Elevated Riboflavin Requirement for Postphotoinductive Events in Sporulation of a Trichoderma Auxotroph | Zendy

Benjamin A. Horwitz | Zendy; Jonathan Gressel | Zendy

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Elevated Riboflavin Requirement for Postphotoinductive Events in Sporulation of a Trichoderma Auxotroph

Author(s) -

Benjamin A. Horwitz,

Jonathan Gressel

Publication year - 1983

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.71.1.200

Subject(s) - conidiation , riboflavin , auxotrophy , flavin group , biochemistry , spore , chemistry , limiting , biology , microbiology and biotechnology , enzyme , mutant , gene , mechanical engineering , engineering

A riboflavin auxotroph of Trichoderma required more riboflavin for blue-light-induced conidiation than for growth. Colonies transferred after illumination from 0.2 micromolar (limiting conidiation, not growth) to 3.5 micromolar riboflavin (nonlimiting), responded the same as those grown at 3.5 micromolar. The additional riboflavin is therefore not required as a photoreceptor. The data do not rule out the hypothesis that cryptochrome(s) is/are flavin(s).

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