Comparative Ni tolerance and accumulation potentials between Mesembryanthemum crystallinum (halophyte) and Brassica juncea: Metal accumulation, nutrient status and photosynthetic activity.
Identifieur interne : 000076 ( Main/Exploration ); précédent : 000075; suivant : 000077Comparative Ni tolerance and accumulation potentials between Mesembryanthemum crystallinum (halophyte) and Brassica juncea: Metal accumulation, nutrient status and photosynthetic activity.
Auteurs : Taoufik Amari [Tunisie] ; Tahar Ghnaya [Tunisie] ; Ahmed Debez [Tunisie] ; Manel Taamali [Tunisie] ; Nabil Ben Youssef [Tunisie] ; Giorgio Lucchini [Italie] ; Gian Attilio Sacchi [Italie] ; Chedly Abdelly [Tunisie]Source :
- Journal of plant physiology [ 1618-1328 ] ; 2014.
English descriptors
- KwdEn :
- MESH :
- chemical , metabolism : Chlorophyll, Metals, Nickel.
- metabolism : Mesembryanthemum, Mustard Plant, Plant Roots, Plant Shoots.
- Biodegradation, Environmental, Photosynthesis, Plant Transpiration, Salt-Tolerant Plants, Soil Pollutants.
Abstract
Saline soils often constitute sites of accumulation of industrial and urban wastes contaminated by heavy metals. Halophytes, i.e. native salt-tolerant species, could be more suitable for heavy metal phytoextraction from saline areas than glycophytes, most frequently used so far. In the framework of this approach, we assess here the Ni phytoextraction potential in the halophyte Mesembryanthemum crystallinum compared with the model species Brassica juncea. Plants were hydroponically maintained for 21 days at 0, 25, 50, and 100μM NiCl2. Nickel addition significantly restricted the growth activity of both species, and to a higher extent in M. crystallinum, which did not, however, show Ni-related toxicity symptoms on leaves. Interestingly, photosynthesis activity, chlorophyll content and photosystem II integrity assessed by chlorophyll fluorescence were less impacted in Ni-treated M. crystallinum as compared to B. juncea. The plant mineral nutrition was differently affected by NiCl2 exposure depending on the element, the species investigated and even the organ. In both species, roots were the preferential sites of Ni(2+) accumulation, but the fraction translocated to shoots was higher in B. juncea than in M. crystallinum. The relatively good tolerance of M. crystallinum to Ni suggests that this halophyte species could be used in the phytoextraction of moderately polluted saline soils.
DOI: 10.1016/j.jplph.2014.06.020
PubMed: 25171515
Affiliations:
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Le document en format XML
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and Brassica juncea: Metal accumulation, nutrient status and photosynthetic activity.</title><author><name sortKey="Amari, Taoufik" sort="Amari, Taoufik" uniqKey="Amari T" first="Taoufik" last="Amari">Taoufik Amari</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif, Tunisia.</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif</wicri:regionArea><wicri:noRegion>2050 Hammam-lif</wicri:noRegion></affiliation></author><author><name sortKey="Ghnaya, Tahar" sort="Ghnaya, Tahar" uniqKey="Ghnaya T" first="Tahar" last="Ghnaya">Tahar Ghnaya</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif, Tunisia. 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Taamali</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif, Tunisia.</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif</wicri:regionArea><wicri:noRegion>2050 Hammam-lif</wicri:noRegion></affiliation></author><author><name sortKey="Ben Youssef, Nabil" sort="Ben Youssef, Nabil" uniqKey="Ben Youssef N" first="Nabil" last="Ben Youssef">Nabil Ben Youssef</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif, Tunisia.</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif</wicri:regionArea><wicri:noRegion>2050 Hammam-lif</wicri:noRegion></affiliation></author><author><name sortKey="Lucchini, Giorgio" sort="Lucchini, Giorgio" uniqKey="Lucchini G" first="Giorgio" last="Lucchini">Giorgio Lucchini</name><affiliation wicri:level="1"><nlm:affiliation>Department of Agricultural and Environmental Sciences, Università degli Studi di Milano, 20133 Milan, Italy.</nlm:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>Department of Agricultural and Environmental Sciences, Università degli Studi di Milano, 20133 Milan</wicri:regionArea><placeName><settlement type="city">Milan</settlement><region nuts="2">Lombardie</region></placeName></affiliation></author><author><name sortKey="Sacchi, Gian Attilio" sort="Sacchi, Gian Attilio" uniqKey="Sacchi G" first="Gian Attilio" last="Sacchi">Gian Attilio Sacchi</name><affiliation wicri:level="1"><nlm:affiliation>Department of Agricultural and Environmental Sciences, Università degli Studi di Milano, 20133 Milan, Italy.</nlm:affiliation><country xml:lang="fr">Italie</country><wicri:regionArea>Department of Agricultural and Environmental Sciences, Università degli Studi di Milano, 20133 Milan</wicri:regionArea><placeName><settlement type="city">Milan</settlement><region nuts="2">Lombardie</region></placeName></affiliation></author><author><name sortKey="Abdelly, Chedly" sort="Abdelly, Chedly" uniqKey="Abdelly C" first="Chedly" last="Abdelly">Chedly Abdelly</name><affiliation wicri:level="1"><nlm:affiliation>Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif, Tunisia.</nlm:affiliation><country xml:lang="fr">Tunisie</country><wicri:regionArea>Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj-Cédria, BP 901, 2050 Hammam-lif</wicri:regionArea><wicri:noRegion>2050 Hammam-lif</wicri:noRegion></affiliation></author></analytic><series><title level="j">Journal of plant physiology</title><idno type="eISSN">1618-1328</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Biodegradation, Environmental</term><term>Chlorophyll (metabolism)</term><term>Mesembryanthemum (metabolism)</term><term>Metals (metabolism)</term><term>Mustard Plant (metabolism)</term><term>Nickel (metabolism)</term><term>Photosynthesis</term><term>Plant Roots (metabolism)</term><term>Plant Shoots (metabolism)</term><term>Plant Transpiration</term><term>Salt-Tolerant Plants</term><term>Soil Pollutants</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Chlorophyll</term><term>Metals</term><term>Nickel</term></keywords><keywords scheme="MESH" qualifier="metabolism" xml:lang="en"><term>Mesembryanthemum</term><term>Mustard Plant</term><term>Plant Roots</term><term>Plant Shoots</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Biodegradation, Environmental</term><term>Photosynthesis</term><term>Plant Transpiration</term><term>Salt-Tolerant Plants</term><term>Soil Pollutants</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Saline soils often constitute sites of accumulation of industrial and urban wastes contaminated by heavy metals. Halophytes, i.e. native salt-tolerant species, could be more suitable for heavy metal phytoextraction from saline areas than glycophytes, most frequently used so far. In the framework of this approach, we assess here the Ni phytoextraction potential in the halophyte Mesembryanthemum crystallinum compared with the model species Brassica juncea. Plants were hydroponically maintained for 21 days at 0, 25, 50, and 100μM NiCl2. Nickel addition significantly restricted the growth activity of both species, and to a higher extent in M. crystallinum, which did not, however, show Ni-related toxicity symptoms on leaves. Interestingly, photosynthesis activity, chlorophyll content and photosystem II integrity assessed by chlorophyll fluorescence were less impacted in Ni-treated M. crystallinum as compared to B. juncea. The plant mineral nutrition was differently affected by NiCl2 exposure depending on the element, the species investigated and even the organ. In both species, roots were the preferential sites of Ni(2+) accumulation, but the fraction translocated to shoots was higher in B. juncea than in M. crystallinum. The relatively good tolerance of M. crystallinum to Ni suggests that this halophyte species could be used in the phytoextraction of moderately polluted saline soils.</div></front></TEI><affiliations><list><country><li>Italie</li><li>Tunisie</li></country><region><li>Lombardie</li></region><settlement><li>Milan</li></settlement></list><tree><country name="Tunisie"><noRegion><name sortKey="Amari, Taoufik" sort="Amari, Taoufik" uniqKey="Amari T" first="Taoufik" last="Amari">Taoufik Amari</name></noRegion><name sortKey="Abdelly, Chedly" sort="Abdelly, Chedly" uniqKey="Abdelly C" first="Chedly" last="Abdelly">Chedly Abdelly</name><name sortKey="Ben Youssef, Nabil" sort="Ben Youssef, Nabil" uniqKey="Ben Youssef N" first="Nabil" last="Ben Youssef">Nabil Ben Youssef</name><name sortKey="Debez, Ahmed" sort="Debez, Ahmed" uniqKey="Debez A" first="Ahmed" last="Debez">Ahmed Debez</name><name sortKey="Ghnaya, Tahar" sort="Ghnaya, Tahar" uniqKey="Ghnaya T" first="Tahar" last="Ghnaya">Tahar Ghnaya</name><name sortKey="Taamali, Manel" sort="Taamali, Manel" uniqKey="Taamali M" first="Manel" last="Taamali">Manel Taamali</name></country><country name="Italie"><region name="Lombardie"><name sortKey="Lucchini, Giorgio" sort="Lucchini, Giorgio" uniqKey="Lucchini G" first="Giorgio" last="Lucchini">Giorgio Lucchini</name></region><name sortKey="Sacchi, Gian Attilio" sort="Sacchi, Gian Attilio" uniqKey="Sacchi G" first="Gian Attilio" last="Sacchi">Gian Attilio Sacchi</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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