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Bioassimilable sulphur provides effective control of Oidium neolycopersici in tomato, enhancing the plant immune system
Author(s) -
Llorens Eugenio,
AgustíBrisach Carlos,
GonzálezHernández Ana I,
Troncho Pilar,
Vicedo Begonya,
Yuste Teresa,
Orero Mayte,
Ledó Carlos,
GarcíaAgustín Pilar,
Lapeña Leonor
Publication year - 2017
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.4419
Subject(s) - powdery mildew , callose , biology , pesticide , horticulture , agronomy , botany , cell wall
BACKGROUND Developments of alternatives to the use of chemical pesticides to control pests are focused on the induction of natural plant defences. The study of new compounds based on liquid bioassimilable sulphur and its effect as an inductor of the immune system of plants would provide an alternative option to farmers to enhance plant resistance against pathogen attacks such as powdery mildew. In order to elucidate the efficacy of this compound in tomato against powdery mildew, we tested several treatments: curative foliar, preventive foliar, preventive in soil drench and combining preventive in soil drench and curative foliar. RESULTS In all cases, treated plants showed lower infection development, better physiological parameters and a higher level of chlorophyll. We also observed better performance in parameters involved in plant resistance such as antioxidant response, callose deposition and hormonal levels. CONCLUSION The results indicate that preventive and curative treatments can be highly effective for the prevention and control of powdery mildew in tomato plants. Foliar treatments are able to stop the pathogen development when they are applied as curative. Soil drench treatments induce immune response mechanisms of plants, increasing significantly callose deposition and promoting plant development. © 2016 Society of Chemical Industry