STRATEGY TO ENGINEER PHYTOCHROMES WITH IMPROVED ACTION IN CROP FIELDS

摘要

Disclosed herein are to isolated polynucleotide sequences encoding modified phytochrome polypeptides wherein the modified phytochrome polypeptide has at least one of an altered thermal reversion rate, an altered photoconversion rate, an altered absorption spectrum, or an altered signal output compared to the unmodified phytochrome polypeptide. Also disclosed are transgenic plants comprising said modified phytochrome polypeptides and methods of producing said transgenic plants.

主权项

1. An isolated polynucleotide encoding a modified phytochrome polypeptide comprising an amino acid sequence that is at least 80% identical to an unmodified phytochrome polypeptide and having at least one amino acid substitution at a position corresponding to position 104, 108, 284, 358, 401, 403, 563, 565, 584, or a combination thereof, of SEQ ID NO:1, the unmodified phytochrome polypeptide having an amino acid sequence selected from SEQ ID NOs: 1-26 or 67-92.