1. Aoki N, Hirose T, Takahashi S, Ono K, Ishimaru K, Oshugi R (1999) Molecular cloning and expression analysis of a gene for a sucrose transporter in maize (Zea mays L.). Plant Cell Physiol 40:99?112
2. Aoki N, Hirose T, Scofield GN, Whitfeld PR, Furbank RT (2003) The sucrose transporter gene family in rice. Plant Cell Physiol 44:223?232
3. Arango M, Gévaudant F, Oufattole M, Boutry M (2003) The plasma membrane proton pump ATPase: the significance of gene subfamilies. Planta 216:355?365
4. Ausubel FM, Brent R, Kingston RE, Moore D, Seidman JG, Smith JA, Struhl K, eds (1998) Current protocols in molecular biology. Greene Publishing Associates & Wiley-Interscience, New York
5. Bennett WF, ed (1997) Nutrients deficiencies & toxicities in crop plants. The American Phythopathological Society Press, St Paul, MN