Copper- and iron-induced injuries in roots and rhizomes of reed (Phragmites australis)

Fürtig, Konrad; Pavelic, Danijela; Brunold, Christian; Brändle, Roland (1999). Copper- and iron-induced injuries in roots and rhizomes of reed (Phragmites australis). Limnologica - Ecology and Management of Inland Waters, 29(1), pp. 60-63. Urban & Fischer Verlag 10.1016/S0075-9511(99)80039-5

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About 1 mg/g dw Cu2+ and 8 mg/g dw Fe2+ were found in roots of reed plants when fed with heavy metal concentrations of 100 μM Cu2+ and 10 mM Fe2+ under hypoxia. Roots seemed to act as a kind of filter since the amounts in rhizomes were only 0.06 mg Cu2+/g dw and 2 mg Fe2+/g dw. Increased contents of both ions reduced posthypoxic respiration capacity by 40–50% and also the sum of adenylates (ATP, ADP, AMP) by the same order of magnitude, although energy charge values remained above 0.85 in Cu2+ and 0.79 in Fe2+ treatments. Energy metabolism of rhizomes was not affected. Copper and iron contents of roots as well as of rhizomes were high enough to induce oxidative stress when roots were fed with 40 μM Cu2+ and 1 mM Fe2+, respectively. From our results we conclude that increased, but environmentally attainable, amounts of copper and reduced iron ions disturb root energy metabolism, and therefore root functioning and development. Latent injuries, based on oxidative stress, may be harmful for roots and rhizomes under long term exposure.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Stress Physiology (discontinued)
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS) > Anoxia / Postanoxia (discontinued)
08 Faculty of Science > Department of Biology > Institute of Plant Sciences (IPS)

UniBE Contributor:

Brunold, Christian and Brändle, Roland

Subjects:

500 Science > 580 Plants (Botany)

ISSN:

0075-9511

Publisher:

Urban & Fischer Verlag

Language:

English

Submitter:

Peter Alfred von Ballmoos-Haas

Date Deposited:

18 Jul 2018 13:45

Last Modified:

24 Oct 2019 19:27

Publisher DOI:

10.1016/S0075-9511(99)80039-5

Uncontrolled Keywords:

Phragmites australis; adenylatesadenylate; energy charge; hypoxialipid; peroxidation; malondialdehyde; posthypoxic respiration capacity

BORIS DOI:

10.7892/boris.118344

URI:

https://boris.unibe.ch/id/eprint/118344

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