湖南农业科学
湖南農業科學
호남농업과학
HUNAN AGRICULTURAL SCIENCES
2014年
17期
1-3,6
,共4页
桑青枯雷尔氏菌MR111%II型分泌系统%gsp基因%序列分析
桑青枯雷爾氏菌MR111%II型分泌繫統%gsp基因%序列分析
상청고뢰이씨균MR111%II형분비계통%gsp기인%서렬분석
Ralstonia solanacearum MR 111%type II secretion system%gsp gene%sequence analysis
gsp I和gsp J两个蛋白可能参与青枯雷尔氏菌II型分泌系统周质复合体的形成。为进一步研究青枯雷尔氏菌基因间的互作,以桑青枯雷尔氏菌MR111为材料,对MR111的gsp I和gsp J基因进行了PCR扩增和测序,分别获得了gsp I基因(391 bp)和gsp J基因(567 bp)序列;序列编码蛋白均含典型的该类基因的功能性结构,N端均以疏水氨基酸亮氨酸(L)和丙氨酸(A)最多,具分泌型信号肽特性,与其他青枯雷尔氏菌的同源基因的一致性在94%以上;以gsp I和gsp J基因联合矩阵进行聚类分析,发现几种青枯雷尔氏菌基因聚合后,再与其他雷尔氏菌属基因相聚合。
gsp I和gsp J兩箇蛋白可能參與青枯雷爾氏菌II型分泌繫統週質複閤體的形成。為進一步研究青枯雷爾氏菌基因間的互作,以桑青枯雷爾氏菌MR111為材料,對MR111的gsp I和gsp J基因進行瞭PCR擴增和測序,分彆穫得瞭gsp I基因(391 bp)和gsp J基因(567 bp)序列;序列編碼蛋白均含典型的該類基因的功能性結構,N耑均以疏水氨基痠亮氨痠(L)和丙氨痠(A)最多,具分泌型信號肽特性,與其他青枯雷爾氏菌的同源基因的一緻性在94%以上;以gsp I和gsp J基因聯閤矩陣進行聚類分析,髮現幾種青枯雷爾氏菌基因聚閤後,再與其他雷爾氏菌屬基因相聚閤。
gsp I화gsp J량개단백가능삼여청고뢰이씨균II형분비계통주질복합체적형성。위진일보연구청고뢰이씨균기인간적호작,이상청고뢰이씨균MR111위재료,대MR111적gsp I화gsp J기인진행료PCR확증화측서,분별획득료gsp I기인(391 bp)화gsp J기인(567 bp)서렬;서렬편마단백균함전형적해류기인적공능성결구,N단균이소수안기산량안산(L)화병안산(A)최다,구분비형신호태특성,여기타청고뢰이씨균적동원기인적일치성재94%이상;이gsp I화gsp J기인연합구진진행취류분석,발현궤충청고뢰이씨균기인취합후,재여기타뢰이씨균속기인상취합。
The bacterial wilt ( Ralstonia solanacearum ) is one of the major diseases in mulberry. Two proteins gsp I and gsp J may be involved in the formation of periplasmic complex of Ralstonia solanacearum type II secretion system. The genes gsp I and gsp J of strain MR111 with 391 bp and 567 bp, respectively, have been obtained by PCR amplication and sequence. The sequence-encoded protein contains functional structures of this gene type with the secretory signal peptide composed mainly by leucine and alanine in the N-end of the two genes. The identity between these two genes and other homologous genes from R. solanacearum is both above 94%. The results of clustering analysis with gsp I and gsp J gene combined matrix show that all genes from R. solanacearum have been clustered in one branch, and then would be clustered with the genes from Ralstonia sp. and R. Pickettii in this study.