Effect of Chemical Resistance Inducers on the Control of Monosporascus Root Rot and Vine Decline of Melon
Year: 2010
Type: article
Abstract: 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.\nTests 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\nto 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.\nIn 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\nvine decline of melon caused by M. cannonballus may provide a practical supplement to an environmentallyfriendly\ndisease management when it is combined with appropriate integrated agronomic practices.
Authors: Maria Pia Aleandri, Roberto Reda, Vincenzo Tagliavento, Paolo Magro, Gabriele Chilosi
Institution: Università degli Studi della Tuscia
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: green
OpenAlex ID: W1751468586