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Cadmium accumulation in sunflower plants influenced by arbuscular mycorrhiza.
Int J Phytoremediation. 2008 Jan-Feb; 10(1):1-13.IJ

Abstract

In order to investigate the cadmium (Cd) accumulation patterns and possible alleviation of Cd stress by mycorrhization, sunflower plants (Helianthus annuus L.) were grown in the presence or absence of Cd (20 micromol L(-1)) and inoculated or not inoculated with the arbuscular mycorrhizal fungus (AMF) Glomus intraradices. No visual symptoms of Cd phytotoxicity were observed; nevertheless, in non-mycorrhizal plants the presence of Cd decreased plant growth. The addition of Cd had no significant effect on either mycorrhizal colonization or the amount of extra-radical mycelia that was produced by the AMF. Cd accumulated mainly in roots; only 22% of the total Cd absorbed was translocated to the shoots, where it accumulated to an average of 228 mg Cd kg(-1). Although the shoot-to-root ratio of Cd was similar in both the AMF inoculated and non-inoculated plants, the total absorbed Cd was 23% higher in mycorrhizal plants. Cd concentration in AMF extra-radical mycelium was 728 microg g(-1) dry weight. Despite the greater absorption of Cd, mycorrhizal plants showed higher photosynthetic pigment concentrations and shoot P contents. Cd also influenced mineral nutrition, leading to decreased Ca and Cu shoot concentrations; N, Fe and Cu shoot contents; and increased S and K shoot concentrations. Cd induced guaiacol peroxidase activity in roots in both mycorrhizal and non-mycorrhizal plants, but this increase was much more accentuated in non-mycorrhizal roots. In conclusion, sunflower plants associated with G. intraradices were less sensitive to Cd stress than non-mycorrhizal plants. Mycorrhizal sunflowers showed enhanced Cd accumulation and some tolerance to excessive Cd concentrations in plant tissues.

Authors+Show Affiliations

Instituto Agronômico-IAC, Centro de Pesquisa e Desenvolvimento de Solos e Recursos Ambientais, Campinas, SP, Brazil.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

18709928

Citation

de Andrade, Sara Adrián López, et al. "Cadmium Accumulation in Sunflower Plants Influenced By Arbuscular Mycorrhiza." International Journal of Phytoremediation, vol. 10, no. 1, 2008, pp. 1-13.
de Andrade SA, da Silveira AP, Jorge RA, et al. Cadmium accumulation in sunflower plants influenced by arbuscular mycorrhiza. Int J Phytoremediation. 2008;10(1):1-13.
de Andrade, S. A., da Silveira, A. P., Jorge, R. A., & de Abreu, M. F. (2008). Cadmium accumulation in sunflower plants influenced by arbuscular mycorrhiza. International Journal of Phytoremediation, 10(1), 1-13. https://doi.org/10.1080/15226510701827002
de Andrade SA, et al. Cadmium Accumulation in Sunflower Plants Influenced By Arbuscular Mycorrhiza. Int J Phytoremediation. 2008 Jan-Feb;10(1):1-13. PubMed PMID: 18709928.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Cadmium accumulation in sunflower plants influenced by arbuscular mycorrhiza. AU - de Andrade,Sara Adrián López, AU - da Silveira,Adriana Parada Dias, AU - Jorge,Renato Atílio, AU - de Abreu,Mônica Ferreira, PY - 2008/8/20/pubmed PY - 2008/10/15/medline PY - 2008/8/20/entrez SP - 1 EP - 13 JF - International journal of phytoremediation JO - Int J Phytoremediation VL - 10 IS - 1 N2 - In order to investigate the cadmium (Cd) accumulation patterns and possible alleviation of Cd stress by mycorrhization, sunflower plants (Helianthus annuus L.) were grown in the presence or absence of Cd (20 micromol L(-1)) and inoculated or not inoculated with the arbuscular mycorrhizal fungus (AMF) Glomus intraradices. No visual symptoms of Cd phytotoxicity were observed; nevertheless, in non-mycorrhizal plants the presence of Cd decreased plant growth. The addition of Cd had no significant effect on either mycorrhizal colonization or the amount of extra-radical mycelia that was produced by the AMF. Cd accumulated mainly in roots; only 22% of the total Cd absorbed was translocated to the shoots, where it accumulated to an average of 228 mg Cd kg(-1). Although the shoot-to-root ratio of Cd was similar in both the AMF inoculated and non-inoculated plants, the total absorbed Cd was 23% higher in mycorrhizal plants. Cd concentration in AMF extra-radical mycelium was 728 microg g(-1) dry weight. Despite the greater absorption of Cd, mycorrhizal plants showed higher photosynthetic pigment concentrations and shoot P contents. Cd also influenced mineral nutrition, leading to decreased Ca and Cu shoot concentrations; N, Fe and Cu shoot contents; and increased S and K shoot concentrations. Cd induced guaiacol peroxidase activity in roots in both mycorrhizal and non-mycorrhizal plants, but this increase was much more accentuated in non-mycorrhizal roots. In conclusion, sunflower plants associated with G. intraradices were less sensitive to Cd stress than non-mycorrhizal plants. Mycorrhizal sunflowers showed enhanced Cd accumulation and some tolerance to excessive Cd concentrations in plant tissues. SN - 1522-6514 UR - https://www.unboundmedicine.com/medline/citation/18709928/Cadmium_accumulation_in_sunflower_plants_influenced_by_arbuscular_mycorrhiza_ DB - PRIME DP - Unbound Medicine ER -