High-density mapping for gray leaf spot resistance using two related tropical maize recombinant inbred line populations

Chen, Long; Liu, Li; Zhang, Yudong; Kang, Manjit S.; Wang, Yunyue; Fan, Xing

doi:10.1007/s11033-021-06350-9

Cited by 9 publications

(11 citation statements)

References 48 publications

(59 reference statements)

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“…Liu et al [ 9 ] identified seven QTLs associated with GLS resistance, with qRgls.yaas-8-1 , located within the bin 8.04 interval of chromosome 8, having the highest effect. Chen et al [ 20 ] genotyped two RIL populations, (CML373 × Ye107 and Chang7-2 × Ye107) and discovered 11 QTLs associated with GLS resistance, with individual QTLs explaining 2.05–24.00% of the phenotype variation. Qiu et al [ 21 ] used a near-isogenic line (NIL) population to localize QTL-qGLS8 for GLS resistance on chromosome 8.…”

Section: Discussionmentioning

confidence: 99%

Genetic dissection of resistance to gray leaf spot by genome-wide association study in a multi-parent maize population

Hu,

Kuang,

Shaw

et al. 2024

BMC Plant Biol

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Background Understanding the genetic mechanisms underlying gray leaf spot (GLS) resistance in maize is crucial for breeding GLS-resistant inbred lines and commercial hybrids. Genome-wide association studies (GWAS) and gene functional annotation are valuable methods for identifying potential SNPs (single nucleotide polymorphism) and candidate genes associated with GLS resistance in maize. Results In this study, a total of 757 lines from five recombinant inbred line (RIL) populations of maize at the F7 generation were used to construct an association mapping panel. SNPs obtained through genotyping-by-sequencing (GBS) were used to perform GWAS for GLS resistance using a linear mixture model in GEMMA. Candidate gene screening was performed by analyzing the 10 kb region upstream and downstream of the significantly associated SNPs linked to GLS resistance. Through GWAS analysis of multi-location phenotypic data, we identified ten candidate genes that were consistently detected in two locations or from one location along with best linear unbiased estimates (BLUE). One of these candidate genes, Zm00001d003257 that might impact GLS resistance by regulating gibberellin content, was further identified through haplotype-based association analysis, candidate gene expression analysis, and previous reports. Conclusions The discovery of the novel candidate gene provides valuable genomic resources for elucidating the genetic mechanisms underlying GLS resistance in maize. Additionally, these findings will contribute to the development of new genetic resources by utilizing molecular markers to facilitate the genetic improvement and breeding of maize for GLS resistance.

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Section: Discussionmentioning

confidence: 99%

Genetic dissection of resistance to gray leaf spot by genome-wide association study in a multi-parent maize population

Hu,

Kuang,

Shaw

et al. 2024

BMC Plant Biol

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“…The introduction of resistance alleles into the genetic resources of breeding programs is made possible by marker-assisted selection (MAS) [ 102 , 106 ]. Improving GLS resistance in maize breeding techniques requires the rapid discovery of GLS-resistant quantitative loci (QTL)/genes [ 102 , 107 ].…”

Section: The Main Foliar Diseases Affecting Cerealsmentioning

confidence: 99%

Beneficial Microorganisms as Bioprotectants against Foliar Diseases of Cereals: A Review

Dehbi,

Achemrk,

Ezzouggari

et al. 2023

Plants

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Cereal production plays a major role in both animal and human diets throughout the world. However, cereal crops are vulnerable to attacks by fungal pathogens on the foliage, disrupting their biological cycle and photosynthesis, which can reduce yields by 15–20% or even 60%. Consumers are concerned about the excessive use of synthetic pesticides given their harmful effects on human health and the environment. As a result, the search for alternative solutions to protect crops has attracted the interest of scientists around the world. Among these solutions, biological control using beneficial microorganisms has taken on considerable importance, and several biological control agents (BCAs) have been studied, including species belonging to the genera Bacillus, Pseudomonas, Streptomyces, Trichoderma, Cladosporium, and Epicoccum, most of which include plants of growth-promoting rhizobacteria (PGPRs). Bacillus has proved to be a broad-spectrum agent against these leaf cereal diseases. Interaction between plant and beneficial agents occurs as direct mycoparasitism or hyperparasitism by a mixed pathway via the secretion of lytic enzymes, growth enzymes, and antibiotics, or by an indirect interaction involving competition for nutrients or space and the induction of host resistance (systemic acquired resistance (SAR) or induced systemic resistance (ISR) pathway). We mainly demonstrate the role of BCAs in the defense against fungal diseases of cereal leaves. To enhance a solution-based crop protection approach, it is also important to understand the mechanism of action of BCAs/molecules/plants. Research in the field of preventing cereal diseases is still ongoing.

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“…Until the 1970s, it became prevalent in the eastern United States, resulting in serious economic losses (Donahue et al ., 1991; Coates & White, 1998). Up to now, GLS has spread throughout most of maize planting areas and has become one of the most important yield‐limiting maize diseases in the world (Ward et al ., 1999; Mueller et al ., 2016, 2020; Chen et al ., 2021). Although multiple Cercospora species have been isolated from maize leaves showing GLS lesions, only two of them ( C. zeae‐maydis and C. zeina ) are the causal agents of GLS (Wang et al ., 1998; Crous et al ., 2006).…”

Section: Introductionmentioning

confidence: 99%

ZmWAK02 encoding an RD‐WAK protein confers maize resistance against gray leaf spot

Dai,

Pi,

Liu

et al. 2023

New Phytologist

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Summary Gray leaf spot (GLS) caused by Cercospora zeina or C. zeae‐maydis is a major maize disease throughout the world. Although more than 100 QTLs resistant against GLS have been identified, very few of them have been cloned. Here, we identified a major resistance QTL against GLS, qRglsSB, explaining 58.42% phenotypic variation in SB12×SA101 BC1F1 population. By fine‐mapping, it was narrowed down into a 928 kb region. By using transgenic lines, mutants and complementation lines, it was confirmed that the ZmWAK02 gene, encoding an RD wall‐associated kinase, is the responsible gene in qRglsSB resistant against GLS. The introgression of the ZmWAK02 gene into hybrid lines significantly improves their grain yield in the presence of GLS pressure and does not reduce their grain yield in the absence of GLS. In summary, we cloned a gene, ZmWAK02, conferring large effect of GLS resistance and confirmed its great value in maize breeding.

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High-density mapping for gray leaf spot resistance using two related tropical maize recombinant inbred line populations

Cited by 9 publications

References 48 publications

Genetic dissection of resistance to gray leaf spot by genome-wide association study in a multi-parent maize population

Genetic dissection of resistance to gray leaf spot by genome-wide association study in a multi-parent maize population

Beneficial Microorganisms as Bioprotectants against Foliar Diseases of Cereals: A Review

ZmWAK02 encoding an RD‐WAK protein confers maize resistance against gray leaf spot

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