Small single-copy region of plastid DNA in the non-photosynthetic angiosperm Epifagus virginiana contains only two genes. Differences among dicots, monocots and bryophytes in gene organization at a non-bioenergetic locus.
Small single-copy region of plastid DNA in the non-photosynthetic angiosperm Epifagus virginiana contains only two genes. Differences among dicots, monocots and bryophytes in gene organization at a non-bioenergetic locus.
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非光合作用被子植物 Epifagus virginiana 质体 DNA 的小单拷贝区域仅包含两个基因。
DOI:
10.1016/0022-2836(92)90718-y
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发表时间:
1992
影响因子:
5.6
通讯作者:
Palmer,JD
中科院分区:
文献类型:
--
作者:
Wolfe,KH;Morden,CW;Palmer,JD
We have determined the nucleotide sequence of a 7 kb (1 kb = 103base-pairs) region that includes the entire small single-copy region (SSC) of the plastid genome ofEpifagus virginiana, a non-photosynthetic, parasitic flowering plant. The SSC (4.8 kb) is considerably smaller than those of photosynthetic plants due to the complete deletion of all photosynthetic, chlororespiratory and ribosomal protein genes. This leaves only two genes: a protein gene of 1738 codons whose product is unlikely to be involved in bioenergetic processes and a leucine tRNA gene (trnLUAG). Both genes span junctions between the inverted repeat and the SSC, with the consequence that the terminal 20 base-pairs of the repeat is transcribed in both directions and functions both as the 3′ end of the tRNA gene and as an internal segment oforf1738. We find that the region of tobacco plastid DNA homologous toEpifagus orf1738contains a single open reading frame (ORF) of 1901 codons rather than the three ORFs of 1244, 273 and 228 codons originally reported. However, we confirm that the equivalent region of the bryophyteMarchantiacontains two genes (1068 and 464 codons) corresponding to the N and C-terminal portions of the dicot protein. In contrast, rice plastid DNA contains a severely truncated pseudogene at this locus.
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DOI:
10.1073/pnas.83.8.2584
发表时间:
1986-04
影响因子:
11.1
作者:
S. Beverley;T. Ellenberger;J. S. Cordingley
通讯作者:
S. Beverley;T. Ellenberger;J. S. Cordingley
影响因子:
--
作者:
S. Henikoff
通讯作者:
S. Henikoff
影响因子:
14.9
作者:
M. Ohme;T. Kamogashira;K. Shinozoki;M. Sugiura
通讯作者:
M. Sugiura
DOI:
--
发表时间:
1984
期刊:
影响因子:
--
作者:
A. McCarthy;D. Hardie
通讯作者:
D. Hardie
影响因子:
5.6
作者:
T. Kohchi;H. Shirai;H. Fukuzawa;T. Sano;T. Komano;K. Umesono;H. Inokuchi;H. Ozeki;K. Ohyama
通讯作者:
K. Ohyama