Genome-wide association study for starch content and constitution in sorghum (Sorghum bicolor (L.) Moench)

Chen, Bingru; Wang, Chunyu; Wang, Ping; Zhu, Zhenxing; Ning, Xu; Guang-li, Shi; Yu, Miao; Nai, Wang; Li, Jihong; Hou, Jia-ming; Li, Shu-jie; Zhou, Yufei; Gao, Shijie; Lu, Xiaochun; Rui-dong, Huang

doi:10.1016/s2095-3119(19)62631-6

Cited by 45 publications

(30 citation statements)

References 46 publications

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“…For instance, GWAS for MLGs has been performed in oat (Asoro et al, 2013 ), barley (Houston et al, 2014 ), and durum wheat (Marcotuli et al, 2016 ), but the corresponding GWAS data for rice is missing. Despite the scarcity of reports of GWAS on β-glucans, data are available for starch as the dominant polysaccharide in cereal grains (Xu et al, 2018 ; Biselli et al, 2019 ; Chen et al, 2019 ). An understanding of the natural variability of β-glucans and starch in rice and their association with particular genetic loci could provide markers to enhance the nutritional value and industrial applications of specific rice accessions.…”

Section: Introductionmentioning

confidence: 99%

Genome-Wide Association Mapping of Mixed Linkage (1,3;1,4)-β-Glucan and Starch Contents in Rice Whole Grain

et al. 2021

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The glucan content of rice is a key factor defining its nutritional and economic value. Starch and its derivatives have many industrial applications such as in fuel and material production. Non-starch glucans such as (1,3;1,4)-β-D-glucan (mixed-linkage β-glucan, MLG) have many benefits in human health, including lowering cholesterol, boosting the immune system, and modulating the gut microbiome. In this study, the genetic variability of MLG and starch contents were analyzed in rice (Oryza sativa L.) whole grain, by performing a new quantitative analysis of the polysaccharide content of rice grains. The 197 rice accessions investigated had an average MLG content of 252 μg/mg, which was negatively correlated with the grain starch content. A new genome-wide association study revealed seven significant quantitative trait loci (QTLs) associated with the MLG content and two QTLs associated with the starch content in rice whole grain. Novel genes associated with the MLG content were a hexose transporter and anthocyanidin 5,3-O-glucosyltransferase. Also, the novel gene associated with the starch content was a nodulin-like domain. The data pave the way for a better understanding of the genes involved in determining both MLG and starch contents in rice grains and should facilitate future plant breeding programs.

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Section: Introductionmentioning

confidence: 99%

Genome-Wide Association Mapping of Mixed Linkage (1,3;1,4)-β-Glucan and Starch Contents in Rice Whole Grain

et al. 2021

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“…The selected region around 45-54 Mb of Chr2 that had strong peaks for all but the kafir subpopulation have around 279 genes and seven quantitative trait loci (QTL) previously mapped to this region (Table 1). Among the seven QTLs in this region were three mapped for tannin by [65] and one each for amylose [66], panicle length [5], seedling survival [67], and anthracnose resistance [68]. Among the genes within this region, 24 genes had coiled-coil domains and showed significant enrichment based on the gene network analysis site, string-db.…”

Section: Resultsmentioning

confidence: 99%

Sorghum Association Panel Whole-Genome Sequencing Establishes Pivotal Resource for Dissecting Genomic Diversity

Boatwright

Sapkota

Jin

et al. 2021

Preprint

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Association mapping panels represent foundational resources for understanding the genetic basis of phenotypic diversity and serve to advance plant breeding by exploring genetic variation across diverse accessions with distinct histories of evolutionary divergence and local adaptation. We report the whole-genome sequencing (WGS) of 400 sorghum [Sorghum bicolor (L.) Moench] accessions from the Sorghum Association Panel (SAP) at an average coverage of 38X (25X-72X), enabling the development of a high-density genomic-marker set of 43,983,694 variants including SNPs (~38 million), indels (~5 million), and CNVs (~170,000). We observe slightly more deletions among indels and a much higher prevalence of deletions among copy number variants compared to insertions. This new marker set enabled the identification of several putatively novel genomic associations for plant height and tannin content, which were not identified when using previous lower-density marker sets. WGS identified and scored variants in 5 kb bins where available genotyping-by-sequencing (GBS) data captured no variants, with half of all bins in the genome falling into this category. The predictive ability of genomic best unbiased linear predictor (GBLUP) models was increased by an average of 30% by using WGS markers rather than GBS markers. We identified 18 selection peaks across subpopulations that formed due to evolutionary divergence during domestication, and we found six Fst peaks resulting from comparisons between converted lines and breeding lines within the SAP that were distinct from the peaks associated with historic selection. This population has been and continues to serve as a significant public resource for sorghum research and demonstrates the value of improving upon existing genomic resources.

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“…There are no AR detected in wheat straw leachate, whereas a tendency of AR release is observed in rice hull leachate. In fact, AR are abundant in rice hull and sorghum stalk cells 39–41 . These AR tend to enter the leachate than those combination with the cell wall in the low‐temperature region.…”

Section: Resultsmentioning

confidence: 99%

“…In fact, AR are abundant in rice hull and sorghum stalk cells. [39][40][41] These AR tend to enter the leachate than those combination with the cell wall in the F I G U R E 2 Mass spectrometry results of corn stalk leachate low-temperature region. Otherwise, leachate with the highest content of AL changes from corn stalk to sorghum stalk leachate, in which the relative content is overwhelmingly higher than the other three leachates at this temperature.…”

Section: Organics In the Leachatesmentioning

confidence: 99%

A study on benzene release during water washing of biomass

Deng

Long

et al. 2020

Asia-Pacific J Chem Eng

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Water washing can effectively remove Na, K, and Cl in biomass, which can cause fouling, slagging, and corrosion during thermal conversion process of biomass fuels. However, it is necessary to dispose the leachates appropriately after water washing. Characterization of organic matters in leachates should be performed first, which is beneficial to find an effective way to dispose the leachate. In this study, four biomass materials are washed with the deionized water at 30 C, 60 C, and 90 C. The release of toluene and styrene is studied. The results show that yields of organic matters for corn stalk and wheat straw are the highest relatively, of which the eventual values are 8% and 15%, respectively. Less toluene and styrene are released at 30-60 C than that at 90 C for wheat straw. But the release of toluene and styrene in rice hull leachate shows the opposite trend. The concentration of styrene in leachates reaches a minimum value at 60 C. The corresponding values are 0.017 mg L −1 for wheat straw and 0.15 mg L −1 for rice hull. But none is detected in corn stalk and sorghum stalk leachates. In addition, variations of toluene and styrene concentrations are obviously different with different washing temperatures.

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Genome-wide association study for starch content and constitution in sorghum (Sorghum bicolor (L.) Moench)

Cited by 45 publications

References 46 publications

Genome-Wide Association Mapping of Mixed Linkage (1,3;1,4)-β-Glucan and Starch Contents in Rice Whole Grain

Genome-Wide Association Mapping of Mixed Linkage (1,3;1,4)-β-Glucan and Starch Contents in Rice Whole Grain

Sorghum Association Panel Whole-Genome Sequencing Establishes Pivotal Resource for Dissecting Genomic Diversity

A study on benzene release during water washing of biomass

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