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Revista Ceres

Print version ISSN 0034-737XOn-line version ISSN 2177-3491


POZZA, Edson Ampélio; POZZA, Adélia Aziz Alexandre  and  BOTELHO, Deila Magna dos Santos. Silicon in plant disease control. Rev. Ceres [online]. 2015, vol.62, n.3, pp.323-331. ISSN 2177-3491.

All essential nutrients can affect the incidence and severity of plant diseases. Although silicon (Si) is not considered as an essential nutrient for plants, it stands out for its potential to decrease disease intensity in many crops. The mechanism of Si action in plant resistance is still unclear. Si deposition in plant cell walls raised the hypothesis of a possible physical barrier to pathogen penetration. However, the increased activity of phenolic compounds, polyphenol oxidases and peroxidases in plants treated with Si demonstrates the involvement of this element in the induction of plant defense responses. The studies examined in this review address the role of Si in disease control and the possible mechanisms involved in the mode of Si action in disease resistance in plants.

Keywords : Management; plant diseases; resistance barriers; soil fertility; resistance inducers.

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