Evolutionary implications of matK indels in Poaceae
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چکیده
منابع مشابه
Evolutionary Implications of Matk Indels in Poaceae1
Insertion/deletion events (indels) and nucleotide substitutions at the extreme 39 end of the chloroplast gene matK have been identified that distinguish certain major lineages of grasses. A 1-bp (base pair) deletion creating a shift in the open reading frame (ORF) and a point mutation support the positions of Streptochaeta and Anomochloa as the two most basal lineages in Poaceae. Another 1-bp d...
متن کاملExpression of matK: functional and evolutionary implications.
Strong phylogenetic signal from matK has rendered it an invaluable gene in plant systematic and evolutionary studies at various evolutionary depths. Further, matK is proposed as the only chloroplast-encoded group II intron maturase, thus implicating MATK in chloroplast posttranscriptional processing. For a protein-coding gene, matK has an unusual evolutionary mode and tempo, including relativel...
متن کاملPhylogeny of Poaceae Inferred from matK Sequences
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متن کاملCharacterization of the matK Gene in the Poaceae
The matK gene is named according to its possible maturase function and its location within the trnK gene encoding the tRNA (UUU). A 509 open reading frame was found to reside in an intron when the trnK gene was sequenced in tobacco (Nicotiana tabacum) (Sugita et al., 1985). Later, a complete sequence of the liverwort Marchantia polymorpha confirmed the existence of this open reading frame in th...
متن کاملPhylogeny of Poaceae Based on matK Gene Sequences
Phylogenetic reconstruction in the Poaceae began early in this century with proposed evolutionary hypotheses based on assessment of existing knowledge of grasses (e.g., Bew, 1929; Hubbard 1948; Prat, 1960; Stebbins, 1956, 1982; Clayton, 1981; Tsvelev, 1983). Imperical approaches to phylogenetic reconstruction of the Poaceae followed those initial hypotheses, starting with cladistic analyses of ...
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ژورنال
عنوان ژورنال: American Journal of Botany
سال: 1999
ISSN: 0002-9122,1537-2197
DOI: 10.2307/2656671