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Background <p>Plants have co-evolved with diverse associated microbiomes, including endophytic, which inhabit the internal tissues of healthy plants without causing any apparent harm. These microbiomes expand the genetic potential of plants, providing various benefits such as enhanced resilience to biotic and abiotic stresses, improved phytosanitary status, and promotion of plant growth. The genus <i>Pantoea</i> encompasses a wide diversity of species that have been isolated from various natural environments. Notably, <i>Pantoea</i> species have been reported to associate endophytically with different agronomically important plants, where they promote growth. The strain <i>Pantoea sp.</i> UYSB45, isolated from sweet sorghum (<i>Sorghum bicolor)</i> cultivar M81E, exhibits several plant growth-promoting traits, including ACC-deaminase activity, indole-acetic acid production, and the ability to solubilize phosphorus and iron. Additionally, it serves as a growth promoter for cultivar M81E.</p> Aims <p>To further characterize the interaction between strain UYSB45 and sweet sorghum cultivars.</p> Methodology <p>The approaches used included plant growth promotion evaluations in different sweet sorghum cultivars, microscopy, genome sequencing, and analysis.</p> Results <p>Strain UYSB45, identified as <i>Pantoea dispersa</i>, is a true endophyte that enhances sweet sorghum cultivars growth. Genome analysis revealed genes involved in plant-bacteria interactions and growth promotion. These findings suggest the strain's potential for biotechnological applications. This study advances understanding of the endophytic microbiome associated with sorghum plants, its role in promoting plant growth and health, and the underlying mechanisms.</p>

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Endophytic interaction of the plant growth-promoting strain Pantoea dispersa UYSB45 and sweet sorghum (Sorghum bicolor) plants

  • 期刊论文

  • 发表日期：

    2025年6月4日

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  • Cintia Mareque,
  • Federico Battistoni

摘要

Background

Plants have co-evolved with diverse associated microbiomes, including endophytic, which inhabit the internal tissues of healthy plants without causing any apparent harm. These microbiomes expand the genetic potential of plants, providing various benefits such as enhanced resilience to biotic and abiotic stresses, improved phytosanitary status, and promotion of plant growth. The genus Pantoea encompasses a wide diversity of species that have been isolated from various natural environments. Notably, Pantoea species have been reported to associate endophytically with different agronomically important plants, where they promote growth. The strain Pantoea sp. UYSB45, isolated from sweet sorghum (Sorghum bicolor) cultivar M81E, exhibits several plant growth-promoting traits, including ACC-deaminase activity, indole-acetic acid production, and the ability to solubilize phosphorus and iron. Additionally, it serves as a growth promoter for cultivar M81E.

Aims

To further characterize the interaction between strain UYSB45 and sweet sorghum cultivars.

Methodology

The approaches used included plant growth promotion evaluations in different sweet sorghum cultivars, microscopy, genome sequencing, and analysis.

Results

Strain UYSB45, identified as Pantoea dispersa, is a true endophyte that enhances sweet sorghum cultivars growth. Genome analysis revealed genes involved in plant-bacteria interactions and growth promotion. These findings suggest the strain's potential for biotechnological applications. This study advances understanding of the endophytic microbiome associated with sorghum plants, its role in promoting plant growth and health, and the underlying mechanisms.