|Budget Amount *help
¥110,370,000 (Direct Cost : ¥84,900,000、Indirect Cost : ¥25,470,000)
Fiscal Year 2013 : ¥21,320,000 (Direct Cost : ¥16,400,000、Indirect Cost : ¥4,920,000)
Fiscal Year 2012 : ¥21,320,000 (Direct Cost : ¥16,400,000、Indirect Cost : ¥4,920,000)
Fiscal Year 2011 : ¥21,320,000 (Direct Cost : ¥16,400,000、Indirect Cost : ¥4,920,000)
Fiscal Year 2010 : ¥24,570,000 (Direct Cost : ¥18,900,000、Indirect Cost : ¥5,670,000)
Fiscal Year 2009 : ¥21,840,000 (Direct Cost : ¥16,800,000、Indirect Cost : ¥5,040,000)
First, a novel calcium-binding protein calaxin has been shown to bind to the outer arm dynein in a calcium-dependent manner, resulting in suppression of the asymmetric flagellar waveform and in the chemotactic movement of sperm in the ascidian Ciona intestinalis. Second, the eusperm in the gastropod Strombus luhuanus has been shown to exhibit two types of backward swimming. One is to detach from sperm bundle and the other is to be released from the epithelium of female sperm receptacle. In both cases, extracellular calcium ion plays an critical role for switching to backward swimming. Third, by developing analytical systems for high-speed imaging and transgenic techniques, we have conducted many collaborating works in the research group, including allorecognition in the sperm-egg interaction in Ciona, sperm storage mechanism in quail, and regulation of flagellar movement of the zoospore in brown algae.