scholarly journals Whole-Genome Sequence of the Nitrogen-Fixing Symbiotic Rhizobium Mesorhizobium loti Strain TONO

2016 ◽  
Vol 4 (5) ◽  
Author(s):  
Yoshikazu Shimoda ◽  
Hideki Hirakawa ◽  
Shusei Sato ◽  
Kazuhiko Saeki ◽  
Makoto Hayashi

Mesorhizobium loti is the nitrogen-fixing microsymbiont for legumes of the genus Lotus . Here, we report the whole-genome sequence of a Mesorhizobium loti strain, TONO, which is used as a symbiont for the model legume Lotus japonicus . The whole-genome sequence of the strain TONO will be a solid platform for comparative genomics analyses and for the identification of genes responsible for the symbiotic properties of Mesorhizobium species.

2018 ◽  
Vol 6 (7) ◽  
Author(s):  
Yu Kanesaki ◽  
Masaki Hirose ◽  
Yuu Hirose ◽  
Takatomo Fujisawa ◽  
Yasukazu Nakamura ◽  
...  

ABSTRACTWe report here the whole-genome sequence ofNostoc cycadaestrain WK-1, which was isolated from cyanobacterial colonies growing in the coralloid roots of the gymnospermCycas revoluta. It can provide valuable resources to study the mutualistic relationships and the syntrophic metabolisms between the cyanobacterial symbiont and the host plant,C. revoluta.


2018 ◽  
Vol 8 (7) ◽  
pp. 2225-2230 ◽  
Author(s):  
Zhen Xu ◽  
Raju Misra ◽  
Dorota Jamrozy ◽  
Gavin K. Paterson ◽  
Ronald R. Cutler ◽  
...  

2020 ◽  
Vol 33 (8) ◽  
pp. 1022-1024
Author(s):  
Giovanni Cafà ◽  
Thaís Regina Boufleur ◽  
Renata Rebellato Linhares de Castro ◽  
Nelson Sidnei Massola ◽  
Riccardo Baroncelli

The genus Stagonosporopsis is classified within the Didymellaceae family and has around 40 associated species. Among them, several species are important plant pathogens responsible for significant losses in economically important crops worldwide. Stagonosporopsis vannaccii is a newly described species pathogenic to soybean. Here, we present the draft whole-genome sequence, gene prediction, and annotation of S. vannaccii isolate LFN0148 (also known as IMI 507030). To our knowledge, this is the first genome sequenced of this species and represents a new useful source for future research on fungal comparative genomics studies.


2017 ◽  
Vol 5 (45) ◽  
Author(s):  
Antonio Zapparata ◽  
Daniele Da Lio ◽  
Stefania Somma ◽  
Isabel Vicente Muñoz ◽  
Luca Malfatti ◽  
...  

ABSTRACT Fusarium graminearum is among the main causal agents of Fusarium head blight (FHB), or scab, of wheat and other cereals, caused by a complex of Fusarium species, worldwide. Besides causing economic losses in terms of crop yield and quality, F. graminearum poses a severe threat to animal and human health. Here, we present the first draft whole-genome sequence of the mycotoxigenic Fusarium graminearum strain ITEM 124, also providing useful information for comparative genomics studies.


2006 ◽  
Vol 19 (7) ◽  
pp. 780-788 ◽  
Author(s):  
Md. Shakhawat Hossain ◽  
Yosuke Umehara ◽  
Hiroshi Kouchi

Nitrogen-fixing symbiosis between legume plants and rhizobia is established through complex interactions between two symbiotic partners. To identify the host legume genes that play crucial roles in such interactions, we isolated a novel Fix¯ mutant, Ljsym105, from a model legume Lotus japonicus MG-20. The Ljsym105 plants displayed nitrogen-deficiency symptoms after inoculation with Mesorhizobium loti under nitrogen-free conditions, but their growth recovered when supplied with nitrogen-rich nutrients. Ljsym105 was recessive and monogenic and mapped on the upper portion of chromosome 4. The mutant Ljsym105 formed an increased number of small and pale-pink nodules. Nitrogenase (acetylene reduction) activity per nodule fresh weight was low but retained more than 50% of that of the wild-type nodules. Light and electron microscopic observations revealed that the Ljsym105 nodule infected cells were significantly smaller than those of wild-type plants, contained enlarged symbiosomes with multiple bacteroids, and underwent deterioration of the symbiosomes prematurely as well as disintegration of the whole infected cell cytoplasm. These results indicate that the ineffectiveness of the Ljsym105 nodules is primarily due to impaired growth of infected cells accompanied with the premature senescence induced at relatively early stages of nodule development. These symbiotic phenotypes are discussed in respect to possible functions of the LjSym105 locus in the symbiotic interactions required for establishment of the nitrogen-fixing symbiosis.


2019 ◽  
Author(s):  
Maria Raquel V. Cosate ◽  
Tetsu Sakamoto ◽  
Élvio C. Moreira ◽  
José Miguel Ortega ◽  
Rômulo C. Leite ◽  
...  

AbstractLeptospirosis is a zoonotic disease caused by pathogenic spirochetes of the genus Leptospira. It has a global distribution and affects domestic animals, including cattle. In livestock production, Leptospira interrogans serogroup Sejroe serovar Hardjo is the major reproductive disease leading to economic losses. The whole-genome sequence of the first Brazilian clinical isolate classified as L. interrogans serogroup Sejroe serovar Hardjo strain Norma enabled the evaluation of its genomic features. Here, we investigated particularities of this isolate, obtained from a leptospirosis outbreak. Bioinformatic analysis using the L. interrogans serovar Hardjo str. Norma was applied as a reference for genomic evaluation and comparative analysis among L. interrogans and L. borgpetersenii serovars. Our data suggest the occurrence of genomic recombination in L. interrogans serovar Hardjo str. Norma encompassing 45 Kb located upstream of the rfb locus. A hallmark of genetic evolution was predicted through an orthologue analysis that identified that sugar enzymes associated with carbohydrate and lipid biosynthesis and metabolism composed this genetic module. Comparative genomics revealed a wide range of relatedness among the bacterial strains of serogroup Sejroe that are classified as L. interrogans and L. borgpetersenii species. Furthermore, identification of an IS3 family suggests a genetic recombination site in L. interrogans serovar Hardjo str. Norma that is distinct among L. interrogans serovars and may contribute to clarify the taxonomic classification of Leptospira spp.Impact StatementLeptospirosis remains an important neglected disease with worldwide distribution. This zoonotic disease impacts in the livestock production and the bovine infection is currently associated to species L. borgpetersenii and L. interrogans serovar Hardjo. L.interrogans serovar Hardjo infection is recognized as reproductive disease associated with abortion and economic lost. In this context, we studied a unique whole genome sequence of L. interrogans serovar Hardjo subtype Hardjo-prajitno isolated from bovine leptospirosis outbreaks in Brazilian dairy farm, one of the greatest country of milk production in world. We compared L. interrogans and L. borgpetersenii genomes with L. interrogans serogroup Sejroe serovar Hardjo subtype Hardjo-prajitno focusing on rfb locus and sugars biosynthesis. Leptospira spp. taxonomy and serology information are strictly associated with rfb locus and we found high correlation among bacterial strains classified in serogroup Sejroe. Although L. interrogans and L. borgpetersenii classified in serogroup Sejroe possess a greater genetic correlation, we uniquely identified that serovar Hardjo strains often possess identical loci carrying predicted sugar biossinthesis genes and mobile elements. The Sru (Sejroe specific Rfb Upstream locus) locus associated to rfb locus probably contribute to Leptospira spp. genetic information concerning serogroup and serovar degrees of taxonomic and serology in this microbiology field.Data SummaryAll Leptospira spp. genome sequences used in this study were retrieved from National Center for Biotechnology Information (NCBI) (Table 1) with NCBI ID: NZ_CP006723.1, NZ_CP012603.1, NC_004342.2, NZ_CP011934.1, NZ_AKXA02000040.1, NZ_CP013147.1, NZ_CP012029.1, NZ_CP015048.1, NC_008508.1, GCA_000216175.3,GCA_000244115.3, NC005823.1, GCA_000244395.3, GCA_000346975.1.HighlightsThe study identified potential molecular features associated with serovar Hardjo subtype Hardjo-prajitno, present in both L. interrogans and L. borgpetersenii, by comparative genomics.A new potential recombinant site found upstream of the rfb locus contains proteins that correlate with serogroup taxonomy in the Leptospira genus.The proteins encoded in the recombinant locus are associated with the synthesis of serological surface determinants such as carbohydrates and lipopolysaccharides.


PLoS ONE ◽  
2016 ◽  
Vol 11 (12) ◽  
pp. e0168994 ◽  
Author(s):  
Luke C. Kingry ◽  
Dhwani Batra ◽  
Adam Replogle ◽  
Lori A. Rowe ◽  
Bobbi S. Pritt ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document