Search

Your search keyword '"Peronospora meconopsidis"' showing total 5 results
Start Over Descriptor "Peronospora meconopsidis"
5 results on '"Peronospora meconopsidis"'

1. Short communication: Local infection of opium poppy leaves by Peronospora somniferi sporangia can give rise to systemic infections and seed infection in resistant cultivars

Author

Miguel Montes-Borrego, Francisco J. Muñoz-Ledesma, Rafael M. Jiménez-Díaz, and Blanca B. Landa

Subjects
Peronospora meconopsidis, disease resistance screening, downy mildew, inoculum source, seed transmission, Agriculture
Abstract

Downy mildew (DM) of opium poppy (Papaver somniferum) caused by Peronospora somniferi is one of the most destructive diseases of this crop due to the systemic nature of infection as compared with local infections caused by Peronospora meconopsidis, the other downy mildew pathogen of this crop. We developed an inoculation method using Peronospora somniferi sporangia as inoculum and demonstrated for the first time that local infection of leaves by sporangia give rise to systemic infections in the plant as well as of seeds. Our results also showed that this inoculation protocol was very effective in reproducing disease symptoms and assessing the resistance response to DM in opium poppy genotypes under field conditions. More interestingly, results indicate that up to 100% of seed samples from some genotypes showing a complete (symptomless) resistant phenotype were infected by the pathogen when seeds were analyzed by a P. somniferi-specific nested-PCR protocol. This latter aspect deserves further attention while breeding opium poppy for resistance to P. somniferi.

Published
2017
Full Text
View/download PDF

2. Local infection of opium poppy leaves by Peronospora somniferi sporangia can give rise to systemic infections and seed infection in resistant cultivars

Author

Montes Borrego, Miguel, Muñoz Ledesma, Francisco J., Jiménez Díaz, Rafael Manuel, Landa del Castillo, Blanca Beatriz, Montes Borrego, Miguel, Muñoz Ledesma, Francisco J., Jiménez Díaz, Rafael Manuel, and Landa del Castillo, Blanca Beatriz

Abstract

Downy mildew (DM) of opium poppy (Papaver somniferum) caused by Peronospora somniferi is one of the most destructive diseases of this crop due to the systemic nature of infection as compared with local infections caused by Peronospora meconopsidis, the other downy mildew pathogen of this crop. We developed an inoculation method using Peronospora somniferi sporangia as inoculum and demonstrated for the first time that local infection of leaves by sporangia give rise to systemic infections in the plant as well as of seeds. Our results also showed that this inoculation protocol was very effective in reproducing disease symptoms and assessing the resistance response to DM in opium poppy genotypes under field conditions. More interestingly, results indicate that up to 100% of seed samples from some genotypes showing a complete (symptomless) resistant phenotype were infected by the pathogen when seeds were analyzed by a P. somniferi-specific nested-PCR protocol. This latter aspect deserves further attention while breeding opium poppy for resistance to P. somniferi.

Published
2017

3. Local infection of opium poppy leaves by Peronospora somniferi sporangia can give rise to systemic infections and seed infection in resistant cultivars

Author

Junta de Andalucía, European Commission, Montes Borrego, Miguel, Muñoz Ledesma, Francisco Javier, Jiménez-Díaz, Rafael M., Landa, Blanca B., Junta de Andalucía, European Commission, Montes Borrego, Miguel, Muñoz Ledesma, Francisco Javier, Jiménez-Díaz, Rafael M., and Landa, Blanca B.

Abstract

Downy mildew (DM) of opium poppy (Papaver somniferum) caused by Peronospora somniferi is one of the most destructive diseases of this crop due to the systemic nature of infection as compared with local infections caused by Peronospora meconopsidis, the other downy mildew pathogen of this crop. We developed an inoculation method using Peronospora somniferi sporangia as inoculum and demonstrated for the first time that local infection of leaves by sporangia give rise to systemic infections in the plant as well as of seeds. Our results also showed that this inoculation protocol was very effective in reproducing disease symptoms and assessing the resistance response to DM in opium poppy genotypes under field conditions. More interestingly, results indicate that up to 100% of seed samples from some genotypes showing a complete (symptomless) resistant phenotype were infected by the pathogen when seeds were analyzed by a P. somniferi-specific nested-PCR protocol. This latter aspect deserves further attention while breeding opium poppy for resistance to P. somniferi.

Published
2017

4. Short communication: Local infection of opium poppy leaves by Peronospora somniferi sporangia can give rise to systemic infections and seed infection in resistant cultivars

Author

Francisco Javier Muñoz Ledesma, Blanca B. Landa, Miguel Montes Borrego, Rafael M. Jiménez-Díaz, Regional Government of Andalusia (project P10-AGR-6497) to MMB, and European Union through the European Regional Development Fund (ERDF)

Subjects
0106 biological sciences, Peronospora meconopsidis, disease resistance screening, downy mildew, inoculum source, seed transmission, Opium Poppy, Biology, 01 natural sciences, Crop, lcsh:Agriculture, Cultivar, Pathogen, Inoculation, Sporangium, lcsh:S, food and beverages, agriculture, plant protection, biology.organism_classification, 010602 entomology, Horticulture, Papaver, Downy mildew, Agronomy and Crop Science, 010606 plant biology & botany
Abstract

Downy mildew (DM) of opium poppy (Papaver somniferum) caused by Peronospora somniferi is one of the most destructive diseases of this crop due to the systemic nature of infection as compared with local infections caused by Peronospora meconopsidis, the other downy mildew pathogen of this crop. We developed an inoculation method using Peronospora somniferi sporangia as inoculum and demonstrated for the first time that local infection of leaves by sporangia give rise to systemic infections in the plant as well as of seeds. Our results also showed that this inoculation protocol was very effective in reproducing disease symptoms and assessing the resistance response to DM in opium poppy genotypes under field conditions. More interestingly, results indicate that up to 100% of seed samples from some genotypes showing a complete (symptomless) resistant phenotype were infected by the pathogen when seeds were analyzed by a P. somniferi-specific nested-PCR protocol. This latter aspect deserves further attention while breeding opium poppy for resistance to P. somniferi.

Published
2017

5. First Report of Downy Mildew on Opium Poppy Caused by Peronospora meconopsidis in India

Author

Soni Gupta, Asifa Khan, and O. P. Dhawan

Subjects
0106 biological sciences, 0301 basic medicine, 03 medical and health sciences, Horticulture, 030104 developmental biology, Peronospora meconopsidis, Downy mildew, Plant Science, Opium Poppy, Biology, 01 natural sciences, Agronomy and Crop Science, 010606 plant biology & botany
Published
2016

Catalog

Books, media, physical & digital resources
See catalog results