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  1. Article ; Online: Pilot-scale genome-wide association mapping in diverse sorghum germplasms identified novel genetic loci linked to major agronomic, root and stomatal traits.

    Ramalingam, Ajay Prasanth / Mohanavel, Williams / Kambale, Rohit / Rajagopalan, Veera Ranjani / Marla, Sandeep R / Prasad, P V Vara / Muthurajan, Raveendran / Perumal, Ramasamy

    Scientific reports

    2023  Volume 13, Issue 1, Page(s) 21917

    Abstract: This genome-wide association studies (GWAS) used a subset of 96 diverse sorghum accessions, constructed from a large collection of 219 accessions for mining novel genetic loci linked to major agronomic, root morphological and physiological traits. The ... ...

    Abstract This genome-wide association studies (GWAS) used a subset of 96 diverse sorghum accessions, constructed from a large collection of 219 accessions for mining novel genetic loci linked to major agronomic, root morphological and physiological traits. The subset yielded 43,452 high quality single nucleotide polymorphic (SNP) markers exhibiting high allelic diversity. Population stratification showed distinct separation between caudatum and durra races. Linkage disequilibrium (LD) decay was rapidly declining with increasing physical distance across all chromosomes. The initial 50% LD decay was ~ 5 Kb and background level was within ~ 80 Kb. This study detected 42 significant quantitative trait nucleotide (QTNs) for different traits evaluated using FarmCPU, SUPER and 3VmrMLM which were in proximity with candidate genes related and were co-localized in already reported quantitative trait loci (QTL) and phenotypic variance (R
    MeSH term(s) Genome-Wide Association Study/methods ; Sorghum/genetics ; Plant Breeding ; Quantitative Trait Loci ; Phenotype ; Edible Grain/genetics ; Nucleotides ; Polymorphism, Single Nucleotide
    Chemical Substances Nucleotides
    Language English
    Publishing date 2023-12-08
    Publishing country England
    Document type Journal Article
    ZDB-ID 2615211-3
    ISSN 2045-2322 ; 2045-2322
    ISSN (online) 2045-2322
    ISSN 2045-2322
    DOI 10.1038/s41598-023-48758-2
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Large-Scale Non-Targeted Metabolomics Reveals Antioxidant, Nutraceutical and Therapeutic Potentials of Sorghum.

    Ramalingam, Ajay Prasanth / Mohanavel, Williams / Premnath, Ameena / Muthurajan, Raveendran / Prasad, P V Vara / Perumal, Ramasamy

    Antioxidants (Basel, Switzerland)

    2021  Volume 10, Issue 10

    Abstract: Sorghum is one of the most important food and feed cereal crops and has been gaining industrial importance in recent years for its biofuel, nutraceutical and antioxidant values. A genetic profile variation study was undertaken for the accumulation of ... ...

    Abstract Sorghum is one of the most important food and feed cereal crops and has been gaining industrial importance in recent years for its biofuel, nutraceutical and antioxidant values. A genetic profile variation study was undertaken for the accumulation of phytochemicals in 61 diverse sorghum accessions differing in their growth habitat and grain color through non-targeted Gas Chromatography-Mass Spectrometry (GC-MS/MS) analysis. Mass Spectrometry-Data Independent AnaLysis (MS-DIAL) and MetaboAnalyst identified 221 metabolites belonging to 27 different phytochemicals. Tropical and temperate sorghums were distinct in their metabolic profiles with minimum overlaps, and 51 different metabolites were crucial in differentiating the two groups. Temperate sorghums had the ability to accumulate more of phenolic acids, phytosterols, flavonoids, carotenoids, and tropical sorghums for stress-related amino acids, sugars and fatty acids. Grain-color-based Partial Least Square-Discriminant Analysis (PLS-DA) analysis identified 94 Variable Importance in Projections (VIP) metabolites containing majority of flavonoids, phenylpropanoids and phytosterols. This study identified two sorghum lines (IS 7748 and IS 14861) with rich amounts of antioxidants (catechins and epicatechins) belonging to the group of condensed tannins that otherwise do not accumulate commonly in sorghum. Out of 13 metabolic pathways identified, flavonoid biosynthesis showed the highest expression. This study provided new opportunities for developing biofortified sorghum with enhanced nutraceutical and therapeutics through molecular breeding and metabolic engineering.
    Language English
    Publishing date 2021-09-23
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2704216-9
    ISSN 2076-3921
    ISSN 2076-3921
    DOI 10.3390/antiox10101511
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: Large-Scale Non-Targeted Metabolomics Reveals Antioxidant, Nutraceutical and Therapeutic Potentials of Sorghum

    Ramalingam, Ajay Prasanth / Mohanavel, Williams / Premnath, Ameena / Muthurajan, Raveendran / Prasad, P. V. Vara / Perumal, Ramasamy

    Antioxidants. 2021 Sept. 23, v. 10, no. 10

    2021  

    Abstract: Sorghum is one of the most important food and feed cereal crops and has been gaining industrial importance in recent years for its biofuel, nutraceutical and antioxidant values. A genetic profile variation study was undertaken for the accumulation of ... ...

    Abstract Sorghum is one of the most important food and feed cereal crops and has been gaining industrial importance in recent years for its biofuel, nutraceutical and antioxidant values. A genetic profile variation study was undertaken for the accumulation of phytochemicals in 61 diverse sorghum accessions differing in their growth habitat and grain color through non-targeted Gas Chromatography–Mass Spectrometry (GC-MS/MS) analysis. Mass Spectrometry–Data Independent AnaLysis (MS-DIAL) and MetaboAnalyst identified 221 metabolites belonging to 27 different phytochemicals. Tropical and temperate sorghums were distinct in their metabolic profiles with minimum overlaps, and 51 different metabolites were crucial in differentiating the two groups. Temperate sorghums had the ability to accumulate more of phenolic acids, phytosterols, flavonoids, carotenoids, and tropical sorghums for stress-related amino acids, sugars and fatty acids. Grain-color-based Partial Least Square–Discriminant Analysis (PLS-DA) analysis identified 94 Variable Importance in Projections (VIP) metabolites containing majority of flavonoids, phenylpropanoids and phytosterols. This study identified two sorghum lines (IS 7748 and IS 14861) with rich amounts of antioxidants (catechins and epicatechins) belonging to the group of condensed tannins that otherwise do not accumulate commonly in sorghum. Out of 13 metabolic pathways identified, flavonoid biosynthesis showed the highest expression. This study provided new opportunities for developing biofortified sorghum with enhanced nutraceutical and therapeutics through molecular breeding and metabolic engineering.
    Keywords antioxidants ; biofortification ; biofuels ; biosynthesis ; carotenoids ; color ; dietary supplements ; flavanols ; gas chromatography-mass spectrometry ; genetic profile ; habitats ; metabolites ; metabolomics ; phenylpropanoids ; phytosterols ; therapeutics
    Language English
    Dates of publication 2021-0923
    Publishing place Multidisciplinary Digital Publishing Institute
    Document type Article
    ZDB-ID 2704216-9
    ISSN 2076-3921
    ISSN 2076-3921
    DOI 10.3390/antiox10101511
    Database NAL-Catalogue (AGRICOLA)

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  4. Article: Pilot scale genome wide association mapping identified novel loci for grain yield traits in rice

    Sundaramoorthy, Mohan / Ramasamy, Shobica Priya / Rajagopalan, Veera Ranjani / Ramalingam, Ajay Prasanth / Ayyenar, Bharathi / Mohanavel, Vignesh / Narayanan, Manikanda Boopathi / Muthurajan, Raveendran

    Plant Physiology Reports. 2022 Mar., v. 27, no. 1

    2022  

    Abstract: Success of crop improvement program depends on systematic exploitation of genetic diversity. Improved understanding on the genetic basis of traits contributing to yield and stress tolerance is necessary to accelerate development of resilient crop ... ...

    Abstract Success of crop improvement program depends on systematic exploitation of genetic diversity. Improved understanding on the genetic basis of traits contributing to yield and stress tolerance is necessary to accelerate development of resilient crop varieties. In this study, a subset of 102 diverse rice accessions was assembled after analysing population structure (K = 8) and removal of admixtures from a larger set of IRRI 3 K panel. The constructed subset showed adequate diversity in yield related traits. Genome wide association analysis using the genome wide SNP markers identified a total of 42 SNPs showing significant association with major yield traits. Out of the identified SNPs, 20 SNPs were found to be present in QTL or genes reported previously for yield traits. Remaining 22 loci were found to be novel and needs validation. Elite genetic stocks with increased yield potential will permit us to dissect out the physiological and molecular basis of spikelet number per panicle in rice and thereby accelerate yield enhancement in rice through haplotype based breeding.
    Keywords genetic variation ; genome-wide association study ; grain yield ; haplotypes ; panicles ; plant physiology ; population structure ; rice ; spikelets ; stress tolerance
    Language English
    Dates of publication 2022-03
    Size p. 11-21.
    Publishing place Springer India
    Document type Article
    ZDB-ID 3010000-8
    ISSN 2662-2548 ; 2662-253X
    ISSN (online) 2662-2548
    ISSN 2662-253X
    DOI 10.1007/s40502-021-00641-w
    Database NAL-Catalogue (AGRICOLA)

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