Cloning and characterization of phosphorus starvation inducible Brassica napus PURPLE ACID PHOSPHATASE 12 gene family, and imprinting of a recently evolved MITE-minisatellite twin structure.

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Kun LuJia-Na Li

Abstract

Purple acid phosphatase (PAP) is important for phosphorus assimilation and in planta redistribution. In this study, seven Brassica napus PAP12 (BnPAP12) genes orthologous to Arabidopsis thaliana PAP12 (AtPAP12) are isolated and characterized. NCBI BLASTs, multi-alignments, conserved domain prediction, and featured motif/residue characterization indicate that all BnPAP12 members encode dimeric high molecular weight plant PAPs. BnPAP12-1, BnPAP12-2, BnPAP12-3 and BnPAP12-7 (Group I) have six introns and encode 469-aa polypeptides structurally comparable to AtPAP12. BnPAP12-4 and BnPAP12-6 (Group II) have seven introns and encode 526-aa PAP12s. Encoding a 475-aa polypeptide, BnPAP12-5 (Group III) is evolved from a chimera of 5' part of Group I and 3' part of Group II. Sequence characterization and Southern detection suggest that there are about five BnPAP12 alleles. Homoeologous non-allelic fragment exchanges exist among BnPAP12 genes. BnPAP12-4 and BnPAP12-6 are imprinted with a Tourist-like miniature inverted-repeat transposable element (MITE) which is tightly associated with a novel minisatellite composed of four 36-bp tandem repeats. Existing solely in B. rapa/oleracea lineage, this recently evolved MITE-minisatellite twin str...Continue Reading

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Citations

Jan 12, 2011·Plant Physiology·Giuseppe DionisioHenrik Brinch-Pedersen
Jun 24, 2020·BMC Plant Biology·Mengjuan RenHongzhi Shi

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