Inoculum potential of Fusarium verticillioides and performance of maize seeds

Machado, José da Cruz; Machado, Andréia Quixabeira; Pozza, Edson Ampélio; Machado, Cibele Ferreira; Zancan, Willian Luis Antonio

doi:10.1590/s1982-56762013000300005

Cited by 22 publications

(36 citation statements)

References 8 publications

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“…To be worthwhile, F. vericillioides, F. fujikuroi and F. proliferatum classified into the FFSC were specifically isolated from intercropping. Actually, they are among important pathogens causing maize ear rot and stalk rot in Sichuan Province and other countries [49][50][51][52]. In this study, the co-growth period for maize and soybean lasts more than two months in our maize/soybean relay strip intercropping pattern, and this might provide enough time for the dispersion of Fusarium spores causing maize stalk rot to soybean becoming the inoculums of seedling blight and pod decay of soybean [53].…”

Section: Pcr Amplification and Phylogenetic Analysismentioning

confidence: 82%

Maize/Soybean Relay Strip Intercropping Reduces the Occurrence of Fusarium Root Rot and Changes the Diversity of the Pathogenic Fusarium Species

Chang

Naeem

et al. 2020

Pathogens

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Fusarium species are the most detrimental pathogens of soybean root rot worldwide, causing large loss in soybean production. Maize/soybean relay strip intercropping has significant advantages on the increase of crop yields and efficient use of agricultural resources, but its effects on the occurrence and pathogen population of soybean root rot are rarely known. In this study, root rot was investigated in the fields of the continuous maize/soybean strip relay intercropping and soybean monoculture. Fusarium species were isolated from diseased soybean roots and identified based on sequence analysis of translation elongation factor 1α (EF-1α) and RNA polymerase II second largest subunit (RPB2), and the diversity and pathogenicity of these species were also analyzed. Our results showed that intercropping significantly decreased soybean root rot over monoculture. A more diverse Fusarium population including Fusarium solani species complex (FSSC), F. incarnatum-equiseti species complex (FIESC), F. oxysporum, F. fujikuroi, F. proliferatum and F. verticillioides, F. graminearum and F. asiaticum was identified from intercropping while FSSC, FIESC, F. oxysporum, F. commune, F. asiaticum and F. meridionale were found from monoculture. All Fusarium species caused soybean root infection but exhibited distinct aggressiveness. The most aggressive F. oxysporum was more frequently isolated in monoculture than intercropping. FSSC and FIESC were the dominant species complex and differed in their aggressiveness. Additionally, F. fujikuroi, F. proliferatum and F. verticillioides were specifically identified from intercropping with weak or middle aggressiveness. Except for F. graminearum, F. meridionale and F. asiaticum were firstly reported to cause soybean root rot in China. This study indicates maize/soybean relay strip intercropping can reduce soybean root rot, change the diversity and aggressiveness of Fusarium species, which provides an important reference for effective management of this disease.

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Section: Pcr Amplification and Phylogenetic Analysismentioning

confidence: 82%

Maize/Soybean Relay Strip Intercropping Reduces the Occurrence of Fusarium Root Rot and Changes the Diversity of the Pathogenic Fusarium Species

Chang

Naeem

et al. 2020

Pathogens

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Section: Introductionmentioning

confidence: 99%

“…Kernel infection by F. verticillioides can reduce seed germination of maize as well as vigor at different growth stages (Machado et al 2013). The effect of F. verticillioides on the development of maize seedlings/plants under controlled conditions was previously evaluated (Machado et al 2013). All traits measured (plant population stand, speed of seedling emergence, and height/weight of emerged plants) were negatively affected by the increasing fungal amounts present in the seeds (Machado et al 2013).…”

Section: Introductionmentioning

confidence: 99%

“…The effect of F. verticillioides on the development of maize seedlings/plants under controlled conditions was previously evaluated (Machado et al 2013). All traits measured (plant population stand, speed of seedling emergence, and height/weight of emerged plants) were negatively affected by the increasing fungal amounts present in the seeds (Machado et al 2013). Recently, a genome-wide association study (GWAS) using artificially inoculated maize kernels allowed the identification of several SNPs and candidate genes significantly associated with Fusarium resistance at the seedling stage (Stagnati et al 2019).…”

Section: Introductionmentioning

confidence: 99%

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A Genome-Wide Association Study To Understand the Effect of Fusarium verticillioides Infection on Seedlings of a Maize Diversity Panel

Stagnati

Rahjoo

Samayoa

et al. 2020

G3 Genes|Genomes|Genetics

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Fusarium verticillioides, which causes ear, kernel and stem rots, has been reported as the most prevalent species on maize worldwide. Kernel infection by F. verticillioides results in reduced seed yield and quality as well as fumonisin contamination, and may affect seedling traits like germination rate, entire plant seedling length and weight. Maize resistance to Fusarium is a quantitative and complex trait controlled by numerous genes with small effects. In the present work, a Genome Wide Association Study (GWAS) of traits related to Fusarium seedling rot was carried out in 230 lines of a maize association population using 226,446 SNP markers. Phenotypes were scored on artificially infected kernels applying the rolled towel assay screening method and three traits related to disease response were measured in inoculated and not-inoculated seedlings: plant seedling length (PL), plant seedling weight (PW) and germination rate (GERM). Overall, GWAS resulted in 42 SNPs significantly associated with the examined traits. Two and eleven SNPs were associated with PL in inoculated and not-inoculated samples, respectively. Additionally, six and one SNPs were associated with PW and GERM traits in not-inoculated kernels, and further nine and thirteen SNPs were associated to the same traits in inoculated kernels. Five genes containing the significant SNPs or physically closed to them were proposed for Fusarium resistance, and 18 out of 25 genes containing or adjacent to significant SNPs identified by GWAS in the current research co-localized within QTL regions previously reported for resistance to Fusarium seed rot, Fusarium ear rot and fumonisin accumulation. Furthermore, linkage disequilibrium analysis revealed an additional gene not directly observed by GWAS analysis. These findings could aid to better understand the complex interaction between maize and F. verticillioides.

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“…Some studies have associated the F. verticillioides presence with seed deterioration (WILLIAMS et al 2006 andWilke et al 2007), germination and seedling emergence reduction, especially in adverse conditions (CASA et al 2005;MACHADO et al 2013). On the other hand, Henning et al (2011), Solorzano andMalvik (2011) did not observe any negative effect of F. verticillioides incidence on germination and vigor of corn seeds.…”

Section: Introductionmentioning

confidence: 98%

Fusarium verticillioides inoculum potential and its relation with the physiological stored corn seeds quality

et al. 2016

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ABSTRACT:The pathogenic fungi may be associated with the seeds during development, harvest and storage, and it can be disseminated through them. This work evaluated the seeds performance of three hybrid corn cultivars, BM 840 PRO, BM 810 and BM 207, submitted to different inoculum potentials of Fusarium verticillioides. Seeds were uniformly distributed over the medium fungal colony developed on PDA (potato dextrose agar) containing mannitol in water potential -2.0 MPa. Seeds remained in this way for different periods of contamination (0, 24, 48, 72 and 96 hours). Before and after seven months of seed storage the evaluations were performed. Seeds treated with fungicide Derosal Plus® (carbendazim + thiram, 250 mL p.c. 100 kg -1 of seeds) were used as control. The increased of inoculum potential of F. verticillioides fungus on corn seeds caused reduction in physiological quality in the potentials 72 and 96 hours of exposure before and after storage. The highest Fusarium verticillioides incidence is observed in non-stored seeds. Fusarium verticillioides incidence on corn seeds accentuates the deterioration in storage.

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Inoculum potential of Fusarium verticillioides and performance of maize seeds

Abstract: 0.85) for all variables, except for plant height which presented correlation coefficient of 0.77. The most severe effect of the fungus in this study occurred on the root system of the emerged plants as determined by the highest inoculum intensity of the pathogen on the planted seeds.]]>

Cited by 22 publications

References 8 publications

Maize/Soybean Relay Strip Intercropping Reduces the Occurrence of Fusarium Root Rot and Changes the Diversity of the Pathogenic Fusarium Species

Maize/Soybean Relay Strip Intercropping Reduces the Occurrence of Fusarium Root Rot and Changes the Diversity of the Pathogenic Fusarium Species

A Genome-Wide Association Study To Understand the Effect of Fusarium verticillioides Infection on Seedlings of a Maize Diversity Panel

Fusarium verticillioides inoculum potential and its relation with the physiological stored corn seeds quality

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