Biological Control of Fusarium oxysporum f. sp. cubense Tropical Race 4 Using Natively Isolated Bacillus spp. YN0904 and YN1419

文献类型： 外文期刊

第一作者： Fan, Huacai

作者： Fan, Huacai;Li, Shu;Zeng, Li;He, Ping;Xu, Shengtao;Bai, Tingting;Huang, Yuling;Guo, Zhixiang;Zheng, Si-Jun;Zheng, Si-Jun

作者机构：

关键词： Foc TR4; Bacillus amyloliquefaciens; B; subtillis; TR4-inhibitory; biocontrol; biocontrol mechanism

期刊名称：JOURNAL OF FUNGI （ 影响因子：5.816； 五年影响因子：6.499 ）

ISSN：

年卷期： 2021 年 7 卷 10 期

页码：

收录情况： SCI

摘要： Fusarium wilt of banana (FWB) is the main threatening factor for banana production worldwide. To explore bacterial biocontrol resources for FWB, the antagonistic effective strains were isolated from banana-producing areas in Yunnan Province, China. Two isolates (YN0904 and YN1419) displaying strong antagonism against Tropical Race 4 (TR4) were identified from a total of 813 strains of endophytic bacteria. TR4 inhibition rates of YN0904 and YN1419 were 79.6% and 81.3%, respectively. By looking at morphological, molecular, physiological and biochemical characteristics, YN0904 was identified as Bacillus amyloliquefaciens, while YN1419 was identified as B. subtillis. The control effects of YN0904 and YN1419 on TR4 in greenhouse experiments were 82.6% and 85.6%, respectively. Furthermore, YN0904 obviously promoted the growth of banana plantlets. In addition, biocontrol marker genes related to the biosynthesis of antibiotics synthesized and auxin key synthetase genes could be detected in YN0904. Surprisingly, the marker gene sboA could be exclusively detected in YN1419, while other marker genes were all absent. Molecular characterization results could provide a theoretical basis for expounding the biocontrol mechanisms of these two strains. We concluded that natively antagonistic strains derived from local banana plantations could provide new biological control resources for FWB.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序