Molecular and morphological differentiation between the crop and weedy types in velvetleaf (Abutilon theophrasti Medik.) Using a chloroplast DNA marker: Seed source of the present invasive velvetleaf in Japan
Article Abstract:
A comparison of chloroplast DNA (cpDNA) sequences was carried out between the crop and weed types of Abutilon theophrasti to clarify the seed source of the present weedy velvetleaf in Japan. Three nucleotide substitutions, one six-base-pair insertion/deletion (indel) and one 30-base pair inversion was detected by a sequencing analysis of approximately 6 percent of the chloroplast genome.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 2004
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RNAi: A defensive RNA-silencing against viruses and transposable elements
Article Abstract:
RNA silencing is a form of nucleic-acid-based immunity, targeting viruses and genomic repeated sequences. RNAi acts as sequence-specific silencing mechanism which provides an ancestral cellular defence present in a wide range of organism from plants to human and which is required to inactivate exogenous viruses or genes present in multiple copies within the genome.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 2006
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The origin and evolution of geminivirus-related DNA sequences in Nicotiana
Article Abstract:
Relative rates of synonymous and nonsynonymous nucleotide substitutions were used to test the evidence of selection on GRD units and none were found within the GRD3 and GRD5 families. There is recurrent dynamics interplay between geminivirus and plant DNA in evolution.
Publication Name: Heredity
Subject: Biological sciences
ISSN: 0018-067X
Year: 2004
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