There are citrus Huanglongbing,Tristeza,Exocortis and Tatter-leaf of the graft-trans-missible diseases occurred in the citrus-producing areas in Fujian.
A candidate gene could be selected because of its' biological association with some disease or being congenerous to a known gene related to the disease.
By comparing the DNA of Salmonella serovar Typhimurium DT104 with the known DNA code of another Salmonella strain, Hermans found new DNA fragments in DT104.
In this superradiance harmonics, the temporal width of harmonics is extremely short, the ratio of high harmonic fundamental wave is much higher than the known superradiance harmonics.
The special body plan of Yunnanozoon is almost identical to that of the living enteropneust hemichordate Balanoglossus,which suggests that the earlyCambrian creature is ancestral to the hemichordates.