Advanced Genetic Studies on Powdery Mildew Resistance in TGR-1551

López-Martín, María; Pérez‐de‐Castro, Ana; Picó, Belén

doi:10.3390/ijms232012553

Cited by 7 publications

(6 citation statements)

References 80 publications

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“…Through the whole genome-based approach, these NBS-LRR or LRR genes were found to be putative candidate genes for Pm1 gene in Cannabis sativa [96]. Similarly, in another study NBS-LRR was reported to be putative candidate gene in melon against powdery mildew [69]. Hence, all these findings suggest that the F-Box gene may be the putative candidate gene and the marker developed in this study will be used in the marker assisted breeding programs.…”

Section: Discussionsupporting

confidence: 60%

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Identification of Gene Responsible for Conferring Resistance against Race KN2 of Podosphaera xanthii in Melon

Kheng,

Choe,

Sahu

et al. 2024

IJMS

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Powdery mildew caused by Podosphaera xanthii is a serious fungal disease which causes severe damage to melon production. Unlike with chemical fungicides, managing this disease with resistance varieties is cost effective and ecofriendly. But, the occurrence of new races and a breakdown of the existing resistance genes poses a great threat. Therefore, this study aimed to identify the resistance locus responsible for conferring resistance against P. xanthii race KN2 in melon line IML107. A bi-parental F2 population was used in this study to uncover the resistance against race KN2. Genetic analysis revealed the resistance to be monogenic and controlled by a single dominant gene in IML107. Initial marker analysis revealed the position of the gene to be located on chromosome 2 where many of the resistance gene against P. xanthii have been previously reported. Availability of the whole genome of melon and its R gene analysis facilitated the identification of a F-box type Leucine Rich Repeats (LRR) to be accountable for the resistance against race KN2 in IML107. The molecular marker developed in this study can be used for marker assisted breeding programs.

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Section: Discussionsupporting

confidence: 60%

“…A similar inheritance study was reported in resistant line, Zimbabwean melon TGR-1551 resistance against 1, 2 and 5 of P. xanthii. Based on the genetic analysis, it is reported to carry two independent genes, one dominant and one recessive [69]. Similarly, the PMR 5 resistant line carries a single dominant gene against race 5 of Px [70].…”

Section: Discussionmentioning

confidence: 99%

Identification of Gene Responsible for Conferring Resistance against Race KN2 of Podosphaera xanthii in Melon

Kheng,

Choe,

Sahu

et al. 2024

IJMS

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“…It is necessary to breed varieties with multiple race-specific resistance genes and field resistance genes, and to date, several genes and QTL associated with resistance to PM have been mapped in different melon populations derived from several genetic sources (Table 1, Haonan et al 2020). The identified QTLs have been listed by López-Martín et al (2022).…”

Section: Resistance To Other Diseasesmentioning

confidence: 99%

“…Identifried PM resistnce loci -like, has been identified on chromosome 5 as a candidate resistance gene(López-Martín et al 2022). Another P. xanthii resistance gene for races 1 and 3 (Pm-w WMR 29 ) has been identified in a cluster of nucleotide-binding leucinerich repeat receptors (NLRs) on chromosome 5.…”

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confidence: 99%

Possibility of genome editing for melon breeding

Nonaka,

Ezura

2024

Breed. Sci.

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Genome editing technologies are promising for conventional mutagenesis breeding, which takes a long time to remove unnecessary mutations through backcrossing and create new lines because they directly modify the target genes of elite strains. In particular, this technology has advantages for traits caused by the loss of function. Many efforts have been made to utilize this technique to introduce valuable features into crops, including maize, soybeans, and tomatoes. Several genome-edited crops have already been commercialized in the US and Japan. Melons are an important vegetable crop worldwide, produced and used in various areas. Therefore, many breeding efforts have been made to improve its fruit quality, resistance to plant diseases, and stress tolerance. Quantitative trait loci (QTL) analysis was performed, and various genes related to important traits were identified. Recently, several studies have shown that the CRISPR/Cas9 system can be applied to melons, resulting in its possible utilization as a breeding technique. Focusing on two productivity-related traits, disease resistance, and fruit quality, this review introduces the progress in genetics, examples of melon breeding through genome editing, improvements required for breeding applications, and the possibilities of genome editing in melon breeding.

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“…Melon ( Cucumis melo L.) is an economically important crop [ 1 ] and China is the largest melon producer, accounting for 51% of the global production [ 2 ]. Melon has been cultivated in Xinjiang for more than 2000 years and the region is currently the largest melon producing region in China [ 3 ].…”

Section: Introductionmentioning

confidence: 99%

Nano-selenium enhances melon resistance to Podosphaera xanthii by enhancing the antioxidant capacity and promoting alterations in the polyamine, phenylpropanoid and hormone signaling pathways

Kang,

Wu,

Jia

et al. 2023

J Nanobiotechnol

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Powdery mildew is one of the main problematic diseases in melon production, requiring the use of chemical pesticides with disease-resistant cultivars for control. However, the often rapid acquisition of fungicidal resistance by mildew pathogens makes this practice unsustainable. The identification of crop treatments that can enhance resistance to powdery mildew resistance is therefore important to reduce melon crop attrition. This study indicates that the application of Nano-Se can reduce the powdery mildew disease index by 21–45%. The Nano-Se treatment reduced reactive oxygen species (ROS) and malondialdehyde (MDA) accumulation, with increases in glutathione (GSH), proline and 1,1-Diphenyl-2-picrylhydrazyl radical (DPPH). Increases were also observed in the activities and transcriptional levels of the antioxidant enzymes superoxide dismutase (SOD), catalase (CAT), ascorbate peroxidase (APX) and peroxidase (POD). Assays with four different cultivars of melon with differing levels of mildew resistance demonstrated that relative to the control, the Nano-Se treatment resulted in larger responses to mildew infection, including increases in the levels of putrescine (PUT; 43–112%) and spermine (SPM; 36–118%), indoleacetic acid (IAA; 43–172%) and salicylic acid (SA; 24–73%), the activities of phenylalanine ammonium lyase (PAL), trans-cinnamate 4-hydroxylase (C4H) and 4-coumarate: Co A ligase (4CL) of the phenylpropanoid pathway (22–38%, 24–126% and 19–64%, respectively). Key genes in the polyamine and phenylpropanoid pathway were also upregulated. These results indicate that the foliar application of Nano-Se improved melon defenses against powdery mildew infection, with a significant reduction in mildew disease development. Graphical Abstract

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Advanced Genetic Studies on Powdery Mildew Resistance in TGR-1551

Cited by 7 publications

References 80 publications

Identification of Gene Responsible for Conferring Resistance against Race KN2 of Podosphaera xanthii in Melon

Identification of Gene Responsible for Conferring Resistance against Race KN2 of Podosphaera xanthii in Melon

Possibility of genome editing for melon breeding

Nano-selenium enhances melon resistance to Podosphaera xanthii by enhancing the antioxidant capacity and promoting alterations in the polyamine, phenylpropanoid and hormone signaling pathways

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