scholarly journals Tumor Induction by Agrobacterium Involves Attachment of the Bacterium to a Site on the Host Plant Cell Wall

1977 ◽  
Vol 59 (3) ◽  
pp. 388-390 ◽  
Author(s):  
Barbara B. Lippincott ◽  
Mariamne H. Whatley ◽  
James A. Lippincott
Keyword(s):  
Cell Wall ◽  
Host Plant ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Tumor Induction ◽  
A Site

Influence of a crown-gall tumor initiation enhancer on bacterial attachment to the host plant cell wall

Planta ◽  
1982 ◽  
Vol 156 (4) ◽  
pp. 364-368 ◽  
Author(s):  
A. -M. Bouckaert-Urban ◽  
G. Brouwers ◽  
L. Thoelen ◽  
J. C. Vendrig
Keyword(s):  
Cell Wall ◽  
Host Plant ◽  
Plant Cell ◽  
Crown Gall ◽  
Plant Cell Wall ◽  
Bacterial Attachment ◽  
Tumor Initiation ◽  
Crown Gall Tumor

scholarly journals Hfq, a RNA Chaperone, Contributes to Virulence by Regulating Plant Cell Wall–Degrading Enzyme Production, Type VI Secretion System Expression, Bacterial Competition, and Suppressing Host Defense Response in Pectobacterium carotovorum

2018 ◽  
Vol 31 (11) ◽  
pp. 1166-1178 ◽  
Author(s):  
Chunting Wang ◽  
Tianxin Pu ◽  
Wangying Lou ◽  
Yujie Wang ◽  
Zishu Gao ◽  
...  
Keyword(s):  
Cell Wall ◽  
Host Plant ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Secretion System ◽  
Pectobacterium Carotovorum ◽  
Type Vi Secretion System ◽  
Degrading Enzyme ◽  
Bacterial Competition ◽  
Type Vi Secretion

Hfq is a RNA chaperone and participates in a wide range of cellular processes and pathways. In this study, mutation of hfq gene from Pectobacterium carotovorum subsp. carotovorum PccS1 led to significantly reduced virulence and plant cell wall–degrading enzyme (PCWDE) activities. In addition, the mutant exhibited decreased biofilm formation and motility and greatly attenuated carbapenem production as well as secretion of hemolysin coregulated protein (Hcp) as compared with wild-type strain PccS1. Moreover, a higher level of callose deposition was induced in Nicotiana benthamiana leaves when infiltrated with the mutant. A total of 26 small (s)RNA deletion mutants were obtained among a predicted 27 sRNAs, and three mutants exhibited reduced virulence in the host plant. These results suggest that hfq plays a key role in Pectobacterium virulence by positively impacting PCWDE production, secretion of the type VI secretion system, bacterial competition, and suppression of host plant responses.

The plant cell wall as a site for molecular contacts in fungal pathogenesis

2016 ◽  
Vol 95 ◽  
pp. 44-49 ◽  
Author(s):  
Kazuhiro Toyoda ◽  
Sachiyo Yao ◽  
Mai Takagi ◽  
Maki Uchioki ◽  
Momiji Miki ◽  
...  
Keyword(s):  
Cell Wall ◽  
Plant Cell ◽  
Plant Cell Wall ◽  
Fungal Pathogenesis ◽  
A Site

Pseudospiropes sp., a fungal epiphyte on living stems of striped maple (Acer pensylvanicum)

1988 ◽  
Vol 66 (9) ◽  
pp. 1717-1722
Author(s):  
Hinrich Harries ◽  
Felix Bärlocher
Keyword(s):  
Cell Wall ◽  
Nova Scotia ◽  
Plant Cell ◽  
Pure Culture ◽  
Plant Cell Wall ◽  
Frequency Of Occurrence ◽  
Cell Wall Polymers ◽  
Fungal Hyphae ◽  
Lake Placid ◽  
A Site

The living stems of striped maple (Acer pensylvanicum L.) at two sites in Nova Scotia were found to be covered by a striking pattern of fungal hyphae belonging to Pseudospiropes sp. The fungus colonizes branches or seedlings during their first season, and the density of its coverage increases every year thereafter. The fungus was absent from striped maple at a site near Lake Placid, NY, and there is some evidence that its frequency of occurrence has declined elsewhere in the last few years. A pure culture of the fungus was unable to hydrolyze several plant cell wall polymers. It was able to use simple lipids, however, and its presence increased the erosion of the cutinized layer of striped maple stems. The fungus does not penetrate the stem surface, and its occurrence is not correlated with twig length or volume. It was absent from three sympatric maple species.

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