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Enterobacter hormaechei as Plant Growth-Promoting Bacteria for Improvement in Lycopersicum esculentum

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Abstract

Humans have been using natural resources for their daily life support. The population boom around the world has created a need to develop a new technique for increased crop production. Chemical fertilizers used in modern agriculture lead to pollution, besides increase in farming costs. To solve this problem, the present study deals with a natural halotolerant Enterobacter hormaechei which can fix N and solubilize desired macronutrients P and K. Enterobacter hormaechei was able to solubilize K-feldspar into potassium (97.5 ± 1.76 mg/L), tri-calcium phosphate into phosphate (99.7 ± 02 µg/mL) and it also produced IAA (47.87 ± 0.85 mg/L). Experiments, including morphological and chemical analysis, have provided a new growth pattern in Lycopersicum esculentum. Tomato seeds (Lycopersicum esculentum) treated with Enterobacter hormaechei enhanced biomass and an increase in shoot length when compared to control. It enhanced not only plant growth but modified the root architecture leading to improved crop productivity.

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Acknowledgements

CSIR-CSMCRI Communication No: 154/2017. The financial funding received from Council of Scientific and Industrial Research (CSIR), New Delhi, India (project K-TEN 0105) is thankfully acknowledged. The analytical department of CSIR-CSMCRI acknowledged for support and cooperation throughout the analysis of samples. Academy of Scientific & Innovative (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute is gratefully acknowledged.

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AS: Idea and conceptualization of experiment, data interpretation and critical analysis of the data, manuscript correction. BR: Experiment design, Experiment execution, writing manuscript, data analysis and interpretation. PB: Helped in experiment execution. SM: Critical suggestion and correction in manuscript.

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Correspondence to Aneesha Singh.

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Ranawat, B., Bachani, P., Singh, A. et al. Enterobacter hormaechei as Plant Growth-Promoting Bacteria for Improvement in Lycopersicum esculentum. Curr Microbiol 78, 1208–1217 (2021). https://doi.org/10.1007/s00284-021-02368-1

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