Association mapping and genomic prediction for ear rot disease caused by Fusarium verticillioides in a tropical maize germplasm

Crop Science ◽  
2020 ◽  
Vol 60 (6) ◽  
pp. 2867-2881
Author(s):  
Maurício Carlos Kuki ◽  
Ronald José Barth Pinto ◽  
Filipe Augusto Bengosi Bertagna ◽  
Dauri José Tessmann ◽  
Antônio Teixeira do Amaral ◽  
...  
Keyword(s):  
Association Mapping ◽  
Genomic Prediction ◽  
Fusarium Verticillioides ◽  
Ear Rot ◽  
Tropical Maize ◽  
Maize Germplasm ◽  
Rot Disease

Association mapping and pathway analysis of ear rot disease caused by Aspergillus flavus in a panel of tropical maize germplasm

Crop Science ◽  
2021 ◽  
Author(s):  
Filipe Augusto Bengosi Bertagna ◽  
Maurício Carlos Kuki ◽  
Hugo Zeni Neto ◽  
Dauri José Tessmann ◽  
Ronald José Barth Pinto ◽  
...  
Keyword(s):  
Association Mapping ◽  
Aspergillus Flavus ◽  
Pathway Analysis ◽  
Ear Rot ◽  
Tropical Maize ◽  
Maize Germplasm ◽  
Rot Disease

scholarly journals Rhamnolipid Biosurfactant against Fusarium verticillioides to Control Stalk and Ear Rot Disease of Maize

2016 ◽  
Vol 7 ◽  
Author(s):  
Siddhartha N. Borah ◽  
Debahuti Goswami ◽  
Hridip K. Sarma ◽  
Swaranjit S. Cameotra ◽  
Suresh Deka
Keyword(s):  
Fusarium Verticillioides ◽  
Ear Rot ◽  
Rot Disease ◽  
Rhamnolipid Biosurfactant

scholarly journals Complex Genetic System Involved in Fusarium Ear Rot Resistance in Maize as Revealed by GWAS, Bulked Sample Analysis, and Genomic Prediction

Plant Disease ◽  
2020 ◽  
Vol 104 (6) ◽  
pp. 1725-1735 ◽  
Author(s):  
Zifeng Guo ◽  
Cheng Zou ◽  
Xiaogang Liu ◽  
Shanhong Wang ◽  
Wen-Xue Li ◽  
...  
Keyword(s):  
Confidence Level ◽  
Genomic Prediction ◽  
Complex Traits ◽  
Genome Wide Association Study ◽  
Fusarium Verticillioides ◽  
Chromosome 1 ◽  
Nucleotide Polymorphisms ◽  
Fusarium Ear Rot ◽  
Ear Rot ◽  
Sample Analysis

Fusarium ear rot (FER) caused by Fusarium verticillioides is one of the most prevalent maize diseases in China and worldwide. Resistance to FER is a complex trait controlled by multiple genes highly affected by environment. In this paper, genome-wide association study (GWAS), bulked sample analysis (BSA), and genomic prediction were performed for understanding FER resistance using 509 diverse inbred lines, which were genotyped by 37,801 high-quality single-nucleotide polymorphisms (SNPs). Ear rot evaluation was performed using artificial inoculation in four environments in China: Xinxiang, Henan, and Shunyi, Beijing, during 2017 and 2018. Significant phenotypic and genetic variation for FER severity was observed, and FER resistance was significantly correlated among the four environments with a generalized heritability of 0.78. GWAS identified 23 SNPs that were associated with FER resistance, 2 of which (1_226233417 on chromosome 1 and 10_14501044 on chromosome 10) were associated at threshold of 2.65 × 10−7 [−log(0.01/37,801)]. Using BSA, resistance quantitative trait loci were identified on chromosomes 3, 4, 7, 9, and 10 at the 90% confidence level and on chromosomes 3 and 10 at the 95% confidence level. A key region, bin 10.03, was detected by both GWAS and BSA. Genomic prediction for FER resistance showed that the prediction accuracy by trait-related markers was higher than that by randomly selected markers under different levels of marker density. Marker-assisted selection using genomic prediction could be an efficient strategy for genetic improvement for complex traits like FER resistance.

scholarly journals Genome-wide association and genomic prediction of resistance to maize lethal necrosis disease in tropical maize germplasm

2015 ◽  
Vol 128 (10) ◽  
pp. 1957-1968 ◽  
Author(s):  
Manje Gowda ◽  
Biswanath Das ◽  
Dan Makumbi ◽  
Raman Babu ◽  
Kassa Semagn ◽  
...  
Keyword(s):  
Genomic Prediction ◽  
Genome Wide Association ◽  
Tropical Maize ◽  
Maize Germplasm ◽  
Genome Wide

scholarly journals Bioguided Isolation, Characterization, and Biotransformation by Fusarium verticillioides of Maize Kernel Compounds That Inhibit Fumonisin Production

2014 ◽  
Vol 27 (10) ◽  
pp. 1148-1158 ◽  
Author(s):  
Vessela Atanasova-Penichon ◽  
Stéphane Bernillon ◽  
Gisèle Marchegay ◽  
Aurélia Lornac ◽  
Laetitia Pinson-Gadais ◽  
...  
Keyword(s):  
Chlorogenic Acid ◽  
Inhibitory Activity ◽  
Fusarium Verticillioides ◽  
Fusarium Ear Rot ◽  
Ear Rot ◽  
In Planta ◽  
Maize Genotypes ◽  
Maize Genotype ◽  
Rot Disease ◽  
Susceptible Group

Fusarium verticillioides infects maize ears, causing ear rot disease and contamination of grain with fumonisin mycotoxins. This contamination can be reduced by the presence of bioactive compounds in kernels that are able to inhibit fumonisin biosynthesis. To identify such compounds, we used kernels from a maize genotype with moderate susceptibility to F. verticillioides, harvested at the milk-dough stage (i.e., when fumonisin production initiates in planta), and applied a bioguided fractionation approach. Chlorogenic acid was the most abundant compound in the purified active fraction and its contribution to fumonisin inhibitory activity was up to 70%. Moreover, using a set of maize genotypes with different levels of susceptibility, chlorogenic acid was shown to be significantly higher in immature kernels of the moderately susceptible group. Altogether, our data indicate that chlorogenic acid may considerably contribute to either maize resistance to Fusarium ear rot, fumonisin accumulation, or both. We further investigated the mechanisms involved in the inhibition of fumonisin production by chlorogenic acid and one of its hydrolyzed products, caffeic acid, by following their metabolic fate in supplemented F. verticillioides broths. Our data indicate that F. verticillioides was able to biotransform these phenolic compounds and that the resulting products can contribute to their inhibitory activity.

scholarly journals EXPLORATION AND SCREENING FOR ENDOPHYTIC MICROBES OF MAIZE PLANT ROOT AGAINST FUSARIUM VERTICILLIOIDES

2018 ◽  
Vol 18 (1) ◽  
pp. 57
Author(s):  
Rahmat Jahuddin ◽  
Jamila . ◽  
Awaluddin . ◽  
Suriani .
Keyword(s):  
Plant Root ◽  
Fusarium Verticillioides ◽  
Culture Method ◽  
Maize Plant ◽  
Dual Culture ◽  
Ear Rot ◽  
Sprout Length ◽  
Maize Roots ◽  
Stimulate Plant Growth ◽  
Rot Disease

Exploration and Screening for Endophytic Microbes of Maize Plant Root against Fusarium verticillioides. Fusarium verticilloides is an important pathogen of maize which can attack cob and stem causing ear rot and stalk rot disease. Fusarium ear rot disease needs to get a serious attention because the mycotoxins produced by this pathogen very harmful for consumers. The aim of this study was to screen maize roots endophytic microbes as antagonist to F. verticilloides. Endophytes microbial exploration is done by taking samples of local roots of South Sulawesi and hybrid maizes in Soppeng Regency then isolated in Biological Laboratory of Islamic University of Makassar. The endophytes were then tested their effectiveness on inhibiting growth of mycelia pathogenic F. verticilloides by using dual culture method and tested the suppressing ability of F. verticilloides on maize seed and their influence on seed sprout length. The results showed that there were 8 endophytic microbes consisting of 4 isolates of the fungus group namely HS-01, HS-02, HS-04, LS-01 and 4 isolates from bacterial group namely HS-03, LS-02, LS-03, LS-04. While the results of microbial effectiveness testing on pathogenic F. verticilloides showed that HS-04 has the highest percentage of inhibition followed by isolate HS-01, HS-02 and LS-02. HS-04 isolate also showed the ability to suppress F. verticilloides attacks on corn seeds at 77.78%. The highest seed sprout length was shown in LS-02 isolate application about 10.57 cm. Thus it can be concluded that there were 3 potentially endophytic microbes to control the F. verticilloides namely HS-04, HS-01 and LS-02. The ability to stimulate plant growth became one of considerations to select these three microbes.

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