NDLI: A Novel Family of Cys-Rich Membrane Proteins Mediates Cadmium Resistance in Arabidopsis1

Content Provider	PubMed Central
Author	Song, Won-yong Enrico, Martinoia Lee, Joohyun Kim, Dongwoo Kim, Do-young Vogt, Esther Shim, Donghwan Choi, Kwan Sam Hwang, Inhwan Lee, Youngsook
Copyright Year	2004
Abstract	Cadmium (Cd) is a widespread pollutant that is toxic to plant growth. However, only a few genes that contribute to Cd resistance in plants have been identified. To identify additional Cd(II) resistance genes, we screened an Arabidopsis cDNA library using a yeast (Saccharomyces cerevisiae) expression system employing the Cd(II)-sensitive yeast mutant ycf1. This screening process yielded a small Cys-rich membrane protein (Arabidopsis plant cadmium resistance, AtPcrs). Database searches revealed that there are nine close homologs in Arabidopsis. Homologs were also found in other plants. Four of the five homologs that were tested also increased resistance to Cd(II) when expressed in ycf1. AtPcr1 localizes at the plasma membrane in both yeast and Arabidopsis. Arabidopsis plants overexpressing AtPcr1 exhibited increased Cd(II) resistance, whereas antisense plants that showed reduced AtPcr1 expression were more sensitive to Cd(II). AtPcr1 overexpression reduced Cd uptake by yeast cells and also reduced the Cd contents of both yeast and Arabidopsis protoplasts treated with Cd. Thus, it appears that the Pcr family members may play an important role in the Cd resistance of plants.
Related Links	http://dx.doi.org/10.1104/pp.103.037739
Ending Page	1039
Page Count	13
Starting Page	1027
File Format	PDF
ISSN	00320889
e-ISSN	15322548
Journal	Plant Physiology
Issue Number	2
Volume Number	135
Language	English
Publisher	American Society of Plant Biologists
Publisher Date	2004-06-01
Access Restriction	Open
Rights Holder	American Society of Plant Biologists
Subject Keyword	Plant Science Genetics Physiology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Genetics Physiology Plant Science

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