The arbuscular mycorrhiza (AM) symbiosis is formed by a monophyletic group of fungi from the phylum Glomeromycota and the roots of 70–90% of land plant species. AM fungi are considered to be 'living ...

Investopedia contributors come from a range of backgrounds, and over 25 years there have been thousands of expert writers and editors who have contributed. Erika Rasure is globally-recognized as a ...

Morningstar Quantitative Ratings for Stocks are generated using an algorithm that compares companies that are not under analyst coverage to peer companies that do receive analyst-driven ratings.