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Bacillus subtilis and Its Effect on the Postharvest of Fruit and Flowers

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Bacilli and Agrobiotechnology: Phytostimulation and Biocontrol

Abstract

The ability of Bacillus subtilis to form heat-resistant spores and biofilms and its great capacity to produce bioactive metabolites on plants and other microorganisms have allowed it to be used in industry and agriculture. In this sense, it has been shown to help crops in different ways, as a biostimulant and as a biocontrol agent among others. The mode of application of B. subtilis and its effects have been diverse, from inoculations in the soil directed to its interaction with the root to application directly on foliage and fruits. Originally, these bacteria were only associated with the production of root growth, but there is now evidence that these rhizospheric bacteria can increase nutrition, physiological activity, and the overall health of plants. It has also been recognized that B. subtilis increases crop yield and improves plant tolerance to biotic and abiotic stress. Recent findings have revealed that the inoculation of agricultural crops with B. subtilis can improve the final quality of crop products, having a positive impact on attributes, such as size, firmness, and, therefore, shelf life. This impact may involve the activity of hormone-like substances that affect the growth of plants, the flowering and maturation of fruits, as well as the nutritional mechanisms and protection against pathogens. This document addresses the potential of the application of B. subtilis as a biofertilizer, a biocontrol agent, and a biostimulant focused mainly on improving the quality and shelf life of agricultural products (fruits and flowers) in the context of sustainable agricultural production.

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Rivera Chávez, F.H. et al. (2019). Bacillus subtilis and Its Effect on the Postharvest of Fruit and Flowers. In: Islam, M., Rahman, M., Pandey, P., Boehme, M., Haesaert, G. (eds) Bacilli and Agrobiotechnology: Phytostimulation and Biocontrol. Bacilli in Climate Resilient Agriculture and Bioprospecting. Springer, Cham. https://doi.org/10.1007/978-3-030-15175-1_4

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