Host and Non-Host Plant Response to Bacterial Wilt in Potato: Role of the Lipopolysaccharide Isolated fromRalstonia solanacearumand Molecular Analysis of Plant-Pathogen Interaction

2008 ◽  
Vol 5 (12) ◽  
pp. 2662-2675 ◽  
Author(s):  
Nunzio Esposito ◽  
Olga G. Ovchinnikova ◽  
Amalia Barone ◽  
Astolfo Zoina ◽  
Otto Holst ◽  
...  
Keyword(s):  
Host Plant ◽  
Molecular Analysis ◽  
Plant Pathogen ◽  
Bacterial Wilt ◽  
Plant Response ◽  
Plant Pathogen Interaction

scholarly journals Arabidopsis thaliana: A model host plant to study plant-pathogen interaction using Chilean field isolates of Botrytis cinerea

2006 ◽  
Vol 39 (2) ◽  
Author(s):  
JUAN GONZÁLEZ ◽  
FRANCISCA REYES ◽  
CARLOS SALAS ◽  
MARGARITA SANTIAG ◽  
YAEL CODRIANSKY ◽  
...  
Keyword(s):  
Arabidopsis Thaliana ◽  
Host Plant ◽  
Botrytis Cinerea ◽  
Plant Pathogen ◽  
Field Isolates ◽  
Plant Pathogen Interaction

Adaptation in an insect host-plant pathogen interaction

2004 ◽  
Vol 7 (8) ◽  
pp. 632-639 ◽  
Author(s):  
Jenny S. Cory ◽  
Judith H. Myers
Keyword(s):  
Host Plant ◽  
Plant Pathogen ◽  
Insect Host ◽  
Plant Pathogen Interaction

scholarly journals Different Sequevars of Ralstonia pseudosolanacearum Causing Bacterial Wilt of Bidens pilosa in China

Plant Disease ◽  
2020 ◽  
Vol 104 (11) ◽  
pp. 2768-2773
Author(s):  
Yonglin He ◽  
Yixue Mo ◽  
Dehong Zheng ◽  
Qiqin Li ◽  
Wei Lin ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Bacterial Wilt ◽  
Geographical Origin ◽  
Bidens Pilosa ◽  
Invasive Weed ◽  
High Virulence ◽  
Race 1 ◽  
Ralstonia Pseudosolanacearum ◽  
Phylotype I

Bidens pilosa is an invasive weed that threatens the growth of crops and biodiversity in China. In 2017, suspected bacterial wilt of B. pilosa was discovered in Qinzhou and Beihai, Guangxi, China. A variety of weeds are considered as reservoirs harboring bacterial wilt pathogens, but most do not show obvious symptoms in the field. Identifying the classification status of the B. pilosa bacterial wilt pathogen and exploring its geographical origin might be helpful for clarifying the role of weeds in the circulation of the disease. Phylotyping, sequevar analysis, and cross inoculation of pathogens isolated from B. pilosa and nearby peanut (Arachis hypogaea), balsam gourd (Momordica charantia), and eucalyptus (Eucalyptus robusta) plants were carried out. Three isolates of B. pilosa (Bp01, Bp02, and Bp03) were identified as Ralstonia pseudosolanacearum, race 1, biovar 3, and phylotype I, and belonged to sequevars 17 and 44, and an unknown sequevar. The sequevars isolated from B. pilosa were not completely consistent with those of the nearby hosts, and the virulence of these isolates differed when cross inoculated. The Bp03 sequevar was different from peanut isolate sequevars in the same field and was not identical to any previously designated sequevars. The isolates from B. pilosa and other nearby hosts displayed low or no virulence toward their cross hosts (with wilt incidences less than 33.33%). An exception to this was the isolates from B. pilosa, which displayed high virulence toward eucalyptus (with a wilt incidence of 70.00 to 100.00%). This is the first report of different sequevars of R. pseudosolanacearum causing typical bacterial wilt symptoms in B. pilosa in the field.

scholarly journals Plant SWEETs: from sugar transport to plant–pathogen interaction and more unexpected physiological roles

2021 ◽  
Author(s):  
Richard Breia ◽  
Artur Conde ◽  
Hélder Badim ◽  
Ana Margarida Fortes ◽  
Hernâni Gerós ◽  
...  
Keyword(s):  
Plant Pathogen ◽  
Sugar Transport ◽  
High Capacity ◽  
Phloem Loading ◽  
Transcription Activator ◽  
Pythium Irregulare ◽  
Clear Cut ◽  
Opposite Behavior ◽  
Plant Pathogen Interaction ◽  
Plant Pathogen Interactions

Abstract Sugars Will Eventually be Exported Transporters (SWEETs) have important roles in numerous physiological mechanisms where sugar efflux is critical, including phloem loading, nectar secretion, seed nutrient filling, among other less expected functions. They mediate low affinity and high capacity transport, and in angiosperms this family is composed by 20 paralogs on average. As SWEETs facilitate the efflux of sugars, they are highly susceptible to hijacking by pathogens, making them central players in plant–pathogen interaction. For instance, several species from the Xanthomonas genus are able to upregulate the transcription of SWEET transporters in rice (Oryza sativa), upon the secretion of transcription-activator-like effectors. Other pathogens, such as Botrytis cinerea or Erysiphe necator, are also capable of increasing SWEET expression. However, the opposite behavior has been observed in some cases, as overexpression of the tonoplast AtSWEET2 during Pythium irregulare infection restricted sugar availability to the pathogen, rendering plants more resistant. Therefore, a clear-cut role for SWEET transporters during plant–pathogen interactions has so far been difficult to define, as the metabolic signatures and their regulatory nodes, which decide the susceptibility or resistance responses, remain poorly understood. This fuels the still ongoing scientific question: what roles can SWEETs play during plant–pathogen interaction? Likewise, the roles of SWEET transporters in response to abiotic stresses are little understood. Here, in addition to their relevance in biotic stress, we also provide a small glimpse of SWEETs importance during plant abiotic stress, and briefly debate their importance in the particular case of grapevine (Vitis vinifera) due to its socioeconomic impact.

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