alg3、vps1301、rad51基因缺失对粟酒裂殖酵母接合生殖的影响

Effects of the deletions of alg3,vps1301 and rad51 genes on the growth and conjugal reproduction of Schizosaccharomyces pombe

为探寻alg3、vps1301、rad51基因缺失对粟酒裂殖酵母(Schizosaccharomyces pombe)生长及接合生殖的影响,在25℃条件下,培养野生型和3种基因缺失的粟酒裂殖酵母,统计并分析其生长情况;将野生型和3种基因缺失菌株分别各自交配产孢,分析对比野生型和基因缺失菌株的接合生殖情况.结果显示,生长实验中,25℃条件下,12 h内,野生型菌株、alg3Δ菌株、vps1301Δ菌株和rad51Δ菌株的平均生长速度分别为0.0425、0.0098、0.0193、0.0369 OD_(595)/h.结果提示,粟酒裂殖酵母缺失alg3基因后,其生长速度受影响最大.在细胞接合生殖实验中,3种基因缺失菌株产孢数目都出现异常,其中alg3Δ菌株产孢数与野生型表现出显著差异.同时,alg3基因和vps1301基因缺失后孢子长度与野生型存在极显著差异.结果表明,alg3基因缺失对粟酒裂殖酵母的接合生殖影响最大.综上所述,缺失上述3种基因都对粟酒裂殖酵母的生长和接合生殖有不同程度的影响,其中alg3基因缺失对其影响最严重,其次是vps1301基因,rad51基因对其影响最小.

In order to study the effects of deletion of alg3,vps1301 and rad51 genes on the growth and conjugal reproduction of Schizosaccharomyce spombe,under the condition of 25℃,the wild-type and three kinds of gene deleted strains were cultured,and their growth was counted and analyzed;the wild-type and three kinds of gene deleted strains were mated to produce spores respectively,and the conjugal reproduction of wild-type and gene deleted strains were also analyzed and compared.The results showed that the average growth rates of wild-type strain,alg3Δstrain,vps1301Δstrain and rad51Δstrain were 0.0425、0.0098、0.0193、0.0369 OD595/h at 25℃for 12 h,respectively.The results showed that the growth rate of S.pombe was most affected by the deletion of alg3 gene.In the experiment of cell conjugal reproduction,the number of spores produced by the three gene deletion strains were abnormal,and the number of spores produced by the alg3Δstrain was significantly different from that of the wild type.At the same time,there was a significant difference in spore length between the wild type and the alg3Δstrain and vps1301Δstrain.which indicated that the deletion of alg3 gene had the greatest effect on the conjugal reproduction of S.pombe.In conclusion,deletion of the above three genes had different effects on the growth and conjugal reproduction of S.pombe,among which the deletion of alg3 gene had the most serious effect,followed by vps1301 gene deletion,and rad51 gene deletion had the least effect.