English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Background  Pre-harvest contamination of fruits and vegetables by  Salmonella  in fields is one of the causes of food-borne outbreaks. Natural openings like stomata, hydathodes and fruit cracks are known to serve as entry points. While there are reports indicating that  Salmonella  colonize and enter root through lateral root emerging area, further investigations regarding how the accessibility of  Salmonella  to lateral root is different from phyto-pathogenic bacteria, the efficacy of lateral root to facilitate entry have remained unexplored. In this study we attempted to investigate the lateral root mediated entry of  Salmonella , and to bridge this gap in knowledge.    Results  Unlike phytopathogens,  Salmonella  cannot utilize cellulose as the sole carbon source. This negates the fact of active entry by degrading plant cellulose and pectin. Endophytic  Salmonella  colonization showed a high correlation with number of lateral roots. When given equal opportunity to colonize the plants with high or low lateral roots,  Salmonella  internalization was found higher in the plants with more lateral roots. However, the epiphytic colonization in both these plants remained unaltered. To understand the ecological significance, we induced lateral root production by increasing soil salinity which made the plants susceptible to  Salmonella  invasion and the plants showed higher  Salmonella  burden in the aerial organs.    Conclusion   Salmonella , being unable to degrade plant cell wall material relies heavily on natural openings. Therefore, its invasion is highly dependent on the number of lateral roots which provides an entry point because of the epidermis remodeling. Thus, when number of lateral root was enhanced by increasing the soil salinity, plants became susceptible to  Salmonella  invasion in roots and its transmission to aerial organs.    Electronic supplementary material  The online version of this article (10.1186/s12870-018-1578-9) contains supplementary material, which is available to authorized users.

Root mediated uptake of Salmonella is different from phyto-pathogen and associated with the colonization of edible organs