Yes, plants do have memory
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Yes, plants do have memory Yutcelia C. F. Galviz
. Rafael V. Ribeiro
. Gustavo M. Souza
Received: 27 May 2020 / Revised: 11 July 2020 / Accepted: 23 July 2020 Ó Brazilian Society of Plant Physiology 2020
Abstract It is time to recognize the existence of plant memory, a phenomenon that allows plants to store and recall information from previous events and then change their responses to future stressful conditions. Although many recent publications have addressed this topic and concluded about plant memory using either classical or advanced approaches, several scientists are still armored against this important concept inherent to life and found in plants. Herein, our aims are to clarify the concept of memory and its use in plants and to overview the mechanisms underlying plant memory. How do plants store information? Where is such information stored? How long can information be stored? How does memory affect the organization of a given system with such ability? These are some questions that deserve attention from the scientific community rather than inadequate and incoherent ones challenging the existence of plant
Y. C. F. Galviz G. M. Souza (&) Laboratory of Plant Cognition and Electrophysiology, Department of Botany, Institute of Biology, Federal University of Pelotas (UFPel), Capa˜o do Lea˜o, RS, Brazil e-mail: [email protected] R. V. Ribeiro (&) Laboratory of Crop Physiology (LCroP), Department of Plant Biology, Institute of Biology, University of Campinas (IB/UNICAMP), Campinas, SP, Brazil e-mail: [email protected]
memory. Let us move on to the next page and deal with plants as living beings. Keywords Acclimation Learning Mechanism Memory Priming
1 Introduction Despite abundant studies addressing several aspects of memory in plants, many plant scientists are still repellent to this subject and show a kind of prejudice. In the last 20 years, a quick search using the input words ‘‘plant memory’’ returns more than 800 documents in the Google Scholar database, including articles in indexed journals, books and book chapters, of which most texts were published between 2016 and 2019. As examples of such repellency, some papers from our research groups on plant memory have been submitted to publication in high quality journals and overwhelmingly criticized by some of the reviewers, which claimed that plant memory does not exist and kindly asked us to withdraw any mention about memory throughout the manuscript. Frequently, the reviewers’ argument is that ‘‘plants do not have a brain’’, which is a logical and correct argument IF we had indeed claimed such a thing. But we didn’t at all! Although there is already a consolidated literature conceptualizing and characterizing memory in plants
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(e.g. Thellier and Lu¨ttge 2013; Baluska et al. 2018; Michmizos and Hilioti 2019; Demongeot et al. 2019), we were urged to support the concept and applicability of memory as an actual biological phenomenon expressed by plants, instead of a
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