Quantitative trait loci for resistance to Maize rayado fino virus

Mendoza, José Luis Zambrano; Jones, Mark W.; Francis, David M.; Tomás, A. Easdale; Redinbaugh, Margaret G.

doi:10.1007/s11032-014-0091-6

Cited by 9 publications

(4 citation statements)

References 27 publications

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“…In addition, the search, development, and use of maize hybrids tolerant to corn stunt disease is no less important than efforts against other key pests. [70][71][72][73][74] Accordingly, the visual stunt rating scale developed here may be helpful, like the damage scales used for other key maize pests. 75 Some maize stunt rating scales have been proposed and utilized [76][77][78][79][80] despite lacking clear validation with published empirical data supporting the correlation with corn yield.…”

Section: Discussionmentioning

confidence: 99%

“…These coordinated actions should be pursued to avoid the rapid development of insecticide resistance in corn leafhopper populations. In addition, the search, development, and use of maize hybrids tolerant to corn stunt disease is no less important than efforts against other key pests 70–74 . Accordingly, the visual stunt rating scale developed here may be helpful, like the damage scales used for other key maize pests 75 .…”

Section: Discussionmentioning

confidence: 99%

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Insecticide seed treatment against corn leafhopper: helping protect grain yield in critical plant growth stages

Neves

Foresti²,

Silva³

et al. 2022

Pest Management Science

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BACKGROUND The corn leafhopper, Dalbulus maidis (Hemiptera: Cicadellidae), spreads maize stunt pathogens and requires timely and effective crop protection. We determined the interaction between maize phenology and the vector feeding/infection period by stunt pathogens with the residual efficacy of neonicotinoid insecticidal seed treatments. Greenhouse‐ and field‐grown maize plants, seed‐treated with clothianidin or imidacloprid insecticides, were infested during seven growth stages with corn leafhoppers reared under controlled conditions on maize plants displaying infection symptoms by both spiroplasma (corn stunt spiroplasma, Spiroplasma kunkelii) and phytoplasma (maize bushy phytoplasma) pathogens. RESULTS In the greenhouse and field settings, seed treatment reduced the stunt disease symptoms and corn yield loss during the VE–V4 maize growth stages and caused no phytotoxicity. The neonicotinoid seed treatment reduced 20–60% of the yield losses from the corn stunt disease until the V4 growth stage. Infestation by infective corn leafhoppers in the V12 maize growth stage caused a 25–30% yield loss irrespective of seed treatment, yet no stunt disease symptom was evident. Nonetheless, corn yield losses and visual stunt symptoms as rated by a nine‐category ordinal scale were strongly correlated (r = 0.79, P < 0.01). CONCLUSION These results reinforce that maize plants are more susceptible to leafhopper stunt disease during the VE–V4 growth stages (emergence to the fourth‐leaf stage). Seed treatment helps reduce the damage in the early growth stages (VE–V2), although supplemental control measures depending on leafhopper population density may be needed from VE–V12 to protect yield losses from the maize stunt condition. © 2021 Society of Chemical Industry.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Insecticide seed treatment against corn leafhopper: helping protect grain yield in critical plant growth stages

Neves

Foresti²,

Silva³

et al. 2022

Pest Management Science

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“…But each year yield decreases due to occurrence of different diseases. Maize dwarf mosaic disease is one of them which is caused by a series of viruses including Maize dwarf mosaic virus (MDMV), Maize chlorotic dwarf virus (MCDV), Sugarcane mosaic virus (SCMV), Johnsongrass mosaic virus (JGMV), Sorghum mosaic virus (SrMV), Zea mosaic virus (ZeMV) and Pennisetum mosaic virus (PenMV) (Zambrano et al, 2014, Stewart et al, 2012Stewart et al, 2013). All of them except MCDV are classified as the "sugarcane mosaic subgroup" of the virus genus Potyvirus, under the family Potyviridae (Balarabe et al, 2014, Haider et al, 2011, Mohammadi and Hajieghrari 2009, Shukla et al, 1992.…”

Section: Introductionmentioning

confidence: 99%

Molecular and pathological identification of maize genotypes having Wsm gene governing resistance against MDMV and MCDV

Rahman

Haque

Mondal

et al. 2018

J Bangladesh Agric Univ

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Maize is seriously affected by different viruses like Maize Dwarf Mosaic Virus (MDMV) and Maize Chlorotic Dwarf Virus (MCDV) throughout the world. In Bangladesh, no genotype has been identified yet as a source of resistant gene against MDMV and MCDV. The study was carried out with the objective to screen nine maize genotypes carrying Wsm gene using three sets of Single Sequence Repeat (SSR) marker. Maize plants were inoculated with viruses. Symptoms were scored at 7, 10 and 14 dpi (days post inoculation) to calculate infection percentage and Area Under Disease Progress Curve (AUDPC). The molecular result indicated that BHM-7, BHM-5, V-92, Uttaran and Duranta carried Wsm gene, but according to pathological test, functional resistance was observed for only BHM-7, V-92 and Uttaran on the basis of infection percentage and AUDPC score. BHM-7 (BARI Hybrid Maize 7) was noticed as the best one for showing resistance against MDMV and carrying Wsm gene. No genotype was found to govern resistance against MCDV.J. Bangladesh Agril. Univ. 16(2): 208-214, August 2018

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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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Quantitative trait loci for resistance to Maize rayado fino virus

Cited by 9 publications

References 27 publications

Insecticide seed treatment against corn leafhopper: helping protect grain yield in critical plant growth stages

Insecticide seed treatment against corn leafhopper: helping protect grain yield in critical plant growth stages

Molecular and pathological identification of maize genotypes having Wsm gene governing resistance against MDMV and MCDV

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

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