First report of Serratia marcescens associated with black rot of Citrus sinensis fruit, and evaluation of its biological control measures in Bangladesh

Hasan, Mohammed Faruk; Islam, Mohammed Asadul; Sikdar, Biswanath

doi:10.12688/f1000research.27657.2

Cited by 4 publications

(3 citation statements)

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“…This highly diverse genus grows in a variety of habitats including water, soil, plants, and humans. While some Serratia species, in particular Serratia marcescens are known to cause opportunistic infections in humans and plant diseases, other strains have gained attention due to their potential as plant growth-promoting bacteria (PGPB) ( Hasan et al, 2020 ; Soenens and Imperial, 2020 ). Serratia spp.…”

Section: Introductionmentioning

confidence: 99%

Serratia spp. as plant growth-promoting bacteria alleviating salinity, drought, and nutrient imbalance stresses

Kulkova,

Wróbel,

Dobrzyński

2024

Front. Microbiol.

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In agricultural environments, plants are often exposed to abiotic stresses including temperature extremes, salt stress, drought, and heavy metal soil contamination, which leads to significant economic losses worldwide. Especially salt stress and drought pose serious challenges since they induce ionic toxicity, osmotic stress, and oxidative stress in plants. A potential solution can be the application of bacteria of the Serratia spp. known to promote plant growth under normal conditions Thus the mini-review aims to summarize the current knowledge on plant growth promotion by Serratia spp. (under the conditions of salinity stress, drought, and nutrient deficit) and highlight areas for development in the field. So far, it has been proven that Serratia spp. strains exhibit a variety of traits contributing to enhanced plant growth and stress tolerance, such as phytohormone production, ACC deaminase activity, nitrogen fixation, P and Zn solubilization, antioxidant properties improvement, and modulation of gene expression. Nevertheless, further research on Serratia spp. is needed, especially on two subjects: elucidating its mechanisms of action on plants at the molecular level and the effects of Serratia spp. on the indigenous soil and plant microbiota and, particularly, the rhizosphere. In both cases, it is advisable to use omics techniques to gain in-depth insights into the issues. Additionally, some strains of Serratia spp. may be phytopathogens, therefore studies to rule out this possibility are recommended prior to field trials. It is believed that by improving said knowledge the potential of Serratia spp. to stimulate plant growth will increase and strains from the genus will serve as an eco-friendly biofertilizer in sustainable agriculture more often.

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Section: Introductionmentioning

confidence: 99%

Serratia spp. as plant growth-promoting bacteria alleviating salinity, drought, and nutrient imbalance stresses

Kulkova,

Wróbel,

Dobrzyński

2024

Front. Microbiol.

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“…Gram-negative species contain an extra outer membrane which make them more resistant to a variety of antibiotics (Breijyeh et al, 2020). For example, Serratia marcescens (Class: Gammaproteobacteria) is a gram-negative pathogen which causes black rot in citrus and other agricultural disease (Hasan et. al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Silver Armor Against Bacteria: A Battle of Antimicrobial Effectiveness

Zaidi

2024

Preprint

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For many farmers, there is a need to improve crop resistance to pathogenic organisms. Florida’s climate and hurricane-prone location promotes the spread of many crop pathogens making management difficult and expensive. Therefore, this study evaluates using a Do-It-Yourself, DIY, method to produce colloidal silver solutions that may be used as effective inhibitors of bacteria growth. The efficacy was compared across gram-negative and gram-positive bacteria species. Production of colloidal silver used an electric current from eight 9-volt batteries wired in series. The starting silver was a jewelry chain, approx. 98% silver, suspended in a container of distilled water. Treatment effects were compared to a commercially available silver solution (10K, ppm) as the positive controlviathe Kirby-Baur method. Each petri dish was divided into four quadrants, into which each had a treated cellulose square impregnated with a treatment solution. Treatments were: T1-10K ppm AgNp; T-2-5ppm AgNp, T3-3ppm AgNp; and positive control T4-blank water control. The dimensions of Zones of Clearance (ZOC) and the bacterial growth surrounding treated squares were analyzed. The experiment was replicated four times. Data analysis conducted using one-way ANOVA withpost hocseparation of means using the T test and Tukey’s HSD. The positive control solution was the most effective bactericide across all species, followed by Treatment-2 (5-ppm treatment), which caused ZOC in gram-negative species. Treatment-3, the 3ppm, did not significantly affect bacterial suppression, while activity at 5ppm suggests that simple home-based, DIY systems can produce low cost, bactericidal nano-silver solutions. In this experiment the bacterium that tested that is also beneficial to plants,R. rubrum, showed an increased tolerance to all silver treatments. Improving homemade, DIY, systems may provide low-cost treatment solutions against some bacteria species important to backyard agriculturists.

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“…inducing black rot of sweet orange (Citrus sinensis L.) (Hasan et al, 2020), cucurbit yellow vine disease (CYVD) (Besler and Little, 2017), necrotic lesions on oleander (Nerium oleander L.) leaves (Fodor et al, 2022), bell pepper (Capsicum annuum L.) soft-rot (Gillis et al, 2014). On the other hand, some S. marcescens strains exhibit plant growth-promoting (PGP) properties (Matteoli et al, 2018;Abreo and Altier, 2019).…”

Section: Introductionmentioning

confidence: 99%

The man, the plant, and the insect: shooting host specificity determinants in Serratia marcescens pangenome

Shikov,

Merkushova,

Savina

et al. 2023

Front. Microbiol.

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IntroductionSerratia marcescens is most commonly known as an opportunistic pathogen causing nosocomial infections. It, however, was shown to infect a wide range of hosts apart from vertebrates such as insects or plants as well, being either pathogenic or growth-promoting for the latter. Despite being extensively studied in terms of virulence mechanisms during human infections, there has been little evidence of which factors determine S. marcescens host specificity. On that account, we analyzed S. marcescens pangenome to reveal possible specificity factors.MethodsWe selected 73 high-quality genome assemblies of complete level and reconstructed the respective pangenome and reference phylogeny based on core genes alignment. To find an optimal pipeline, we tested current pangenomic tools and obtained several phylogenetic inferences. The pangenome was rich in its accessory component and was considered open according to the Heaps’ law. We then applied the pangenome-wide associating method (pan-GWAS) and predicted positively associated gene clusters attributed to three host groups, namely, humans, insects, and plants.ResultsAccording to the results, significant factors relating to human infections included transcriptional regulators, lipoproteins, ABC transporters, and membrane proteins. Host preference toward insects, in its turn, was associated with diverse enzymes, such as hydrolases, isochorismatase, and N-acetyltransferase with the latter possibly exerting a neurotoxic effect. Finally, plant infection may be conducted through type VI secretion systems and modulation of plant cell wall synthesis. Interestingly, factors associated with plants also included putative growth-promoting proteins like enzymes performing xenobiotic degradation and releasing ammonium irons. We also identified overrepresented functional annotations within the sets of specificity factors and found that their functional characteristics fell into separate clusters, thus, implying that host adaptation is represented by diverse functional pathways. Finally, we found that mobile genetic elements bore specificity determinants. In particular, prophages were mainly associated with factors related to humans, while genetic islands-with insects and plants, respectively.DiscussionIn summary, functional enrichments coupled with pangenomic inferences allowed us to hypothesize that the respective host preference is carried out through distinct molecular mechanisms of virulence. To the best of our knowledge, the presented research is the first to identify specific genomic features of S. marcescens assemblies isolated from different hosts at the pangenomic level.

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First report of Serratia marcescens associated with black rot of Citrus sinensis fruit, and evaluation of its biological control measures in Bangladesh

Cited by 4 publications

References 26 publications

Serratia spp. as plant growth-promoting bacteria alleviating salinity, drought, and nutrient imbalance stresses

Serratia spp. as plant growth-promoting bacteria alleviating salinity, drought, and nutrient imbalance stresses

Silver Armor Against Bacteria: A Battle of Antimicrobial Effectiveness

The man, the plant, and the insect: shooting host specificity determinants in Serratia marcescens pangenome

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