A multicomponent, elicitor-inducible cystatin complex in tomato, Solanum lycopersicum

We assessed the ability of the fungal elicitor arachidonic acid to induce cystatin genes in tomato (Solanum lycopersicum), using a cDNA expression library from arachidonate-treated leaves. The cDNAs of two novel cystatins were isolated, coding for an approx. 11-kDa protein, SlCYS10; and for a 23.6-k...

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Veröffentlicht in:The New phytologist. - 1979. - 173(2007), 4 vom: 01., Seite 841-851
1. Verfasser: Girard, Cécile (VerfasserIn)
Weitere Verfasser: Rivard, Daniel, Kiggundu, Andrew, Kunert, Karl, Gleddie, Stephen C, Cloutier, Conrad, Michaud, Dominique
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2007
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article Research Support, Non-U.S. Gov't Acetates Arachidonic Acids Cyclopentanes Cystatins Cysteine Proteinase Inhibitors DNA, Complementary DNA, Plant Multiprotein Complexes mehr... Oxylipins Recombinant Proteins methyl jasmonate 900N171A0F
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520 |a We assessed the ability of the fungal elicitor arachidonic acid to induce cystatin genes in tomato (Solanum lycopersicum), using a cDNA expression library from arachidonate-treated leaves. The cDNAs of two novel cystatins were isolated, coding for an approx. 11-kDa protein, SlCYS10; and for a 23.6-kDa protein, SlCYS9, bearing an N-terminal signal peptide and a long, 11.5-kDa extension at the C terminus. Both genes were induced by arachidonate but not by methyl jasmonate, an inducer of the 88-kDa eight-unit cystatin, multicystatin, accumulated in the cytosol of leaf cells upon herbivory. A truncated form of SlCYS9, tSlCYS9, was produced by deletion of the C-terminal extension to assess the influence of this structural element on the cystatin moiety. As shown by kinetic and stability assays with recombinant variants expressed in Escherichia coli, deleting the extension influenced both the overall stability and inhibitory potency of SlCYS9 against cysteine proteases of herbivorous organisms. These findings provide evidence for a multicomponent elicitor-inducible cystatin complex in tomato, including at least 10 cystatin units produced via two metabolic routes 
650 4 |a Journal Article 
650 4 |a Research Support, Non-U.S. Gov't 
650 7 |a Acetates  |2 NLM 
650 7 |a Arachidonic Acids  |2 NLM 
650 7 |a Cyclopentanes  |2 NLM 
650 7 |a Cystatins  |2 NLM 
650 7 |a Cysteine Proteinase Inhibitors  |2 NLM 
650 7 |a DNA, Complementary  |2 NLM 
650 7 |a DNA, Plant  |2 NLM 
650 7 |a Multiprotein Complexes  |2 NLM 
650 7 |a Oxylipins  |2 NLM 
650 7 |a Recombinant Proteins  |2 NLM 
650 7 |a methyl jasmonate  |2 NLM 
650 7 |a 900N171A0F  |2 NLM 
700 1 |a Rivard, Daniel  |e verfasserin  |4 aut 
700 1 |a Kiggundu, Andrew  |e verfasserin  |4 aut 
700 1 |a Kunert, Karl  |e verfasserin  |4 aut 
700 1 |a Gleddie, Stephen C  |e verfasserin  |4 aut 
700 1 |a Cloutier, Conrad  |e verfasserin  |4 aut 
700 1 |a Michaud, Dominique  |e verfasserin  |4 aut 
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