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Claudete Santa-Catarina
Researcher at State University of Norte Fluminense
Publications - 91
Citations - 2608
Claudete Santa-Catarina is an academic researcher from State University of Norte Fluminense. The author has contributed to research in topics: Somatic embryogenesis & Somatic cell. The author has an hindex of 25, co-authored 78 publications receiving 2128 citations. Previous affiliations of Claudete Santa-Catarina include University of São Paulo.
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Journal ArticleDOI
Polyamines Induce Rapid Biosynthesis of Nitric Oxide (NO) in Arabidopsis thaliana Seedlings
Ni Ni Tun,Claudete Santa-Catarina,Tahmina Begum,Vanildo Silveira,Walter Handro,Eny Iochevet Segal Floh,Günther F. E. Scherer +6 more
TL;DR: It is observed that PAs induced NO biosynthesis in specific tissues in Arabidopsis seedlings, and spermine, the most active PA, stimulated NO release with no apparent lag phase.
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Antifungal activity of PvD1 defensin involves plasma membrane permeabilization, inhibition of medium acidification, and induction of ROS in fungi cells.
Érica O. Mello,Suzanna F. F. Ribeiro,André de Oliveira Carvalho,Izabela S. Santos,Maura Da Cunha,Claudete Santa-Catarina,Valdirene Moreira Gomes +6 more
TL;DR: The defensin PvD1 is able to inhibit glucose-stimulated acidification of the medium by yeast cells and filamentous fungi, as well as to induce the production of reactive oxygen species and nitric oxide in C. albicans and F. oxysporum cells.
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Polyamine effects on the endogenous polyamine contents, nitric oxide release, growth and differentiation of embryogenic suspension cultures of Araucaria angustifolia (Bert.) O. Ktze.
Vanildo Silveira,Claudete Santa-Catarina,Ni Ni Tun,Günther F. E. Scherer,Walter Handro,Miguel Pedro Guerra,Eny Iochevet Segal Floh +6 more
TL;DR: It was observed that embryonic cells of A. angustifolia accumulated more NO than the suspensor cells, suggesting that NO biosynthesis might be related to the maintenance of the polarity (embryonic–suspensor cells) present at the PEM II stage.
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Polyamine effects on growth and endogenous hormones levels in Araucaria angustifolia embryogenic cultures
Neusa Steiner,Claudete Santa-Catarina,Vanildo Silveira,Eny Iochevet Segal Floh,Miguel Pedro Guerra +4 more
TL;DR: PAs supplemented to a PGR-free BM medium, mainly Put and Spm, increased the endogenous IAA and ABA levels, showing a direct relationship -between PAs levels and A BA accumulation.
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Humic acid effect on catalase activity and the generation of reactive oxygen species in corn (Zea mays).
TL;DR: The results of this experiment indicate that the effects of HA are dependent on ROS generation, which act as a messenger that induces root growth and the emission of LRs.