Abstract
We have demonstrated that cryptochromes (cry) mediate blue light dependent photomorphogenetic responses in rice. But it remains unclear how blue light signals are transduced in rice.
To identify blue light signaling factors, we screened O. glumaepatula / Taichu-65 introgression lines, which were prepared by Kyushu University, for different phenotypes grown under blue light. Among them, IL113 showed deeper declination of second leaf under blue light than WT did, while Red, Far-red or White light did not induce any differences in phenotypes between IL113 and WT. Moreover, lengths of leaf sheaths in IL113 were as long as those in WT even under blue light. Therefore, it was suggested that IL113 was hyper sensitive to blue light for the leaf declination. We speculated that the substitution chromosomal segment on the long arm of chromosome 4 is related with blue light dependent declination of leaf, because any lines didn't exhibit deeper declination of leaf under blue light.
We analyzed the growing process of rice seedlings grown under blue light in IL113 and Taichu-65, using original monitoring system. We will report the growing process of these lines under blue light
