Identification of a major quantitative trait locus for ear size induced by space flight in sweet corn

Yu, Yongtao; Li, G K; Yang, Zhe; Hu, Jiangsheng; Zheng, Jingsheng; Qi, Xitao

doi:10.4238/2014.april.17.3

Cited by 6 publications

(8 citation statements)

References 26 publications

(32 reference statements)

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“…1), and its progenitor, silunuo, had many primordial traits similar to teosinte (two ranks with one rows per rank) (Zeng et al 1981). Some studies showed that the alleles that increase the ERN originated equally from both parents (Li et al 2007Upadyayula et al 2006;Veldboom and Lee 1994), on the contrary, any decreasing effects of QTLs on the ERN were attributed to the parent (SICAU1212) with the lower ERN in this study, which agrees with the findings obtained from (Briggs et al 2007;Stec 1991, 1993) and those from a part of maize 9 maize segregations (Cai et al 2014;Tian et al 2014;Yu et al 2014). One possible reason elucidating the above phenomenon is that there is not more variation on ERN within modern maize germplasms, namely due to limited variation in the ERN.…”

Section: Discussionsupporting

confidence: 91%

“…For decades, with the rapid development of molecular genetic marker technology and quantitative genetics, diverse maize populations have been used to detect QTLs for ERN, which contribute to maize diversification, such as F 2 (Yu et al 2014), F 2:3 (Cai et al 2014;Choe and Rocheford 2012;Karen Sabadin et al 2008;Lu et al 2011;Veldboom and Lee 1994;Yan et al 2006), F 2:4 (Beavis et al 1994), BC 1 S 1 (Upadyayula et al 2006), BC 2 F 2 (Li et al 2007, BC 3 F 2:3 , BC 5 F 2:3 (Tian et al 2014), IF 2 (Tang et al 2010), CSSLs (Li et al 2014a) and RILs (Austin and Lee 1996;Guo et al 2008;Liu et al 2010). To date, few consistent QTL having large effects on ERN have been detected across diverse populations or environments.…”

Section: Introductionmentioning

confidence: 99%

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Identification of QTL for ear row number and two-ranked versus many-ranked ear in maize across four environments

et al. 2015

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Ear row number (ERN) is not only a key trait involved in maize (Zea mays L.) evolution but also an important component directly related to grain yield. In this report, 325 recombinant inbred lines (RILs, F 6:7 ) derived from a cross between B73 with 16 rows and SICAU1212 with four rows (two-ranked with two rows per rank) were utilized to detect quantitative trait loci (QTL) associated with ERN and two-ranked versus many-ranked ears (TR). Compared to modern maize that formed approximately 8-20 rows, SICAU1212 with four rows was the extreme case. A total of 12 and 8 QTLs were associated with ERN and TR across four environments through single-environment mapping, respectively. Each QTL responsible for ERN explained 2.33-21.28 % of the phenotypic variation. And the TR variation contributed by individual TR QTL ranged from 2.09 to 12.99 %. Notably, only three QTLs, qERN2-1 (bin 2.02), qERN8-1 (bin 8.02) and qERN8-2 (bin 8.04), were consistently detected in each environment and by joint analysis among all environments, which simultaneously influenced ERN and TR. One of the three QTLs, qERN8-1 was also identified as interacting with environment. In addition, nine pairs of significant epistatic interactions (two for ERN and seven for TR) were detected among all QTLs. The epistasis between qTR2-1 and qTR8-1 was consistent in most environments. This present study may provide the understanding of the genetic basis of ERN and TR and a foundation for further fine-mapping of these common QTLs.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

Identification of QTL for ear row number and two-ranked versus many-ranked ear in maize across four environments

et al. 2015

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“…Detailed whole-genome and bioinformatics analyses have identified 142 MADS-box genes in the maize genome (12), about half of which have been functionally characterized (13). Plant MADS-box gene family members play diverse roles in plant growth and development, including modulating genes involved in flowering time regulation, floral organ and meristem development, formation of dehiscence zones, and fruit ripening, as well as embryo, leaf, and root development (14–20). Plant MADS-box genes also play important roles in response to biotic and abiotic stresses (21–23).…”

mentioning

confidence: 99%

Overexpression of zmm28 increases maize grain yield in the field

Lawit

Weers

et al. 2019

Proc. Natl. Acad. Sci. U.S.A.

107

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Increasing maize grain yield has been a major focus of both plant breeding and genetic engineering to meet the global demand for food, feed, and industrial uses. We report that increasing and extending expression of a maize MADS-box transcription factor gene, zmm28, under the control of a moderate-constitutive maize promoter, results in maize plants with increased plant growth, photosynthesis capacity, and nitrogen utilization. Molecular and biochemical characterization of zmm28 transgenic plants demonstrated that their enhanced agronomic traits are associated with elevated plant carbon assimilation, nitrogen utilization, and plant growth. Overall, these positive attributes are associated with a significant increase in grain yield relative to wild-type controls that is consistent across years, environments, and elite germplasm backgrounds.

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“…These genetic differentiations resulted from genomic changes during maize artificial or natural selection [22], which caused some important phenotypic variations and provided opportunities for breeders to develop new inbred lines by assembling different genomic segments. Using linkage analysis [23, 24] and the genome-wide association study (GWAS) method [25], genetic loci associated with complex traits have been identified, and some important genes have been confirmed by positional cloning [26]. Using a next-generation sequencing strategy, Lai et al identified 101 low sequence-diversity regions of the maize genome, and the results showed that only a few segments were retained during the formation of maize FPs [27].…”

Section: Introductionmentioning

confidence: 99%

Exploring Identity-By-Descent Segments and Putative Functions Using Different Foundation Parents in Maize

et al. 2016

PLoS ONE

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Maize foundation parents (FPs) play no-alternative roles in hybrid breeding because they were widely used in the development of new lines and hybrids. The combination of different identity-by-descent (IBD) segments and genes could account for the formation patterns of different FPs, and knowledge of these IBD regions would provide an extensive foundation for the development of new candidate FP lines in future maize breeding. In this paper, a panel of 304 elite lines derived from FPs, i.e., B73, 207, Mo17, and Huangzaosi (HZS), was collected and analyzed using 43,252 single nucleotide polymorphism (SNP) markers. Most IBD segments specific to particular FP groups were identified, including 116 IBD segments in B73, 105 in Mo17, 111 in 207, and 190 in HZS. In these regions, 423 quantitative trait nucleotides (QTNs) associated with 15 agronomic traits and 804 candidate genes were identified. Some known adaptation-related genes, e.g., dwarf8 and vgt1 in HZS, zcn8 and epc in Mo17, and ZmCCT in 207, were validated as being tightly linked to particular IBD segments. In addition, numerous new candidate genes were also identified. For example, GRMZM2G154278 in HZS, which belongs to the cell cycle control family, was closely linked to a QTN of the ear height/plant height (EH/PH) trait; GRMZM2G051943 in 207, which encodes an endochitinase precursor (EP) chitinase, was closely linked to a QTN for kernel density; and GRMZM2G170586 in Mo17 was closely linked to a QTN for ear diameter. Complex correlations among these genes were also found. Many IBD segments and genes were included in the formation of FP lines, and complex regulatory networks exist among them. These results provide new insights on the genetic basis of complex traits and provide new candidate IBD regions or genes for the improvement of special traits in maize production.

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Identification of a major quantitative trait locus for ear size induced by space flight in sweet corn

Cited by 6 publications

References 26 publications

Identification of QTL for ear row number and two-ranked versus many-ranked ear in maize across four environments

Identification of QTL for ear row number and two-ranked versus many-ranked ear in maize across four environments

Overexpression of zmm28 increases maize grain yield in the field

Exploring Identity-By-Descent Segments and Putative Functions Using Different Foundation Parents in Maize

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