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小麦叶绿体基因组中五个tRNA基因和一个未鉴定阅读框的组织与序列：叶绿体基因组进化过程中基因重排的证据

Organization and sequence of five tRNA genes and of an unidentified reading frame in the wheat chloroplast genome: evidence for gene rearrangements during the evolution of chloroplast genomes.

作者信息

Quigley F, Weil J H

机构信息

Institut de Biologie Moléculaire et Cellulaire du CNRS, Université Louis Pasteur, Strasbourg, France.

出版信息

Curr Genet. 1985;9(6):495-503. doi: 10.1007/BF00434054.

DOI:10.1007/BF00434054
PMID:3870931
Abstract

The genes for the initiator tRNA(Met)CAU, tRNA(Gly)UCC, tRNA(Thr)GGU, tRNA(Glu)UUC and tRNA(Tyr)GUA and an open reading frame of 62 codons have been identified by sequencing a 2,358 bp BamHI and a 1,378 bp BamHI-Sst2 DNA fragments from wheat chloroplasts. A comparison of the organization of these five tRNA genes and of the open reading frame on the wheat, tobacco and spinach chloroplast genomes suggests that at least three genomic inversions must have occurred during the evolution of the wheat chloroplast genome from a spinach-like ancestor genome. Furthermore, it seems that in wheat the 91 bp intergenic region between the genes for the initiator tRNA(Met) and the gene for tRNA(Gly)UCC is one end-point of the 20 kbp genomic inversion proposed by Palmer and Thompson in the case of maize (Palmer and Thompson 1982). A 119 bp duplication is located at this junction: the first copy comprises the 91 bp of the intergenic region and the first 28 bp of the tRNA(Met) gene, the second copy is found downstream of the tRNA(Met) gene.

摘要

通过对来自小麦叶绿体的一段2358 bp的BamHI片段和一段1378 bp的BamHI - Sst2 DNA片段进行测序，已鉴定出起始tRNA(Met)CAU、tRNA(Gly)UCC、tRNA(Thr)GGU、tRNA(Glu)UUC和tRNA(Tyr)GUA的基因以及一个62个密码子的开放阅读框。对小麦、烟草和菠菜叶绿体基因组上这五个tRNA基因及开放阅读框的组织方式进行比较表明，从小麦叶绿体基因组由类似菠菜的祖先基因组进化而来的过程中，至少发生了三次基因组倒位。此外，在小麦中，起始tRNA(Met)基因与tRNA(Gly)UCC基因之间91 bp的基因间隔区似乎是Palmer和Thompson针对玉米提出的20 kbp基因组倒位的一个端点（Palmer和Thompson，1982）。在这个连接处存在一个119 bp的重复序列：第一个拷贝包含基因间隔区的91 bp和tRNA(Met)基因的前28 bp，第二个拷贝位于tRNA(Met)基因的下游。

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本文引用的文献

1
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Plant Mol Biol. 1985 Sep;4(5):305-10. doi: 10.1007/BF02418249.
2
Organization and nucleotide sequence of the genes for spinach chloroplast tRNA(Glu) and tRNA (Tyr.).菠菜叶绿体 tRNA(Glu)和 tRNA(Tyr.)基因的组织和核苷酸序列。
Plant Mol Biol. 1984 Sep;3(5):313-7. doi: 10.1007/BF00017785.
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DNA sequences for the Zea mays tRNA genes tV-UAC and tS-UGA: tV-UAC contains a large intron.
豌豆叶绿体 DNA 中转录 RNA 基因的核苷酸序列。
Plant Mol Biol. 1986 Jan;6(1):1-12. doi: 10.1007/BF00021301.
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Structures of tobacco chloroplast genes for tRNA(Ile) (CAU), tRNA (Leu) (CAA), tRNA (Cys) (GCA), tRNA (Ser) (UGA) and tRNA (Thr) (GGU): a compilation of tRNA genes from tobacco chloroplasts.烟草叶绿体基因 tRNA（Ile）（CAU）、tRNA（Leu）（CAA）、tRNA（Cys）（GCA）、tRNA（Ser）（UGA）和 tRNA（Thr）（GGU）的结构：烟草叶绿体 tRNA 基因的汇编。
Plant Mol Biol. 1986 Sep;7(5):385-92. doi: 10.1007/BF00032568.
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Physical map and gene localization on sunflower (Helianthus annuus) chloroplast DNA: evidence for an inversion of a 23.5-kbp segment in the large single copy region.向日葵叶绿体 DNA 的物理图谱和基因定位：大片段单拷贝区 23.5kbp 片段倒位的证据。
Plant Mol Biol. 1987 Sep;9(5):485-96. doi: 10.1007/BF00015880.
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