Physiology and Molecular Biology of Stress ... - KHAM PHA MOI

Table 1. Proposed specificity and location of the major metal transporters in plants
Name Source Proposed Cellular location Main tissue References
specificity
expression
Chaperones
CCH A. thaliana Cu Phloem Himelblau and Amasino
2000; Mira et al., 2001.
Heavy metal ATPases (P 1B
)
RANI A. thaliana Cu Post-Golgi Whole plant Hirayama et al., 1999;
(AtHMA7) Woeste and Kieber 2000.
PAAI A. thaliana Cu Chloroplast Shikanai et al., 2003.
(AtHMA6)
HMA2 A. thaliana Zn Plasma membrane Roots, stems and Hussain et al., 2004.
leaves
HMA4 A. thaliana Zn Roots stems and Hussain et al., 2004.
leaves
Ca +2 -ATPases (P 2A
)
ECA1 A. thaliana Mn 2+ ER Roots? Wu et al., 2002.
Nramp
AtNramp 1 A. thaliana Fe, Mn Roots Willaims et al., 2000;
AtNramp 2 A. thaliana - Roots Maser et al., 2001.
AtNramp 3 A. thaliana Fe, Cd, Mn Vacuole Roots/shoots
AtNramp 4 A. thaliana Fe, Mn Roots/shoots
OsNramp 1 Oriza sativa Mn, Fe Roots Belouchi et al., 1995, 1997.
OsNramp 2 O. sativa Mn Leaves
OsNramp 3 O. sativa Mn Roots/leaves
LeNramp1 Lycopersicum Fe Roots Bereczky et, al., 2003.
esculentum
CDF
ZAT (AtMTP1) A. thaliana Zn Vesicular/vacuolar All tissues Van der Zaal et al., 1999.
TcZTP1 T. caerulescens Zn Intracellular membranes Leaves, roots Assuncao ~ et al., 2001.
Continued...
Heavy Metal Stress
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