Crozier (mycology) Crozier (mycology) A crozier is an anatomical feature of many fungi in the phylum Ascomycota that form at the base of asci and look like hook-topped shepherd’s staffs or stylized religious crosiers. During the ascus initial formation the crozier helps to maintain a dikaryotic state in the ascus initial and its side branch that will continue the spreading growth of the ascogenous hyphae in Ascomycota fruitbodies. The tips of developing asci on these ascogenous hyphae curl over. One haploid nucleus migrates into the curved tip while the other compatible haploid nucleus remains in the penultimate space below the hook. The
International Union of Biochemistry and Molecular Biology International Union of Biochemistry and Molecular Biology The International Union of Biochemistry and Molecular Biology (IUBMB) is an international non-governmental organisation concerned with biochemistry and molecular biology. Formed in 1955 as the International Union of Biochemistry, the union has presently 77 member countries (as of 2008). IUBMB organizes a triennial Congress of Biochemistry and Molecular Biology, and sponsors more frequent conferences, symposia, educational activities and lectures. It publishes standards on biochemical nomenclature, including enzyme nomenclature, in some cases jointly with the International Union of Pure and Applied Chemistry (IUPAC). IUBMB has instituted the Wood Whelan Research fellowship scheme for budding