Pretražite po imenu i prezimenu autora, mentora, urednika, prevoditelja

Napredna pretraga

Pregled bibliografske jedinice broj: 1068030

Physiological and morphological response of marine diatom Cylindrotheca closterium (Bacillariophyceae) exposed to cadmium


Mišić Radić, Tea; Čačković, Andrea; Penezić, Abra; Dautović, Jelena; Lončar, Jovica; Omanović, Dario Juraić, Krunoslav; Ljubešić, Zrinka
Physiological and morphological response of marine diatom Cylindrotheca closterium (Bacillariophyceae) exposed to cadmium // European journal of phycology, 56 (2020), 1758347, 13 doi:10.1080/09670262.2020.1758347 (međunarodna recenzija, članak, znanstveni)


Naslov
Physiological and morphological response of marine diatom Cylindrotheca closterium (Bacillariophyceae) exposed to cadmium

Autori
Mišić Radić, Tea ; Čačković, Andrea ; Penezić, Abra ; Dautović, Jelena ; Lončar, Jovica ; Omanović, Dario Juraić, Krunoslav ; Ljubešić, Zrinka

Izvornik
European journal of phycology (1469-4433) 56 (2020); 1758347, 13

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Atomic force microscopy (AFM) ; dissolved organic carbon (DOC) ; cadmium bioavailability ; Cylindrotheca closterium ; growthdynamics ; marine diatom ; morphological changes ; particulate organic carbon (POC)

Sažetak
The impact of the heavy metal cadmium on the lightly silicified marine diatomCylindrotheca closterium was studied with regard to growth dynamics, organic matter production and morphological characteristics.C. closterium cultures were able to sustain positive growth in the tested range of 0–1000μgCdl–1with a significant decrease in specific growth rate in the exponential growth phase at the highest tested Cd concentration. The concentrations of both dissolved (DOCcell) and particulate organic carbon per cell (POCcell)inC. closterium cultures exposed to 500 and 1000 μg l–1Cd more than doubled compared with the control culture. Enhanced organic matter production as a feedback response to Cd exposure may thus contribute to cell detoxification, supported by the electrochemical data showing that Cd was not significantly accumulated by or associated with diatom cells except for the culture exposed to 1000μgCdl–1. In order to gain more insight into the effects of cadmium on diatom morphological features, the cell surface ofC. closterium was characterized at the nanoscale on a single cell level using atomic force microscopy (AFM). Changes induced by Cd were observed as irregular patterns of silica spheres on more silicified parts of the cell, girdle band and around the raphe. These changes clearly show that beside the physiological response, C. closterium also showed a morphological response which is probably due to the interference of Cd with the diatom biosilification process. This study overall contributes to better understanding of the effects of cadmium on diatoms and shows that morphological characteristics assessed by AFM may be a valuable indicator for metal contamination.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija



POVEZANOST RADA


Projekt / tema
HRZZ-IP-2014-09-7530 - Novi metodološki pristupbiogeokemijskim istraživanjima specijacije metala u tragovima u obalnim vodenim ekosustavima (Dario Omanović, )
International Visegrad Fund (ID 21720055)

Ustanove
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb

Citiraj ovu publikaciju

Mišić Radić, Tea; Čačković, Andrea; Penezić, Abra; Dautović, Jelena; Lončar, Jovica; Omanović, Dario Juraić, Krunoslav; Ljubešić, Zrinka
Physiological and morphological response of marine diatom Cylindrotheca closterium (Bacillariophyceae) exposed to cadmium // European journal of phycology, 56 (2020), 1758347, 13 doi:10.1080/09670262.2020.1758347 (međunarodna recenzija, članak, znanstveni)
Mišić Radić, T., Čačković, A., Penezić, A., Dautović, J., Lončar, J., Omanović, Dario Juraić, Krunoslav & Ljubešić, Z. (2020) Physiological and morphological response of marine diatom Cylindrotheca closterium (Bacillariophyceae) exposed to cadmium. European journal of phycology, 56, 1758347, 13 doi:10.1080/09670262.2020.1758347.
@article{article, year = {2020}, pages = {13}, DOI = {10.1080/09670262.2020.1758347}, chapter = {1758347}, keywords = {Atomic force microscopy (AFM), dissolved organic carbon (DOC), cadmium bioavailability, Cylindrotheca closterium, growthdynamics, marine diatom, morphological changes, particulate organic carbon (POC)}, journal = {European journal of phycology}, doi = {10.1080/09670262.2020.1758347}, volume = {56}, issn = {1469-4433}, title = {Physiological and morphological response of marine diatom Cylindrotheca closterium (Bacillariophyceae) exposed to cadmium}, keyword = {Atomic force microscopy (AFM), dissolved organic carbon (DOC), cadmium bioavailability, Cylindrotheca closterium, growthdynamics, marine diatom, morphological changes, particulate organic carbon (POC)}, chapternumber = {1758347} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI


Citati