ISSN:
1615-6110
Keywords:
Berberidaceae
;
Berberis
;
Mahonia higginsae
;
Chloroplast DNA (cpDNA)
;
Inverted Repeats (IR)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Restriction site maps and a clone bank of chloroplast DNA (cpDNA) ofMahonia higginsae (Munz)Ahrendt (Berberidaceae) were constructed. The size ofMahonia cpDNA was about 167 kb. Precise mapping using gene probes revealed that cpDNA ofM. higginsae has an inverted repeat (IR) 11.5 kb larger than the tobacco IR. The expansion of the IR into the large single copy region has resulted in the duplication of at least ten genes includingpsbB. The phylogenetic distribution of the expanded IR was examined in twenty-five species ofBerberis andMahonia, twenty species representing the fifteen remaining genera of theBerberidaceae, and four species from four allied families. Our survey indicates that only the species of the closely related generaBerberis andMahonia share the 11.5kb expansion of IR. This result supports their close phylogenetic relationship, which has been suggested previously by chromosomal, morphological, and serological data.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00983544
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