caa a22 4500 605517983 CHVBK 20210128100722.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s00572-015-0629-4 doi (NATIONALLICENCE)springer-10.1007/s00572-015-0629-4 Growth and photosynthetic responses of ectomycorrhizal pine seedlings exposed to elevated Cu in soils [Elektronische Daten] [Yahua Chen, Kazuhide Nara, Zhugui Wen, Liang Shi, Yan Xia, Zhenguo Shen, Chunlan Lian] It is still controversial whether ectomycorrhizal (ECM) mycelia filter out toxic metals in nutrient absorption of host trees. In this study, pine (Pinus densiflora) seedlings colonized by Cu-sensitive and Cu-tolerant ECM species were exposed to a wide spectrum of soil Cu concentrations to investigate functions of ECM fungi under Cu stress. The photosynthetic rates of intact needles were monitored in situ periodically. The biomass and elements of plants were also measured after harvest. The ameliorating effect of ECM infection on host plants exposed to toxic stress was metal concentration specific. Under lower-level Cu stress, ECM fungi increased seedling performance, while ECM seedlings accumulated more Cu than nonmycorrhizal (NM) seedlings. Under higher-level Cu stress, photosynthesis decreased well before visible symptoms of Cu toxicity appeared. The reduced photosynthesis and biomass in ECM seedlings compared to NM seedlings under higher Cu conditions were also accompanied by lower phosphorus in needles. There was no marked difference between the two fungal species. Our results indicate that the two ECM fungi studied in our system may not have an ability to selectively eliminate Cu in nutrient absorption and may not act as effective barriers that decrease toxic metal uptake into host plants. Springer-Verlag Berlin Heidelberg, 2015 Copper uptake nationallicence ECM fungi nationallicence Heavy metal-contaminated soils nationallicence Metal toxicity nationallicence Photosynthesis nationallicence Pine ( Pinus densiflora ) nationallicence Chen Yahua The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut Nara Kazuhide Department of Natural Environmental Studies, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, 277-8563, Kashiwa, Chiba, Japan aut Wen Zhugui The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut Shi Liang The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut Xia Yan The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut Shen Zhenguo The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut Lian Chunlan The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut Mycorrhiza Springer Berlin Heidelberg 25/7(2015-10-01), 561-571 0940-6360 25:7<561 2015 25 572 https://doi.org/10.1007/s00572-015-0629-4 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00572-015-0629-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chen Yahua The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut NATIONALLICENCE 700 1- Nara Kazuhide Department of Natural Environmental Studies, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, 277-8563, Kashiwa, Chiba, Japan aut NATIONALLICENCE 700 1- Wen Zhugui The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut NATIONALLICENCE 700 1- Shi Liang The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut NATIONALLICENCE 700 1- Xia Yan The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut NATIONALLICENCE 700 1- Shen Zhenguo The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut NATIONALLICENCE 700 1- Lian Chunlan The Collaborated Lab. of Plant Molecular Ecology (between College of Life Sciences of Nanjing Agricultural University and Asian Natural Environmental Science Center of the University of Tokyo), Nanjing Agricultural University, 210095, Nanjing, China aut NATIONALLICENCE 773 0- Mycorrhiza Springer Berlin Heidelberg 25/7(2015-10-01), 561-571 0940-6360 25:7<561 2015 25 572