qNCLB7.02, a novel QTL for resistance to northern corn leaf blight in maize

Wang, Jianjun; Xu, Zhennan; Yang, Jinshui; Lu, Xiaohuan; Zhou, Zhiqiang; Zhang, Chaoshu; Zheng, Lei; Tian, Runan; Zhang, Hao; Yong, Hongjun; Li, Mingshun; Zhang, Degui; Li, Xinhai; Weng, Jianfeng

doi:10.1007/s11032-017-0770-1

Cited by 17 publications

(13 citation statements)

References 46 publications

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“…Our study revealed 17 QTL for NCLB f on all 10 chromosomes, while each of them explained between 3.57 and 30.98% of the genotypic variance. This complex genetic architecture was also observed in other NCLB QTL studies (Wang et al 2018;Chen et al 2016;Van Inghelandt et al 2012;Poland et al 2011;Wisser et al 2006). To the best of our knowledge, the QTLs identified in our study and located on chromosome bins 1.07, 1.08, 2.02, 2.04, 4.03, 5.04, 8.08 and 9.04 were not yet published in the literature.…”

Section: Brazilian Genetic Materials Is a Great Source Of Qtls For Quasupporting

confidence: 84%

Intercontinental trials reveal stable QTL for Northern corn leaf blight resistance in Europe and in Brazil

et al. 2020

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Key message NCLB is the most devastating leaf disease in European maize, and the introduction of Brazilian resistance donors can efficiently increase the resistance levels of European maize germplasm. Abstract Northern corn leaf blight (NCLB) is one of the most devastating leaf pathogens in maize (Zea mays L.). Maize cultivars need to be equipped with broad and stable NCLB resistance to cope with production intensification and climate change. Brazilian germplasm is a great source to increase low NCLB resistance levels in European materials, but little is known about their effect in European environments. To investigate the usefulness of Brazilian germplasm as NCLB resistance donors, we conducted multi-parent QTL mapping, evaluated the potential of marker-assisted selection as well as genome-wide selection of 742 F1-derived DH lines. The line per se performance was evaluated in one location in Brazil and six location-by-year combinations (= environments) in Europe, while testcrosses were assessed in two locations in Brazil and further 10 environments in Europe. Jointly, we identified 17 QTL for NCLB resistance explaining 3.57–30.98% of the genotypic variance each. Two of these QTL were detected in both Brazilian and European environments indicating the stability of these QTL in contrasting ecosystems. We observed moderate to high genomic prediction accuracies between 0.58 and 0.83 depending on population and continent. Collectively, our study illustrates the potential use of tropical resistance sources to increase NCLB resistance level in applied European maize breeding programs.

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Section: Brazilian Genetic Materials Is a Great Source Of Qtls For Quasupporting

confidence: 84%

Intercontinental trials reveal stable QTL for Northern corn leaf blight resistance in Europe and in Brazil

et al. 2020

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“…In addition, Trichoderma was negatively correlated with a range of pathogens such as Gibberella , Bulmeria , Cladosporium and Setosphaeria (Fig. 5 ), which may cause plant diseases such as Fusarium head blight, wheat powdery mildew, tomato leaf mildew and maize leaf spot 70 – 72 . This indicates that Trichoderma has more potential and development space in the application of biocontrol.…”

Section: Discussionmentioning

confidence: 99%

Trichoderma atroviride seed dressing influenced the fungal community and pathogenic fungi in the wheat rhizosphere

Sui

Philp

et al. 2022

Sci Rep

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Fusarium crown rot and wheat sharp eyespot are major soil-borne diseases of wheat, causing serious losses to wheat yield in China. We applied high-throughput sequencing combined with qPCR to determine the effect of winter wheat seed dressing, with either Trichoderma atroviride HB20111 spore suspension or a chemical fungicide consisting of 6% tebuconazole, on the fungal community composition and absolute content of pathogens Fusarium pseudograminearum and Rhizoctonia cerealis in the rhizosphere at 180 days after planting. The results showed that the Trichoderma and chemical fungicide significantly reduced the amount of F. pseudograminearum in the rhizosphere soil (p < 0.05), and also changed the composition and structure of the fungal community. In addition, field disease investigation and yield measurement showed that T. atroviride HB20111 treatment reduced the whiteheads with an average control effect of 60.1%, 14.9% higher than the chemical treatment; T. atroviride HB20111 increased yield by 7.7%, which was slightly more than the chemical treatment. Therefore, T. atroviride HB20111 was found to have the potential to replace chemical fungicides to control an extended range of soil-borne diseases of wheat and to improve wheat yield.

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“…This demonstrated their true expression in different environments ( Li et al, 2014 ). The CSSLs derived from Qi319 as donor and Ye478 were used to validate qNCLB7.02 , which was the novel QTL related to resistance to the northern corn leaf (NCLB) ( Wang et al, 2018b ). However, there have yet been few reports on applying CSSL materials when mapping the QTLs related to maize tolerance of low temperatures.…”

Section: Discussionmentioning

confidence: 99%

“…The population with 180 CSSLs were constructed with Ye478 as the female parent and Qi319 as the male parent. These CSSLs were selected by backcrossing and marker-assisted selection technology by SSR and InDel marker encryption ( Wang et al, 2018b ). In this study, seven CSSLs with segments substitution of Qi319 in the major QTL of low-temperature tolerance were selected and used.…”

Section: Methodsmentioning

confidence: 99%

Using a high density bin map to analyze quantitative trait locis of germination ability of maize at low temperatures

Zhou

Lu²,

Ma³

et al. 2022

Front. Plant Sci.

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Low temperatures in the spring often lead to a decline in the emergence rate and uniformity of maize, which can affect yield in northern regions. This study used 365 recombinant inbred lines (RILs), which arose from crossing Qi319 and Ye478, to identify low-temperature resistance during the germination stage by measuring eight low-temperature-related traits. The quantitative trait locis (QTLs) were mapped using R/qtl software by combining phenotypic data, and the genotyping by sequencing (GBS) method to produce a high-density genetic linkage map. Twenty QTLs were detected during QTL mapping, of which seven QTLs simultaneously detected a consistent 197.10–202.30 Mb segment on chromosome 1. The primary segment was named cQTL1-2, with a phenotypic variation of 5.18–25.96% and a physical distance of 5.2 Mb. This combines the phenotype and genotype with the identification of seven chromosome segment substitution lines (CSSLs), which were derived from Ye478*Qi319 and related to cQTL1-2. The physical distance of cQTL1-2 was reduced to approximately 1.9 Mb. The consistent meta-QTL mQTL1 was located at 619.06 cM on chromosome 1, had a genetic distance of 7.27 cM, and overlapped with cQTL1-2. This was identified by combining the results of previous QTL studies assessing maize tolerance to low temperatures at the germination stage. An assessment of the results of the RIL population, CSSLs, and mQTL1 found the consistent QTL to be LtQTL1-1. It was identified in bin1.06-1.07 at a confidence interval of between 200,400,148 and 201,775,619 bp. In this interval, qRT-PCR found that relative expression of the candidate genes GRMZM2G082630 and GRMZM2G115730 were both up-regulated in low-temperature tolerant lines and down-regulated in sensitive lines (P < 0.01).

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qNCLB7.02, a novel QTL for resistance to northern corn leaf blight in maize

Cited by 17 publications

References 46 publications

Intercontinental trials reveal stable QTL for Northern corn leaf blight resistance in Europe and in Brazil

Intercontinental trials reveal stable QTL for Northern corn leaf blight resistance in Europe and in Brazil

Trichoderma atroviride seed dressing influenced the fungal community and pathogenic fungi in the wheat rhizosphere

Using a high density bin map to analyze quantitative trait locis of germination ability of maize at low temperatures

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