P. Mazzafera

Publications297
h-index47
Citations7,230
Highly Influential Citations356
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Phenol Contents, Oxidase Activities, and the Resistance of Coffee to the Leaf Miner Leucoptera coffeella
We examined the role of phenolic compounds, and the enzymes peroxidase and polyphenol oxidase, in the expression of resistance of coffee plants to Leucoptera coffeella (Lepidoptera: Lyonetiidae). The… Expand
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Abiotic and biotic stresses and changes in the lignin content and composition in plants.
Lignin is a polymer of phenylpropanoid compounds formed through a complex biosynthesis route, represented by a metabolic grid for which most of the genes involved have been sequenced in several… Expand
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Brazilian coffee genome project: an EST-based genomic resource
Coffee is one of the most valuable agricultural commodities and ranks second on international trade exchanges. The genus Coffea belongs to the Rubiaceae family which includes other important plants.… Expand
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Antioxidant metabolism of coffee cell suspension cultures in response to cadmium.
The antioxidant responses of coffee (Coffea arabica L.) cell suspension cultures to cadmium (Cd) were investigated. Cd accumulated very rapidly in the cells and this accumulation was directly… Expand
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Biochemical changes during the development of witches' broom: the most important disease of cocoa in Brazil caused by Crinipellis perniciosa.
Witches' broom disease (WBD) is caused by the hemibiotrophic basidiomycete fungus Crinipellis perniciosa, which is one of the most important diseases of cocoa in the western hemisphere. In this… Expand
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Opinion: nickel and urease in plants: still many knowledge gaps.
We propose experimental strategies to expand our understanding of the role of Ni in plants, beyond the Ni-metallocenter of urease, still the only identified Ni-containing plant enzyme. While Ni has… Expand
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Water stress reveals differential antioxidant responses of tolerant and non-tolerant sugarcane genotypes.
The biochemical responses of the enzymatic antioxidant system of a drought-tolerant cultivar (IACSP 94-2094) and a commercial cultivar in Brazil (IACSP 95-5000) grown under two levels of soil water… Expand
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Effect of water and temperature stress on the content of active constituents of Hypericum brasiliense Choisy.
Hypericum brasiliense is a medicinal herb containing several compounds with important pharmacological activity. In this study, we investigated the effects of water stress (waterlogging and drought)… Expand
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Involvement of calcium oxalate degradation during programmed cell death in Theobroma cacao tissues triggered by the hemibiotrophic fungus Moniliophthora perniciosa
Moniliophthora perniciosa, the causal agent of witches’ broom disease of Theobroma cacao, significantly affected cacao production in South America and Caribbean countries. Host colonization by the… Expand
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Nickel elicits a fast antioxidant response in Coffea arabica cells.
The antioxidant responses of coffee (Coffea arabica L.) cell suspension cultures to nickel (Ni) were investigated. Ni was very rapidly accumulated in the cells and the accumulation could be directly… Expand
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