非光合作用被子植物質體基因研究
Date Issued
2004
Date
2004
Author(s)
DOI
922311B002026
Abstract
Chloroplasts are the eukaryotic organelles mainly responsible for photosynthesis. There are some flowering plants, however, lost the photosynthetic ability and became holoparasitic or saprophytic plants. The non-photosynthetic
plants usually retain a reduced plastid genome, although many of plastid genes are lost or become pseudogenes, especially the photosynthesis-related genes such as rbcL.
In order to elucidate the plastid genome
evolution in non-photosynthetic plants, we
examined nine non-photosynthetic plants native to Taiwan. We obtained all 18S rDNA sequences and seven 16S rDNA sequences of the examined taxa, and further
using the sequences to perform
phylogenetic analyses. In Balanophora, Cassytha and Orobanche, we obtained almost full length rbcL and matK sequences.
However, we only obtained rbcL from Cuscuta and matK sequence from Aeginetia.
The RT-PCR result shows that the rbcL transcripts were detected in Cuscuta, and suggests Cuscuta may have retain photosynthetic ability.
Subjects
non-photosynthetic plants
plastid genome
18S rDNA
16S rDNA
rbcL
matK
Publisher
臺北市：國立臺灣大學生態學與演化生物學研究所
Type
other
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