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논문 기본 정보

자료유형
학술저널
저자정보
Sharma Sheetal (Gujarat University) Gang Shraddha (Imperial College London) Schumacher Jorg (Imperial College London) Buck Martin (Imperial College London) Saraf Meenu (Gujarat University)
저널정보
한국유전학회 Genes & Genomics Genes & Genomics Vol.43 No.8
발행연도
2021.8
수록면
869 - 883 (15page)
DOI
10.1007/s13258-021-01099-8

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Background PGPR has substituted chemical fertilizers to enhance the nutrient profle of the soil. Although gene encoding for PGP activity is present in PGPB their activity changes in response to conditions. Objective To study comparative genomics for three Klebsiella strains and their PGPR activity in response to in vitro and soil condition. Methods We evaluated the activity of three Klebsiella spp. in two diferent conditions, specifc nitrogen-defcient MS media and greenhouse experiment. Applying comparative genomics, genes encoding for PGP traits were identifed from the wholegenome sequencing of the three strains. With the help of the RAST tool kit and functional annotation, a total number of genes encoding for cell wall capsule, nitrogen metabolism, sulfur genes and many other functional groups were identifed. With the help of blast circular genome, similarity between GC content, pseudogene and tRNA was represented. The percentage of gene similarity of SSN1 was generated against BLAST with M5a1 and SGM81. Other methods like synteny alignment and orthologous gene clusters were applied to understand the homologous present in three strains. Results SSN1 was actively producing the maximum amount of ammonia 10.97±0.29 μmol/mL compared to the other two strains. K. oxytoca M5a1 was considered negative for all PGP traits except ammonia production. The activity of SSN1 was showing a consistent pattern both the conditions whereas M5a1 was only active in vitro condition. Gene encoding for allantoin metabolism allD, allC, allB, allA, allE, allR, allH were identifed in SSN1 and M5a1 but was absent in SGM81. The highest COG was shared between SGM81 and SSN1 predicting a maximum number of similar genes. The nif gene cluster was 98% identical to the M5a1 strain. Conclusions Comparatively, SSN1 expressed the additional gene for various PGP traits which suggest higher efciency of strain in nitrogen defciency stress.
#Comparative genomics #Biological nitrogen fixation #Pot study #Klebsiella #Root elongation #PGPR genes

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참고문헌 (32)

참고문헌 신청
Farah Ahmad / 2008 / Screening of free-living rhizospheric bacteria for their multiple plant growth promoting activities / Microbiological Research 163(2):173~181 Crossref Ramy K Aziz / 2008 / The RAST Server: Rapid Annotations using Subsystems Technology / BMC Genomics 9(1):1~15 Crossref Avishek Banik / 2016 / Characterization of N2-fixing plant growth promoting endophytic and epiphytic bacterial community of Indian cultivated and wild rice (Oryza spp.) genotypes / Planta 243(3):799~812 Crossref J. M. Bremner / 1960 / Determination of nitrogen in soil by the Kjeldahl method / The Journal of Agricultural Science 55(1):11~33 Crossref M. Lutfu Cakmakci / 1981 / Characteristics of nitrogen-fixingKlebsiella oxytoca isolated from wheat roots / Plant and Soil 61(1-2):53~63 Crossref

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