Proline Accumulation Under Heavy Metal Stress

Alia,; Saradhi, P. Pardha

doi:10.1016/s0176-1617(11)80240-3

Cited by 279 publications

(60 citation statements)

References 26 publications

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“…Although its role in plant osmotolerance remains controversial, proline is thought to contribute to osmotic adjustment, detoxification of reactive oxygen species and protection of membrane integrity. Excess metal induced the decrease in intracellular proline content in the study, suggesting osmosis of membranes was affected by stress caused by excess iron and copper, which agreed with the reports on other plants (Alia and Pardha, 1991;Bassi and Sharma, 1993;Sinha and Saxena, 2006;Sinha et al, 2009). …”

Section: Discussionsupporting

confidence: 91%

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

Xing

Huang

Liu

2009

Environmental Toxicology

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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.

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Section: Discussionsupporting

confidence: 91%

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

Xing

Huang

Liu

2009

Environmental Toxicology

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“…Among amino acids, proline responds most sensitively to stress conditions (Nover et al 1989). Proline accumulation is accepted as an indicator of environmental stress including metal contamination (Alia and Saradhi 1991) (Table 6) was also noticed in all the plants, of which Eclipta sp. exhibited the highest proline accumulation (60.78%).…”

Section: Metal Concentration In Bottom Sediments Of Effluent Channelmentioning

confidence: 94%

Effects of metal stress on biochemical response of some aquatic macrophytes growing along an industrial waste discharge channel

Nayek

Gupta

Saha

2010

Journal of Plant Interactions

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The present research work focused on the metal translocation in the soil-plant system and subsequent metal stress on biochemical response of aquatic macrophytes growing along an industrial waste discharge channel. The bottom sediment of the effluent channel is highly contaminated with metals. High transfer factor (TF) for most of the metals indicated higher metal uptake by aquatic macrophytes of which Typha sp. was found to be the most suitable. Average TF was in the order of Fe (4.82) Mn (3.91)Cu (3.59)Cd (2.29)Zn (2.22) Cr (1.83) Pb (1.80). Hyper accumulation of metals within plants resulted in significant reductions in total chlorophyll, soluble sugar with an increase in protein and proline content. The investigation also demonstrated that exposure to high concentrations on metals resulted in enhanced activity of catalase (61.82Á90.91%) and peroxidase (37.08Á 70.23%) in all examined macrophytes with a reduced (27.58Á43.4%) or unchanged ascorbate peroxidase activity depending on plant species.

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“…Therefore, it seemed rather difficult to compare the magnitude of accumulation of free Pro in our chamomile plants with the values reported by other authors, particularly with regard to diversity of experimental conditions, plant species, type of heavy metals and their concentrations (e.g. Alia and Pardha Saradhi 1991, Bassi and Sharma 1993, Schat et al 1997.…”

Section: Content Of Free Prolinementioning

confidence: 77%

Lead uptake by Matricaria chamomilla L.

Grejtovský¹,

Markušová²,

Nováková³

2008

PLANT SOIL ENVIRON

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Investigations were carried out under laboratory conditions in a nutrient solution according to Knop to observe the influence of increasing concentrations of Pb (5, 25, 50, 75 µmol/l) on its uptake and accumulation in chamomile (Matricaria chamomilla L.), diploid cv. Novbona. The essential part of Pb taken up by chamomile plants accumulated in roots; only minor portion of the metal was translocated to the above-ground part of the plant. Addition of Pb to the growth medium reduced significantly the root biomass (-46.3% at the highest supply of Pb); reduction in the above-ground dry matter (-18.3%) was insignificant. Pb treatment also reduced chlorophyll content in leaves (P < 0.01). The highest level of Pb resulted in a decrease of Chl a by 52% and of Chl b by 48%. Lead in the nutrient medium induced accumulation of free proline (Pro) in leaf rosette tissues (P < 0.01). Distribution of Pb in chamomile plants (cv. Novbona) and accumulation of Pb with focus on accumulation in inflorescences (drug Flos chamomillae) was investigated in a pot experiment with soil (Orthic Luvisol) supplemented with 50 mg Pb/kg dry soil. At this treatment, the content of Pb in chamomile inflorescences was 3-fold higher in comparison with the control (P < 0.05) but the level of accumulated Pb (2.08 mg Pb/kg dm flowers) was far below the limit (10 mg/kg) set by the WHO as the highest acceptable level of Pb in the chamomile drug.

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Proline Accumulation Under Heavy Metal Stress

Cited by 279 publications

References 26 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

Effects of metal stress on biochemical response of some aquatic macrophytes growing along an industrial waste discharge channel

Lead uptake by Matricaria chamomilla L.

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