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Kaur, S.

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Kaur
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Kaur, S.

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2016 - 201922020 - 20223
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    Validation of Novel spot blotch disease resistance alleles identified in unexplored wheat (Triticum aestivum L.) germplasm lines through KASP markers
    (BioMed Central, 2022) Kumar, S.; Pradhan, A.K.; Kumar, U.; Dhillon, G.S.; Kaur, S.; Neeraj Budhlakoti; Mishra, D.C.; Singh, A.K.; Singh, R.; Kumari, J.; Kumaran, V.V.; Mishra, V.K.; Bhati, P.; Das, S.; Chand, R.; Singh, K.; Kumar, S.
    Publication
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    Indian wheat genomics initiative for harnessing the potential of wheat germplasm resources for breeding disease-resistant, nutrient-dense, and climate-resilient cultivars
    (Frontiers, 2022) Kumar, S.; Jacob, S.R.; Mir, R.; Kumaran, V.V.; Kulwal, P.L.; Chandra, T.; Kaur, S.; Kumar, U.; Kumar, S.; Sharma, S.; Singh, R.; Sai Prasad, S.V.; Mahendru-Singh, A.; Singh, A.K.; Kumari, J.; Mahender Singh Saharan; Bhardwaj, S.; Prasad, M.; Kalia, S.; Singh, K.
    Publication
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    Genetic dissection uncovers genome-wide marker-trait associations for plant growth, yield, and yield-related traits under varying nitrogen levels in nested synthetic wheat introgression libraries
    (Frontiers, 2021) Sandhu, N.; Kaur, A.; Sethi, M.; Kaur, S.; Singh, V.; Sharma, A.R.; Bentley, A.R.; Barsby, T.; Chhuneja, P.
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    Novel structural and functional motifs in cellulose synthase (CesA) genes of bread wheat (Triticum aestivum, L.)
    (Public Library of Science, 2016) Kaur, S.; Dhugga, K.; Gill, K.S.; Singh, J.
    Cellulose is the primary determinant of mechanical strength in plant tissues. Late-season lodging is inversely related to the amount of cellulose in a unit length of the stem. Wheat is the most widely grown of all the crops globally, yet information on its CesA gene family is limited. We have identified 22 CesA genes from bread wheat, which include homoeologs from each of the three genomes, and named them as TaCesAXA, TaCesAXB or TaCesAXD, where X denotes the gene number and the last suffix stands for the respective genome. Sequence analyses of the CESA proteins from wheat and their orthologs from barley, maize, rice, and several dicot species (Arabidopsis, beet, cotton, poplar, potato, rose gum and soybean) revealed motifs unique to monocots (Poales) or dicots. Novel structural motifs CQIC and SVICEXWFA were identified, which distinguished the CESAs involved in the formation of primary and secondary cell wall (PCW and SCW) in all the species. We also identified several new motifs specific to monocots or dicots. The conserved motifs identified in this study possibly play functional roles specific to PCW or SCW formation. The new insights from this study advance our knowledge about the structure, function and evolution of the CesA family in plants in general and wheat in particular. This information will be useful in improving culm strength to reduce lodging or alter wall composition to improve biofuel production.
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    Genome-Wide Association study reveals novel genes associated with culm cellulose content in bread wheat (Triticum aestivum, L.)
    (Frontiers, 2017) Kaur, S.; Xu Zhang; Mohan, A.; Dong, H.; Vikram, P.; Singh, S.; Zhiwu Zhang; Gill, K.S.; Dhugga, K.; Singh, J.
    Plant cell wall formation is a complex, coordinated and developmentally regulated process. Cellulose is the most dominant constituent of plant cell walls. Because of its paracrystalline structure, cellulose is the main determinant of mechanical strength of plant tissues. As the most abundant polysaccharide on earth, it is also the focus of cellulosic biofuel industry. To reduce culm lodging in wheat and for improved ethanol production, delineation of the variation for stem cellulose content could prove useful. We present results on the analysis of the stem cellulose content of 288 diverse wheat accessions and its genome-wide association study (GWAS). Cellulose concentration ranged from 35 to 52% (w/w). Cellulose content was normally distributed in the accessions around a mean and median of 45% (w/w). Genome-wide marker-trait association study using 21,073 SNPs helped identify nine SNPs that were associated (p < 1E-05) with cellulose content. Four strongly associated (p < 8.17E-05) SNP markers were linked to wheat unigenes, which included β-tubulin, Auxin-induced protein 5NG4, and a putative transmembrane protein of unknown function. These genes may be directly or indirectly involved in the formation of cellulose in wheat culms. GWAS results from this study have the potential for genetic manipulation of cellulose content in bread wheat and other small grain cereals to enhance culm strength and improve biofuel production.
    Publication