Premium
Influence of elevated CO 2 concentration on disease development in tomato
Author(s) -
Jwa NamSoo,
Walling Linda L.
Publication year - 2001
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1046/j.1469-8137.2001.00063.x
Subject(s) - salicylic acid , abscisic acid , lycopersicon , photosynthesis , biology , gene expression , pathogenesis related protein , gene , horticulture , botany , pathogenesis , solanaceae , biochemistry , immunology
Summary• Changes are reported here in Phytophthora parasitica (root rot) infection of Lycopersicon esculentum (tomato) in response to elevated CO 2 concentration. • Defense‐related gene expression in tomato infected with P. parasitica was measured in plants grown at ambient (350 ppm) and elevated (700 ppm) CO 2 . • Tomato plants showed a degree of tolerance against P. parasitica at elevated [CO 2 ] 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 [CO 2 ] 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 [CO 2 ] 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 [CO 2 ]. This tolerance might be due to the effect of carbon dioxide (CO 2 ) concentration on the transcription or post‐translational turnover of PR proteins, or through increased photosynthesis and water use efficiency.