Effects of nickel on the chloroplasts of the duckweeds Spirodela polyrhiza and Lemna minor and their possible use in biomonitoring and phytoremediation

Physiological, biochemical and molecular responses of common bean (Phaseolus vulgaris L.) plants to heavy metals stress

“…The decrease of chlorophylls contents as observed in this study showed high sensitivity to lead, nickel, zinc then cadmium, but low sensitivity to chromium. Chlorophyll b was less sensitive to heavy metal stress, but more sensitive to nickel (Table 2) and this agrees with the results of Appenroth et al (2010). Carotenoid contents were severely decreased by lead, but fairly affected by chromium.…”

Metal Uptake and Physiological Changes in Lemna gibba Exposed to Manganese and Nickel

“…The significant decrease in the pigment content at 16 mg/L Ni-treatment could be due to nutrient imbalances caused by excess Ni. The decrease in pigment content in plants exposed to excess Ni were demonstrated in Elodea canadensis (Maleva et al, 2009) and L. minor (Appenroth et al, 2010). Protein synthesis and breakdown were affected by toxic heavy metals in aquatic plants.…”

“…Mn and Ni accumulations by L. gibba after 24, 48 and 72 hours of exposure is presented in Figure 1 (Misra et al, 2006;Sivaci et al, 2007;Hou et al, 2007;Kara & Zeytunluoglu, 2007;Maleva et al, 2009;Appenroth et al, 2010;Rolli et al, 2010). In agreement with other results in the literature, L. gibba has an ability to accumulate Mn.…”

“…Excess Mn and Ni cause changes in the activities of antioxidant enzymes such as SOD (superoxide dismutase), catalase (CAT) and guaiacol peroxidase (POD) (Demirevska-Kepova et al, 2004;Maleva et al, 2009). Inhibition of photosynthesis by a decrease in pigment contents (chlorophyll a, chlorophyll b carotenoids) under excess Mn (Vicia faba, Pisum sativum, Hordeum vulgare) and Ni (L. gibba, Elodea canadensis, Spirodela polyrhiza) were determined in previous studies (Demirevska-Kepova et al, 2004;Zengin & Munzuroglu, 2005;Fagasova et al, 2006;Rezai & Farboodina, 2008;Maleva et al, 2009;Appenroth et al, 2010;Radic et al,. 2010;Arya & Roy, 2011).…”

Culturing duckweed in the field for starch accumulation

“…It has been used as feed for ducks and other animals (Culley and Epps, 1973;Leng et al, 1995;Skillicorn et al, 1993) for thousands of years due to its high protein content. Duckweed has also been used as a model plant for physiology research since the 1950s (Appenroth et al, 2010;Wangerman and Ashby, 1951) because of its rapid growth rate. Then this plant has played an important role in wastewater treatment (Kelly et al, 1978;Oron, 1990;Reinhold et al, 2010) and phytotoxicity test (Dekock and Innes, 1970;Radic et al, 2011;Wang, 1986) since the 1970s.…”