUI) 2018; 4:17-30. [PMID: 30167480 PMCID: PMC6112367 DOI: 10.1016/j.aninu.2017.08.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Revised: 08/16/2017] [Accepted: 08/17/2017] [Indexed: 11/24/2022]
Abstract
This review is an outlook for sorghum as a feed grain for broiler chickens based on a survey of relevant stake-holders and recent research outcomes. Australian grain sorghum production will probably continue to generate a harvest in the order of 2.5 × 106 t of which some 7.9 × 105 t will be used as a feed grain for poultry and pigs. Feed grains are included primarily to provide energy from starch, but energy utilisation by broiler chickens offered sorghum-based diets is relatively inferior, because of incomplete starch digestion. Kafirin, the dominant protein fraction, 'non-tannin' phenolic compounds and phytate are 3 'starch extrinsic' factors in sorghum that compromise starch digestibility and energy utilisation in broiler chickens offered sorghum-based diets. Kafirin concentrations in 6 sorghum varieties were negatively correlated with metabolizable energy to gross energy (ME:GE) ratios (r = -0.891; P < 0.02) or the efficiency of energy utilisation in broiler chickens. Importantly, kafirin proportions of sorghum protein may be increasing with time in Australia. If so, this represents a fundamental challenge to sorghum breeders which presumably could be met by the development of sorghum varieties with different characteristics, especially in relation to the γ- and β-kafirin fractions. White sorghum varieties contain lower polyphenol concentrations which should be advantageous as concentrations of total phenolic compounds were negatively correlated to ME:GE ratios (r = -0.838; P < 0.04) in 6 sorghum varieties. It would be desirable if more white varieties were to become available. It is suggested that responses to exogenous phytase in birds offered sorghum-based diets would be more robust if sorghum were to contain lower concentrations of kafirin and phenolic compounds. Paradoxically, while better sorghum varieties almost certainly could be developed, it may not necessarily follow that they will command a price premium from poultry and pig producers.
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Affiliation(s)
- Peter H. Selle
- Poultry Research Foundation, The University of Sydney, Camden, NSW 2570, Australia
| | - Amy F. Moss
- Poultry Research Foundation, The University of Sydney, Camden, NSW 2570, Australia
| | - Ha H. Truong
- Poultry Research Foundation, The University of Sydney, Camden, NSW 2570, Australia
| | - Ali Khoddami
- Poultry Research Foundation, The University of Sydney, Camden, NSW 2570, Australia
- Sydney Institute of Agriculture, Faculty of Science, The University of Sydney, NSW 2006, Australia
| | | | - Ian D. Godwin
- School of Agriculture and Food Sciences, The University of Queensland, QLD 4072, Australia
| | - Sonia Y. Liu
- Poultry Research Foundation, The University of Sydney, Camden, NSW 2570, Australia
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Chiquito-Almanza E, Ochoa-Zarzosa A, López-Meza JE, Pecina-Quintero V, Nuñez-Colín CA, Anaya-López JL. A new allele of γ-kafirin gene coding for a protein with high lysine content in Mexican white sorghum germplasm. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2016; 96:3342-3350. [PMID: 26526074 DOI: 10.1002/jsfa.7513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Revised: 08/01/2015] [Accepted: 10/28/2015] [Indexed: 06/05/2023]
Abstract
BACKGROUND Low protein digestibility and lysine content of white sorghum grain limit its use as a foodstuff. The increase in γ-kafirin cross-linking, has an important role in the reduction of protein digestibility. The objective of this study was to characterize the γ-kafirin gene in 12 Mexican tannin-free white sorghum genotypes and its relationship with protein digestibility and lysine content. RESULTS Two alleles of γ-kafirin gene were identified: alleles 1 and 7. The predicted amino acid sequence of allele 7 showed seven point mutations; six were silent, and one missense (C235G), causing the substitution P79A in the deduced amino acid sequence. In silico analysis showed that γ-kafirin codified by allele 1 has five α-helixes without disulfide bonds, while γ-kafirin coding by allele 7 has four α-helixes and three disulfide bonds. Genotypes with allele 7 had higher lysine content than those with allele 1, showing no differences in the kafirin electrophoretic profile, neither a correlation with the protein content nor the in vitro pepsin digestibility. CONCLUSIONS Mexican tannin-free white sorghum genotypes showed two γ-kafirin alleles, 1 and 7. Allele 7 was associated with higher lysine content; in silico analysis showed that the substitution of P79A in this allele could modify γ-kafirin secondary structure. © 2015 Society of Chemical Industry.
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Affiliation(s)
- Elizabeth Chiquito-Almanza
- Centro Multidisciplinario de Estudios en Biotecnología-Facultad de Medicina Veterinaria y Zootecnia, Universidad Michoacana de San Nicolás de Hidalgo, C.P. 58893, Morelia, Michoacán, México
| | - Alejandra Ochoa-Zarzosa
- Centro Multidisciplinario de Estudios en Biotecnología-Facultad de Medicina Veterinaria y Zootecnia, Universidad Michoacana de San Nicolás de Hidalgo, C.P. 58893, Morelia, Michoacán, México
| | - Joel E López-Meza
- Centro Multidisciplinario de Estudios en Biotecnología-Facultad de Medicina Veterinaria y Zootecnia, Universidad Michoacana de San Nicolás de Hidalgo, C.P. 58893, Morelia, Michoacán, México
| | - Víctor Pecina-Quintero
- Unidad de Biotecnología, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Campo Experimental Bajío. C.P. 38110, Celaya, Guanajuato, México
| | - Carlos A Nuñez-Colín
- Programa de Biotecnología, Universidad de Guanajuato, Mutualismo #303, Col. La Suiza, C.P. 38060, Celaya, Guanajuato, México
| | - José L Anaya-López
- Unidad de Biotecnología, Instituto Nacional de Investigaciones Forestales Agrícolas y Pecuarias, Campo Experimental Bajío. C.P. 38110, Celaya, Guanajuato, México
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Singh AK, Singh R, Subramani R, Kumar R, Wankhede DP. Molecular Approaches to Understand Nutritional Potential of Coarse Cereals. Curr Genomics 2016; 17:177-92. [PMID: 27252585 PMCID: PMC4869005 DOI: 10.2174/1389202917666160202215308] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2015] [Revised: 06/26/2015] [Accepted: 06/29/2015] [Indexed: 01/01/2023] Open
Abstract
Coarse grains are important group of crops that constitutes staple food for large population residing primarily in the arid and semi-arid regions of the world. Coarse grains are designated as nutri-cereals as they are rich in essential amino acids, minerals and vitamins. In spite of having several nutritional virtues in coarse grain as mentioned above, there is still scope for improvement in quality parameters such as cooking qualities, modulation of nutritional constituents and reduction or elimination of anti-nutritional factors. Besides its use in traditional cooking, coarse grains have been used mainly in the weaning food preparation and other malted food production. Improvement in quality parameters will certainly increase consumer's preference for coarse grains and increase their demand. The overall genetic gain in quality traits of economic importance in the cultivated varieties will enhance their industrial value and simultaneously increase income of farmers growing these varieties. The urgent step for improvement of quality traits in coarse grains requires a detailed understanding of molecular mechanisms responsible for varied level of different nutritional contents in different genotypes of these crops. In this review we have discussed the progresses made in understanding of coarse grain biology with various omics tool coupled with modern breeding approaches and the current status with regard to our effort towards dissecting traits related to improvement of quality and nutritional constituents of grains.
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Affiliation(s)
- Amit Kumar Singh
- Division of Genomic Resources, ICAR- National Bureau of Plant Genetic Resources, New Delhi, India
| | - Rakesh Singh
- Division of Genomic Resources, ICAR- National Bureau of Plant Genetic Resources, New Delhi, India
| | - Rajkumar Subramani
- Division of Genomic Resources, ICAR- National Bureau of Plant Genetic Resources, New Delhi, India
| | - Rajesh Kumar
- Division of Genomic Resources, ICAR- National Bureau of Plant Genetic Resources, New Delhi, India
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Preparation andIn VitroRelease of Drug-Loaded Microparticles for Oral Delivery Using Wholegrain Sorghum Kafirin Protein. INT J POLYM SCI 2015. [DOI: 10.1155/2015/343647] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Kafirin microparticles have been proposed as an oral nutraceutical and drug delivery system. This study investigates microparticles formed with kafirin extracted from white and raw versus cooked red sorghum grains as an oral delivery system. Targeted delivery to the colon would be beneficial for medication such as prednisolone, which is used in the management of inflammatory bowel disease. Therefore, prednisolone was loaded into microparticles of kafirin from the different sources using phase separation. Differences were observed in the protein content,in vitroprotein digestibility, and protein electrophoretic profile of the various sources of sorghum grains, kafirin extracts, and kafirin microparticles. For all of the formulations, the majority of the loaded prednisolone was not released inin vitroconditions simulating the upper gastrointestinal tract, indicating that most of the encapsulated drug could reach the target area of the lower gastrointestinal tract. This suggests that these kafirin microparticles may have potential as a colon-targeted nutraceutical and drug delivery system.
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Cremer JE, Bean SR, Tilley MM, Ioerger BP, Ohm JB, Kaufman RC, Wilson JD, Innes DJ, Gilding EK, Godwin ID. Grain sorghum proteomics: integrated approach toward characterization of endosperm storage proteins in kafirin allelic variants. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2014; 62:9819-9831. [PMID: 25177767 DOI: 10.1021/jf5022847] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Grain protein composition determines quality traits, such as value for food, feedstock, and biomaterials uses. The major storage proteins in sorghum are the prolamins, known as kafirins. Located primarily on the periphery of the protein bodies surrounding starch, cysteine-rich β- and γ-kafirins may limit enzymatic access to internally positioned α-kafirins and starch. An integrated approach was used to characterize sorghum with allelic variation at the kafirin loci to determine the effects of this genetic diversity on protein expression. Reversed-phase high performance liquid chromatography and lab-on-a-chip analysis showed reductions in alcohol-soluble protein in β-kafirin null lines. Gel-based separation and liquid chromatography-tandem mass spectrometry identified a range of redox active proteins affecting storage protein biochemistry. Thioredoxin, involved in the processing of proteins at germination, has reported impacts on grain digestibility and was differentially expressed across genotypes. Thus, redox states of endosperm proteins, of which kafirins are a subset, could affect quality traits in addition to the expression of proteins.
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Affiliation(s)
- Julia E Cremer
- School of Agriculture and Food Sciences and ⊥Institute for Molecular Bioscience, The University of Queensland , St Lucia, Brisbane, QLD 4072, Australia
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Cremer JE, Liu L, Bean SR, Ohm JB, Tilley M, Wilson JD, Kaufman RC, Vu TH, Gilding EK, Godwin ID, Wang D. Impacts of Kafirin Allelic Diversity, Starch Content, and Protein Digestibility on Ethanol Conversion Efficiency in Grain Sorghum. Cereal Chem 2014. [DOI: 10.1094/cchem-04-13-0068-r] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Julia E. Cremer
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
- Corresponding author. Phone: +61-3365-2141. Fax: +61-3365-1177. E-mail:
| | - Liman Liu
- Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66506, U.S.A
| | - Scott R. Bean
- U.S. Department of Agriculture, Agriculture Research Service (USDA-ARS), Center for Grain and Animal Health Research, Manhattan, KS 66502, U.S.A. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
| | - Jae-Bom Ohm
- USDA-ARS Cereal Crops Research Unit, Fargo, ND 58102, U.S.A
| | - Michael Tilley
- U.S. Department of Agriculture, Agriculture Research Service (USDA-ARS), Center for Grain and Animal Health Research, Manhattan, KS 66502, U.S.A. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
| | - Jeff D. Wilson
- U.S. Department of Agriculture, Agriculture Research Service (USDA-ARS), Center for Grain and Animal Health Research, Manhattan, KS 66502, U.S.A. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
| | - Rhett C. Kaufman
- U.S. Department of Agriculture, Agriculture Research Service (USDA-ARS), Center for Grain and Animal Health Research, Manhattan, KS 66502, U.S.A. Names are necessary to report factually on available data; however, the USDA neither guarantees nor warrants the standard of the product, and use of the name by the USDA implies no approval of the product to the exclusion of others that may also be suitable
| | - Thanh H. Vu
- Department of Grain Science and Industry, Kansas State University, Manhattan, KS 66506, U.S.A
| | - Edward K. Gilding
- Institute for Molecular Bioscience, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Ian D. Godwin
- School of Agriculture and Food Sciences, The University of Queensland, St. Lucia, Brisbane, QLD 4072, Australia
| | - Donghai Wang
- Department of Biological and Agricultural Engineering, Kansas State University, Manhattan, KS 66506, U.S.A
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18
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Grootboom AW, Mkhonza NL, Mbambo Z, O'Kennedy MM, da Silva LS, Taylor J, Taylor JRN, Chikwamba R, Mehlo L. Co-suppression of synthesis of major α-kafirin sub-class together with γ-kafirin-1 and γ-kafirin-2 required for substantially improved protein digestibility in transgenic sorghum. PLANT CELL REPORTS 2014; 33:521-537. [PMID: 24442398 DOI: 10.1007/s00299-013-1556-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2013] [Revised: 12/04/2013] [Accepted: 12/18/2013] [Indexed: 06/03/2023]
Abstract
KEY MESSAGE Co-suppressing major kafirin sub-classes is fundamental to improved protein digestibility and nutritional value of sorghum. The improvement is linked to an irregularly invaginated phenotype of protein bodies. ABSTRACT The combined suppression of only two genes, γ kafirin-1 (25 kDa) and γ-kafirin-2 (50 kDa), significantly increases sorghum kafirin in vitro digestibility. Co-suppression of a third gene, α-kafirin A1 (25 kDa), in addition to the two genes increases the digestibility further. The high-digestibility trait has previously only been obtained either through the co-suppression of six kafirin genes (α-A1, 25 kDa; α-B1, 19 kDa; α-B2, 22 kDa; γ-kaf1, 27 kDa; γ-kaf 2, 50 kDa; and δ-kaf 2, 18 kDa) or through random chemical-induced mutations (for example, the high protein digestibility mutant). We present further evidence that suppressing just three of these genes alters kafirin protein cross-linking and protein body microstructure to an irregularly invaginated phenotype. The irregular invaginations are consistent with high pepsin enzyme accessibility and hence high digestibility. The approach we adopted towards increasing sorghum protein digestibility appears to be an effective tool in improving the status of sorghum as a principal supplier of energy and protein in poor communities residing in marginal agro-ecological zones of Africa.
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Affiliation(s)
- Andile W Grootboom
- CSIR/BioSciences, Meiring Naude Road, Brummeria, Pretoria, 0001, South Africa
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19
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Allelic variation at a single gene increases food value in a drought-tolerant staple cereal. Nat Commun 2013; 4:1483. [PMID: 23403584 DOI: 10.1038/ncomms2450] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2012] [Accepted: 01/04/2013] [Indexed: 11/08/2022] Open
Abstract
The production of adequate agricultural outputs to support the growing human population places great demands on agriculture, especially in light of ever-greater restrictions on input resources. Sorghum is a drought-adapted cereal capable of reliable production where other cereals fail, and thus represents a good candidate to address food security as agricultural inputs of water and arable land grow scarce. A long-standing issue with sorghum grain is that it has an inherently lower digestibility. Here we show that a low-frequency allele type in the starch metabolic gene, pullulanase, is associated with increased digestibility, regardless of genotypic background. We also provide evidence that the beneficial allele type is not associated with deleterious pleiotropic effects in the modern field environment. We argue that increasing the digestibility of an adapted crop is a viable way forward towards addressing food security while maximizing water and land-use efficiency.
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20
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Encapsulation of hydrocortisone and mesalazine in zein microparticles. Pharmaceutics 2013; 5:277-93. [PMID: 24300451 PMCID: PMC3834950 DOI: 10.3390/pharmaceutics5020277] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 04/29/2013] [Accepted: 05/03/2013] [Indexed: 12/26/2022] Open
Abstract
Zein was investigated for use as an oral-drug delivery system by loading prednisolone into zein microparticles using coacervation. To investigate the adaptability of this method to other drugs, zein microparticles were loaded with hydrocortisone, which is structurally related to prednisolone; or mesalazine, which is structurally different having a smaller LogP and ionizable functional groups. Investigations into the in vitro digestibility, and the electrophoretic profile of zein, and zein microparticles were conducted to shed further insight on using this protein as a drug delivery system. Hydrocortisone loading into zein microparticles was comparable with that reported for prednisolone, but mesalazine loading was highly variable. Depending on the starting quantities of hydrocortisone and zein, the average amount of microparticles equivalent to 4 mg hydrocortisone, (a clinically used dose), ranged from 60–115 mg, which is realistic and practical for oral dosing. Comparatively, an average of 2.5 g of microparticles was required to deliver 250 mg of mesalazine (a clinically used dose), so alternate encapsulation methods that can produce higher and more precise mesalazine loading are required. In vitro protein digestibility revealed that zein microparticles were more resistant to digestion compared to the zein raw material, and that individual zein peptides are not preferentially coacervated into the microparticles. In combination, these results suggest that there is potential to formulate a delivery system based on zein microparticles made using specific subunits of zein that is more resistant to digestion as starting material, to deliver drugs to the lower gastrointestinal tract.
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21
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Kumar T, Dweikat I, Sato S, Ge Z, Nersesian N, Chen H, Elthon T, Bean S, Ioerger BP, Tilley M, Clemente T. Modulation of kernel storage proteins in grain sorghum (Sorghum bicolor (L.) Moench). PLANT BIOTECHNOLOGY JOURNAL 2012; 10:533-544. [PMID: 22353344 DOI: 10.1111/j.1467-7652.2012.00685.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Sorghum prolamins, termed kafirins, are categorized into subgroups α, β, and γ. The kafirins are co-translationally translocated to the endoplasmic reticulum (ER) where they are assembled into discrete protein bodies that tend to be poorly digestible with low functionality in food and feed applications. As a means to address the issues surrounding functionality and digestibility in sorghum, we employed a biotechnology approach that is designed to alter protein body structure, with the concomitant synthesis of a co-protein in the endosperm fraction of the grain. Wherein perturbation of protein body architecture may provide a route to impact digestibility by reducing disulphide bonds about the periphery of the body, while synthesis of a co-protein, with known functionality attributes, theoretically could impact structure of the protein body through direct association and/or augment end-use applications of sorghum flour by stabilizing ß-sheet formation of the kafirins in sorghum dough preparations. This in turn may improve viscoelasticity of sorghum dough. To this end, we report here on the molecular and phenotypic characterizations of transgenic sorghum events that are down-regulated in γ- and the 29-kDa α-kafirins and the expression of a wheat Dy10/Dx 5 hybrid high-molecular weight glutenin protein. The results demonstrate that down-regulation of γ-kafirin alone does not alter protein body formation or impacts protein digestibility of cooked flour samples. However, reduction in accumulation of a predicted 29-kDa α-kafirin alters the morphology of protein body and enhances protein digestibility in both raw and cooked samples.
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Affiliation(s)
- Tejinder Kumar
- Department of Agronomy and Horticulture, University of Nebraska-Lincoln, Lincoln, NE, USA
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22
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Shewayrga H, Sopade PA, Jordan DR, Godwin ID. Characterisation of grain quality in diverse sorghum germplasm using a Rapid Visco-Analyzer and near infrared reflectance spectroscopy. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2012; 92:1402-10. [PMID: 22131220 DOI: 10.1002/jsfa.4714] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Revised: 07/29/2011] [Accepted: 09/27/2011] [Indexed: 05/08/2023]
Abstract
BACKGROUND Twenty-two diverse sorghum landraces, classified as normal and opaque types obtained from Ethiopia, were characterised for grain quality parameters using near infra-red spectroscopy (NIRS), chemical and Rapid Visco-Analyzer (RVA) characteristics. RESULTS Protein content ranged from 77 to 182 g kg(-1), and starch content from 514 to 745 g kg(-1). The NIRS analysis indicated the pig faecal digestible energy range from 14.6 to 15.7 MJ kg(-1) as fed, and the ileal digestible energy range from 11.3 to 13.9 MJ kg(-1) as fed. The normal sorghums had higher digestible energy than the opaque sorghums, which exhibited lower RVA viscosities, and higher pasting temperatures and setback ratios. The RVA parameters were positively correlated with the starch content and negatively correlated with the protein content. The normal and opaque types formed two distinct groups based on principal component and cluster analyses. CONCLUSION The landraces were different for the various grain quality parameters with some landraces displaying unique RVA and NIRS profiles. This study will guide utilisation of the sorghum landraces in plant improvement programs, and provides a basis for further studies into how starch and other constituents behave in and affect the properties of these landraces.
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Affiliation(s)
- Hailemichael Shewayrga
- The University of Queensland, School of Agriculture and Food Sciences, QLD 4072, Australia.
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23
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Frère CH, Prentis PJ, Gilding EK, Mudge AM, Cruickshank A, Godwin ID. Lack of low frequency variants masks patterns of non-neutral evolution following domestication. PLoS One 2011; 6:e23041. [PMID: 21853065 PMCID: PMC3154263 DOI: 10.1371/journal.pone.0023041] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2011] [Accepted: 07/05/2011] [Indexed: 12/26/2022] Open
Abstract
Detecting artificial selection in the genome of domesticated species can not only shed light on human history but can also be beneficial to future breeding strategies. Evidence for selection has been documented in domesticated species including maize and rice, but few studies have to date detected signals of artificial selection in the Sorghum bicolor genome. Based on evidence that domesticated S. bicolor and its wild relatives show significant differences in endosperm structure and quality, we sequenced three candidate seed storage protein (kafirin) loci and three candidate starch biosynthesis loci to test whether these genes show non-neutral evolution resulting from the domestication process. We found strong evidence of non-neutral selection at the starch synthase IIa gene, while both starch branching enzyme I and the beta kafirin gene showed weaker evidence of non-neutral selection. We argue that the power to detect consistent signals of non-neutral selection in our dataset is confounded by the absence of low frequency variants at four of the six candidate genes. A future challenge in the detection of positive selection associated with domestication in sorghum is to develop models that can accommodate for skewed frequency spectrums.
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Affiliation(s)
- Céline H Frère
- School of Agriculture and Food Sciences, The University of Queensland, St Lucia, Queensland, Australia.
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