A new study from the University of California, Davis, has improved our understanding of how bacteria benefit plant growth. The study, published in the journal Nature Communications, found that bacteria produce a molecule called auxin, which helps plants to grow and develop.

Auxin is a plant hormone that is essential for many plant processes, including root growth, stem elongation, and leaf development. It is also involved in the regulation of plant defenses against pests and diseases.

The study found that bacteria produce auxin using a gene called iaaM. This gene is present in many different types of bacteria, including those that live in the soil and those that live on plant surfaces.

When bacteria produce auxin, it can help to promote plant growth and development. This is because auxin helps to regulate the expression of genes that are involved in these processes.

The study also found that bacteria that produce auxin can help to protect plants from pests and diseases. This is because auxin can help to induce the production of defense compounds in plants.

The findings of this study could have important implications for agriculture. By understanding how bacteria produce auxin, we may be able to develop new ways to improve plant growth and yields.

In addition, the study could also lead to the development of new biocontrol agents that can be used to protect plants from pests and diseases.