Atriplex atacamensis and Atriplex halimus resist As contamination in Pre-Andean soils (northern Chile)

Tapia, Yasna; Espinoza, Óscar; Pizarro, Carmen; Segura, Rodrigo; Vines, Marcela; Zúñiga, Gustavo E.; Moreno-Jiménez, Eduardo

doi:10.1016/j.scitotenv.2013.02.021

Cited by 40 publications

(24 citation statements)

References 43 publications

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“…Atriplex atacamensis thus appears able to accumulate a moderate amount of As, though it should not be regarded as a hyperaccumulating plant species and As concentration in the leaves remained 25 fold lower than in the soil. The recorded As concentration in leaves and stems of A. atacamensis in Quillagua were however higher than the values reported by Tapia et al [17] for the same species growing on another chilian As-contaminated are of ChiuChiu. It has to be mentioned that Quillagua is more contaminated tan ChiuChiu and that we harvested samples from mature plants exposed since a long time to As contamination while Tapia et al [17] performed pot experiments with young plants exposed for only 90 days to As pollution.…”

Section: Plant Analysiscontrasting

confidence: 73%

“…The recorded As concentration in leaves and stems of A. atacamensis in Quillagua were however higher than the values reported by Tapia et al [17] for the same species growing on another chilian As-contaminated are of ChiuChiu. It has to be mentioned that Quillagua is more contaminated tan ChiuChiu and that we harvested samples from mature plants exposed since a long time to As contamination while Tapia et al [17] performed pot experiments with young plants exposed for only 90 days to As pollution. In the close-related species Atriplex halimus growing on a site contaminated with 300 mg Kg -1 DW As, Rabier et al [33] did not detect significant As accumulation in the leaf since the resulting As concentration remained below the detection level.…”

Section: Plant Analysiscontrasting

confidence: 73%

“…The use of Atriplex species has also been recommended in heavymetal polluted environments [15,16]. Some studies about Atriplex atacamensis in a controlled environment have already suggested that A. atacamensis copes well with arsenic toxicity, but only few studies were devoted to A. atacamensis behavior in its natural environment [3,17]. The possibility to use this species as a bioindicator of As pollution and/ or as a promising material for phytoremediation purposes requires to analyze the ability of the plant to accumulate As in its natural environment, to determine As distribution in the different plant parts, and to analyze the relationship between As content in the plant and As content and bioavailability in the soil.…”

Section: Introductionmentioning

confidence: 99%

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Arsenic Distribution in Shoots of the Halophyte Plant Species Atriplex atacamensis Growing in an Extreme Arid Mining Area from Northern Chile

Vromman¹,

Paternostre²

2016

J Bioremediat Biodegrad

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The oasis of Quillagua is an As contaminated area located in the North part of Chile along the Rio Loa. This study was undertaken in order to quantify As accumulation in water, soil and plants of the xerohalophyte species Atriplex atacamensis growing along the river. The water samples from the Rio Loa contained up to 2.5 mg L -1 arsenic and were highly saline (EC 14.1 mS cm -1). High concentration of B was associated to near-neutral pH values. The soil was typically corase -textured with a high proportion of sand. A mean As concentration of 220 mg Kg -1 was recorded in the soil and an important proportion was associated to iron oxide. Mature plants of Atriplex atacamensis were able to grow on this contaminated area and accumulated moderate amounts of As in the shoots. Arsenic concentration was higher in the leaves tan in the stems, but consistent amounts of As accumulated in the mature seeds and in surrounding bracts. The vegetative plant organs also accumulated high amounts of Na, confirming the halophytic nature of the plant species. Mature shoots are characterized by low amounts of P, probably as a consequence of As competition for P transporters, and by high amounts of S, probably resulting from phytochelatins and glutathione over synthesis.

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Section: Plant Analysiscontrasting

confidence: 73%

Section: Plant Analysiscontrasting

confidence: 73%

Section: Introductionmentioning

confidence: 99%

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Arsenic Distribution in Shoots of the Halophyte Plant Species Atriplex atacamensis Growing in an Extreme Arid Mining Area from Northern Chile

Vromman¹,

Paternostre²

2016

J Bioremediat Biodegrad

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“…Atriplex halimus has a high tolerance of elevated external and internal Zn concentrations, which may result from co-precipitation with oxalate . Tapia et al (2013) demonstrated that A. halimus is able to cope with high tissue levels of As (up to 5.5 μg g -1 fresh leaf) and that it may be suitable for phytomanagement of As-contaminated areas.…”

Section: Trace Elementsmentioning

confidence: 99%

The tolerance of Atriplex halimus L. to environmental stresses

Walker¹,

Lutts²

2014

Emir. J. Food Agric

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Atriplex halimus L. (Amaranthaceae) (Mediterranean Saltbush) is a perennial, halophytic shrub that possesses the C4 photosynthetic anatomy and physiology. It grows under semi-arid and arid conditions (annual rainfall < 600 mm) from Macaronesia, through the Mediterranean basin countries and into western Asia, being particularly common on saline and degraded soils. Many studies have shed light on the physiological and biochemical mechanisms that, together with the morphological and anatomical features of this species, contribute to its notable tolerance of important abiotic stresses: salinity, drought, extreme temperatures and soil contamination by trace elements. These will be discussed here, highlighting their shared and distinct features. Certain processes are common to two or more stress responses: for example, vacuolar accumulation of sodium and the cytoplasmic accumulation of compatible osmolytes -part of the process of osmotic adjustment -are vital components of the adaptation to drought, salinity and cold. Others, such as oxalate accumulation upon trace elements exposure, seem to be stress-specific, while leaf surface vesiculated hairs (trichomes) and abscisic acid have distinct functions according to the stress. The relevance of these mechanisms to the use of A. halimus in soil remediation and as livestock forage is discussed.

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“…There are many studies related with plant tolerance to As under hydroponic conditions [10]- [13], whereas there are only a few studies performed in As-contaminated soils (without artificially spiking with As) [14].…”

Section: Introductionmentioning

confidence: 99%

<i>Lupinus microcarpus</i> Growing in Arsenic—Agricultural Soils from Chile: Toxic Effects and It Potential Use as Phytoremediator Plant

Espinoza¹,

Tapia²,

Pastene³

et al. 2016

JEP

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Arsenic (As) is the most important contaminant of the environment in northern Chile. The purpose of the present work is to study As-toxicity symptoms on Lupino microcarpus (lupine), an annual legume plant that constitutes part of the desert community of the pre-Andean area of the Antofagasta Region, Chile. This plant species is cultivated in As-agricultural soil collected from Chiu Chiu (northern Chile) which is classified as arid soils. Control soil (0 -20 cm depth) is collected from an area located in the central zone of Chile, which is classified as molli soil. The main physic-chemical characteristics of As-soil and the control soil are determined. Eighteen plastic pots of 1.6 L (fifteen for experimental and three for control) are filled with As-soil and control soil treatments. Two plants are cultivated in each pot and then separated leaves and roots for As-analysis. Visual As-toxicity symptoms such as foliar chlorosis, necrosis of the leaf tips and margins, leaf wilting and stunted are determined. Total As concentrations in soils where lupine is cultivated, reach levels between 5.3 -14. O. P. Díaz et al. 117As-agricultural soils. Neither control lupin plant suffers any toxicity symptoms. The results indicate that lupine plants do not resist contamination and accumulated higher levels of As in roots. Lupine can be used in the phytostabilisation of As immobilizing it by microbial activity in agricultural soil.

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Atriplex atacamensis and Atriplex halimus resist As contamination in Pre-Andean soils (northern Chile)

Cited by 40 publications

References 43 publications

Arsenic Distribution in Shoots of the Halophyte Plant Species Atriplex atacamensis Growing in an Extreme Arid Mining Area from Northern Chile

Arsenic Distribution in Shoots of the Halophyte Plant Species Atriplex atacamensis Growing in an Extreme Arid Mining Area from Northern Chile

The tolerance of Atriplex halimus L. to environmental stresses

<i>Lupinus microcarpus</i> Growing in Arsenic—Agricultural Soils from Chile: Toxic Effects and It Potential Use as Phytoremediator Plant

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Atriplex atacamensis and Atriplex halimus resist As contamination in Pre-Andean soils (northern Chile)

Cited by 40 publications

References 43 publications

Arsenic Distribution in Shoots of the Halophyte Plant Species Atriplex atacamensis Growing in an Extreme Arid Mining Area from Northern Chile

Arsenic Distribution in Shoots of the Halophyte Plant Species Atriplex atacamensis Growing in an Extreme Arid Mining Area from Northern Chile

The tolerance of Atriplex halimus L. to environmental stresses

&lt;i&gt;Lupinus microcarpus&lt;/i&gt; Growing in Arsenic—Agricultural Soils from Chile: Toxic Effects and It Potential Use as Phytoremediator Plant

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<i>Lupinus microcarpus</i> Growing in Arsenic—Agricultural Soils from Chile: Toxic Effects and It Potential Use as Phytoremediator Plant