Abstract

In plant genomes, various segments of endogenous pararetroviruses (EPRVs) have been found in recent decades. Rice genomes also contain a number of segments of endogenous rice tungro bacilliform virus-like sequences (ERTBVs), many of which were present between AT dinucleotide repeats (ATrs). The infrastructure in rice genomes facilitates the analysis of ERTBV integration into ATrs based on the comparison of genomic sequences between two closely related rice subspecies, japonica and indica. In addition to ERTBVs, ATrs are able to incorporate various other DNA segments, such as episomal DNAs. This chapter summarizes the features of ERTBVs and describes a postulated process by which ERTBVs have been established in rice genomes.

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