Specific Maceration and Induction of PR-3 Gene in Potato Tuber Tissue by Pectobacterium carotovorum subsp. Atrosepticum Type III Secretion System Mutants

2009 ◽  
Vol 12 (24) ◽  
pp. 1576-1580 ◽  
Author(s):  
Sohrab Aghabozorg ◽  
Mohammad Niakan
Keyword(s):  
Potato Tuber ◽  
Type Iii Secretion ◽  
Type Iii Secretion System ◽  
Secretion System ◽  
Pectobacterium Carotovorum ◽  
Tuber Tissue ◽  
Potato Tuber Tissue ◽  
Type Iii ◽  
Carotovorum Subsp

scholarly journals SlyA Regulates Type III Secretion System (T3SS) Genes in Parallel with the T3SS Master Regulator HrpL in Dickeya dadantii 3937

2012 ◽  
Vol 78 (8) ◽  
pp. 2888-2895 ◽  
Author(s):  
Lifang Zou ◽  
Quan Zeng ◽  
Haiping Lin ◽  
Prasad Gyaneshwar ◽  
Gongyou Chen ◽  
...  
Keyword(s):  
Hypersensitive Response ◽  
Type Iii Secretion ◽  
Type Iii Secretion System ◽  
Secretion System ◽  
Pectobacterium Carotovorum ◽  
Master Regulator ◽  
Pellicle Formation ◽  
Dickeya Dadantii ◽  
Content Type ◽  
Type Iii

ABSTRACTThe hypersensitive response and pathogenicity (hrp) genes ofDickeya dadantii3937 encode a type III secretion system (T3SS) which is essential for its full virulence. Previous studies of the T3SS regulation inD. dadantii3937 revealed that the expression of thehrpgenes is regulated by a master regulator, HrpL, through the HrpX-HrpY-HrpS-HrpL and GacS-GacA-rsmB-RsmA pathways. In this work, we identified a novel regulator of the SlyA/MarR family, SlyA, which regulateshrpgenes of the HrpL regulon in parallel with HrpL inD. dadantii. SlyA regulates the T3SS in a two-tier manner. It negatively regulates the expression ofhrpLby downregulatinghrpSand upregulatingrsmA. Interestingly, concomitant with its downregulation of thehrpL, SlyA positively regulates the expression ofhrpAandhrpN, twohrpgenes located in the HrpL regulon. In contrast toPectobacterium carotovorum, the expression ofslyAis not controlled by ExpR and ExpI inD. dadantii3937. We further show that SlyA is involved in controlling swimming motility and pellicle formation inD. dadantii3937.

Type III Secretion System–Associated Toxins, Proteases, Serotypes, and Antibiotic Resistance ofPseudomonas aeruginosaIsolates Associated with Keratitis

2006 ◽  
Vol 31 (4) ◽  
pp. 297-306 ◽  
Author(s):  
Hua Zhu ◽  
Tim C.R. Conibear ◽  
Rani Bandara ◽  
Yulina Aliwarga ◽  
Fiona Stapleton ◽  
...  
Keyword(s):  
Antibiotic Resistance ◽  
Type Iii Secretion ◽  
Type Iii Secretion System ◽  
Secretion System ◽  
Type Iii
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