必须全面了解不同菌株之间的遗传变异。citri(Xcc),导致柑橘细菌性溃疡的原因。这种认识对于研究疾病特征很重要,人口结构,和进化,并最终发展可持续的控制方法。2012年,2020年和2021年从布基纳法索柑橘产区获得的总共48个菌株使用特定引物进行了聚合酶链反应(PCR)测试。目的是检查3型效应子(T3E)的分布并确定菌株的地理起源。对3型非转录激活因子样效应子(TALE)分布的检查显示,2020年和2021年获得的菌株比2012年更广泛。然而,所有菌株都拥有一组共有的三个基因,具体来说,XopE2,XopN,和AvrBs2。此外,在Bobo-Dioulasso地区观察到所有检查的效应子.关于TALE的表征,发现了两个包含两到三个TALE的配置文件。配置文件1,由两个TALE组成,在37个Xcc菌株中发现,而配置文件2,包括三个TALE,在11个菌株中检测到。在三个TALE中(A,B,和C)被识别,TALEsB和C存在于所有菌株中。相关矩阵表明菌株的T3E含量与其分离的持续时间之间呈正相关。主成分分析显示所调查菌株的组织有限。
It is essential to have a thorough knowledge of the genetic variation among different strains of Xanthomonas citri pv. citri (Xcc), which is responsible for causing citrus bacterial canker. This understanding is important for studying disease characteristics, population structure, and evolution and ultimately for developing sustainable methods of control. A total of 48 strains obtained from citrus production areas in Burkina Faso in 2012, 2020, and 2021 were subjected to polymerase chain reaction (PCR) tests using specific primers. The aim was to examine the distribution of type 3 effectors (T3E) and determine the geographical origins of the strains. The examination of the distribution of type 3 non-transcription-activator-like effectors (TALEs) revealed a broader range of strains obtained in 2020 and 2021 than in 2012. However, all the strains possessed a shared set of three genes, specifically, XopE2, XopN, and AvrBs2. Furthermore, all examined effectors were observed in the Bobo-Dioulasso region. Regarding the characterization of TALEs, two profiles containing two to three TALEs were discovered. Profile 1, consisting of two TALEs, was found in 37 Xcc strains, whereas Profile 2, comprising three TALEs, was detected in 11 strains. Among the three TALEs (A, B, and C) that were identified, TALEs B and C were present in all the strains. The correlation matrix indicated a positive association between the T3E content of strains and the duration of their isolation. Principal component analysis revealed a limited organization of the strains under investigation.