Identification of novel QTLs for late leaf spot resistance and validation of a major rust QTL in peanut (Arachis hypogaea L.)

Ahmad, Suhail; Nawade, Bhagwat; Sangh, Chandramohan; Mishra, Gyan P.; Bosamia, Tejas C.; Radhakrishnan, T.; Kumar, Narendra; Dobaria, Jentilal R.; Gajera, H. P.

doi:10.1007/s13205-020-02446-4

Cited by 16 publications

(19 citation statements)

References 56 publications

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“…However, two major and common QTL regions were detected, located on chromosomes A03 for LLS and rust resistance, and A02 for LLS resistance only. These two candidate genomic regions conferring resistance to LLS and rust have been validated and used on marker-assisted selection for developing foliar disease-resistant lines ( Yeri and Bhat, 2016 ; Kolekar et al., 2017 ; Pandey et al., 2017b ; Ahmad et al., 2020 ). It is now well established that both resistance regions came from A. cardenasii accession GKP 10017 ( Bertioli et al., 2021a ).…”

Section: Discussionmentioning

confidence: 99%

“…& W.C.Greg. (A genome) with genes for resistance to root-knot nematode (RKN) ( Chu et al., 2007 ), leaf spots, rust, and web blotch ( Kolekar et al., 2016 ; Pandey et al., 2017b ; Ahmad et al., 2020 ; Lamon et al., 2020 ; Bertioli et al., 2021a ) were identified. By using marker-assisted selection, segments conferring RKN resistance were introgressed into released peanut cultivars ( Chu et al., 2011 ; Simpson et al., 2013 ; Clevenger et al., 2017b ).…”

Section: Introductionmentioning

confidence: 99%

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Marker-assisted introgression of wild chromosome segments conferring resistance to fungal foliar diseases into peanut (Arachis hypogaea L.)

et al. 2023

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IntroductionFungal foliar diseases can severely affect the productivity of the peanut crop worldwide. Late leaf spot is the most frequent disease and a major problem of the crop in Brazil and many other tropical countries. Only partial resistance to fungal diseases has been found in cultivated peanut, but high resistances have been described on the secondary gene pool.MethodsTo overcome the known compatibility barriers for the use of wild species in peanut breeding programs, we used an induced allotetraploid (Arachis stenosperma × A. magna)4x, as a donor parent, in a successive backcrossing scheme with the high-yielding Brazilian cultivar IAC OL 4. We used microsatellite markers associated with late leaf spot and rust resistance for foreground selection and high-throughput SNP genotyping for background selection.ResultsWith these tools, we developed agronomically adapted lines with high cultivated genome recovery, high-yield potential, and wild chromosome segments from both A. stenosperma and A. magna conferring high resistance to late leaf spot and rust. These segments include the four previously identified as having QTLs (quantitative trait loci) for resistance to both diseases, which could be confirmed here, and at least four additional QTLs identified by using mapping populations on four generations.DiscussionThe introgression germplasm developed here will extend the useful genetic diversity of the primary gene pool by providing novel wild resistance genes against these two destructive peanut diseases.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Marker-assisted introgression of wild chromosome segments conferring resistance to fungal foliar diseases into peanut (Arachis hypogaea L.)

et al. 2023

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“…The existence of variability in the disease progression depending on the isolates on the one hand and on the lines used resistance to disease on the other hand [24]; with a significant isolate * variety interaction would reveal the existence of a difference between the isolates which would be a function of the collection site. The Farakoba site in the Upper-Bassins region had been recognized as being very favorable to the development of leaf spot [30] in particular late leaf spot [22]. The disease is more destructive as [24] and most harmful groundnut diseases in the late growth stage [12] [19] [31]; causing considerable losses compared to early leaf spot in this site.…”

Section: Discussionmentioning

confidence: 99%

“…Various control methods have been developed to improve production [21]. Traditionally, LLS disease is controlled by fungicides, which are costly and toxic to the environment [2] [22]. Globally current methods to treat leaf spot include cultural control, chemical control, the use of antagonistic organisms, and host plant resistance.…”

Section: Introductionmentioning

confidence: 99%

Evaluation under Semi-Controlled Conditions of the Pathogenicity of Three Isolates of <i>Phaeoisariopsis personata</i> (Berk. & M.A Curt.)

Neya¹,

Sawadogo²,

Nana³

et al. 2023

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Peanut (Arachis hypogaea L.) late leaf spot is an important disease caused by Phaeoisariopsis personata (Berk. Et M. A Curt.). This fungus is responsible for the most damaging leaf spots in peanut production. The present experiment was undertaken to evaluate the pathogenic variability of Phaeoisariopsis personata in Burkina Faso. To this end, detached leaves and healthy plants of three peanut varieties were inoculated. Isolates I3TF, I2TG and I1TK of the pathogen (10 5 conidia/ml), collected respectively in the western, central and eastern agroecological zones of country, were used. The inoculated leaves were kept in Petri dishes on moist blotting paper and stored in the laboratory during the experimental period. The inoculated plants were grown under glass in pots containing a mixture of sterilized sand and clay. The development of disease was monitored and severity was scored every 15 days using rating scale. The results obtained in the laboratory and in the greenhouse revealed that there is pathogenic variability in the isolates tested. Indeed, for each variety, the highest severity score was recorded in plants inoculated with isolate I3TF and the lowest severity score with isolate I1TG. In the laboratory the severity scores ranged from 6.76 to 8.80 in TS32-1, 6.18 to 8.29 in SH70P and 5.98 to 7.92 in PC79-79. In the greenhouse, the average severity scores ranged from 5.61 to 8.33 in TS32-1, from 5.19 to 8.00 in SH70P, from 4.90 to 7.50 in PC79-79. Thus, the variety TS32-1 was the most susceptible to all three isolates of the pathogen.

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“…A 2.7-Mb genome location of the rust resistance genes in the same genomic region of chromosome A03 was confirmed with the help of ddRAD-Seq and whole-genome resequencing for the population derived from hybrid between TAG 24 and GPBD 4 ( Shirasawa et al., 2018 ). Recently, a major rust QTL containing resistance-related genes and R-genes functioning in inducing hypersensitive response (HR) during rust infection were validated by mapping with seven novel stress-related candidate EST-SSRs using 328 individuals from the F2 (GJG17×GPBD4) mapping population ( Ahmad et al., 2020 ) ( Table 6 ). In addition, nine rust resistant genotypes showed a 77% to 120% increase in pod yield under rust disease pressure over control, revealing significant environment (E) and genotype × environment (G×E) interactions ( Chaudhari et al., 2019 ).…”

Section: Omics Advances In Understanding Peanut Responses To Biotic S...mentioning

confidence: 99%

Advances in omics research on peanut response to biotic stresses

Huang

Gao

et al. 2023

Front. Plant Sci.

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Peanut growth, development, and eventual production are constrained by biotic and abiotic stresses resulting in serious economic losses. To understand the response and tolerance mechanism of peanut to biotic and abiotic stresses, high-throughput Omics approaches have been applied in peanut research. Integrated Omics approaches are essential for elucidating the temporal and spatial changes that occur in peanut facing different stresses. The integration of functional genomics with other Omics highlights the relationships between peanut genomes and phenotypes under specific stress conditions. In this review, we focus on research on peanut biotic stresses. Here we review the primary types of biotic stresses that threaten sustainable peanut production, the multi-Omics technologies for peanut research and breeding, and the recent advances in various peanut Omics under biotic stresses, including genomics, transcriptomics, proteomics, metabolomics, miRNAomics, epigenomics and phenomics, for identification of biotic stress-related genes, proteins, metabolites and their networks as well as the development of potential traits. We also discuss the challenges, opportunities, and future directions for peanut Omics under biotic stresses, aiming sustainable food production. The Omics knowledge is instrumental for improving peanut tolerance to cope with various biotic stresses and for meeting the food demands of the exponentially growing global population.

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Identification of novel QTLs for late leaf spot resistance and validation of a major rust QTL in peanut (Arachis hypogaea L.)

Cited by 16 publications

References 56 publications

Marker-assisted introgression of wild chromosome segments conferring resistance to fungal foliar diseases into peanut (Arachis hypogaea L.)

Marker-assisted introgression of wild chromosome segments conferring resistance to fungal foliar diseases into peanut (Arachis hypogaea L.)

Evaluation under Semi-Controlled Conditions of the Pathogenicity of Three Isolates of <i>Phaeoisariopsis personata</i> (Berk. & M.A Curt.)

Advances in omics research on peanut response to biotic stresses

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Identification of novel QTLs for late leaf spot resistance and validation of a major rust QTL in peanut (Arachis hypogaea L.)

Cited by 16 publications

References 56 publications

Marker-assisted introgression of wild chromosome segments conferring resistance to fungal foliar diseases into peanut (Arachis hypogaea L.)

Marker-assisted introgression of wild chromosome segments conferring resistance to fungal foliar diseases into peanut (Arachis hypogaea L.)

Evaluation under Semi-Controlled Conditions of the Pathogenicity of Three Isolates of &lt;i&gt;Phaeoisariopsis personata&lt;/i&gt; (Berk. &amp; M.A Curt.)

Advances in omics research on peanut response to biotic stresses

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Evaluation under Semi-Controlled Conditions of the Pathogenicity of Three Isolates of <i>Phaeoisariopsis personata</i> (Berk. & M.A Curt.)