Phenotyping for angular leaf spot severity and its implication in breeding common bean for resistance

Pereira, Rucyan Walace; Abreu, Ângela de Fátima Barbosa; Nalin, Rafael Storto; Souza, Elaine Aparecida de

doi:10.1590/1678-992x-2017-0394

Cited by 16 publications

(18 citation statements)

References 28 publications

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“…The results of linkage mapping using AND 277 as an Andean source of resistance for the AM population showed the complexity of the resistance mechanism during an incompatible interaction between bean and P. griseola. Furthermore, ALS resistance is modulated by different QTL throughout the plant growth stage, corroborating the results shown phenotypically by Pereira R. et al (2019). The same result was observed for GWAS analysis, with significance of several QTNs for the three PGSs evaluated in the CDP of Mesoamerican origin, some QTNs being significant for more than one stage.…”

Section: Genome-wide Associationsupporting

confidence: 83%

“…In addition, Pereira et al (2015) showed the existence of great variability in virulence for isolates classified as the same race and studies have shown that genetic control of ALS resistance differs depending on the plant tissue affected (Borel et al, 2011;Rezende et al, 2014). Other studies also reported the genotype × environment interaction for evaluations under conditions of natural occurrence of the pathogen, showing a large environmental effect on control of resistance, corroborating the quantitative profile of the disease (Amaro et al, 2007;Oblessuc et al, 2012;Pereira R. et al, 2019). Pereira R. et al (2019) evaluated 144 bean accessions for ALS resistance in three different PGSs, and showed that the percentage of genotypes considered resistant to ALS ranging from 7% to 31%, and that the variation in the percentage of coincidence as low for qualitative inheritance.…”

Section: Qtl Associated With Als Resistancementioning

confidence: 59%

“…With rejection of the most susceptible genotypes in the V2 stage, more careful evaluation can be carried out in the V3 evaluation and, if possible, in field evaluation. Differential expression of genes in different environments may be explained by the occurrence of epigenetic events (Pereira R. et al, 2019). However, Pereira R. et al (2019) reported that 30.5% of the cultivars showed resistance to ALS in the V2 stage, whereas only 6.9% were resistant in the V3 stage.…”

Section: Degrees Of Resistance Throughout the Plant Growthmentioning

confidence: 99%

“…While only 5 loci have been reported by the BIC Genetics Committee, several authors have detected quantitative control for the disease, and numerous QTL have already been identified, showing the complex inheritance of ALS resistance (López et al, 2003;Caixeta et al, 2005;Oblessuc et al, 2012;Keller et al, 2015;Perseguini et al, 2016;Bassi et al, 2017;Pereira L. A. et al, 2019Librelon et al, 2020). In a recent study, bean accessions evaluated in three PGS and environments regarding degree of resistance to ALS exhibited different resistance levels, as the same cultivar considered resistant in one PGS showed susceptibility in another (Pereira R. et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

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Angular Leaf Spot Resistance Loci Associated With Different Plant Growth Stages in Common Bean

et al. 2021

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Angular leaf spot (ALS) is a disease that causes major yield losses in the common bean crop. Studies based on different isolates and populations have already been carried out to elucidate the genetic mechanisms of resistance to ALS. However, understanding of the interaction of this resistance with the reproductive stages of common bean is lacking. The aim of the present study was to identify ALS resistance loci at different plant growth stages (PGS) by association and linkage mapping approaches. An BC2F3 inter-gene pool cross population (AND 277 × IAC-Milênio – AM population) profiled with 1,091 SNPs from genotyping by sequencing (GBS) was used for linkage mapping, and a carioca diversity panel (CDP) genotyped by 5,398 SNPs from BeadChip assay technology was used for association mapping. Both populations were evaluated for ALS resistance at the V2 and V3 PGSs (controlled conditions) and R8 PGS (field conditions). Different QTL (quantitative trait loci) were detected for the three PGSs and both populations, showing a different quantitative profile of the disease at different plant growth stages. For the three PGS, multiple interval mapping (MIM) identified seven significant QTL, and the Genome-wide association study (GWAS) identified fourteen associate SNPs. Several loci validated regions of previous studies, and Phg-1, Phg-2, Phg-4, and Phg-5, among the 5 loci of greatest effects reported in the literature, were detected in the CDP. The AND 277 cultivar contained both the Phg-1 and the Phg-5 QTL, which is reported for the first time in the descendant cultivar CAL143 as ALS10.1UC. The novel QTL named ALS11.1AM was located at the beginning of chromosome Pv11. Gene annotation revealed several putative resistance genes involved in the ALS response at the three PGSs, and with the markers and loci identified, new specific molecular markers can be developed, representing a powerful tool for common bean crop improvement and for gain in ALS resistance.

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Section: Genome-wide Associationsupporting

confidence: 83%

Section: Qtl Associated With Als Resistancementioning

confidence: 59%

Section: Degrees Of Resistance Throughout the Plant Growthmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Angular Leaf Spot Resistance Loci Associated With Different Plant Growth Stages in Common Bean

et al. 2021

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“…Fritsche-Neto et al (2019) reported an estimated heritability of 0.64 for anthracnose under field conditions and SNPs associated to ANT on Pv02 and heritability of 0.93 and SNPs associated for ALS on Pv10. Pereira et al (2019) demonstrated an observed heritability of 0.79 under conditions of natural incidence of angular leaf spot.…”

Section: Discussionmentioning

confidence: 99%

Combining disease resistance and postharvest quality traits by early marker-assisted backcrossing in carioca beans

Paulino

Almeida

Santos

et al. 2022

Sci. agric. (Piracicaba, Braz.)

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Common bean is a worldwide important crop. The development of varieties with durable resistance to diseases is a major challenge in common bean breeding. The present study aimed at evaluating the phenotypic and molecular selection of anthracnose resistance in a population obtained by assisted backcrossing from IAC Formoso (resistant, donor parent) × BRS Pérola (susceptible, recurrent parent). Nine microsatellites (SSRs) and one Sequence Tagged Sites (STS) markers previously linked to ANT resistance were used to genotype this progeny, and the results showed that the selection of the genotypes closest to the donor parent in the BC 1 F 1 population decreased the number of backcrossing cycles necessary to obtain advanced isogenic lines, potentiating the use of this tool for early selection of resistant cultivars. A total of 31 % of the BC 1 F 1 progeny was selected and backcrossed again. The progeny derived from the second backcross (BC 2 F 3 ) was selected for the Carioca grain ideotype, and 42 % of the genotypes showed high resistance to anthracnose under controlled conditions of infection for races 65 and 81. Superior resistant plants were selected and evaluated under natural conditions of infection to fusarium wilt and angular leaf spot, allowing the selection of two inbred lines with higher resistance to anthracnose, fusarium wilt, angular leaf spot and postharvest quality traits such as yield, 100 seed weight, L value at seed harvest grain darkening and cooking time.The approach outlined in this paper proved to be effective to simultaneously select for disease resistance without losing technological quality aspects of the bean.

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Increasing the efficiency of recurrent selection for angular leaf spot resistance in common bean

et al. 2020

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A common bean (Phaseolus vulgaris L.) breeding program for resistance to Pseudocercospora griseola (Sacc.) Crous & U. Braun (angular leaf spot) using recurrent selection has been conducted since 1998 in Brazil. The selection has been carried out in the field with high natural occurrence of the pathogen. One recurrent selection cycle has been conducted per year. The efficiency of artificial inoculation of P. griseola and early assessment of angular leaf spot severity in common bean progenies of this program were evaluated. For this, 254 and 166 S 0:1 progenies from Cycles XVI and XVIII, respectively, were assessed for angular leaf spot severity in field, with natural occurrence of the pathogen and in greenhouse with artificial inoculation of P. griseola. Most progenies showed a high level of resistance to angular leaf spot, indicating the efficiency of recurrent selection. Artificial inoculation of P. griseola in the greenhouse showed promise for the selection of resistant plants in a recurrent selection program allowing breeders to carry out two cycles per year. A scheme was proposed that combined the advantages of early-generation selection with artificial inoculation of the pathogen in greenhouse with the advantages of selection in field with natural occurrence of P. griseola in the dry season, increasing genetic gain per unit time.

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Phenotyping for angular leaf spot severity and its implication in breeding common bean for resistance

Cited by 16 publications

References 28 publications

Angular Leaf Spot Resistance Loci Associated With Different Plant Growth Stages in Common Bean

Angular Leaf Spot Resistance Loci Associated With Different Plant Growth Stages in Common Bean

Combining disease resistance and postharvest quality traits by early marker-assisted backcrossing in carioca beans

Increasing the efficiency of recurrent selection for angular leaf spot resistance in common bean

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