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Your search keyword '"Vangronsveld, Jaco"' showing total 36 results
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36 results on '"Vangronsveld, Jaco"'

1. Unraveling the mechanisms controlling Cd accumulation and Cd‐tolerance in Brachiaria decumbens and Panicum maximum under summer and winter weather conditions

Author

Rabêlo, Flávio Henrique Silveira, primary, Gaziola, Salete Aparecida, additional, Rossi, Monica Lanzoni, additional, Silveira, Neidiquele Maria, additional, Wójcik, Małgorzata, additional, Bajguz, Andrzej, additional, Piotrowska‐Niczyporuk, Alicja, additional, Lavres, José, additional, Linhares, Francisco Scaglia, additional, Azevedo, Ricardo Antunes, additional, Vangronsveld, Jaco, additional, and Alleoni, Luís Reynaldo Ferracciú, additional

Published
2020
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3. An Ordered and Fail‐Safe Electrical Network in Cable Bacteria

Author

Thiruvallur Eachambadi, Raghavendran, primary, Bonné, Robin, additional, Cornelissen, Rob, additional, Hidalgo‐Martinez, Silvia, additional, Vangronsveld, Jaco, additional, Meysman, Filip J. R., additional, Valcke, Roland, additional, Cleuren, Bart, additional, and Manca, Jean V., additional

Published
2020
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4. A novel, highly conserved metallothionein family in basidiomycete fungi and characterization of two representative SlMTa and SlMTb genes in the ectomycorrhizal fungus Suillus luteus

Author

Nguyen, Hoai, Rineau, Francois, Vangronsveld, Jaco, Cuypers, Ann, Colpaert, Jan V., and Ruytinx, Joske

Abstract

The basidiomycete Suillus luteus is an important member of the ectomycorrhizal community that thrives in heavy metal polluted soils covered with pioneer pine forests. This study aimed to identify potential heavy metal chelators in S. luteus. Two metallothionein (MT) coding genes, SlMTa and SlMTb, were identified. When heterologously expressed in yeast, both SlMTa and SlMTb can rescue the Cu sensitive mutant from Cu toxicity. In S. luteus, transcription of both SlMTa and SlMTb is induced by Cu but not Cd or Zn. Several putative Cu-sensing and metal-response elements are present in the promoter sequences. These results indicate that SlMTa and SlMTb function as Cu-thioneins. Homologs of the S. luteus MTs are present in 49 species belonging to 10 different orders of the subphylum Agaricomycotina and are remarkably conserved. The length of the proteins, number and distribution of cysteine residues indicate a novel family of fungal MTs. The ubiquitous and highly conserved features of these MTs suggest that they are important for basic cellular functions in species in the subphylum Agaricomycotina. This work was financially supported by the Research Foundation Flanders (FWO-Vlaanderen) and the Hasselt University Methusalem project 08M03VGRJ.

Published
2017

5. Cd-induced Cu deficiency responses in Arabidopsis thaliana: are phytochelatins involved?

Author

Gielen, Heidi, Vangronsveld, Jaco, and Cuypers, Ann

Subjects
Arabidopsis, cadmium, copper, Cu homeostasis, metal stress, phytochelatins, SPL7
Abstract

Cadmium (Cd) exposure can disturb the homeostasis of essential elements. In Arabidopsis thaliana, Cd induces a squamosa promoter binding protein-like 7 (SPL7)-dependent Cu deficiency response. We investigated how Cd induces a Cu deficiency response. The Cu deficiency response consists of the active SPL7 transcription factor binding to GTAC motifs in promoters of among others several Cu transporters, a Cu chaperone, and cupro-miRNAs to regulate Cu homeostasis. We demonstrated that the addition of supplemental Cu to Cd-exposed A.thaliana plants diminished the Cu deficiency response in roots, while it even disappeared in leaves. Exposure of plants to Cd in combination with extra Cu reduced Cd levels in both roots and leaves resulting in an improved cellular oxidative state. Furthermore, we demonstrated a role for phytochelatins (PCs) in the Cd-induced Cu deficiency response, because it was reduced in roots of cad1-3 mutant plants exposed to Cd. In conclusion, a working mechanism is provided in which it is suggested that Cd increases PC levels that can complex both Cd and Cu. This results in cellular Cu deficiency and subsequently the activation of SPL7 and hence the induction of the Cu deficiency response. Summary statement We demonstrated that addition of supplemental Cu to Cd-exposed Arabidopsis thaliana plants diminished the SPL7-dependent Cu deficiency response in roots, while it even disappeared in leaves. Moreover, in roots of phytochelatin (PC-) deficient cad1-3 mutants, this Cu deficiency response was reduced. Therefore, a working mechanism is provided in which it is suggested that Cd increases PC levels that can complex both Cd and Cu. This results in cellular Cu deficiency and subsequently the activation of SPL7 and hence the induction of the Cu deficiency response. This work was supported by Hasselt University by a PhD grant for Heidi Gielen and through the Methusalem project [08M03VGRJ].

Published
2017

17. Correlation between hormonal homeostasis and morphogenic responses in Arabidopsis thaliana seedlings growing in a Cd/Cu/Zn multi‐pollution context

Author

Sofo, Adriano, primary, Vitti, Antonella, additional, Nuzzaci, Maria, additional, Tataranni, Giuseppe, additional, Scopa, Antonio, additional, Vangronsveld, Jaco, additional, Remans, Tony, additional, Falasca, Giuseppina, additional, Altamura, Maria M., additional, Degola, Francesca, additional, and Sanità di Toppi, Luigi, additional

Published
2013
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36. Enhanced Degradation of Diesel in the Rhizosphere of after Inoculation with Diesel-Degrading and Plant Growth-Promoting Bacterial Strains.

Author

Balseiro-Romero M, Gkorezis P, Kidd PS, Vangronsveld J, and Monterroso C

Subjects
Soil, Soil Microbiology, Biodegradation, Environmental, Gasoline, Rhizosphere, Soil Pollutants
Abstract

The association of plants and rhizospheric bacteria provides a successful strategy to clean up contaminated soils. The purpose of this work was to enhance diesel degradation in rhizosphere by inoculation with selected bacterial strains: a diesel degrader (D), plant growth-promoting (PGP) strains, or a combination (D+PGP). Plants were set up in pots with the A or B horizon of an umbric Cambisol (A and B) spiked with diesel (1.25%, w/w). After 1 mo, the dissipation of diesel range organics (DRO) with respect to = 0 (i.e., 1 wk after preparing the pots with the seedlings) concentration was significantly higher in inoculated than in noninoculated (NI) pots: The highest DRO losses were found in A D+PGP pots (close to 15-20% higher than NI) and in B D pots (close to 10% higher). The water-extractable DRO fraction was significantly higher at = 30 d (15-25%) compared with = 0 (<5%), probably due to the effects of plant root exudates and biosurfactants produced by the degrader strain. The results of this experiment reflect the importance of the partnerships between plants and bacterial inoculants and demonstrate the relevance of the effect of bacterial biosurfactants and plant root exudates on contaminant bioavailability, a key factor for enhancing diesel rhizodegradation. The association of lupine with D and PGP strains resulted in a promising combination for application in the rhizoremediation of soils with moderate diesel contamination., (Copyright © by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, Inc.)

Published
2016
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