J
James G. Menzies
Researcher at Agriculture and Agri-Food Canada
Publications - 132
Citations - 6771
James G. Menzies is an academic researcher from Agriculture and Agri-Food Canada. The author has contributed to research in topics: Population & Powdery mildew. The author has an hindex of 36, co-authored 128 publications receiving 5893 citations.
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Journal ArticleDOI
Silicon and plant disease resistance against pathogenic fungi
TL;DR: Silicon possesses unique biochemical properties that may explain its bioactivity as a regulator of plant defense mechanisms, and may interact with several key components of plant stress signaling systems leading to induced resistance.
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Silicon-mediated accumulation of flavonoid phytoalexins in cucumber.
TL;DR: Conclusive evidence is presented that silicon is involved in the increased resistance of cucumber to powdery mildew by enhancing the antifungal activity of infected leaves by activating low-molecular-weight metabolites.
Journal ArticleDOI
The controversies of silicon's role in plant biology.
Devrim Coskun,Rupesh Deshmukh,Humira Sonah,James G. Menzies,Olivia Reynolds,Jian Feng Ma,Herbert J. Kronzucker,R. R. Bélanger +7 more
TL;DR: It is argued that much of the empirical evidence, in particular that derived from recent functional genomics, is at odds with many of the mechanistic assertions surrounding Si's role, and proposes a working model, which is proposed, the 'apoplastic obstruction hypothesis', which attempts to unify the various observations on Si's beneficial influences on plant growth and yield.
Journal ArticleDOI
Cytological Evidence of an Active Role of Silicon in Wheat Resistance to Powdery Mildew (Blumeria graminis f. sp. tritici).
TL;DR: Results strongly suggest that Si mediates active localized cell defenses against B. tritici, and is associated with altered integrity of haustoria in a manner similar to localized phytoalexins as reported from other pathosystems.
Journal ArticleDOI
Silicon enhances the accumulation of diterpenoid phytoalexins in rice: a potential mechanism for blast resistance.
Fabrício Ávila Rodrigues,David J. McNally,Lawrence E. Datnoff,Jeffrey B. Jones,Caroline Labbé,Nicole Benhamou,James G. Menzies,R. R. Bélanger +7 more
TL;DR: The results of this study strongly suggest that Si plays an active role in the resistance of rice to blast rather than the formation of a physical barrier to penetration by M. grisea.