Espécies de Ralstonia no Brasil : caracterização fenotípica, molecular, novas fontes de resistência em tomateiro e patogenicidade em cafeeiro

Rossato, Maurício

doi:10.26512/2016.10.t.22440

Cited by 1 publication

(2 citation statements)

References 128 publications

(175 reference statements)

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“…Although biofilms can act as a virulence factor during the early stages of colonization and infection in phytopathogenic bacteria (Flemming & Wingender, 2016; Guttenplan & Kearns, 2013), our study evaluated in vitro biofilm formation, aggressiveness and host range of the isolates. The outcomes of our study suggest that there is no direct correlation between biofilm formation in vitro and elevated levels of aggressiveness or a wide‐ranging virulence profile, which is consistent with the observations made by Rossato (2016). However, to establish this relationship accurately, it is necessary to consider this mechanism in planta.…”

Section: Discussionsupporting

confidence: 92%

“…Biofilm formation is an isolate‐specific characteristic in Ralstonia spp. and is influenced by environmental factors, including nutrient availability (Malafaia et al., 2018; Rossato, 2016). In general, Rsol isolates demonstrated a higher biofilm formation ability under all tested conditions, while not all Rpsol isolates formed biofilms in the Kelman medium.…”

Section: Discussionmentioning

confidence: 99%

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Exploring the competitive potential of Ralstonia pseudosolanacearum and Ralstonia solanacearum: Insights from a comparative adaptability study

Silva,

Johnson‐Silva,

Albuquerque

et al. 2023

Plant Pathology

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Bacterial wilt, caused by Ralstonia pseudosolanacearum (Rpsol) and R. solanacearum (Rsol), poses a significant challenge to solanaceous plant cultivation worldwide, particularly in tropical and subtropical regions. Even though Brazil is recognized as one of the centres of origin and diversity of Rsol, in certain regions of this large country there is an emerging prevalence of Rpsol in production fields. Therefore, this study aimed to comprehensively investigate the adaptive traits of Rpsol and Rsol using a polyphasic approach. A diverse collection of isolates from both species was assessed for their physiological, biochemical, ecological and pathogenic traits. Rsol isolates demonstrated greater adaptability to a broader range of temperature, salinity and pH. They also exhibited enhanced abilities in biofilm formation and bacteriocin production. Conversely, Rpsol isolates exhibited a broader utilization of carbon sources and displayed a wider spectrum of resistance to inhibitory substances. Moreover, they demonstrated higher infectivity towards different solanaceous hosts, showing a faster invasion and colonization process in the roots and stems of tomato plants compared to Rsol isolates. Based on our findings, we concluded that Rsol exhibited greater physiological and ecological adaptability, while Rpsol showed greater pathogenic and biochemical adaptability. These results suggest that the coexistence of both species is maintained through a balance of distinct traits within each species.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionmentioning

confidence: 99%