Ecophysiological responses of Jussiaea rapens to cadmium exposure

Li, Ming; Zhang, Li Jing; Tao, Ling; Li, Wei

doi:10.1016/j.aquabot.2008.01.002

Cited by 60 publications

(23 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, copper had significant negative correlations with Chl a (r 5 0.9364, P \ 0.05), carotenoid (r 5 0.9780, P \ 0.05) and Chl a/Carotenoid (r 5 0.9783, P \ 0.05), indicating Chl a is more sensitive to adversity stress than Chl b under metal stress. The result was completely contrary to previous studies (Ding et al, 2007;Li et al, 2008). Furthermore, excess iron and copper induced oxidative stress in chloroplasts (Prasad and Strzalka, 1999).…”

Section: Discussioncontrasting

confidence: 99%

“…The reduced photosynthetic activity is an effect commonly noticed in plants exposed to heavy metal (Frankart et al, 2002;Hanikenne, 2003;Hou et al, 2007;Hu et al, 2007;Küpper et al, 2007;Li et al, 2008). In our experiment, significant correlation was obtained between Fv/Fm and excess iron and copper (r 5 20.9742, r 5 20.9790, P \ 0.05), suggesting ROS caused by excess metal concentration damaged photosynthetic apparatuses severely.…”

Section: Discussionsupporting

confidence: 61%

See 1 more Smart Citation

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Xing

Huang

Liu

2009

Environmental Toxicology

View full text Add to dashboard Cite

To elucidate effect of chemical reagents addition on growth of aquatic plants in restoration of aquatic ecosystem, Spirodela polyrrhiza (L.) Schleid was used to evaluate its physiological responses to excess iron (Fe 31 ) and copper (Cu 21 ) in the study. Results showed that accumulation of iron and copper both reached maximum at 100 mg L 21 iron or copper after 24 h short-term stress, but excess iron and copper caused plants necrosis or death and colonies disintegration as well as roots abscission at excess metal concentrations except for 1 mg L 21 iron. Significant differences in chlorophyll fluorescence (Fv/Fm) were observed at 1-100 mg L 21 iron or copper. The synthesis of chlorophyll and protein as well as carbohydrate and the uptake of phosphate and nitrogen were inhibited seriously by excess iron and copper. Proline content decreased with increasing iron or copper concentration, however, MDA content increased with increasing iron or copper concentration. # 2009 Wiley Periodicals, Inc. Environ Toxicol 25: 103-112, 2010.

show abstract

Section: Discussioncontrasting

confidence: 99%

Section: Discussionsupporting

confidence: 61%

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Xing

Huang

Liu

2009

Environmental Toxicology

View full text Add to dashboard Cite

show abstract

“…Present study demonstrated significant loss of pigments occurred beyond 10 mg L À1 [Fe 3þ ]. Contrary to previous studies which have suggested that Chl a is more sensitive to adversity stress than Chl b [11,20], the highest ratio of Chl a/b at 1000 mg L…”

Section: Discussioncontrasting

confidence: 97%

“…Photosynthesis, an important process of metabolism for plant development, has been well used as a stress indicator. The reduced photosynthetic activity is an effect commonly noticed in plants exposed to heavy metal [14,17,20]. In our experiment, all chlorophyll fluorescence parameters reduced significantly at 1000 mg L…”

supporting

confidence: 58%

Antioxidative responses of Elodea nuttallii (Planch.) H. St. John to short-term iron exposure

Xing

Liu

2010

Plant Physiology and Biochemistry

View full text Add to dashboard Cite

“…Some aquatic plants accumulate metals and many species suffer phytotoxicity (Fritioff and Greger, 2006;Dhir et al, 2008;Li et al, 2008) while others easily grow in the presence of metals. An example is the hyperaccumulator Eichhornia crassipes (Mart.)…”

Section: Introductionmentioning

confidence: 99%

Ecophysiological adaptation and metal accumulation in water hyacinth from two tropical rivers

Vitória

Lage-Pinto

Campaneli

et al. 2010

Braz. J. Plant Physiol.

View full text Add to dashboard Cite

The ecophysiological adaptations of water hyacinth (metal hyperaccumulator) under adverse environmental conditions are not yet clearly elucidated. This work evaluated photosynthetic pigments and chlorophyll a fluorescence in water hyacinth plants sampled in different regions (upper, middle and lower) of Paraíba do Sul river (PSR) and Imbé river, Brazil. Additionally Mn, Fe, Zn, Cu, Cr, Pb and Ni were quantified on the shoots and roots. Roots were the preferential site of metal accumulation. Cromium was not detected in the shoots. Iron and Mn were the elements detected in higher concentrations in all samples. Zinc and Cu were detected in higher concentrations in roots of plants from middle and upper PSR, sites of higher anthropogenic activity. The highest concentrations of almost all metals were verified in plants from middle PSR. Regarding photosynthetic adaptations, plants from middle and upper PSR showed the highest concentrations of photosynthetic pigments, as well as the highest values of F v /F m and F v /F 0 . The photosynthetic performance of plants suggests that they are not under stress conditions, even in regions of higher anthropogenic activity. Positive correlation was observed among nonphotochemical quenching and carotenoids, suggesting dissipation of energy in the form of heat as an strategy to keep the stable photochemical photosynthesis functioning, confirmed by values of the F v /F m . It is possible that such adaptative strategy is efficient as a long term response to stress factors, once literature data suggest that this is not a preferential path for photosynthesis in stress circumstances under short time controlled conditions. Key-words: pollution, Paraíba do Sul river, energy dissipation, photosynthetic pigments, nonphotochemical quenchings. resuMoAs adaptações ecofisiológicas de aguapé (hiperacumuladora de metais) sob condições ambientais adversas ainda não estão totalmente elucidadas. Este trabalho avaliou pigmentos fotossintéticos e fluorescência da clorofila a em aguapé coletados em diferentes regiões (alto, médio e baixo) do rio Paraíba do Sul (RPS) e no rio Imbé, Brasil. Adicionalmente Mn, Fe, Zn, Cu, Pb e Ni foram quantificados na parte área e raízes. Ferro e Mn foram os elementos detectados em maiores concentrações em todas as amostras. Zinco e Cu foram detectados em maiores concentrações nas raízes de plantas do médio e alto RPS, locais de grande atividade antropogênica. As mais elevadas concentrações de quase todos os metais foram verificadas nas plantas do médio RPS. Com relação às adaptações fotossintéticas, plantas do médio e alto RPS mostraram as maiores concentrações de pigmentos fotossintéticos, assim como os mais elevados valores de F v /F m e F v /F 0 . As avaliações fotossintéticas destas plantas sugerem que elas não estejam sob condições de estresse, mesmo nas regiões de grande atividade antropogênica. Correlação positiva foi observada entre quenching não-fotoquímico e carotenóides, sugerindo que a dissipação de energia na forma de calor seja uma estratégia para ...

show abstract

Ecophysiological responses of Jussiaea rapens to cadmium exposure

Cited by 60 publications

References 42 publications

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Antioxidative responses of Elodea nuttallii (Planch.) H. St. John to short-term iron exposure

Ecophysiological adaptation and metal accumulation in water hyacinth from two tropical rivers

Contact Info

Product

Resources

About