GrainGenes database update paper is published and it is available online.
Here are the ways you can reach the article (open access):
Journal site: https://academic.oup.com/database/article/doi/10.1093/database/baz065/55...
PubMed: https://www.ncbi.nlm.nih.gov/pubmed/31210272
Please cite us when you use GrainGenes:
Blake et al. GrainGenes: centralized small grain resources and digital platform for geneticists and breeders. Database (2019) Vol. 2019: article ID baz065; doi:10.1093/database/baz065