Draft genome sequence of the nitrogen-fixing Rhizobium sullae type strain IS123<sup>T</sup> focusing on the key genes for symbiosis with its host Hedysarum coronarium L.

Sablok, G; Rosselli, R; Seeman, T; van Velzen, R; Polone, E; Giacomini, A; La Porta, N; Geurts, R; Muresu, R; Squartini, A

Draft genome sequence of the nitrogen-fixing Rhizobium sullae type strain IS123<sup>T</sup> focusing on the key genes for symbiosis with its host Hedysarum coronarium L.

Sablok, G

Rosselli, R Seeman, T van Velzen, R Polone, E Giacomini, A La Porta, N Geurts, R Muresu, R Squartini, A

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Publication Type:: Journal Article
Citation:: Frontiers in Microbiology, 2017, 8 (JUL)
Issue Date:: 2017-07-26

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Field	Value	Language
dc.contributor.author	Sablok, G https://orcid.org/0000-0002-4157-9405	en_US
dc.contributor.author	Rosselli, R	en_US
dc.contributor.author	Seeman, T	en_US
dc.contributor.author	van Velzen, R	en_US
dc.contributor.author	Polone, E	en_US
dc.contributor.author	Giacomini, A	en_US
dc.contributor.author	La Porta, N	en_US
dc.contributor.author	Geurts, R	en_US
dc.contributor.author	Muresu, R	en_US
dc.contributor.author	Squartini, A	en_US
dc.date.available	2017-07-03	en_US
dc.date.issued	2017-07-26	en_US
dc.identifier.citation	Frontiers in Microbiology, 2017, 8 (JUL)	en_US
dc.identifier.uri	http://hdl.handle.net/10453/125808
dc.description.abstract	© 2017 Sablok, Rosselli, Seeman, van Velzen, Polone, Giacomini, La Porta, Geurts, Muresu and Squartini. The prominent feature of rhizobia is their molecular dialogue with plant hosts. Such interaction is enabled by the presence of a series of symbiotic genes encoding for the synthesis and export of signals triggering organogenetic and physiological responses in the plant. The genome of the Rhizobium sullae type strain IS123T nodulating the legume Hedysarum coronarium, was sequenced and resulted in 317 scaffolds for a total assembled size of 7,889,576 bp. Its features were compared with those of genomes from rhizobia representing an increasing gradient of taxonomical distance, from a conspecific isolate (Rhizobium sullae WSM1592), to two congeneric cases (Rhizobium leguminosarum bv. viciae and Rhizobium etli) and up to different genera within the legume-nodulating taxa. The host plant is of agricultural importance, but, unlike the majority of other domesticated plant species, it is able to survive quite well in the wild. Data showed that that the type strain of R. sullae, isolated from a wild host specimen, is endowed with a richer array of symbiotic genes in comparison to other strains, species or genera of rhizobia that were rescued from domesticated plant ecotypes. The analysis revealed that the bacterium by itself is incapable of surviving in the extreme conditions that its host plant can tolerate. When exposed to drought or alkaline condition, the bacterium depends on its host to survive. Data are consistent with the view of the plant phenotype as the primary factor enabling symbiotic nitrogen fixing bacteria to survive in otherwise limiting environments.	en_US
dc.relation.ispartof	Frontiers in Microbiology	en_US
dc.relation.isbasedon	10.3389/fmicb.2017.01348	en_US
dc.title	Draft genome sequence of the nitrogen-fixing Rhizobium sullae type strain IS123<sup>T</sup> focusing on the key genes for symbiosis with its host Hedysarum coronarium L.	en_US
dc.type	Journal Article
utslib.citation.volume	JUL	en_US
utslib.citation.volume	8	en_US
utslib.for	0605 Microbiology	en_US
utslib.for	0502 Environmental Science and Management	en_US
utslib.for	0503 Soil Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Strength - C3 - Climate Change Cluster
utslib.copyright.status	open_access
pubs.issue	JUL	en_US
pubs.publication-status	Published	en_US
pubs.volume	8	en_US

Abstract:

© 2017 Sablok, Rosselli, Seeman, van Velzen, Polone, Giacomini, La Porta, Geurts, Muresu and Squartini. The prominent feature of rhizobia is their molecular dialogue with plant hosts. Such interaction is enabled by the presence of a series of symbiotic genes encoding for the synthesis and export of signals triggering organogenetic and physiological responses in the plant. The genome of the Rhizobium sullae type strain IS123T nodulating the legume Hedysarum coronarium, was sequenced and resulted in 317 scaffolds for a total assembled size of 7,889,576 bp. Its features were compared with those of genomes from rhizobia representing an increasing gradient of taxonomical distance, from a conspecific isolate (Rhizobium sullae WSM1592), to two congeneric cases (Rhizobium leguminosarum bv. viciae and Rhizobium etli) and up to different genera within the legume-nodulating taxa. The host plant is of agricultural importance, but, unlike the majority of other domesticated plant species, it is able to survive quite well in the wild. Data showed that that the type strain of R. sullae, isolated from a wild host specimen, is endowed with a richer array of symbiotic genes in comparison to other strains, species or genera of rhizobia that were rescued from domesticated plant ecotypes. The analysis revealed that the bacterium by itself is incapable of surviving in the extreme conditions that its host plant can tolerate. When exposed to drought or alkaline condition, the bacterium depends on its host to survive. Data are consistent with the view of the plant phenotype as the primary factor enabling symbiotic nitrogen fixing bacteria to survive in otherwise limiting environments.

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http://hdl.handle.net/10453/125808