QTL analysis for phytonutrient compounds and the antioxidant molecule in mustard (Brassica juncea L.)

Gupta, Shilpa; Sangha, Manjeet Kaur; Kaur, Gurpreet; Gupta, Manik; Kumar, Hitesh; Banga, S. S.

doi:10.1007/s10681-014-1204-3

Cited by 14 publications

(3 citation statements)

References 64 publications

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“…Many QTLs ( Table 1 ) have been reported for oil content in diploid and amphiploid species of Brassica such as Brassica napus ( 87 , 89 – 91 , 94 , 99 ) and Brassica carinata ( 102 ). In Brassica juncea , QTLs for glucosinolate, gluconapin, sinigrin, glucoiberin, gluconeobrasscin, gluconasturtin, and tocopherol content were mapped in RILs on chromosomes (J18, J1, J4, J9, J7, and J6, respectively) using SSR markers ( 103 ). Researchers have developed “canola-grade” mustard varieties containing low levels of erucic acid and glucosinolates.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Nutritional Quality of Major Food Crops Through Conventional and Genomics-Assisted Breeding

et al. 2020

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Nutritional stress is making over two billion world population malnourished. Either our commercially cultivated varieties of cereals, pulses, and oilseed crops are deficient in essential nutrients or the soils in which these crops grow are becoming devoid of minerals. Unfortunately, our major food crops are poor sources of micronutrients required for normal human growth. To overcome the problem of nutritional deficiency, greater emphasis should be laid on the identification of genes/quantitative trait loci (QTLs) pertaining to essential nutrients and their successful deployment in elite breeding lines through marker-assisted breeding. The manuscript deals with information on identified QTLs for protein content, vitamins, macronutrients, micro-nutrients, minerals, oil content, and essential amino acids in major food crops. These QTLs can be utilized in the development of nutrient-rich crop varieties. Genome editing technologies that can rapidly modify genomes in a precise way and will directly enrich the nutritional status of elite varieties could hold a bright future to address the challenge of malnutrition.

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Section: Introductionmentioning

confidence: 99%

Enhancing the Nutritional Quality of Major Food Crops Through Conventional and Genomics-Assisted Breeding

et al. 2020

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“…In addition to necrotrophic resistance, these compounds also alter resistance to biotrophic pathogens, insects and aphids indicating that they are likely key players in numerous biotic interactions of Brassica plants ( Kroymann and Mitchell-Olds, 2005 ; Pfalz et al, 2007 , 2009 ; Fan et al, 2011 ; Weis et al, 2014 ; Kerwin et al, 2015 ). As a result of this role in numerous different biotic interactions, GSLs show extensive genetic variation in all tested Brassica’s but the link between this natural genetic variation and quantitative resistance to pathogens including B. cinerea has not been queried ( Kliebenstein et al, 2002a , b ; Wentzell et al, 2007 ; Chan et al, 2010 ; Velasco et al, 2011 ; Feng et al, 2012 ; Zou et al, 2013 ; Rahman et al, 2014 ; Brown et al, 2015 ; Gupta et al, 2015 ; Rout et al, 2015 ).…”

Section: Introductionmentioning

confidence: 99%

Isolate Dependency of Brassica rapa Resistance QTLs to Botrytis cinerea

et al. 2016

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Generalist necrotrophic pathogens including Botrytis cinerea cause significant yield and financial losses on Brassica crops. However, there is little knowledge about the mechanisms underlying the complex interactions encoded by both host and pathogen genomes in this interaction. This potentially includes multiple layers of plant defense and pathogen virulence mechanisms that could complicate in breeding broad spectrum resistance within Brassica species. Glucosinolates (GSLs) are a diverse group of defense metabolites that play a key role in interaction between Brassica and biotic attackers. In this study, we utilized a collection of diverse B. cinerea isolates to investigate resistance within the Brassica rapa R500 × IMB211 recombinant inbred line population. We tested variation on lesion development and glucosinolate accumulation in parental lines and all population lines. We then mapped quantitative trait loci (QTL) for both resistances to B. cinerea and defense metabolites in this population. Phenotypic analysis and QTL mapping demonstrate that the genetic basis of resistance to B. cinerea in B. rapa is isolate specific and polygenic with transgressive segregation that both parents contribute resistance alleles. QTLs controlling defensive GSLs are highly dependent on pathogen infection. An overlap of two QTLs identified between resistance to B. cinerea and defense metabolites also showed isolate specific effects. This work suggests that directly searching for resistance loci may not be the best approach at improving resistance in B. rapa to necrotrophic pathogen.

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“…From the few quantitative data reported in the literature, it seems that the European-type Canadian cultivars of Brassica juncea are characterized by relatively low levels of GLSs (26 to 155 mg/100 g FW) [94,95] when compared to cultivars grown in Asia (208 to 354 mg/100 g FW) [96,97], paralleling well-established differences in the composition of the seeds [93].…”

Section: Mustard Greens (Brassica Juncea)mentioning

confidence: 96%