Growth and pathogenicity characteristics of Ralstonia solanacearum strain RS1100 in long-term stationary phase culture
文献类型: 外文期刊
第一作者: Zhu, Y. -J.
作者: Zhu, Y. -J.;Xiao, R. -F.;Liu, B.
作者机构:
关键词: growth;pathogenicity;Ralstonia solanacearum;RS1100;stationary phase;viability
期刊名称:JOURNAL OF PLANT DISEASES AND PROTECTION ( 影响因子:1.928; 五年影响因子:1.652 )
ISSN: 1861-3829
年卷期: 2010 年 117 卷 4 期
页码:
收录情况: SCI
摘要: Nonsporulating gram-negative bacteria remain metabolically active and also develop increased resistance to a variety of environmental stresses after exponential growth has stopped and cells enter stationary phase. Ralstonia solanacearum is a nonsporulating gram-negative soil-borne pathogen that causes lethal wilt diseases of many plants around the world. Its growth and pathogenicity characteristics for entering long-term stationary phase were investigated by a prolonged 20-day laboratory culture. The data obtained from viability trial revealed that similar to 99% of R. solanacearum strain RS1100 (race 1) died at day 14 in SPA medium and then survivors maintained at similar to 10(5) cfu ml(-1) until the 20(th) day. Binary fission was observed and two modes of death procedures were assumed for growth of R. solanacearum under transmission electronic microscope, nucleoid condensation or nucleoid fragmentation and cytolysis. The latent period for R. solanacearum causing plant wilt prolonged while the cell density reduced gradually. The pathogen retained its aggressiveness at low density as 1.13 x 10(5) cfu ml(-1) at 20th day. Both mucoid and nonmucoid forms of R. solanacearum were coexistent throughout the experiment with varying ratio. The results here confirm that upon entering long-term stationary phase R. solanacearum can survive the stress conditions of nutrient starvation during prolonged stationary phase.
分类号:
- 相关文献
作者其他论文 更多>>
-
First Report of Apiospora arundinis Causing Wet Root Rot of Pseudostellaria heterophylla in China
作者:Xiao, R. F.;Chen, Y. P.;Liu, B.;Wang, J. P.;Cheng, X.;Gao, W. L.
关键词:Apiospora arundinis; identification; Pseudostellaria heterophylla; wet root rot
-
Chi@HMPB@CBD nanocomplexes for laser-assisted therapy of MRSA infected cutaneous wounds in normal and MKR diabetic mice
作者:Zhong, G.;Tong, C.;Fan, J.;Liu, B.;Liu, X.;Yu, R.;Xiong, X.;Chen, P.;Zhu, A.
关键词:Cannabidiol; Antibacterial; Photothermal effect; Wound infection; Diabetic wound
-
Water using source of a perennial semi-shrub Reaumuria soongorica as measured by water isotopes in Gobi Desert, Inner Mongolia, China
作者:Liu, R. X.;Ma, Y. M.;Liu, B.;Chen, S. C.;Mi, Y. J.;Hu, H. F.
关键词:Gobi desert; Isotopes; Reaumuria soongorica; Water content; Water potential; Water using sources
-
Annual analysis of field-evolved insecticide resistance in Bemisia tabaci across China
作者:Zheng, H.;Xie, W.;Fu, B.;Xiao, S.;Tan, X.;Ji, Y.;Cheng, J.;Yang, X.;Guo, Z.;Wang, S.;Wu, Q.;Xu, B.;Zhang, Y.;Zheng, H.;Fu, B.;Wang, R.;Liu, B.;Zhou, X.
关键词:Bemisia tabaci; resistance; insecticides; spirotetramat; cyantraniliprole
-
Application of a microbial consortium improves the growth of Camellia sinensis and influences the indigenous rhizosphere bacterial communities
作者:Shang, J.;Liu, B.
关键词:Camellia sinensis; microbial community composition; microbial consortium; molecular ecology network analysis; rhizobacteria
-
Overexpression ofwysRgene enhances wuyiencin production in Delta wysR3mutant strain ofStreptomyces albulusvar. wuyiensis strain CK-15
作者:Wei, Q.;Aung, A.;Liu, B.;Ma, J.;Shi, L.;Zhang, K.;Ge, B.;Aung, A.
关键词:biocontrol; Gibson assembly; overexpression; wuyiencin; wysR; Delta wysR3
-
Organic trace minerals improve eggshell quality by improving the eggshell ultrastructure of laying hens during the late laying period
作者:Qiu, J. L.;Zhou, Q.;Zhu, J. M.;Lu, X. T.;Liu, B.;Yu, D. Y.;Qiu, J. L.;Zhou, Q.;Zhu, J. M.;Lu, X. T.;Liu, B.;Yu, D. Y.;Lin, G.;Ao, T.;Xu, J. M.
关键词:organic trace mineral; performance; eggshell quality; serum index; laying hen