To the Editor—Rapid advances in DNA-sequencing and bioinformatics technologies in the
past two decades have substantially improved understanding of the microbial world. This …

We present QIIME 2, an opensource microbiome data science platform accessible to users
spanning the microbiome research ecosystem, from scientists and engineers to clinicians …

Global Natural Product Social Molecular Networking (GNPS) is an interactive online small
molecule–focused tandem mass spectrometry (MS 2 ) data curation and analysis infrastructure…

Metabolomics has started to embrace computational approaches for chemical interpretation
of large data sets. Yet, metabolite annotation remains a key challenge. Recently, molecular …

The annotation of small molecules is one of the most challenging and important steps in
untargeted mass spectrometry analysis, as most of our biological interpretations rely on …

Molecular networking has become a key method to visualize and annotate the chemical space
in non-targeted mass spectrometry data. We present feature-based molecular networking …

Microorganisms are found everywhere, and they are closely associated with plants. Because
the establishment of any plant–microbe association involves chemical communication, …

To the Editor—We introduce a webenabled mass spectrometry (MS) search engine, named
Mass Spectrometry Search Tool (MASST; https://masst. ucsd. edu). By enabling searches of …

Bacteria of the genera Pseudomonas and Bacillus can promote plant growth and protect
plants from pathogens. However, the interactions between these plant-beneficial bacteria are …

Molecular networking connects mass spectra of molecules based on the similarity of their
fragmentation patterns. However, during ionization, molecules commonly form multiple ion …