Pea (Pisum sativum L.) is the second most important grain legume in the world after common bean and Gregor Mendel’s original genetic model. With a genome size of 4.3Gb and a large amount of transposable element, Pisum sativum was lagging behind other important legume crops for genomics development. We reported the first annotated chromosome-level reference genome assembly for pea (J. Kreplak et al 2019). Compared to other sequenced Leguminosae genomes, the pea genome shows intense gene dynamics, most likely associated with genome size expansion when the Fabeae diverged from it’s sister tribes. Other species like Vicia faba, with genome larger than pea, are still not sequenced and the sequence of pea is a valuable resources to have insight on gene conservation and tackle translational genomics approaches.