1. Key Laboratory of Ion Beam Bioengineering, Key Laboratory of Environmental Toxicology and Pollution Control, Technology of Anhui ProvinceHefei Institutes of Physical Science, Chinese Academy of Sciences Hefei Anhui 230031 P.R. China
2. University of Science and Technology of China Hefei 230026 P.R. China
3. State Key Laboratory of Plant Genomics, Institute of MicrobiologyChinese Academy of Sciences Beijing 100101 P.R. of China
4. Institute of ZoologyChinese Academy of Sciences Beijing 100101 P.R. China