Mercury uptake, distribution and DNA affinity in durum wheat (Triticum durum Desf.) plants

Cavallini, Andrea; Natali, Lucia; Durante, M.; Maserti, Biancaelena

doi:10.1016/s0048-9697(99)00367-8

Cited by 102 publications

(69 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Besides organ par ti tion ing, the sub cel lu lar dis tri bu tion of heavy metal ions within a cer tain organ is also a crit i cal fac tor in tol erance; in fact intra cel lu lar free mer cury (or metal) ions are reported to be much more toxic than com plexed mer cury (Cav al lin i et al, 1999). The knowl edge about the metal par ti tion ing through cytosol and cell walls can not only pro vide infor ma tion on the degree of tox ic ity the plant is expe ri enc ing, besides allow ing to spec u late about the metal tol er ance mech a nisms that plants use to cope with long-term mer cury expo sures.…”

Section: Discussionmentioning

confidence: 99%

Mercury intracellular partitioning and chelation in a salt marsh plant, Halimione portulacoides (L.) Aellen: Strategies underlying tolerance in environmental exposure

et al. 2009

View full text Add to dashboard Cite

In the pres ence of metal stress, plants can resort to a series of tol er ance mech a nisms. There fore field studies should be under taken in order to eval u ate the real role of these mech a nisms in stress cop ing. The aim of this paper was to clar ify the bio chem i cal pro cesses behind mer cury tol er ance in Ha lim i one por tu la co ides (L.) Ael len (Caryo phyll ales: Cheno po di a ceae) col lected in a mer cury con tam i nated salt marsh. Dif fer ent frac tions of mer cury were sep a rated: buffer-sol u ble (mainly cyto solic) and insol u ble mer cury (mainly asso ci ated with mem branes and cell walls). The amounts in each frac tion of metal were com pared and related to metal dis tribu tion within plant organs. Pro tein-mer cury com plexes were iso lated and ana lysed for their thiol con tent in order to assess wether the tol er ance of this salt marsh plant was asso ci ated with the induc tion of metal che lation by phy to chel a tins. Over all, the mer cury tol er ance strat e gies of the plant are likely to involve root cell wall immo bi li za tion as a major mech a nism of metal resis tance, rather than metal che la tion in the cyto solic fraction. Nev er the less, phy to chel a tins were dem on strated to che late mer cury under envi ron men tal expo sure.

show abstract

Section: Discussionmentioning

confidence: 99%

Mercury intracellular partitioning and chelation in a salt marsh plant, Halimione portulacoides (L.) Aellen: Strategies underlying tolerance in environmental exposure

et al. 2009

View full text Add to dashboard Cite

show abstract

“…Uptake of Hg from the air via the stomata of untreated plants is a possible reason for the relatively high Hg concentrations in these plants in comparison to plants growing in a medium without Hg (Suckcharoen, 1978;Gö thberg et al, 2002). Uptake of gaseous Hg via the stomata has been shown in laboratory studies (Browne and Fang, 1978;Du and Fang, 1983;Cavallini et al, 1999). Although the accumulation of Hg in aerial plant parts increased in direct proportion to Hg concentration in the culture medium, it was quite stable for higher concentrations.…”

Section: Hg Accumulationmentioning

confidence: 98%

“…Many studies have shown that plant roots accumulate Hg when they are exposed to Hg-contaminated soils (Lenka et al, 1992;Coquery and Welbourn, 1994;Bersenyi et al, 1999;Kalac and Svoboda, 2000). Laboratory studies have shown that plant roots absorb Hg from solution and that roots accumulate a much greater amount of Hg than do shoots (Cavallini et al, 1999).…”

mentioning

confidence: 99%

Detection and Quantification of Unbound Phytochelatin 2 in Plant Extracts of Brassica napus Grown with Different Levels of Mercury

et al. 2006

View full text Add to dashboard Cite

The mercury (Hg) accumulation mechanism was studied in rape (Brassica napus) plants grown under a Hg concentration gradient (0 mM-1,000 mM). Hg mainly accumulated in roots. Therefore, the presence of phytochelatins (PCs) was studied in the roots of the plants. The high stability of the PC-Hg multicomplexes (mPC-nHg) seems to be the main reason for the lack of previous Hg-PC characterization studies. We propose a modification of the method to detect and quantify unbound PC of Hg in plant extracts via high-performance liquid chromatography coupled to electrospray tandem mass spectrometry and inductively coupled plasma mass spectrometry in parallel. We separated the PC from the Hg by adding the chelating agent sodium 2,3-dimercaptopropanesulfonate monohydrate. We only detected the presence of PC after the addition of the chelating agent. Some multicomplexes mPC-nHg could be formed but, due to their large sizes, could not be detected. In this study, only PC 2 was observed in plant samples. Hg accumulation was correlated with PC 2 concentration (r 2 5 0.98).

show abstract

“…Limited uptake of Hg has been shown in mosses, lichens, fungi and in wetland, woody and crop plants (Patra and Sharma, 2000). Other studies on the phytoremediation of mercury in contaminated soils have been reported using different plant species such as Atriplex canescens (saltbush ) (Patra and Sharma, 2000), Rumex induratus and Marrubium vulgare (common horehound) (MorenoJiménez et al, 2006), white lupin (Ximenez-Embun et al, 2001), Tritcum aestivum (wheat) (Cavallini et al, 1999), Pisum sativum (pea) (Beauford et al, 1977;Godbold and Huttermann, 1986), Sorghum bicolor (sorghum) (Patra and Sharma, 2000), Chrysopogon zizanioides (vetiver grass) (Wong, 2003), Azolla caroliniana (an aquatic fern) (Bennicelli et al, 2004), and Oryza sativa (rice) (Du et al, 2005). Few studies however, have been carried out on biosolids phytoremediation and Hg was found mainly in the roots of the nine plant species tested with very low translocation to the shoot (Lomonte et al, 2010a).…”

Section: Introductionmentioning

confidence: 99%

Growth of selected plant species in biosolids-amended mine tailings

Alcantara

Doronila

Nicolas

et al. 2015

Minerals Engineering

View full text Add to dashboard Cite

Each plant species exhibited differential responses in terms of germination, seedling quality, leaf area, specific leaf area, root and shoot biomass, and percentage dry matter partitioning to the roots. Both the Indian mustard and carrot grew successfully in the biosolidsmine tailings substrate combinations while white lupin, sugar beet, cassava, and potato failed to grow in most of the substrate combinations. The most suitable biosolids-mine tailings combination was determined to be 75% biosolids -25% mine tailings, wherein most of the abovementioned growth parameters did not differ significantly from those of the plants grown in the control potting mix.

show abstract

Mercury uptake, distribution and DNA affinity in durum wheat (Triticum durum Desf.) plants

Cited by 102 publications

References 24 publications

Mercury intracellular partitioning and chelation in a salt marsh plant, Halimione portulacoides (L.) Aellen: Strategies underlying tolerance in environmental exposure

Mercury intracellular partitioning and chelation in a salt marsh plant, Halimione portulacoides (L.) Aellen: Strategies underlying tolerance in environmental exposure

Detection and Quantification of Unbound Phytochelatin 2 in Plant Extracts of Brassica napus Grown with Different Levels of Mercury

Growth of selected plant species in biosolids-amended mine tailings

Contact Info

Product

Resources

About