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Title: Effect of Chemical Resistance Inducers on the Control of Monosporascus Root Rot and Vine Decline of Melon
Authors: Aleandri, Maria Pia
Reda, Roberto
Tagliavento, Vincenzo
Magro, Paolo
Chilosi, Gabriele
Keywords: chemically induced resistance;Cucumis melo;pathogenesis related proteins;Monosporascus cannonballus
Issue Date: 2010
Publisher: Phytopathologia Mediterranea
The effect of the resistance inducers methyl jasmonate (MeJA), acybenzolar-S-methyl (BTH) and dipotassium hydrogenphosphate (K2HPO4) was tested by seed soaking and by foliar application to determine whether these resistance inducers controlled root rot and vine decline of melon caused by Monosporascus cannonballus.
Tests were carried out in pots and under field conditions in a two-year trial. Application of MeJA to melon seed significantly reduced symptoms of melon root rot and vine decline in soil artificially inoculated with M. cannonballus, and seeds treated with BTH and K2HPO4 produced plants with a slightly greater resistance
to the pathogen. Greenhouse experiments in soil naturally infected with M. cannonballus in 2006 showed that MeJA treatments by seed soaking followed by foliar applications decreased the severity of the disease.
In 2007, both MeJA and BTH significantly reduced root rot and vine decline, but K2HPO4 was ineffective. The resistance inducers differentially induced the synthesis of a number of pathogenesis related (PR) protein isoenzymes, markers of induced resistance in the root system. Using MeJA to induce resistance to root rot and
vine decline of melon caused by M. cannonballus may provide a practical supplement to an environmentallyfriendly
disease management when it is combined with appropriate integrated agronomic practices.
Appears in Collections:DIPROP - Archivio della produzione scientifica

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