J 2016

Cyto-histological and morpho-physiological responses of common duckweed (Lemna minor L.) to chromium

REALE, L., F. FERRANTI, S. MANTILACCI, M. CORBOLI, S. AVERSA et. al.

Basic information

Original name

Cyto-histological and morpho-physiological responses of common duckweed (Lemna minor L.) to chromium

Authors

REALE, L. (380 Italy), F. FERRANTI (380 Italy), S. MANTILACCI (380 Italy), M. CORBOLI (380 Italy), S. AVERSA (380 Italy), Flavia LANDUCCI (380 Italy, guarantor, belonging to the institution), C. BALDISSEROTTO (380 Italy), L. FERRONI (380 Italy), S. PANCALDI (380 Italy) and R. VENANZONI (380 Italy)

Edition

Chemosphere, OXFORD, Elsevier Science, 2016, 0045-6535

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 4.208

RIV identification code

RIV/00216224:14310/16:00089547

Organization unit

Faculty of Science

UT WoS

000369196300013

Keywords in English

Chromium; Growth inhibition test; Lemna minor; Photosystem II; Plastid; Starch

Tags

Změněno: 20/3/2018 13:13, Mgr. Lucie Jarošová, DiS.

Abstract

V originále

Along with cadmium, lead, mercury and other heavy metals, chromium is an important environmental pollutant, mainly concentrated in areas of intense anthropogenic pressure. The effect of potassium dichromate on Lemna minor populations was tested using the growth inhibition test. Cyto-histological and physiological analyses were also conducted to aid in understanding the strategies used by plants during exposure to chromium. Treatment with potassium dichromate caused a reduction in growth rate and frond size in all treated plants and especially at the highest concentrations. At these concentrations the photosynthetic pathway was also altered as shown by the decrease of maximum quantum yield of photosystem II and the chlorophyll b content and by the chloroplast ultrastructural modifications. Starch storage was also investigated by microscopic observations. It was the highest at the high concentrations of the pollutant The data suggested a correlation between starch storage and reduced growth; there was greater inhibition of plant growth than inhibition of photosynthesis, resulting in a surplus of carbohydrates that may be stored as starch. The investigation helps to understand the mechanism related to heavy metal tolerance of Lemna minor and supplies information about the behavior of this species widely used as a biomarker. (C) 2015 Elsevier Ltd. All rights reserved.