Pectobacterium brasiliense 1692 Chemotactic Responses and the Role of Methyl-Accepting Chemotactic Proteins in Ecological Fitness

Tanui, Collins Kipngetich; Shyntum, Divine Yufetar; Sedibane, Precious K.; Bellieny-Rabelo, Daniel; Moleleki, Lucy N.

doi:10.3389/fpls.2021.650894

Cited by 5 publications

(2 citation statements)

References 37 publications

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“…On the other hand, symptomatic Pectobacterium ssp.-caused infections are always associated with a strong upregulation of the JA pathway, which does not prevent disease development [13,24,25,55,57]. Additionally, JA serves as a chemoattractant for P. brasiliense [58]. Furthermore, the increase in plant resistance to Pectobacterium species due to various treatments is associated with a shift in the JA-SA balance in favor of SA [41,[59][60][61].…”

Section: Discussionmentioning

confidence: 99%

A Switch from Latent to Typical Infection during Pectobacterium atrosepticum—Tobacco Interactions: Predicted and True Molecular Players

Tsers,

Parfirova,

Moruzhenkova

et al. 2023

IJMS

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Phytopathogenic microorganisms, being able to cause plant diseases, usually interact with hosts asymptomatically, resulting in the development of latent infections. Knowledge of the mechanisms that trigger a switch from latent to typical, symptomatic infection is of great importance from the perspectives of both fundamental science and disease management. No studies to date have compared, at the systemic molecular level, the physiological portraits of plants when different infection types (typical and latent) are developed. The only phytopathogenic bacterium for which latent infections were not only widely described but also at least fluently characterized at the molecular level is Pectobacterium atrosepticum (Pba). The present study aimed at the comparison of plant transcriptome responses during typical and latent infections caused by Pba in order to identify and then experimentally verify the key molecular players that act as switchers, turning peaceful plant-Pba coexistence into a typical infection. Based on RNA-Seq, we predicted plant cell wall-, secondary metabolism-, and phytohormone-related genes whose products contributed to the development of the disease or provided asymptomatic plant—Pba interactions. By treatment tests, we confirmed that a switch from latent to typical Pba-caused infection is determined by the plant susceptible responses mediated by the joint action of ethylene and jasmonates.

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Section: Discussionmentioning

confidence: 99%

A Switch from Latent to Typical Infection during Pectobacterium atrosepticum—Tobacco Interactions: Predicted and True Molecular Players

Tsers,

Parfirova,

Moruzhenkova

et al. 2023

IJMS

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“…P. brasiliense is the primary pathogenic factor contributing to the global prevalence of soft rot and blackleg diseases in potato tubers and stems. 4 These bacteria are known to produce large quantities of pectic enzymes, which break down pectin in plant cell walls, leading to cellular damage and collapse. P. brasiliense bacteria are present on plant surfaces and in soil, and they can enter plants through wounds or natural openings like lenticels.…”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of a Dipeptide with a Reduced Amount of Copper into Antifungal and Antibacterial Particles

Kaganovich,

Taha,

Zig

et al. 2024

Biomacromolecules

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With the growing concern over the environmental impact and health risks associated with conventional pesticides, there is a great need for developing safer and more sustainable alternatives. This study demonstrates the self-assembly of antimicrobial and antifungal spherical particles by a dipeptide utilizing a reduced amount of copper salt compared to the commonly employed formulation. The particles can be sprayed on a surface and form an antimicrobial coating. The effectiveness of the coating against the bacteria Pectobacterium brasiliense, a common pathogen affecting potato crops, was demonstrated, as the coating reduced the bacterial load by 7.3 log. Moreover, a comprehensive field trial was conducted, where the formulation was applied to potato seeds. Remarkably, it exhibited good efficacy against three prevalent potato pathogens (P. brasiliense, Pythium spp., and Spongospora subterranea) while demonstrating no phytotoxic effects on the potatoes. These findings highlight the tremendous potential of this formulation as a nonphytotoxic alternative to replace hazardous pesticides currently available in the market. ■ INTRODUCTIONCrop pathogens are a serious concern in the field of agriculture as they cause a threat to the productivity and quality of crop yields. These harmful microorganisms, such as bacteria, viruses, and fungi, can cause devastating diseases in various crops, leading to substantial economic losses and food security issues. 1 Notably, the most consumed crops�wheat, maize, potato, rice, and soybean�face losses ranging from 17 to 30% due to pathogens and pests. 2 Potato crop, being one of the most extensively cultivated crops, is highly susceptible to a range of pathogens that can result in significant loss of harvest. 1,3 Among the common pathogens that pose a severe threat to potatoes are Pectobacterium brasiliense, Pythium spp., and Spongospora subterranea. P. brasiliense is the primary pathogenic factor contributing to the global prevalence of soft rot and blackleg diseases in potato tubers and stems. 4 These bacteria are known to produce large quantities of pectic enzymes, which break down pectin in plant cell walls, leading to cellular damage and collapse. P. brasiliense bacteria are present on plant surfaces and in soil, and they can enter plants through wounds or natural openings like lenticels. 5 They remain in these locations until the environmental conditions�such as the presence of free water, oxygen availability, and appropriate temperature� become favorable to the development of diseases. 5 In addition to bacterial pathogens, fungi are commonly found in soil and water. One prevalent pathogenic fungus found in such an environment is Pythium spp. Once Pythium spp. infects a potato, it causes a condition known as "damping-off" in seedlings, where the young plants collapse and die before or shortly after emergence. In mature plants, Pythium spp. can cause root rot, leading to stunted growth, wilting, and eventual death. 6 Another damaging pathogen is S. subterranea, which causes a signifi...

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Plant cell walls: source of carbohydrate-based signals in plant-pathogen interactions

Molina,

Sánchez-Vallet,

Jordá

et al. 2024

Current Opinion in Plant Biology

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Pectobacterium brasiliense 1692 Chemotactic Responses and the Role of Methyl-Accepting Chemotactic Proteins in Ecological Fitness

Cited by 5 publications

References 37 publications

A Switch from Latent to Typical Infection during Pectobacterium atrosepticum—Tobacco Interactions: Predicted and True Molecular Players

A Switch from Latent to Typical Infection during Pectobacterium atrosepticum—Tobacco Interactions: Predicted and True Molecular Players

Self-Assembly of a Dipeptide with a Reduced Amount of Copper into Antifungal and Antibacterial Particles

Plant cell walls: source of carbohydrate-based signals in plant-pathogen interactions

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