Host-parasite relationships in fall-sown sugar beets infected by the stem and bulb nematode, Ditylenchus dipsaci
Stunted growth of fall-sown sugar beets (Beta vulgaris) associated with high incidence of crownroot infections and large soil infestations by Ditylenchus dipsaci were observed at the end of the crop growing season in southern Spain by early June 2005. The largest proportion (75%) of the nematode life-stages in plant and soil was the fourth-stage juvenile. The large number (up to 3,750 nematodes per gram of fresh tissue) of D. dipsaci individuals and severe anatomical alterations observed in storage sugar beet roots suggest that the stem and bulb nematode is the causal agent of the impaired growth of sugar beets observed in commercial fields. Observed morphological traits of nematode specimens and results of specific polymerase chain reaction (PCR) and phylogenetic analyses confirmed that the population of D. dipsaci infecting sugar beet belongs to the normal (nongiant) biological type of the nematode. Results of host-range bioassays indicated that the population of D. dipsaci infecting sugar beet in southern Spain reproduces on pea (including seeds and pods), onion, potato, spinach, and tomato, but not on bean, cotton, maize, and tobacco. These results indicate that D. dipsaci may be an important constraint for sugar beet crops in the affected area, but also for other important crops commonly used in rotation with them.
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American Phytopathological Society
2007-01
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Subjects: | Emerging disease, Histopathology, Phenotypic and molecular diagnosis, |
Online Access: | http://hdl.handle.net/10261/11026 |
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dig-ias-es-10261-110262019-04-24T11:10:14Z Host-parasite relationships in fall-sown sugar beets infected by the stem and bulb nematode, Ditylenchus dipsaci Castillo, Pablo Vovlas, Nicola Azpilicueta, Andrea Landa, Blanca B. Jiménez-Díaz, Rafael M. Emerging disease Histopathology Phenotypic and molecular diagnosis Stunted growth of fall-sown sugar beets (Beta vulgaris) associated with high incidence of crownroot infections and large soil infestations by Ditylenchus dipsaci were observed at the end of the crop growing season in southern Spain by early June 2005. The largest proportion (75%) of the nematode life-stages in plant and soil was the fourth-stage juvenile. The large number (up to 3,750 nematodes per gram of fresh tissue) of D. dipsaci individuals and severe anatomical alterations observed in storage sugar beet roots suggest that the stem and bulb nematode is the causal agent of the impaired growth of sugar beets observed in commercial fields. Observed morphological traits of nematode specimens and results of specific polymerase chain reaction (PCR) and phylogenetic analyses confirmed that the population of D. dipsaci infecting sugar beet belongs to the normal (nongiant) biological type of the nematode. Results of host-range bioassays indicated that the population of D. dipsaci infecting sugar beet in southern Spain reproduces on pea (including seeds and pods), onion, potato, spinach, and tomato, but not on bean, cotton, maize, and tobacco. These results indicate that D. dipsaci may be an important constraint for sugar beet crops in the affected area, but also for other important crops commonly used in rotation with them. Peer reviewed 2009-02-26T10:29:58Z 2009-02-26T10:29:58Z 2007-01 artículo http://purl.org/coar/resource_type/c_6501 Plant Disease; Volume 91, Number 1, Pages 71-79 0191-2917 http://hdl.handle.net/10261/11026 10.1094/PD-91-0071 en http://dx.doi.org/10.1094/PD-91-0071 none 4085 bytes image/gif American Phytopathological Society |
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Emerging disease Histopathology Phenotypic and molecular diagnosis Emerging disease Histopathology Phenotypic and molecular diagnosis Castillo, Pablo Vovlas, Nicola Azpilicueta, Andrea Landa, Blanca B. Jiménez-Díaz, Rafael M. Host-parasite relationships in fall-sown sugar beets infected by the stem and bulb nematode, Ditylenchus dipsaci |
description |
Stunted growth of fall-sown sugar beets (Beta vulgaris) associated with high incidence of crownroot infections and large soil infestations by Ditylenchus dipsaci were observed at the end of the crop growing season in southern Spain by early June 2005. The largest proportion (75%) of the nematode life-stages in plant and soil was the fourth-stage juvenile. The large number (up to 3,750 nematodes per gram of fresh tissue) of D. dipsaci individuals and severe anatomical alterations observed in storage sugar beet roots suggest that the stem and bulb nematode is the causal agent of the impaired growth of sugar beets observed in commercial fields. Observed morphological traits of nematode specimens and results of specific polymerase chain reaction (PCR) and phylogenetic analyses confirmed that the population of D. dipsaci infecting sugar beet belongs to the normal (nongiant) biological type of the nematode. Results of host-range bioassays indicated that the population of D. dipsaci infecting sugar beet in southern Spain reproduces on pea (including seeds and pods), onion, potato, spinach, and tomato, but not on bean, cotton, maize, and tobacco. These results indicate that D. dipsaci may be an important constraint for sugar beet crops in the affected area, but also for other important crops commonly used in rotation with them. |
format |
artículo |
topic_facet |
Emerging disease Histopathology Phenotypic and molecular diagnosis |
author |
Castillo, Pablo Vovlas, Nicola Azpilicueta, Andrea Landa, Blanca B. Jiménez-Díaz, Rafael M. |
author_facet |
Castillo, Pablo Vovlas, Nicola Azpilicueta, Andrea Landa, Blanca B. Jiménez-Díaz, Rafael M. |
author_sort |
Castillo, Pablo |
title |
Host-parasite relationships in fall-sown sugar beets infected by the stem and bulb nematode, Ditylenchus dipsaci |
title_short |
Host-parasite relationships in fall-sown sugar beets infected by the stem and bulb nematode, Ditylenchus dipsaci |
title_full |
Host-parasite relationships in fall-sown sugar beets infected by the stem and bulb nematode, Ditylenchus dipsaci |
title_fullStr |
Host-parasite relationships in fall-sown sugar beets infected by the stem and bulb nematode, Ditylenchus dipsaci |
title_full_unstemmed |
Host-parasite relationships in fall-sown sugar beets infected by the stem and bulb nematode, Ditylenchus dipsaci |
title_sort |
host-parasite relationships in fall-sown sugar beets infected by the stem and bulb nematode, ditylenchus dipsaci |
publisher |
American Phytopathological Society |
publishDate |
2007-01 |
url |
http://hdl.handle.net/10261/11026 |
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