A team from Peking University, CAS Kunming Institute of Botany and Frankfurt University introduced and overexpressed two algal enzymes which efficiently convert β-carotene to astaxanthin in tomato leading to hyperproduction of astaxanthin in the fruits.
Junchuao HUANG et al., Metabolic Engineering 2013 http://dx.doi.org/10.1016/j.ymben.2013.02.005
Chinese-German consortium develops astaxanthin-producing tomatoes using synthetic biology