8 results on '"breeding for resistance"'
Search Results
2. Editorial: Fungal Wheat Diseases: Etiology, Breeding, and Integrated Management
- Author
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María Rosa Simón, Andreas Börner, and Paul C. Struik
- Subjects
breeding for resistance ,durability of resistance ,pathogen populations ,resistance location ,integrated management ,yield ,Plant culture ,SB1-1110 - Published
- 2021
- Full Text
- View/download PDF
3. Editorial: Fungal Wheat Diseases: Etiology, Breeding, and Integrated Management.
- Author
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Simón, María Rosa, Börner, Andreas, and Struik, Paul C.
- Subjects
WHEAT diseases & pests ,MYCOSES ,ETIOLOGY of diseases ,GENOTYPE-environment interaction ,BOTANY ,DIETARY proteins - Abstract
Keywords: breeding for resistance; durability of resistance; pathogen populations; resistance location; integrated management; yield; quality; wheat EN breeding for resistance durability of resistance pathogen populations resistance location integrated management yield quality wheat N.PAG N.PAG 5 04/10/21 20210330 NES 210330 Introduction to Wheat Diseases Agriculture in 2050 will need to produce about 50% more food because of the increase in the world population and the change in diets (FAO, [5]). Furthermore, 79 genes and more than 200 QTL were found for leaf rust and 82 genes and 140 QTL for stripe rust in the seedling and adult stages, respectively. Changes of races and virulence genes in Puccinia striiformis f. sp. tritici, the wheat stripe rust pathogen, in the United States from 1968 to 2009. Fabre et al. reported that some crop mechanisms and the expression of specific genes are needed to stimulate this disease, reviewing recent findings on the existence of wheat susceptibility factors, the role of phytohormones on its development and the role of the effectors such as DON in the susceptibility. [Extracted from the article]
- Published
- 2021
- Full Text
- View/download PDF
4. Influence of Wounding and Temperature on Resistance of Maize Landraces From Mexico to Aflatoxin Contamination
- Author
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Alejandro Ortega-Beltran and Peter J. Cotty
- Subjects
aflatoxin resistance ,maize landrace ,breeding for resistance ,resistance components ,post harvest resistance ,Plant culture ,SB1-1110 - Abstract
Maize is a staple for billions across the globe. However, in tropical and sub-tropical regions, maize is frequently contaminated with aflatoxins by Aspergillus section Flavi fungi. There is an ongoing search for sources of aflatoxin resistance in maize to reduce continuous exposures of human populations to those dangerous mycotoxins. Large variability in susceptibility to aflatoxin contamination exists within maize germplasm. In Mexico, several maize landrace (MLR) accessions possess superior resistance to both Aspergillus infection and aflatoxin contamination but their mechanisms of resistance have not been reported. Influences of kernel integrity on resistance of four resistant and four susceptible MLR accessions were evaluated in laboratory assays. Wounds significantly (P < 0.05) increased susceptibility to aflatoxin contamination even when kernel viability was unaffected. Treatments supporting greater A. flavus reproduction did not (P > 0.05) proportionally support higher aflatoxin accumulation suggesting differential influences by some resistance factors between sporulation and aflatoxin biosynthesis. Physical barriers (i.e., wax and cuticle) prevented both aflatoxin accumulation and A. flavus sporulation in a highly resistant MLR accession. In addition, influence of temperature on aflatoxin contamination was evaluated in both viable and non-viable kernels of a resistant and a susceptible MLR accession, and a commercial hybrid. Both temperature and living embryo status influenced (P < 0.05) resistance to both aflatoxin accumulation and A. flavus sporulation. Lower sporulation on MLR accessions suggests their utilization would result in reduced speed of propagation and associated epidemic increases in disease both in the field and throughout storage. Results from the current study should encourage researchers across the globe to exploit the large potential that MLRs offer to breed for aflatoxin resistant maize. Furthermore, the studies provide support to the importance of resistance based on the living host and maintaining living status to reducing episodes of post-harvest contamination.
- Published
- 2020
- Full Text
- View/download PDF
5. Influence of Wounding and Temperature on Resistance of Maize Landraces From Mexico to Aflatoxin Contamination.
- Author
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Ortega-Beltran, Alejandro and Cotty, Peter J.
- Subjects
CORN disease & pest control ,CORN ,ASPERGILLOSIS ,POPULATION ,MYCOTOXINS ,TEMPERATURE - Abstract
Maize is a staple for billions across the globe. However, in tropical and sub-tropical regions, maize is frequently contaminated with aflatoxins by Aspergillus section Flavi fungi. There is an ongoing search for sources of aflatoxin resistance in maize to reduce continuous exposures of human populations to those dangerous mycotoxins. Large variability in susceptibility to aflatoxin contamination exists within maize germplasm. In Mexico, several maize landrace (MLR) accessions possess superior resistance to both Aspergillus infection and aflatoxin contamination but their mechanisms of resistance have not been reported. Influences of kernel integrity on resistance of four resistant and four susceptible MLR accessions were evaluated in laboratory assays. Wounds significantly (P < 0.05) increased susceptibility to aflatoxin contamination even when kernel viability was unaffected. Treatments supporting greater A. flavus reproduction did not (P > 0.05) proportionally support higher aflatoxin accumulation suggesting differential influences by some resistance factors between sporulation and aflatoxin biosynthesis. Physical barriers (i.e., wax and cuticle) prevented both aflatoxin accumulation and A. flavus sporulation in a highly resistant MLR accession. In addition, influence of temperature on aflatoxin contamination was evaluated in both viable and non-viable kernels of a resistant and a susceptible MLR accession, and a commercial hybrid. Both temperature and living embryo status influenced (P < 0.05) resistance to both aflatoxin accumulation and A. flavus sporulation. Lower sporulation on MLR accessions suggests their utilization would result in reduced speed of propagation and associated epidemic increases in disease both in the field and throughout storage. Results from the current study should encourage researchers across the globe to exploit the large potential that MLRs offer to breed for aflatoxin resistant maize. Furthermore, the studies provide support to the importance of resistance based on the living host and maintaining living status to reducing episodes of post-harvest contamination. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
6. Editorial: Identification, development and use of rootstocks to improve pest and disease resistance of vegetable crops.
- Author
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Thies JA and Panthee DR
- Abstract
Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. The author(s) declared that they were an editorial board member of Frontiers, at the time of submission. This had no impact on the peer review process and the final decision.
- Published
- 2023
- Full Text
- View/download PDF
7. Fungal Wheat Diseases : Etiology, Breeding, and Integrated Management
- Subjects
resistance location ,Crop Physiology ,durability of resistance ,quality ,wheat ,integrated management ,PE&RC ,pathogen populations ,yield ,breeding for resistance - Published
- 2021
8. Influence of Wounding and Temperature on Resistance of Maize Landraces From Mexico to Aflatoxin Contamination
- Author
-
Peter J. Cotty and Alejandro Ortega-Beltran
- Subjects
0106 biological sciences ,0301 basic medicine ,Germplasm ,Aflatoxin ,Plant Science ,post harvest resistance ,lcsh:Plant culture ,Plant disease resistance ,maize landrace ,01 natural sciences ,03 medical and health sciences ,chemistry.chemical_compound ,aflatoxin resistance ,lcsh:SB1-1110 ,heterocyclic compounds ,Mycotoxin ,Original Research ,Aspergillus ,biology ,Host (biology) ,food and beverages ,Contamination ,biology.organism_classification ,breeding for resistance ,Spore ,Horticulture ,030104 developmental biology ,chemistry ,resistance components ,010606 plant biology & botany - Abstract
Maize is a staple for billions across the globe. However, in tropical and sub-tropical regions, maize is frequently contaminated with aflatoxins by Aspergillus section Flavi fungi. There is an ongoing search for sources of aflatoxin resistance in maize to reduce continuous exposures of human populations to those dangerous mycotoxins. Large variability in susceptibility to aflatoxin contamination exists within maize germplasm. In Mexico, several maize landrace (MLR) accessions possess superior resistance to both Aspergillus infection and aflatoxin contamination but their mechanisms of resistance have not been reported. Influences of kernel integrity on resistance of four resistant and four susceptible MLR accessions were evaluated in laboratory assays. Wounds significantly (P < 0.05) increased susceptibility to aflatoxin contamination even when kernel viability was unaffected. Treatments supporting greater A. flavus reproduction did not (P > 0.05) proportionally support higher aflatoxin accumulation suggesting differential influences by some resistance factors between sporulation and aflatoxin biosynthesis. Physical barriers (i.e., wax and cuticle) prevented both aflatoxin accumulation and A. flavus sporulation in a highly resistant MLR accession. In addition, influence of temperature on aflatoxin contamination was evaluated in both viable and non-viable kernels of a resistant and a susceptible MLR accession, and a commercial hybrid. Both temperature and living embryo status influenced (P < 0.05) resistance to both aflatoxin accumulation and A. flavus sporulation. Lower sporulation on MLR accessions suggests their utilization would result in reduced speed of propagation and associated epidemic increases in disease both in the field and throughout storage. Results from the current study should encourage researchers across the globe to exploit the large potential that MLRs offer to breed for aflatoxin resistant maize. Furthermore, the studies provide support to the importance of resistance based on the living host and maintaining living status to reducing episodes of post-harvest contamination.
- Published
- 2020
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