scholarly journals A Member of the Heavy Metal P-Type ATPase OsHMA5 Is Involved in Xylem Loading of Copper in Rice

2013 ◽  
Vol 163 (3) ◽  
pp. 1353-1362 ◽  
Author(s):  
Fenglin Deng ◽  
Naoki Yamaji ◽  
Jixing Xia ◽  
Jian Feng Ma
Keyword(s):  
Heavy Metal ◽  
Xylem Loading ◽  
P Type

scholarly journals Natural variations in the P-type ATPase heavy metal transporter ZmCd1 controlling cadmium accumulation in maize grains

2021 ◽  
Author(s):  
Bin Tang ◽  
Meijie Luo ◽  
Yunxia Zhang ◽  
Huanle Guo ◽  
Jingna Li ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Molecular Markers ◽  
Genome Wide Association Study ◽  
Inbred Lines ◽  
Cd Accumulation ◽  
A Genome ◽  
Maize Varieties ◽  
Natural Variations ◽  
Maize Grain ◽  
P Type

SummaryCadmium (Cd) accumulation in maize grains is detrimental to human health. Developing maize varieties with low-Cd contents via marker-assisted selection is important for ensuring the production of maize grains safe for consumption. However, the key gene controlling maize grain Cd accumulation has not been cloned. In this study, we identified two major loci for maize grain Cd accumulation (qCd1 and qCd2) on chromosome 2 during a genome-wide association study (GWAS). The qCd1 locus was analyzed by bulked segregant RNA-seq and fine mapping with a biparental segregating population of Jing724 (low-Cd line) and Mo17 (high-Cd line). The ZmCd1 candidate gene in the qCd1 locus encodes a vacuolar membrane-localized heavy metal P-type ATPase transporter, ZmHMA3, which is orthologous to the tonoplast Cd transporter OsHMA3. Genomic DNA sequence and transcript analyses suggested that a transposon in intron 1 of ZmCd1 is responsible for the abnormal amino acid sequence in Mo17. An EMS mutant analysis and an allelism test confirmed ZmCd1 influences maize grain Cd accumulation. The natural variations in ZmCd1 were used to develop four PCR-based molecular markers, which revealed five ZmCd1 haplotypes in the GWAS population. The molecular markers were also used to predict the grain Cd contents in commonly cultivated maize germplasms in China. The predicted Cd contents for 36 inbred lines and 13 hybrids were consistent with the measured Cd contents. Furthermore, several low-Cd elite inbred lines and hybrids were identified, including Jing2416, MC01, Jingnonke728, and Jingke968. Therefore, the molecular markers developed in this study are applicable for molecular breeding and developing maize varieties with low grain Cd contents.

scholarly journals Preferential Delivery of Zinc to Developing Tissues in Rice Is Mediated by P-Type Heavy Metal ATPase OsHMA2

2013 ◽  
Vol 162 (2) ◽  
pp. 927-939 ◽  
Author(s):  
Naoki Yamaji ◽  
Jixing Xia ◽  
Namiki Mitani-Ueno ◽  
Kengo Yokosho ◽  
Jian Feng Ma
Keyword(s):  
Heavy Metal ◽  
P Type ◽  
Heavy Metal Atpase

scholarly journals Homology modeling andin vivofunctional characterization of the zinc permeation pathway in a heavy metal P-type ATPase

2018 ◽  
Vol 70 (1) ◽  
pp. 329-341 ◽  
Author(s):  
Gilles Lekeux ◽  
Jean-Marc Crowet ◽  
Cécile Nouet ◽  
Marine Joris ◽  
Alice Jadoul ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Homology Modeling ◽  
P Type

scholarly journals A heavy metal P-type ATPase OsHMA4 prevents copper accumulation in rice grain

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Xin-Yuan Huang ◽  
Fenglin Deng ◽  
Naoki Yamaji ◽  
Shannon R.M. Pinson ◽  
Miho Fujii-Kashino ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Copper Accumulation ◽  
Rice Grain ◽  
P Type

Structural and functional relationships between type 1B heavy metal-transporting P-type ATPases in Arabidopsis

2003 ◽  
Vol 159 (2) ◽  
pp. 315-321 ◽  
Author(s):  
Christopher S. Cobbett ◽  
Dawar Hussain ◽  
Michael J. Haydon
Keyword(s):  
Heavy Metal ◽  
Functional Relationships ◽  
P Type

Dlts Ciiaracterizati oh of Precipitation Induced Microdefects

1986 ◽  
Vol 71 ◽  
Author(s):  
F.D. Whitwer ◽  
H. Haddad ◽  
L. Forbes
Keyword(s):  
Heavy Metal ◽  
Deep Level ◽  
Silicon Wafers ◽  
Lower Half ◽  
Type Silicon ◽  
P Type

AbstractCapacitance DLTS measurements have been performed on heavily precipitated n— and p—type silicon wafers. The results indicate heavy metal gettering with a mid-bandgap deep level (0.55eV) for n—type silicon. The results for p—type siliconshow a band of states present in the lower half of the bandgap. This band of states correlates well to the band of allowed energies found in heavily dislocated p—type silicon.

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