Do plants pay attention? A possible phenomenological-empirical approach

Parise, André Geremia; Toledo, Gabriel Ricardo Aguilera de; Oliveira, Thiago Francisco de Carvalho; Souza, Gustavo Maia; Castiello, Umberto; Gagliano, Monica; Marder, Michael

doi:10.1016/j.pbiomolbio.2022.05.008

Cited by 15 publications

(23 citation statements)

References 132 publications

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“…Examples of such actions would be the delivery of information to distant modules and/or the achievement of a new physiological state (acclimatization) when the signs of attention in the electrome would not be detectable anymore. The transient behavior of plant attention, emphasized by Parise et al [ 45 ], was also observed in this study, where attention-related alterations in the electrome lasted for around 15 min. Therefore, this work corroborates the hypothesis of plant attention.…”

Section: Discussionsupporting

confidence: 84%

“…It has not gone unnoticed that after the stimuli, the electrome behaved in a manner that previous studies suggest to be a state of attention in plants [ 16 , 45 ]. According to the hypothesis developed by Parise et al [ 45 ], attention in plants is a disproportionate investment of energy in an activity or the perception of a stimulus or set of stimuli [ 46 ], and it could be observed through electromic analyses when there is a drop in the electrome complexity accompanied by an increase in the correlation of the signals and, likely, an increase in the energy of the electrome [ 45 ]. This is precisely what was observed here.…”

Section: Discussionmentioning

confidence: 75%

“…At the same time, there will necessarily be an increase in the correlation of the signals and a likely increase in their energy. This is what is called plant attention [ 45 ]. This state is not expected to last long, but only until the problem is solved, or the actions needed to face it are completed.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to the participation of electrical and hydraulic signals, associated with the responses in a variation of turgor pressure and ROS analyzed here, we do not rule out other systemic signals such as nitric oxide (NO), RNAs, hormones, and volatile organic compounds (VOCs) [ 68 , 69 , 70 , 71 ], acting together and helping to activate systemic responses. Indeed, a mix of systemic signals is supposed to coordinate a complex network of internal communication integrating stress responses throughout the whole plant [ 4 , 5 , 6 ], which could also be related to a state of attention in bean plants when perceiving and processing the stimuli [ 45 , 46 ].…”

Section: Discussionmentioning

confidence: 99%

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Systemic Signals Induced by Single and Combined Abiotic Stimuli in Common Bean Plants

Costa

Oliveira

Posso

et al. 2023

Plants

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To survive in a dynamic environment growing fixed to the ground, plants have developed mechanisms for monitoring and perceiving the environment. When a stimulus is perceived, a series of signals are induced and can propagate away from the stimulated site. Three distinct types of systemic signaling exist, i.e., (i) electrical, (ii) hydraulic, and (iii) chemical, which differ not only in their nature but also in their propagation speed. Naturally, plants suffer influences from two or more stimuli (biotic and/or abiotic). Stimuli combination can promote the activation of new signaling mechanisms that are explicitly activated, as well as the emergence of a new response. This study evaluated the behavior of electrical (electrome) and hydraulic signals after applying simple and combined stimuli in common bean plants. We used simple and mixed stimuli applications to identify biochemical responses and extract information from the electrical and hydraulic patterns. Time series analysis, comparing the conditions before and after the stimuli and the oxidative responses at local and systemic levels, detected changes in electrome and hydraulic signal profiles. Changes in electrome are different between types of stimulation, including their combination, and systemic changes in hydraulic and oxidative dynamics accompany these electrical signals.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 75%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Systemic Signals Induced by Single and Combined Abiotic Stimuli in Common Bean Plants

Costa

Oliveira

Posso

et al. 2023

Plants

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“…We found classifiable differences in the electrome of tomato fruits during ripening [ 43 ], as well as systemic electrical signaling from fruits being chewed by caterpillars toward the rest of the aerial part of the plant (Reissig et al, 2021a). These changes in the electrome are likely associated with physiological and cognitive processes [ 11–13 ]. Broadly, the plant electrome is an epiphenomenon based on the general definition given by [ 44 ] as the totality of ionic currents of any living entity, from the cell up to whole-organism level.…”

mentioning

confidence: 99%

Approximate entropy: a promising tool to understand the hidden electrical activity of fruit

Reissig

Oliveira

Parise

et al. 2023

Communicative & Integrative Biology

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Fruits, like other parts of the plant, appear to have a rich electrical activity that may contain information. Here, we present data showing differences in the electrome complexity of tomato fruits through ripening and discuss possible physiological processes involved. The complexity of the signals, measured through approximate entropy, varied along the fruit ripening process. When analyzing the fruits individually, a decrease in entropy values was observed when they entered the breaker stage, followed by a tendency to increase again when they entered the light red stage. Consequently, the data obtained showed a decrease in signal complexity in the breaker stage, probably due to some physiological process that ends up predominating to the detriment of others. This result may be linked to processes involved in ripening, such as climacteric. Electrophysiological studies in the reproductive stage of the plant are still scarce, and research in this direction is of paramount importance to understand whether the electrical signals observed can transmit information from reproductive structures to other modules of plants. This work opens the possibility of studying the relationship between the electrical activity and fruit ripening through the analysis of approximate entropy. More studies are necessary to understand whether there is a correlation or a cause-response relationship in the phenomena involved. There is a myriad of possibilities for the applicability of this knowledge to different areas, from understanding the cognitive processes of plants to achieving more accurate and sustainable agriculture.

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Science fosters ongoing reassessments of plant capabilities

de Melo

2024

Theor. Exp. Plant Physiol.

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Do plants pay attention? A possible phenomenological-empirical approach

Cited by 15 publications

References 132 publications

Systemic Signals Induced by Single and Combined Abiotic Stimuli in Common Bean Plants

Systemic Signals Induced by Single and Combined Abiotic Stimuli in Common Bean Plants

Approximate entropy: a promising tool to understand the hidden electrical activity of fruit

Science fosters ongoing reassessments of plant capabilities

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