Influence of elevated CO2 concentration on disease development in tomato

•  Changes are reported here in Phytophthora parasitica (root rot) infection of Lycopersicon esculentum (tomato) in response to elevated CO2 concentration. •  Defense-related gene expression in tomato infected with P. parasitica was measured in plants grown at ambient (350 ppm) and elevated (700 ppm...

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Veröffentlicht in:The New phytologist. - 1979. - 149(2001), 3 vom: 20. März, Seite 509-518
1. Verfasser: Jwa, Nam-Soo (VerfasserIn)
Weitere Verfasser: Walling, Linda L
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2001
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article ABA PR proteins Phytophthora parasitica SA disease elevated carbon dioxide (CO2) root rot tomato
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520 |a •  Changes are reported here in Phytophthora parasitica (root rot) infection of Lycopersicon esculentum (tomato) in response to elevated CO2 concentration. •  Defense-related gene expression in tomato infected with P. parasitica was measured in plants grown at ambient (350 ppm) and elevated (700 ppm) CO2 . •  Tomato plants showed a degree of tolerance against P. parasitica at elevated [CO2 ] but there was no significant difference in pathogenesis-related (PR) or wound-response gene expression. In response to P. parasitica, PR mRNAs increased in infected roots of plants grown at elevated [CO2 ] while wound-reponse gene mRNAs were not induced. By contrast, increases in PR mRNAs and wound-responses transcripts in leaves correlated with increases in salicylic acid and abscisic acid, respectively. The [CO2 ] had little effect on the timing or levels of both PR and wound-response mRNAs in infected plants. •  Tomato plants show a degree of tolerance against P. parasitica at elevated [CO2 ]. This tolerance might be due to the effect of carbon dioxide (CO2 ) concentration on the transcription or post-translational turnover of PR proteins, or through increased photosynthesis and water use efficiency 
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