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.Základní údaje
Originální název
Cyto-histological and morpho-physiological responses of common duckweed (Lemna minor L.) to chromium
Autoři
REALE, L. (380 Itálie), F. FERRANTI (380 Itálie), S. MANTILACCI (380 Itálie), M. CORBOLI (380 Itálie), S. AVERSA (380 Itálie), Flavia LANDUCCI (380 Itálie, garant, domácí), C. BALDISSEROTTO (380 Itálie), L. FERRONI (380 Itálie), S. PANCALDI (380 Itálie) a R. VENANZONI (380 Itálie)
Vydání
Chemosphere, OXFORD, Elsevier Science, 2016, 0045-6535
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Velká Británie a Severní Irsko
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 4.208
Kód RIV
RIV/00216224:14310/16:00089547
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000369196300013
Klíčová slova anglicky
Chromium; Growth inhibition test; Lemna minor; Photosystem II; Plastid; Starch
Změněno: 20. 3. 2018 13:13, Mgr. Lucie Jarošová, DiS.
Anotace
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.