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@article{Frantzeskakis:2018:10.1186/s12864-018-4750-6,
author = {Frantzeskakis, L and Kracher, B and Kusch, S and Yoshikawa-Maekawa, M and Bauer, S and Pedersen, C and Spanu, PD and Maekawa, T and Schulze-Lefert, P and Panstruga, R},
doi = {10.1186/s12864-018-4750-6},
journal = {BMC GENOMICS},
title = {Signatures of host specialization and a recent transposable element burst in the dynamic one-speed genome of the fungal barley powdery mildew pathogen},
url = {http://dx.doi.org/10.1186/s12864-018-4750-6},
volume = {19},
year = {2018}
}

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TY  - JOUR
AB  - BackgroundPowdery mildews are biotrophic pathogenic fungi infecting a number of economically important plants. The grass powdery mildew, Blumeria graminis, has become a model organism to study host specialization of obligate biotrophic fungal pathogens. We resolved the large-scale genomic architecture of B. graminis forma specialis hordei (Bgh) to explore the potential influence of its genome organization on the co-evolutionary process with its host plant, barley (Hordeum vulgare).ResultsThe near-chromosome level assemblies of the Bgh reference isolate DH14 and one of the most diversified isolates, RACE1, enabled a comparative analysis of these haploid genomes, which are highly enriched with transposable elements (TEs). We found largely retained genome synteny and gene repertoires, yet detected copy number variation (CNV) of secretion signal peptide-containing protein-coding genes (SPs) and locally disrupted synteny blocks. Genes coding for sequence-related SPs are often locally clustered, but neither the SPs nor the TEs reside preferentially in genomic regions with unique features. Extended comparative analysis with different host-specific B. graminis formae speciales revealed the existence of a core suite of SPs, but also isolate-specific SP sets as well as congruence of SP CNV and phylogenetic relationship. We further detected evidence for a recent, lineage-specific expansion of TEs in the Bgh genome.ConclusionsThe characteristics of the Bgh genome (largely retained synteny, CNV of SP genes, recently proliferated TEs and a lack of significant compartmentalization) are consistent with a “one-speed” genome that differs in its architecture and (co-)evolutionary pattern from the “two-speed” genomes reported for several other filamentous phytopathogens.
AU  - Frantzeskakis,L
AU  - Kracher,B
AU  - Kusch,S
AU  - Yoshikawa-Maekawa,M
AU  - Bauer,S
AU  - Pedersen,C
AU  - Spanu,PD
AU  - Maekawa,T
AU  - Schulze-Lefert,P
AU  - Panstruga,R
DO  - 10.1186/s12864-018-4750-6
PY  - 2018///
SN  - 1471-2164
TI  - Signatures of host specialization and a recent transposable element burst in the dynamic one-speed genome of the fungal barley powdery mildew pathogen
T2  - BMC GENOMICS
UR  - http://dx.doi.org/10.1186/s12864-018-4750-6
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000432703400005&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - http://hdl.handle.net/10044/1/60634
VL  - 19
ER  -

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