Effects of artificial inoculation on trait correlations with resistance to Fusarium ear rot and fumonisin contamination in maize

Crop Science ◽  
2021 ◽  
Author(s):  
Eric N. Butoto ◽  
Thiago P. Marino ◽  
James B. Holland
Keyword(s):  
Artificial Inoculation ◽  
Fusarium Ear Rot ◽  
Ear Rot ◽  
Trait Correlations

scholarly journals Evaluation of Maize Inbred Lines for Resistance to Fusarium Ear Rot and Fumonisin Accumulation in Grain in Tropical Africa

Plant Disease ◽  
2007 ◽  
Vol 91 (3) ◽  
pp. 279-286 ◽  
Author(s):  
C. G. Afolabi ◽  
P. S. Ojiambo ◽  
E. J. A. Ekpo ◽  
A. Menkir ◽  
R. Bandyopadhyay
Keyword(s):  
Disease Severity ◽  
Natural Infection ◽  
Fusarium Verticillioides ◽  
Field Trials ◽  
Inbred Lines ◽  
Artificial Inoculation ◽  
Fusarium Ear Rot ◽  
Ear Rot ◽  
Maize Inbred Lines ◽  
Resistant Lines

Fusarium ear rot and fumonisin contamination is a major problem facing maize growers worldwide, and host resistance is the most effective strategy to control the disease, but resistant genotypes have not been identified. In 2003, a total of 103 maize inbred lines were evaluated for Fusarium ear rot caused by Fusarium verticillioides in field trials in Ikenne and Ibadan, Nigeria. Disease was initiated from natural infection in the Ikenne trial and from artificial inoculation in the Ibadan trial. Ear rot severity ranged from 1.0 to 6.0 in both locations in 2003. Fifty-two inbred lines with disease severity ≤3 (i.e., ≤ 10% visible symptoms on ears) were selected and reevaluated in 2004 for ear rot resistance, incidence of discolored kernels, and fumonisin contamination in grain. At both locations, ear rot severity on the selected lines was significantly (P < 0.0020) higher in 2004 than in 2003. The effects of selected inbred lines on disease severity were highly significant at Ikenne (P = 0.0072) and Ibadan (P < 0.0001) in 2004. Inbred lines did not affect incidence of discolored kernels at both locations and across years except at Ikenne (P = 0.0002) in 2004. Similarly, significant effects of inbred lines on fumonisin concentration were observed only at Ikenne (P = 0.0201) in 2004. However, inbred lines 02C14585, 02C14593, 02C14603, 02C14606, 02C14624, and 02C14683 had consistently low disease severity across years and locations. Fumonisin concentration was significantly correlated with ear rot only at Ikenne (R = 0.42, P < 0.0001). Correlation between fumonisin concentration and incidence of discolored kernels was also significant at Ikenne (R = 0.39, P < 0.0001) and Ibadan (R = 0.35, P = 0.0007). At both locations, no significant inbred × year interaction was observed for fumonisin concentration. Five inbred lines, namely 02C14585, 02C14603, 02C14606, 02C14624, and 02C14683, consistently had the lowest fumonisin concentration in both trials. Two of these inbred lines, 02C14624 and 02C14585, had fumonisin levels <5.0 μg/g across years in trials where disease was initiated from both natural infection and artificial inoculation. These lines that had consistently low disease severity are useful for breeding programs to develop fumonisin resistant lines.

scholarly journals The Reaction of some Maize Hybrids, Created at ARDS TURDA, to Fusarium spp. Infection

2017 ◽  
Vol 74 (1) ◽  
pp. 47
Author(s):  
Laura ȘOPTEREAN ◽  
Loredana SUCIU ◽  
Ana Maria VĂLEAN ◽  
Felicia MUREŞANU ◽  
Carmen PUIA
Keyword(s):  
Production Capacity ◽  
Climatic Conditions ◽  
Fusarium Ear Rot ◽  
Ear Rot ◽  
Artificial Infection ◽  
Fusarium Spp ◽  
Corn Hybrids ◽  
Maize Hybrids ◽  
Resistance Reaction

The most important disease of maize in Romania are stalk and ear rot, which caused yield losses in average of 20%. The resistant hibrids represent one of the most efficient solution for reducing the field loses caused by Fusarium spp. on the maize (Nagy et al., 2006). Diseases caused by Fusarium spp. can affect the yield and grain quality of maize because of contamination with numerous mycotoxins produced by these fungi (Czembor et al., 2015). The purpose of this paper was to know more about the reaction of different maize hybrids to Fusarium and the evaluating the effect of ear rot on the yield ability and mycotoxins accumulation. The experiments carried out at ARDS Turda, during four years (2012-2015). The biological material was represented by 8 hybrids, from different maturity groups, tested in two infection conditions with Fusarium spp. (natural and artificial infections). The temperature and rainfalls of the four years of experiments corresponding to the vegetation of maize (april-september) are influenced favourably the pathogenesis of stalk and ear rot caused by Fusarium spp. and a good discrimination of the resistance reaction of genotypes. Fusarium ear rot has significantly affected production capacity and chemical composition of corn hybrids tested. In conditions of artificial infection with Fusarium spp. was a decrease in the content of starch, fat and increased protein content compared with artificially inoculated variants. The quantity of fumonizin B1+B2 has reached to 5630 μg/kg in conditions of artificial infection. There are negative correlations between production capacity and degree of attack of fusarium ear rot; depending on the reacting genotypes tested increasing disease causes production decrease. The response of maize hybrids to Fusarium infection is influenced by infection and climatic conditions. These factors affect production both in terms of quantity and quality and accumulation of mycotoxins.

Relationships of Resistance to Fusarium Ear Rot and Fumonisin Contamination with Agronomic Performance of Maize

Crop Science ◽  
2007 ◽  
Vol 47 (5) ◽  
pp. 1770-1778 ◽  
Author(s):  
Leilani A. Robertson-Hoyt ◽  
Craig E. Kleinschmidt ◽  
Don G. White ◽  
Gary A. Payne ◽  
Chris M. Maragos ◽  
...  
Keyword(s):  
Agronomic Performance ◽  
Fusarium Ear Rot ◽  
Ear Rot

Susceptibility of Inbred Lines of Corn to Fusarium Ear Rot 1

1949 ◽  
Vol 41 (8) ◽  
pp. 347-348 ◽  
Author(s):  
Francis L. Smith ◽  
Catharine Becker Madsen
Keyword(s):  
Inbred Lines ◽  
Fusarium Ear Rot ◽  
Ear Rot

scholarly journals Characterization and pathogenicity of Fusarium proliferatum andFusarium verticillioides, causal agents of Fusarium ear rot of corn

2017 ◽  
Vol 41 ◽  
pp. 220-230 ◽  
Author(s):  
Nur Ain Izzati MOHD ZAINUDIN ◽  
Farah Aqila HAMZAH ◽  
Nor Azizah KUSAI ◽  
Nur Syuhada ZAMBRI ◽  
Suhaida SALLEH
Keyword(s):  
Fusarium Proliferatum ◽  
Fusarium Ear Rot ◽  
Ear Rot

scholarly journals Genome-Wide Association Study and QTL Mapping Reveal Genomic Loci Associated with Fusarium Ear Rot Resistance in Tropical Maize Germplasm

2016 ◽  
Vol 6 (12) ◽  
pp. 3803-3815 ◽  
Author(s):  
Jiafa Chen ◽  
Rosemary Shrestha ◽  
Junqiang Ding ◽  
Hongjian Zheng ◽  
Chunhua Mu ◽  
...  
Keyword(s):  
Disease Resistance ◽  
Association Study ◽  
Candidate Genes ◽  
Genome Wide Association Study ◽  
Physical Map ◽  
Genome Wide Association ◽  
Fusarium Ear Rot ◽  
Ear Rot ◽  
Tropical Maize ◽  
Genome Wide

Abstract Fusarium ear rot (FER) incited by Fusarium verticillioides is a major disease of maize that reduces grain quality globally. Host resistance is the most suitable strategy for managing the disease. We report the results of genome-wide association study (GWAS) to detect alleles associated with increased resistance to FER in a set of 818 tropical maize inbred lines evaluated in three environments. Association tests performed using 43,424 single-nucleotide polymorphic (SNPs) markers identified 45 SNPs and 15 haplotypes that were significantly associated with FER resistance. Each associated SNP locus had relatively small additive effects on disease resistance and accounted for 1–4% of trait variation. These SNPs and haplotypes were located within or adjacent to 38 candidate genes, 21 of which were candidate genes associated with plant tolerance to stresses, including disease resistance. Linkage mapping in four biparental populations to validate GWAS results identified 15 quantitative trait loci (QTL) associated with F. verticillioides resistance. Integration of GWAS and QTL to the maize physical map showed eight colocated loci on chromosomes 2, 3, 4, 5, 9, and 10. QTL on chromosomes 2 and 9 are new. These results reveal that FER resistance is a complex trait that is conditioned by multiple genes with minor effects. The value of selection on identified markers for improving FER resistance is limited; rather, selection to combine small effect resistance alleles combined with genomic selection for polygenic background for both the target and general adaptation traits might be fruitful for increasing FER resistance in maize.

Effects of agrochemical treatments on the occurrence of Fusarium ear rot and fumonisin contamination of maize in Southern Italy

2011 ◽  
Vol 123 (2) ◽  
pp. 161-169 ◽  
Author(s):  
Filippo De Curtis ◽  
Vincenzo De Cicco ◽  
Miriam Haidukowski ◽  
Michelangelo Pascale ◽  
Stefania Somma ◽  
...  
Keyword(s):  
Southern Italy ◽  
Fusarium Ear Rot ◽  
Ear Rot

QTL Mapping for Fusarium Ear Rot and Fumonisin Contamination Resistance in Two Maize Populations

Crop Science ◽  
2006 ◽  
Vol 46 (4) ◽  
pp. 1734-1743 ◽  
Author(s):  
Leilani A. Robertson‐Hoyt ◽  
Michael P. Jines ◽  
Peter J. Balint‐Kurti ◽  
Craig E. Kleinschmidt ◽  
Don G. White ◽  
...  
Keyword(s):  
Qtl Mapping ◽  
Fusarium Ear Rot ◽  
Ear Rot ◽  
Maize Populations

Severity of Fusarium ear rot and concentration of fumonisin in grain of Argentinian maize hybrids

2007 ◽  
Vol 26 (6) ◽  
pp. 852-855 ◽  
Author(s):  
Daniel A. Presello ◽  
Juliana Iglesias ◽  
Grisela Botta ◽  
Guillermo H. Eyhérabide
Keyword(s):  
Fusarium Ear Rot ◽  
Ear Rot ◽  
Maize Hybrids
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