Abstract
In this study, we searched for anther-specific genes involved in male gametophyte development in apple (Malus × domestica Borkh. cv. Fuji) by differential display-PCR. Three full-length cDNAs were isolated, and the corresponding genomic sequences were determined by genome walking. The identified genes showed intronless 228- to 264-bp open reading frames and shared 82–90% nucleotide sequence. Sequence analysis identified that they encoded a putative arabinogalactan protein (AGP) and were designated MdAGP1, MdAGP2, and MdAGP3, respectively. RT (reverse transcriptase)-PCR revealed that the MdAGP genes were selectively expressed in the stamen. Promoter analysis confirmed that the MdAGP3 promoter was capable of directing anther- or pollen-specific expression of the GUS reporter in tobacco and apple. Furthermore, expression of ribosome-inactivating protein under the control of the MdAGP3 promoter induced complete sporophytic male sterility as we had expected.
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Abbreviations
- AGP:
-
Arabinogalactan protein
- GPI:
-
Glycosylphosphatidylinositol
- ORF:
-
Open reading frame
- RIP:
-
Ribosome inactivating protein
- UTR:
-
Untranslated region
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This work was supported by a grant (Code 20070301034011) from BioGreen21 program, Rural Development Administration, Republic of Korea.
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Communicated by J. R. Liu.
Y.-O. Choi and S.-S. Kim contributed equally to this work.
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Choi, YO., Kim, SS., Lee, S. et al. Isolation and promoter analysis of anther-specific genes encoding putative arabinogalactan proteins in Malus × domestica . Plant Cell Rep 29, 15–24 (2010). https://doi.org/10.1007/s00299-009-0794-z
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DOI: https://doi.org/10.1007/s00299-009-0794-z