Characterization of expressed genes in the SLL2 region of self-compatible Arabidopsis thaliana.

DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes Pub Date : 2001-01-01 DOI:10.1093/DNARES/8.5.215

Y. Takada, A. Ito, C. Ninomiya, T. Kakizaki, Y. Takahata, G. Suzuki, K. Hatakeyama, K. Hinata, H. Shiba, S. Takayama, A. Isogai, M. Watanabe

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引用次数: 9

Abstract

Self-incompatibility in Brassica species is regulated by a set of S-locus genes: SLG, SRK, and SP11/SCR. In the vicinity of the S-locus genes, several expressed genes, SLL2 and SP2/ClpP, etc., were identified in B. campestris. Arabidopsis thaliana is a self-compatible Brassica relative, and its complete genome has been sequenced. From comparison of the genomic sequences between B. campestris and A. thaliana, microsynteny between gene clusters of Arabidopsis and Brassica SLL2 regions was observed, though the S-locus genes, SLG, SRK, and SP11/SCR were not found in the region of Arabidopsis. Almost all genes predicted in this region of Arabidopsis were expressed in both vegetative and reproductive organs, suggesting that the genes in the SLL2 region might not be related to self-incompatibility. Considering the recent speculation that the S-locus genes were translocated as a single unit between Arabidopsis and Brassica, the translocation might have occurred in the region between the SLL2 and SP7 genes.

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拟南芥自亲和性SLL2区表达基因的研究。

芸苔属植物的自交不亲和性受SLG、SRK和SP11/SCR三组s位点基因调控。在s位点基因附近，油菜芽孢杆菌中还发现了SLL2、SP2/ClpP等表达基因。拟南芥(Arabidopsis thaliana)是芸苔属自交亲缘植物，其全基因组已被测序。通过对拟南芥和拟南芥基因组序列的比较，发现拟南芥和芸苔SLL2区域的基因簇存在微共生性，但在拟南芥区域未发现s位点基因、SLG、SRK和SP11/SCR。几乎所有在该区域预测的基因都在拟南芥营养和生殖器官中表达，这表明SLL2区域的基因可能与自交不亲和无关。考虑到最近的推测，s位点基因在拟南芥和芸苔之间作为一个单一的单元易位，易位可能发生在SLL2和SP7基因之间的区域。

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DNA Research: An International Journal for Rapid Publication of Reports on Genes and Genomes

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