The symbiotic relationship between arbuscular mycorrhizal fungi (AMF) and plants plays a vital role in enhancing nutrient uptake and overall plant health. Recent research has shed light on the intricate interactions within this symbiosis, particularly the involvement of mycorrhizal helper bacteria (MHB) as facilitators influencing the establishment and functioning of AMF associations. The synergistic interplay between MHB and AMF constitutes a dynamic and complex process that affects nutrient cycling and plant fitness. Understanding the molecular mechanisms controlling these interactions is essential for the fine-tuning of agricultural practices and the advancement of sustainable crop production. Additionally, MHB can be used in phytoremediation applications, thus reducing stress, and aiding beneficial outcomes.

This Research Topic aims to delve into the complex dynamics of MHB and their interactions within the AMF symbiosis. The primary goal is to address existing gaps in our understanding of these interactions and elucidate their implications for enhancing plant-microbe associations based on experimental data obtained and published in recent years. Recent advancements in molecular biology, genomics, and ecological studies have paved the way for a more comprehensive exploration of the roles played by MHB in facilitating and modulating AMF symbiosis. By revealing the underlying mechanisms governing these interactions, this Research Topic aims to offer useful information for optimizing agricultural practices for sustainable crop production.

Our research goal includes investigating key questions such as the identity of the bacterial species involved, the specificity of plant-microbe interactions, the molecular signaling pathways employed, and the ecological consequences of their interactions within the AMF symbiosis. By addressing these questions, we aim to provide valuable insights for fully harnessing the potential of MHB in promoting plant health and nutrient acquisition. Ultimately, this research endeavors to bridge the knowledge gaps in the field by providing the groundwork for more informed and effective strategies to augment plant-microbe interactions in agroecosystems.

The Research Topic explores the multifaceted interactions between MHB and AMF symbiosis, delving into their molecular complexities, ecological implications, and potential applications in agriculture and phytoremediation. We encourage researchers to submit articles pertaining to, but not limited to, the following topics:

- Implications of tripartite symbiosis for plant physiology and efficiency in mycorrhization

- Molecular mechanisms underlying the interaction between MHB, AMF, and plants

- Genome mining of MHB

- Application of MHB in phytoremediation

- MHB's contributions to biotic/abiotic stress alleviation in plants

- Application of MHB in agricultural practices

This Research Topic welcomes submissions of Original Research and Reviews.

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Frontiers in Plant Science

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