Challenges and applications of volatile organic compounds monitoring technology in plant disease diagnosis

Gan, Zhaoming; Zhou, Qin’an; Zheng, Chengyu; Wang, Jun

doi:10.1016/j.bios.2023.115540

Cited by 26 publications

(9 citation statements)

References 68 publications

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“…Methodologies for the direct application of VOCs in agricultural fields and greenhouses are rarely explored and require further investigation. Only a few studies have tested the effect of VOCs on plant growth promotion and disease suppression under field conditions through soil-drench methods, spray applications, and seed treatments [ 51 , 52 , 53 , 54 ].…”

Section: Resultsmentioning

confidence: 99%

Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Rabiço,

Borelli,

Alnoch

et al. 2024

BioTech

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In response to the escalating demand for sustainable agricultural methodologies, the utilization of microbial volatile organic compounds (VOCs) as antagonists against phytopathogens has emerged as a viable eco-friendly alternative. Microbial volatiles exhibit rapid diffusion rates, facilitating prompt chemical interactions. Moreover, microorganisms possess the capacity to emit volatiles constitutively, as well as in response to biological interactions and environmental stimuli. In addition to volatile compounds, these bacteria demonstrate the ability to produce soluble metabolites with antifungal properties, such as APE Vf, pyoverdin, and fragin. In this study, we identified two Pseudomonas strains (BJa3 and MCal1) capable of inhibiting the in vitro mycelial growth of the phytopathogenic fungus Aspergillus flavus, which serves as the causal agent of diseases in sugarcane and maize. Utilizing GC/MS analysis, we detected 47 distinct VOCs which were produced by these bacterial strains. Notably, certain volatile compounds, including 1-heptoxydecane and tridecan-2-one, emerged as primary candidates for inhibiting fungal growth. These compounds belong to essential chemical classes previously documented for their antifungal activity, while others represent novel molecules. Furthermore, examination via confocal microscopy unveiled significant morphological alterations, particularly in the cell wall, of mycelia exposed to VOCs emitted by both Pseudomonas species. These findings underscore the potential of the identified BJa3 and MCal1 Pseudomonas strains as promising agents for fungal biocontrol in agricultural crops.

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Section: Resultsmentioning

confidence: 99%

Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Rabiço,

Borelli,

Alnoch

et al. 2024

BioTech

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“…VOCs have the potential to stimulate microbial activity, attracting new beneficial microorganisms that support the process or providing a substrate for the increase of bacterial biomass (Liu et al 2023). Furthermore, VOCs can reduce plant susceptibility to some diseases (Gan et al 2023).…”

Section: The Functional Potential Of the Rhizobiome In CD And Pb Phyt...mentioning

confidence: 99%

Pollution pressure drives microbial assemblages that improve the phytoremediation potential of heavy metals by Ricinus communis

Rubio-Noguez,

Breton-Deval,

Salinas-Peralta

et al. 2024

Preprint

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Due to the rapid expansion of industrial activity, soil pollution has intensified. Plants growing in these polluted areas have developed a rhizobiome uniquely and specially adapted to thrive in such environments. However, it remains uncertain whether pollution acts as a sufficiently selective force to shape the rhizobiome, and whether these adaptations endure over time, potentially aiding in long-term phytoremediation. Therefore, in the present study, we aimed to compare whether the microbiome associated with roots from plants germinated in polluted riverbanks will improve the phytoremediation of Cd and Pb under mesocosm experiments compared with plants germinating in a greenhouse. The experimental design was a factorial 2 x 2, i.e., the origin of the plant and the presence or absence of 100 mg/L of Cd and 1000 mg/L of Pb. Our results showed that plants germinated in polluted riverbanks have the capacity to accumulate twice the amount of Pb and Cd during mesocosm experiments. The metagenomic analysis showed that plants from the river exposed to heavy metals at the end of mesocosm experiments were rich in Rhizobium_sp_AC44_96 and Enterobacter sp. EA_1, Enterobacter soli, Pantoea rwandensis, Pantoea endophytica. In addition, those plants were uniquely associated with Rhizobium grahamii, which likely contributed to the differences in the levels of phytoremediation achieved. Furthermore, the functional analysis revealed an augmented functional potential related to hormones, metallothioneins, dismutases, and reductases; meanwhile, the plants germinated in the greenhouse showed an unspecific strategy to exceed heavy metal stress. In conclusion, pollution pressure drives microbial assemblages that improve the phytoremediation process.

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“…Unlike GC-MS, the electronic nose captures overall information about the VOCs, generating “fingerprint data” instead of qualitative and quantitative results for the measured sample. This acquired data is then trained to differentiate between various VOCs features in the sample’s headspace through appropriate tuning ( Gan et al., 2023 ).…”

Section: Application Of Flexible Wearable Sensor In Crop Monitoringmentioning

confidence: 99%

Flexible wearable sensors for crop monitoring: a review

Yan,

Zhang,

Wang

et al. 2024

Front. Plant Sci.

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Crops were the main source of human food, which have met the increasingly diversified demand of consumers. Sensors were used to monitor crop phenotypes and environmental information in real time, which will provide a theoretical reference for optimizing crop growth environment, resisting biotic and abiotic stresses, and improve crop yield. Compared with non-contact monitoring methods such as optical imaging and remote sensing, wearable sensing technology had higher time and spatial resolution. However, the existing crop sensors were mainly rigid mechanical structures, which were easy to cause damage to crop organs, and there were still challenges in terms of accuracy and biosafety. Emerging flexible sensors had attracted wide attention in the field of crop phenotype monitoring due to their excellent mechanical properties and biocompatibility. The article introduced the key technologies involved in the preparation of flexible wearable sensors from the aspects of flexible preparation materials and advanced preparation processes. The monitoring function of flexible sensors in crop growth was highlighted, including the monitoring of crop nutrient, physiological, ecological and growth environment information. The monitoring principle, performance together with pros and cons of each sensor were analyzed. Furthermore, the future opportunities and challenges of flexible wearable devices in crop monitoring were discussed in detail from the aspects of new sensing theory, sensing materials, sensing structures, wireless power supply technology and agricultural sensor network, which will provide reference for smart agricultural management system based on crop flexible sensors, and realize efficient management of agricultural production and resources.

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Challenges and applications of volatile organic compounds monitoring technology in plant disease diagnosis

Cited by 26 publications

References 68 publications

Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Novel Pseudomonas Species Prevent the Growth of the Phytopathogenic Fungus Aspergillus flavus

Pollution pressure drives microbial assemblages that improve the phytoremediation potential of heavy metals by Ricinus communis

Flexible wearable sensors for crop monitoring: a review

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