skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Spatial imaging and speciation of Cu in rice ( Oryza sativa L.) roots using synchrotron-based X-ray microfluorescence and X-ray absorption spectroscopy

Authors:
; ; ; ; ; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE Office of Science (SC), Biological and Environmental Research (BER) (SC-23)
OSTI Identifier:
1413547
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Chemosphere
Additional Journal Information:
Journal Volume: 175; Journal Issue: C; Related Information: CHORUS Timestamp: 2017-12-15 07:03:32; Journal ID: ISSN 0045-6535
Publisher:
Elsevier
Country of Publication:
United Kingdom
Language:
English

Citation Formats

Lu, Lingli, Xie, Ruohan, Liu, Ting, Wang, Haixing, Hou, Dandi, Du, Yonghua, He, Zhenli, Yang, Xiaoe, Sun, Hui, and Tian, Shengke. Spatial imaging and speciation of Cu in rice ( Oryza sativa L.) roots using synchrotron-based X-ray microfluorescence and X-ray absorption spectroscopy. United Kingdom: N. p., 2017. Web. doi:10.1016/j.chemosphere.2017.02.082.
Lu, Lingli, Xie, Ruohan, Liu, Ting, Wang, Haixing, Hou, Dandi, Du, Yonghua, He, Zhenli, Yang, Xiaoe, Sun, Hui, & Tian, Shengke. Spatial imaging and speciation of Cu in rice ( Oryza sativa L.) roots using synchrotron-based X-ray microfluorescence and X-ray absorption spectroscopy. United Kingdom. doi:10.1016/j.chemosphere.2017.02.082.
Lu, Lingli, Xie, Ruohan, Liu, Ting, Wang, Haixing, Hou, Dandi, Du, Yonghua, He, Zhenli, Yang, Xiaoe, Sun, Hui, and Tian, Shengke. Mon . "Spatial imaging and speciation of Cu in rice ( Oryza sativa L.) roots using synchrotron-based X-ray microfluorescence and X-ray absorption spectroscopy". United Kingdom. doi:10.1016/j.chemosphere.2017.02.082.
@article{osti_1413547,
title = {Spatial imaging and speciation of Cu in rice ( Oryza sativa L.) roots using synchrotron-based X-ray microfluorescence and X-ray absorption spectroscopy},
author = {Lu, Lingli and Xie, Ruohan and Liu, Ting and Wang, Haixing and Hou, Dandi and Du, Yonghua and He, Zhenli and Yang, Xiaoe and Sun, Hui and Tian, Shengke},
abstractNote = {},
doi = {10.1016/j.chemosphere.2017.02.082},
journal = {Chemosphere},
number = C,
volume = 175,
place = {United Kingdom},
year = {Mon May 01 00:00:00 EDT 2017},
month = {Mon May 01 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1016/j.chemosphere.2017.02.082

Citation Metrics:
Cited by: 2works
Citation information provided by
Web of Science

Save / Share:
  • Development of asynaptic rice plants was induced by x irradiation in X/ sub 2/ generation of the rice varieties Asahi and Aikoku. It was difficult to distinguish morphologically such asynaptic plants from the normal ones except for their high sterility and specific awn character. These asynaptic plants were also characterized by erect panicles and by their continuously producing fresh tillers until after the normal ones had stopped growth and attained their maturity. The asynaptic plants showed very high sterility, attaining a seed set of less than 1%. No seeds could be obtained from both reciprocal crosses between normal and asynapticmore » plants. From the segregating behavior of this asynaptic character in X/sub 2/, in the X/sub 3/ generation, and in the open-pollinated offspring of the asynaptic plants, it was concluded that the asynaptic character is inherited by a simple recessive gene which causes complete failure of chromosome pairing at the early stage of meiosis. No pairings of homologous chromosomes were ascertained at zygotene and pachytene stages in these asynaptic forms. The number of paired chromosomes at diakinesis and at Ml varied from 0 to 12, and the mean number varied from plant to plant, and from one another to another in the same plant. The average number of chiasmata per bivalent was 1.03 for the asynaptic plant and 2.21 for the normal one when all chromosomes, paired and unpaired, were taken into consideration. However, it was 1.83 for the asynaptic plant and 2.21 for the normal one when only paired chromosomes were counted. On the other hand, the numbers of chiasmata on each nucleolar chromosome were 2.14 and 2.11 for the asynaptic and the normal plants, respectively, if only paired chromosomes were considered, and 1.36 and 2.11 for the asynaptic plant and the normal one, respectively, if all chromosomes were taken into consideration. At anaphase I, various numbers of lagging chromosomes were usually observed. The asynaptic plants showed irregular behavior of univalent chromosomes, resuiting in the complete abortion of their pollen grain. (BBB)« less
  • Our aim was to investigate rhizosphere effects on the chemical behavior of Cd. This was done in a glasshouse experiment, where two rice cultivars (Zhenong54 and Sixizhan) were grown in soil spiked with cadmium (Cd) at two levels, 3.9{+-}0.5 and 8.3{+-}0.5 mg kg{sup -1} soil, placed in a rhizobox until ripening stage. Chemical forms of cadmium near the root surface were then assessed using a sequential extraction procedure (SEP). There were significant differences in Cd species, especially exchangeable Cd (EXC-Cd) between the two rice cultivars as affected by rice roots. The lowest EXC-Cd with Zhenong54 appeared in the near-rhizosphere areamore » with little difference between tillering stage and ripening stage while Sixizhan had its lowest EXC-Cd concentration in the root compartment. Both cultivars had slight changes in the Fe/Mn oxide-bound fraction of Cd (FMO-Cd) at the grain ripening stage while the control treatments without plants had a significant increase in FMO-Cd at the same time, indicating a transformation from a less bioavailable form (FMO-Cd) to more bioavailable forms (EXC-Cd). Soil microbial biomass in the vicinity of the root surface had opposite trends to some extent with EXC-Cd, partly because of the root-induced changes to bioavailable Cd. Unlike Zhenong54, Sixizhan had a higher Cd concentration in the root, but only a small proportion of Cd translocated from the root to grain. - Research highlights: {yields}We investigated genotypic effects on Cd speciation in the rhizosphere of rice. {yields}Zhenong54 (ZN) and Sixizhan (SX) were grown in rhizobox to show root-induced changes. {yields}Lowest exchangeable-Cd of ZN was in near-rhizosphere while SX in root compartment. {yields}Soil microbial biomass had opposite trends with exchangeable-Cd in both cultivars. {yields}Unlike ZN, SX had higher Cd content in roots, but lower Cd content in shoots.« less