Растительно-микробные взаимодействия с участием Quorum sensing регуляции

Зайцева, Ю. В.; Sidorov, Andrey V.; Маракаев, О. А.; Khmel, I. A.

doi:10.1134/s002636561904013x

Cited by 1 publication

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“…Unicellular organisms are capable of sensing and processing the metabolic activities of their conspecifics and use them to learn about the current status of the population [7]. For instance, many unicellular organisms, including prokaryotes and eukaryotes, can obtain information about their surroundings using a process called quorum sensing [8][9][10]. Quorum sensing involves the production, release and perception of signalling molecules often referred as autoinducers and is implicated in many group activities, including aggregation, swarming, bioluminescence, biofilm formation, secretion of virulence factors, sporulation, antibiotic production and extracellular digestion [9,11,12].…”

Section: Introductionmentioning

confidence: 99%

“…For instance, many unicellular organisms, including prokaryotes and eukaryotes, can obtain information about their surroundings using a process called quorum sensing [8][9][10]. Quorum sensing involves the production, release and perception of signalling molecules often referred as autoinducers and is implicated in many group activities, including aggregation, swarming, bioluminescence, biofilm formation, secretion of virulence factors, sporulation, antibiotic production and extracellular digestion [9,11,12]. Quorum sensing is considered to be a means of assessing local population density and its physiological state [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

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Stress signalling in acellular slime moulds and its detection by conspecifics

Briard

Goujarde

Bousquet

et al. 2020

Phil. Trans. R. Soc. B

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Unicellular organisms live in unpredictable environments. Therefore, they need to continuously assess environmental conditions and respond appropriately to survive and thrive. When subjected to rapid changes in their environment or to cellular damages, unicellular organisms such as bacteria exhibit strong physiological reactions called stress responses that can be sensed by conspecifics. The ability to detect and use stress-related cues released by conspecifics to acquire information about the environment constitutes an adaptive survival response by prompting the organism to avoid potential dangers. Here, we investigate stress signalling and its detection by conspecifics in a unicellular organism, Physarum polycephalum . Slime moulds were subjected to either biotic (i.e. nutritional) or abiotic (i.e. chemical and light) stressors or left undisturbed while they were exploring a homogeneous environment. Then, we observed the responses of slime moulds facing a choice between cues released by stressed clone mates and cues released by undisturbed ones. We found that slime moulds actively avoided environments previously explored by stressed clone mates. These results suggest that slime moulds, like bacteria or social amoeba, exhibit physiological responses to biotic and abiotic stresses that can be sensed by conspecifics. Our results establish slime moulds as a promising new model to investigate the use of social information in unicellular organisms. This article is part of the theme issue ‘Signal detection theory in recognition systems: from evolving models to experimental tests’.

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