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题名: Impact of Funneliformis mosseae on the growth, lead uptake, and localization of Sophora viciifolia
作者: Zhouying Xu1, 2; Yihui Ban3, 4; Ren Yang3; Xiangyu Zhang3; Hui Chen3; Ming Tang1, 3
刊名: CANADIAN JOURNAL OF MICROBIOLOGY
出版日期: 2016
卷号: 64, 期号:4, 页码:361-373
关键词: arbuscular mycorrhizal fungi ; Sophora viciifolia L. ; root characteristics ; Pb ultrastructural localization ; TEM-EDS
DOI: 10.1139/cjm-2015-0732
通讯作者: Tang, M
文章类型: Article
英文摘要: px; "> <On the basis of a pot experiment under lead (Pb) stress, we investigated the effects of an arbuscular
mycorrhizal (AM) fungus (Funneliformis mosseae) on the growth and Pb uptake of Sophora viciifolia L., and explored the
Pb localization in AM roots using transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). The results showed that high Pb levels (500 and 1000 g/g) inhibited the growth of S. viciifolia seedlings.
Compared with the noninoculation treatment, F. mosseae inoculation decreased the Pb concentrations above- and
belowground by 61.0% and 15.2%, when exposed to Pb at a concentration of 1000 g/g. The root length, fork
number, tip number, surface area, and volume of mycorrhizal S. viciifolia were higher than those of the corresponding nonmycorrhizal plants. These parameters of mycorrhizal plants increased by 220%, 219%, 157%, 225%,
and 278% when plants were exposed to Pb at 1000 g/g compared with nonmycorrhizal plants. The ratio of root
length with diameters between 0–0.2 mm to the total root length significantly increased under Pb stress, and
F. mosseae inoculation significantly reduced the ratio. Under Pb stress, F. mosseae increased the ratios of root length
with 0.61–0.8 and 0.81–1.0 mm diameters to the total root length, indicating that F. mosseae tended to thicken the
roots of S. viciifolia under Pb additions. The combined results of TEM and EDS indicated that Pb deposited in not
only plant cells but also the cell walls and vacuoles of the AM fungal intracellular hyphae, thus revealing the
subcellular-level mechanism of AM fungi in alleviating the Pb toxicity to the host plant.
收录类别: SCI
语种: 英语
WOS记录号: WOS:000375626600008
通讯作者邮箱: tangm@nwsuaf.edu.cn
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.iswc.ac.cn/handle/361005/7813
Appears in Collections:水保所科研产出--SCI_2016--SCI

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作者单位: 1.State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling 712100, Shaanxi, People’s Republic of China
2.College of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, Hubei, People’s Republic of China
3.College of Forestry, Northwest A&F University, Yangling 712100, Shaanxi, People’s Republic of China
4.College of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, Hubei, People’s Republic of China

Recommended Citation:
Zhouying Xu,Yihui Ban,Ren Yang,et al. Impact of Funneliformis mosseae on the growth, lead uptake, and localization of Sophora viciifolia[J]. CANADIAN JOURNAL OF MICROBIOLOGY,2016,64(4):361-373.
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