National 863 projectNational High Technology Research and Development Program of China [2008AA10Z316]; Chinese Academy of SciencesChinese Academy of Sciences [KSCX2-YW-N-051]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [30901040, 30901041, 3092801, 30828025, 30771558]; Guangdong Project [2009B091300079]; K.-C. Wong Education Foundation of Hong Kong; NSFCNational Natural Science Foundation of China (NSFC) [30771558, 30528006, 30671517, 30700581, 0371038, 30928018]; Fund of Agricultural Science and Technology outcome application [2006GB24910468]; Foundation of Hunan ProvinceNatural Science Foundation of Hunan Province [2007FJ1003]; Texas AgriLife Research [H-8200]