| molecular characterization of a new begomovirus infecting sida cordifolia and its associated satellite dna molecules. | two virus isolates hn57 and hn60 were obtained from sida cordifolia showing mild upward leaf-curling symptoms in hainan province of china. comparison of partial sequences of dna-a like molecule confirmed the existence of a single type of begomovirus. the complete nucleotide sequence of dna-a of hn57 was determined to be 2757 nucleotides, with a genomic organization typical of begomoviruses. complete sequence comparison with other reported begomoviruses revealed that hn57 dna-a has the highest se ... | 2006 | 16990998 |