scholarly journals Comparative genomic analysis of four representative plant growth-promoting rhizobacteria in Pseudomonas

BMC Genomics ◽  
2013 ◽  
Vol 14 (1) ◽  
pp. 271 ◽  
Author(s):  
Xuemei Shen ◽  
Hongbo Hu ◽  
Huasong Peng ◽  
Wei Wang ◽  
Xuehong Zhang
Keyword(s):  
Plant Growth ◽  
Genomic Analysis ◽  
Plant Growth Promoting Rhizobacteria ◽  
Comparative Genomic Analysis ◽  
Comparative Genomic ◽  
Plant Growth Promoting ◽  
Growth Promoting

scholarly journals A genome-annotated bacterial collection of the barley rhizosphere microbiota

2021 ◽  
Author(s):  
Senga Robertson-Albertyn ◽  
Federico Concas ◽  
Lynn H Brown ◽  
Jamie N Orr ◽  
James C Abbott ◽  
...  
Keyword(s):  
Plant Growth ◽  
Genomic Analysis ◽  
Comparative Genomic Analysis ◽  
Comparative Genomic ◽  
Strain Specificity ◽  
Bacterial Microbiota ◽  
A Genome ◽  
Plant Growth Promoting ◽  
Plant Microbiota ◽  
Growth Promoting

ABSTRACTWe generated a bacterial collection from the rhizosphere of cultivated barley (Hordeum vulgare L. ssp. vulgare) to assess taxonomic distribution of culturable members of the barley microbiota and their plant growth-promoting potential. From this we retrieved strains belonging to the dominant phyla of the plant microbiota— Actinobacteria, Bacteroidetes, Firmicutes and Proteobacteria—and gathered evidence they code for functional genes implicated in nitrogen fixation, hydrogen cyanide channels and phosphate solubilisation. Here we present an initial comparative genomic analysis of the collection revealing that plant growth-promoting potential of the culturable barley bacterial microbiota appears to have a relatively broad phylogenetic base while retaining some strain-specificity.

scholarly journals Identification of Plant Growth Promoting Rhizobacteria That Improve the Performance of Greenhouse-Grown Petunias under Low Fertility Conditions

Plants ◽  
2021 ◽  
Vol 10 (7) ◽  
pp. 1410
Author(s):  
Kaylee A. South ◽  
Nathan P. Nordstedt ◽  
Michelle L. Jones
Keyword(s):  
Plant Growth ◽  
Growth Promotion ◽  
Genomic Analysis ◽  
Dry Weight ◽  
Plant Growth Promoting Rhizobacteria ◽  
Low Fertility ◽  
Plant Performance ◽  
Flower Bud ◽  
Plant Growth Promoting ◽  
Growth Promoting

The production of greenhouse ornamentals relies on high fertilizer inputs to meet scheduling deadlines and quality standards, but overfertilization has negative environmental impacts. The goals of this study were to identify plant-growth-promoting rhizobacteria (PGPR) that can improve greenhouse ornamental crop performance with reduced fertilizer inputs, and to identify the best measurements of plant performance for assessing the beneficial impact of PGPR on ornamentals. A high-throughput greenhouse trial was used to identify 14 PGPR isolates that improved the flower/bud number and shoot dry weight of Petunia × hybrida ‘Picobella Blue’ grown under low fertility conditions in peat-based media. These 14 PGPR were then applied to petunias grown under low fertility conditions (25 mg L−1 N). PGPR-treated plants were compared to negative (untreated at 25 mg L−1 N) and positive (untreated at 50, 75, 100, and 150 mg L−1 N) controls. Multiple parameters were measured in the categories of flowering, vegetative growth, and vegetative quality to determine the best measurements to assess improvements in ornamental plant performance. Caballeronia zhejiangensis C7B12-treated plants performed better in almost all parameters and were comparable to untreated plants fertilized with 50 mg L−1 N. Genomic analysis identified genes that were potentially involved in plant growth promotion. Our study identified potential PGPR that can be used as biostimulants to produce high-quality greenhouse ornamentals with lower fertilizer inputs.

scholarly journals Comparative Genomic Analysis of Delftia tsuruhatensis MTQ3 and the Identification of Functional NRPS Genes for Siderophore Production

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Haimeng Guo ◽  
Yanan Yang ◽  
Kai Liu ◽  
Wenfeng Xu ◽  
Jianyong Gao ◽  
...  
Keyword(s):  
Plant Growth ◽  
Genome Sequence ◽  
Genetic Relationships ◽  
Draft Genome ◽  
Genomic Analysis ◽  
Plant Growth Promoting Rhizobacteria ◽  
Siderophore Production ◽  
Comparative Genomic ◽  
Plant Growth Promoting ◽  
Delftia Tsuruhatensis

Plant growth-promoting rhizobacteria (PGPR) are a group of rhizosphere bacteria that promote plant growth. Delftia tsuruhatensis MTQ3 is a member of PGPR that produces siderophores. The draft genome sequence of MTQ3 has been reported. Here, we analyzed the genome sequence of MTQ3 and performed a comparative genome analysis of four sequenced Delftia strains, revealing genetic relationships among these strains. In addition, genes responsible for bacteriocin and nonribosomal peptide synthesis were detected in the genomes of each strain. To reveal the functions of NRPS genes in siderophore production in D. tsuruhatensis MTQ3, three NRPS genes were knocked out to obtain the three mutants MTQ3-Δ1941, MTQ3-Δ1945, and MTQ3-Δ1946, which were compared with the wild-type strain. In qualitative and quantitative analyses using CAS assay, the mutants failed to produce siderophores. Accordingly, the NRPS genes in MTQ3 were functionally related to siderophore production. These results clarify one mechanism by which plant growth is promoted in MTQ3 and have important applications in agricultural production.

Aplikasi Bacillus subtilis pada beberapa Bahan Organik terhadap Pertumbuhan dan Produksi Tanaman Cabai Rawit (Capsicum frutescens L.)

2020 ◽  
Vol 21 (1) ◽  
pp. 14-19
Author(s):  
Praptiningsih Gamawati Adinurani ◽  
Sri Rahayu ◽  
Nurul Fima Zahroh
Keyword(s):  
Bacillus Subtilis ◽  
Plant Growth ◽  
Plant Growth Promoting Rhizobacteria ◽  
Capsicum Frutescens ◽  
Plant Growth Promoting ◽  
Growth Promoting

Mikroba Bacillus subtilis merupakan agen pengendali hayati mempunyai kelebihan sebagai Plant Growth Promoting Rhizobacteria (PGPR) yaitu dapat berfungsi sebagai biofertilizer, biostimulan, biodekomposer dan bioprotektan. Tujuan penelitian mengetahui potensi B. subtilis dalam merombak bahan organik sebagai usaha meningkatkan ketersediaan bahan organik tanah yang semakin menurun. Penelitian menggunakan Rancangan Petak Terbagi dengan berbagai  bahan organik sebagai petak utama (B0 = tanpa bahan organik, B1 = kotoran ayam,  B2 = kotoran kambing, B3 = kotoran sapi) dan aplikasi B.subtilis sebagai anak petak (A0 = 0 cc/L, A1 = 5cc/L, A2 = 10 cc/L, Pengamatan meliputi variabel tinggi tanaman, indeks luas daun, jumlah buah per tanaman, berat buah per tanaman, dan bahan organik tanah. Data pengamatan  dianalisis ragam  menggunakan  Statistical Product and Service Solutions (SPSS) versi 25 dan dilanjutkan dengan uji Duncan untuk mengetahui signifikansi perbedaan antar perlakuan. Hasil penelitian menunjukkan tidak terdapat interaksi antara bahan organik kotoran ternak dan konsentrasi B. subtilis terhadap semua variabel pengamatan. Potensi B. subtilis sangat baik dalam mendekomposisi bahan organik yang ditunjukkan dengan peningkatan bahan organik, dan hasil terbaik pada kotoran  sapi (B3) dan konsentrasi B. subtilis 15 mL/L masing-masing sebesar 46.47 % dan 34.76 %. Variabel pertumbuhan tidak berbeda nyata kecuali tinggi tanaman dengan pertambahan tinggi paling banyak pada pemberian kotoran kambing sebesar 170.69 %.

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