Dynamics and evolution of the inverted repeat-large single copy junctions in the chloroplast genomes of monocots |
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| Authors: | Rui-Jiang Wang Chiao-Lei Cheng Ching-Chun Chang Chun-Lin Wu Tian-Mu Su Shu-Miaw Chaw |
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| Affiliation: | (1) South China Botanical Garden, the Chinese Academy of Sciences, Guangzhou, 510650, China;(2) Research Center for Biodiversity, Academia Sinica, Taipei, 115, Taiwan;(3) Institute of Biotechnology, National Cheng Kung University, Tainan, Taiwan |
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| Abstract: | Background Various expansions or contractions of inverted repeats (IRs) in chloroplast genomes led to fluxes in the IR-LSC (large single copy) junctions. Previous studies revealed that some monocot IRs contain a trnH-rps19 gene cluster, and it has been speculated that this may be an evidence of a duplication event prior to the divergence of monocot lineages. Therefore, we compared the organizations of genes flanking two IR-LSC junctions in 123 angiosperm representatives to uncover the evolutionary dynamics of IR-LSC junctions in basal angiosperms and monocots. |
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