TY - JOUR
T1 - Zinc accumulation in Solanum nigrum is enhanced by different arbuscular mycorrhizal fungi
AU - Marques, Ana P. G. C.
AU - Oliveira, Rui S.
AU - Rangel, António O. S. S.
AU - Castro, Paula M. L.
PY - 2006/11
Y1 - 2006/11
N2 - Solanum nigrum was found to proliferate in sediments with high levels of metal pollution. The effect of Zn on plant growth and tissue metal accumulation was assessed. The response of the plant to the inoculation with four different isolates of arbuscular mycorrhizal fungi (AMF) (Glomus sp. BEG140, Glomus claroideum, Glomus mosseae and Glomus intraradices) was studied. While the isolates of AMF did not have a significant (P < 0.05) influence on mycorrhizal colonisation, increasing Zn concentration to high levels (500 and 1000 mg kg-1) induced significant (P < 0.05) decrease of the AMF colonisation. In general, the presence of AMF did not affect the growth and biomass of S. nigrum individuals. However, the level of metal in the matrix affected S. nigrum growth; plants grown at 100 mg kg-1 had significantly (P < 0.05) lower leaf, stem, root and total biomass than control ones and plants growing at 500 and 1000 mg kg-1 had the significantly (P < 0.05) lowest biomass. Plants inoculated with the AMF G. claroideum and G. intraradices presented significantly (P < 0.05) higher Zn accumulation in all plant tissues. In general, the stem tissues had the higher Zn content while the leaves registered the lowest values, which indicate a high translocation of the metal. AMF inoculation had no significant (P < 0.05) influence on the metal translocation within the plant. This study suggests that inoculation with the AMF G. claroideum or G. intraradices, can enhance the Zn accumulation in the tissues of S. nigrum, not affecting the plant translocation capacities.
AB - Solanum nigrum was found to proliferate in sediments with high levels of metal pollution. The effect of Zn on plant growth and tissue metal accumulation was assessed. The response of the plant to the inoculation with four different isolates of arbuscular mycorrhizal fungi (AMF) (Glomus sp. BEG140, Glomus claroideum, Glomus mosseae and Glomus intraradices) was studied. While the isolates of AMF did not have a significant (P < 0.05) influence on mycorrhizal colonisation, increasing Zn concentration to high levels (500 and 1000 mg kg-1) induced significant (P < 0.05) decrease of the AMF colonisation. In general, the presence of AMF did not affect the growth and biomass of S. nigrum individuals. However, the level of metal in the matrix affected S. nigrum growth; plants grown at 100 mg kg-1 had significantly (P < 0.05) lower leaf, stem, root and total biomass than control ones and plants growing at 500 and 1000 mg kg-1 had the significantly (P < 0.05) lowest biomass. Plants inoculated with the AMF G. claroideum and G. intraradices presented significantly (P < 0.05) higher Zn accumulation in all plant tissues. In general, the stem tissues had the higher Zn content while the leaves registered the lowest values, which indicate a high translocation of the metal. AMF inoculation had no significant (P < 0.05) influence on the metal translocation within the plant. This study suggests that inoculation with the AMF G. claroideum or G. intraradices, can enhance the Zn accumulation in the tissues of S. nigrum, not affecting the plant translocation capacities.
KW - Arbuscular mycorrhizal fungi
KW - Black nightshade
KW - Heavy metal
KW - Phytoextraction
KW - Phytoremediation
KW - Zinc
UR - http://www.scopus.com/inward/record.url?scp=33748524185&partnerID=8YFLogxK
U2 - 10.1016/j.chemosphere.2006.03.022
DO - 10.1016/j.chemosphere.2006.03.022
M3 - Article
C2 - 16650459
AN - SCOPUS:33748524185
SN - 0045-6535
VL - 65
SP - 1256
EP - 1263
JO - Chemosphere
JF - Chemosphere
IS - 7
ER -
