国家自然科学基金81072806;“十一五”国家科技重大专项2009ZX10005-016;广东省自然科学基金S2012010009277;National Natural Science Foundation of China81072806;Major Projects of the National Science and Technology during the ‘Eleventh Five-year’ Plan Period2009ZX10005-016;Natural Science Foundation of Guangdong ProvinceS2012010009277