Phytotoxic effect of deoxynivalenol and gibberella ear rot resistance of com

CO476 is an early-medium maturity (76 days to flowering) mostly stiff stalk (BSSS) yellow flint inbred which combines well with a stiff stalk B14 type and iodent type testers in many different locations. CO476 possesses moderate resistance to gibberella ear rot both in the inbred and in hybrid combinations. It has intermediate response to common smut, fusarium stalk rot, northern corn leaf blight, common rust and Goss’s wilt.

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CO475 corn inbred line

Canadian Journal of Plant Science ◽

10.1139/cjps-2020-0057 ◽

2020 ◽

Author(s):

Aida Kebede ◽

Lana M Reid ◽

Constantin Voloaca ◽

Ron De Schiffart ◽

Jinhe Wu ◽

...

Keyword(s):

Inbred Line ◽

Leaf Blight ◽

Ear Rot ◽

Northern Leaf Blight ◽

Gibberella Ear Rot ◽

Days To Flowering ◽

Stalk Rot ◽

Intermediate Response ◽

Corn Inbred ◽

Moderate Resistance

CO475 is an early-medium maturity (75 days to flowering) mostly Iodent yellow semi-dent inbred which combines well with several testers in many different locations. It has moderate resistance to gibberella ear rot (both the inbred and in hybrid combinations) and intermediate response to smut, fusarium stalk rot, northern leaf blight, eyespot, rust, and goss’s wilt.

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Natural Occurrence of Maize Gibberella Ear Rot and Contamination of Grain with Mycotoxins in Association with Weather Variables

Plant Disease ◽

10.1094/pdis-05-20-0952-re ◽

2021 ◽

Vol 105 (1) ◽

pp. 114-126 ◽

Cited By ~ 1

Author(s):

F. Dalla Lana ◽

L. V. Madden ◽

P. A. Paul

Keyword(s):

Correlation Coefficients ◽

Natural Occurrence ◽

Spearman Correlation ◽

Ear Rot ◽

Weather Variables ◽

Gibberella Ear Rot ◽

Maize Hybrids ◽

Surface Wetness ◽

Percent Area ◽

Grain Contamination

Gibberella ear rot (GER) severity (percent area of the ear diseased) and associated grain contamination with mycotoxins were quantified in plots of 15 to 16 maize hybrids planted at 10 Ohio locations from 2015 to 2018. Deoxynivalenol (DON) was quantified in grain samples in all 4 years, whereas nivalenol, 3-acetyldeoxynivalenol, and 15-acetyldeoxynivalenol (15ADON) were quantified only in the last 2 years. Only DON and 15ADON were detected. The highest levels of GER and DON contamination were observed for 2018, followed by 2016 and 2017. No GER symptoms or DON were detected in 2015. Approximately 41% of the samples from asymptomatic ears had detectable levels of DON, and 7% of these samples from 2016 had DON > 5 ppm. Associations between DON contamination and 43 variables representing summaries of temperature (T), relative humidity (RH), rainfall (R), surface wetness, and T-RH combinations for different window lengths and positions relative to R1 growth stage were quantified with Spearman correlation coefficients (r). Fifteen-day window lengths tended to show the highest correlations. Most of the variables based on T, R, RH, and T-RH were significantly correlated with DON for the 15-day window, as well as other windows. For moisture-related variables, there generally was a negative correlation before R1, changing to a positive correlation after R1. Results showed that GER and DON can be frequently found in Ohio maize fields, with the risk of DON being associated with multiple weather variables, particularly those representing combinations of T between 15 and 30°C and RH > 80 summarized during the 3 weeks after R1.

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Quantitative trait loci mapping for Gibberella ear rot resistance and associated agronomic traits using genotyping-by-sequencing in maize

Theoretical and Applied Genetics ◽

10.1007/s00122-015-2600-3 ◽

2015 ◽

Vol 129 (1) ◽

pp. 17-29 ◽

Cited By ~ 22

Author(s):

Aida Z. Kebede ◽

Tsegaye Woldemariam ◽

Lana M. Reid ◽

Linda J. Harris

Keyword(s):

Quantitative Trait Loci ◽

Quantitative Trait ◽

Agronomic Traits ◽

Genotyping By Sequencing ◽

Quantitative Trait Loci Mapping ◽

Ear Rot ◽

Gibberella Ear Rot ◽

Trait Loci

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Maize resistance to gibberella ear rot: symptoms, deoxynivalenol, and yield1

Canadian Journal of Plant Pathology ◽

10.1080/07060660109506915 ◽

2001 ◽

Vol 23 (1) ◽

pp. 99-105 ◽

Cited By ~ 42

Author(s):

B. Vigier ◽

L.M. Reid ◽

L.M. Dwyer ◽

D.W. Stewart ◽

R.C. Sinha ◽

...

Keyword(s):

Ear Rot ◽

Gibberella Ear Rot ◽

Maize Resistance

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Changes in the Distribution of Trichothecenes and Zearalenone in Maize with Gibberella Ear Rot During Storage at Cool Temperatures

Plant Disease ◽

10.1094/pd-74-0304 ◽

1990 ◽

Vol 74 (4) ◽

pp. 304

Author(s):

D. T. Wicklow

Keyword(s):

Ear Rot ◽

Gibberella Ear Rot

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Exploiting genetic diversity in two European maize landraces for improving Gibberella ear rot resistance using genomic tools

Theoretical and Applied Genetics ◽

10.1007/s00122-020-03731-9 ◽

2020 ◽

Cited By ~ 1

Author(s):

David Sewordor Gaikpa ◽

Bettina Kessel ◽

Thomas Presterl ◽

Milena Ouzunova ◽

Ana L. Galiano-Carneiro ◽

...

Keyword(s):

Agronomic Traits ◽

Yield Reduction ◽

Environment Interaction ◽

Genome Wide Association Studies ◽

Ear Rot ◽

Significant Qtls ◽

Gibberella Ear Rot ◽

Genomic Tools ◽

Maize Landraces ◽

European Maize

Abstract Key message High genetic variation in two European maize landraces can be harnessed to improve Gibberella ear rot resistance by integrated genomic tools. Abstract Fusarium graminearum (Fg) causes Gibberella ear rot (GER) in maize leading to yield reduction and contamination of grains with several mycotoxins. This study aimed to elucidate the molecular basis of GER resistance among 500 doubled haploid lines derived from two European maize landraces, “Kemater Landmais Gelb” (KE) and “Petkuser Ferdinand Rot” (PE). The two landraces were analyzed individually using genome-wide association studies and genomic selection (GS). The lines were genotyped with a 600-k maize array and phenotyped for GER severity, days to silking, plant height, and seed-set in four environments using artificial infection with a highly aggressive Fg isolate. High genotypic variances and broad-sense heritabilities were found for all traits. Genotype-environment interaction was important throughout. The phenotypic (r) and genotypic ($${r}_{g}$$ r g ) correlations between GER severity and three agronomic traits were low (r = − 0.27 to 0.20; $${r}_{g}\hspace{0.17em}$$ r g = − 0.32 to 0.22). For GER severity, eight QTLs were detected in KE jointly explaining 34% of the genetic variance. In PE, no significant QTLs for GER severity were detected. No common QTLs were found between GER severity and the three agronomic traits. The mean prediction accuracies ($$\rho $$ ρ ) of weighted GS (wRR-BLUP) were higher than $$\rho $$ ρ of marker-assisted selection (MAS) and unweighted GS (RR-BLUP) for GER severity. Using KE as the training set and PE as the validation set resulted in very low $$\rho $$ ρ that could be improved by using fixed marker effects in the GS model.

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Genetic Variation in Testcrosses and Relationship between Line per se and Testcross Performance for Resistance to Gibberella Ear Rot in Maize

Crop Science ◽

10.2135/cropsci2009.10.0623 ◽

2010 ◽

Vol 50 (5) ◽

pp. 1691-1696 ◽

Cited By ~ 9

Author(s):

C. Bolduan ◽

T. Miedaner ◽

H. F. Utz ◽

B. S. Dhillon ◽

A. E. Melchinger

Keyword(s):

Genetic Variation ◽

Ear Rot ◽

Gibberella Ear Rot ◽

Testcross Performance ◽

Per Se

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The dominance of Fusarium meridionale over F. graminearum causing Gibberella ear rot in Brazil may be due to increased aggressiveness and competitiveness

Phytopathology ◽

10.1094/phyto-11-20-0515-r ◽

2021 ◽

Author(s):

Franklin Jackson Machado ◽

Paulo Kuhnem ◽

Ricardo Trezzi Casa ◽

Nicole McMaster ◽

David Schmale ◽

...

Keyword(s):

Ear Rot ◽

The South ◽

Gibberella Ear Rot ◽

Summer Temperatures ◽

A Minor ◽

Central South

In Brazil, Gibberella ear rot (GER) of maize is caused mainly by Fusarium meridionale (Fmer), while F. graminearum (Fgra) is a minor contributor. To test the hypothesis that Fmer is more aggressive than Fgra on maize, six experiments were conducted in the south (summer), and one in the central-south (winter), totaling seven conditions (year ✕ location ✕ hybrid). Treatments consisted of Fgra or Fmer (two isolates of each) inoculated once four days after silk; inoculated sequentially and alternately (Fgra⇾Fmer or Fmer⇾Fgra) six days apart; or (in the central-south) inoculated sequentially without alternating species (Fmer⇾Fmer or Fgra⇾Fgra). Overall, severity was two times greater in the south (37.0%) where summer temperatures were warmer (20 to 25oC) than in central-south. In the south, severity was greatest in Fmer treatments (67.8%); followed by Fmer⇾Fgra (41.1%); then Fgra⇾Fmer (19.4%); and lowest in Fgra (2.1%), suggesting an antagonistic relationship. In the central-south (15 to 20oC), severity was generally higher in the sequential non-alternating inoculation treatments (Fmer⇾Fmer or Fgra⇾Fgra) than when either species was inoculated only once. Only nivalenol (NIV) or deoxynivalenol (DON) were detected when Fmer or Fgra, respectively, were inoculated singly, or sequentially with no alternation. Both toxins were found in grains harvested from the Fmer⇾Fgra treatment, while only NIV was found in kernels from the Fgra⇾Fmer treatment, suggesting that Fmer was more competitive than Fgra in co-inoculations. The dominance of Fmer as a cause of GER in Brazil may be due in part to its higher aggressiveness and competitiveness compared with Fgra.

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