They inhibits the growth of fungi ( filamentous fungi especially ) while are non - toxic to plant cells . the main results were as follows : 1 . obtaining of spcema ( signal peptide modified cema ) spcema ( 187bp ) was amplified with two long complementary primers ( p2 and p3 ) and two primers ( pl and p4 ) containing restriction enzyme recognition site 带信号肽cema基因的pcr合成以两条部分重叠长链引物p _ 2和p _ 3延伸产物为模板， p _ 1和p _ 4为正、反引物进行pcr扩增，获得了改造的抗菌肽基因spcema ( 187bp ) 。
