Plant Genome Diversity Volume 1: Plant Genomes, their by Lex E. Flagel, Benjamin K. Blackman (auth.), Jonathan F.

By Lex E. Flagel, Benjamin K. Blackman (auth.), Jonathan F. Wendel, Johann Greilhuber, Jaroslav Dolezel, Ilia J. Leitch (eds.)

In this well timed new 2-volume treatise, specialists from worldwide have banded jointly to supply a first-of-its-kind synopsis of the intriguing and fast paced box of plant evolutionary genomics. In quantity I of Plant Genome variety, an replace is equipped on what we have now discovered from plant genome sequencing tasks. this is often via extra centred chapters at the numerous genomic “residents” of plant genomes, together with transposable parts, centromeres, small RNAs, and the evolutionary dynamics of genes and non-coding sequences. consciousness is attracted to advances in our figuring out of plant mitochondrial and plastid genomes, in addition to the importance of duplication in genic evolution and the non-independent evolution between sequences in plant genomes. eventually, quantity I offers an advent to the colourful new frontier of plant epigenomics, describing the present kingdom of our wisdom and the evolutionary implications of the epigenomic landscape.

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Extra info for Plant Genome Diversity Volume 1: Plant Genomes, their Residents, and their Evolutionary Dynamics

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Genetics 101:519–531 Hirsch C, Jiang J (2012) Centromeres: sequences, structure, and biology. In: Wendel JF (ed) Plant genome diversity, vol 1, Plant genomes, their residents, and their evolutionary dynamics. Springer, Wien, New York Hobza R, Lengerova M, Svoboda J, Kubekova H, Kejnovsky E, Vyskot B (2006) An accumulation of tandem DNA repeats on the Y chromosome in Silene latifolia during early stages of sex chromosome evolution. Chromosoma 115:376–382 Holligan D, Zhang X, Jiang N, Pritham EJ, Wessler SR (2006) The transposable element landscape of the model legume Lotus japonicus.

1 Mechanisms of Transposition The mechanism by which a TE family is amplified may determine, in part, their pattern of proliferation and diversification in the genome. Part of the proliferative success of Class I retrotransposons in many taxonomic groups (particularly plants) is ensured by their replicative mode of transposition, where in principle, a small number of ‘master’ copies can produce hundreds or thousands of ‘daughter’ copies during a single amplification event (Fig. 2a, b). Evidence of such transpositional “bursts” comes from phylogenetically informed analyses in both rice and Gossypium, where comparative sequence analyses within various TE families indicates waves of TE accumulation surrounded by periods of relative quiescence (Piegu et al.

2004). Non-LTR retrotransposons (LINEs and SINEs) are, as their name indicates, not flanked by LTRs, but complete LINEs can reach several thousand base pairs in length, contain coding sequences responsible for transposition, and often display a stretch of adenines or a simple sequence repeat at their 30 end (Figs. 2c). Class II DNA elements are found in most eukaryotes, and despite their conservative transposition mechanism, have been capable of attaining relatively high copy numbers in some plants (see Sect.

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