In contrast to vertical gene transfer from parent to offspring, horizontal (or lateral) gene transfer moves genetic information between different species. Bacteria and archaea often adapt through horizontal gene transfer. Recent analyses indicate that eukaryotic genomes, too, have acquired numerous genes via horizontal transfer from prokaryotes and other lineages. Based on this we raise the hypothesis that horizontally acquired genes may have contributed more to adaptive evolution of eukaryotes than previously assumed. Current candidate sets of horizontally acquired eukaryotic genes may (...) just be the tip of an iceberg. We have recently shown that adaptation of the thermoacidophilic red alga Galdieria sulphuraria to its hot, acid, toxic‐metal laden, volcanic environment was facilitated by the acquisition of numerous genes from extremophile bacteria and archaea. Other recently published examples of horizontal acquisitions involved in adaptation include ice‐binding proteins in marine algae, enzymes for carotenoid biosynthesis in aphids, and genes involved in fungal metabolism.Editor's suggested further reading in BioEssays Jumping the fine LINE between species: Horizontal transfer of transposable elements in animals catalyses genome evolution Abstract. (shrink)

What factors drove the transformation of the cyanobacterial progenitor of plastids (e.g. chloroplasts) from endosymbiont to bona fide organelle? This question lies at the heart of organelle genesis because, whereas intracellular endosymbionts are widespread in both unicellular and multicellular eukaryotes (e.g. rhizobial bacteria, Chlorella cells in ciliates, Buchnera in aphids), only two canonical eukaryotic organelles of endosymbiotic origin are recognized, the plastids of algae and plants and the mitochondrion. Emerging data on (1) the discovery of non‐canonical plastid protein targeting, (2) (...) the recent origin of a cyanobacterial‐derived organelle in the filose amoeba Paulinella chromatophora, and (3) the extraordinarily reduced genomes of psyllid bacterial endosymbionts begin to blur the distinction between endosymbiont and organelle. Here we discuss the use of these terms in light of new data in order to highlight the unique aspects of plastids and mitochondria and underscore their central role in eukaryotic evolution. BioEssays 29:1239–1246, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

Native and to some extent non-native speakers have shown processing advantages for idioms compared to novel literal phrases, and there is limited evidence that this advantage also extends to memory in L1 children. This study investigated whether these advantages generalize to recognition memory in adults. It employed a learning paradigm to test whether there is a recognition memory advantage for idioms compared to literal phrases in adult L1 and L2 learners considering both form and meaning recognition. Additionally, we asked whether (...) the presence of unfamiliar vocabulary interferes with phrasal learning by looking at recall of such unfamiliar words. When encountering new idioms, L2 learners often must cope with both figurative meaning and unfamiliar vocabulary. While single word meaning need not interfere with idiomatic meaning, it is a building block for the meaning of literal phrases. In Experiment 1, L2 learners showed equal recall for the form and meaning of literal and idiomatic phrases in which either all words were highly familiar, or one word was unfamiliar. However, unfamiliar words decreased overall recognition and were also remembered significantly better in literal compared to idiomatic phrases. In Experiment 2, L1 speakers also showed no recall differences between phrase types, but they displayed a trending increase in recognition in the presence of unfamiliar words. We conclude that there is no inherent recognition memory advantage for idioms based on figurativeness alone, and word- and phrasal meaning interact differently in learner groups. (shrink)

This paper proposes a basic revision of the understanding of teleology in biological sciences. Since Kant, it has become customary to view purposiveness in organisms as a bias added by the observer; the recent notion of teleonomy expresses well this as-if character of natural purposes. In recent developments in science, however, notions such as self-organization (or complex systems) and the autopoiesis viewpoint, have displaced emergence and circular self-production as central features of life. Contrary to an often superficial reading, Kant gives (...) a multi-faceted account of the living, and anticipates this modern reading of the organism, even introducing the term self-organization for the first time. Our re-reading of Kant in this light is strengthened by a group of philosophers of biology, with Hans Jonas as the central figure, who put back on center stage an organism-centered view of the living, an autonomous center of concern capable of providing an interior perspective. Thus, what is present in nuce in Kant, finds a convergent development from this current of philosophy of biology and the scientific ideas around autopoeisis, two independent but parallel developments culminating in the 1970s. Instead of viewing meaning or value as artifacts or illusions, both agree on a new understanding of a form of immanent teleology as truly biological features, inevitably intertwined with the self-establishment of an identity which is the living process. (shrink)

In this chapter I propose to understand the current paradigm shift in biology as the origination of a biology of subjects. A description of living beings as experiencing selves has the potential to transform the current mechanistic approach of biology into an embodied-hermeneutic one, culminating in a poetics of nature. We are at the right moment for that: The findings of complex systems research, autopoiesis theory, and evolutionary developmental biology are converging into a picture where the living can not longer (...) be described in terms of causal mechanisms (as is, e. g., the Watson-Crick “central dogma”). Instead, organisms bring forth themselves physically and thereby generate a hermeneutic standpoint, interpreting external and internal stimuli interfering with their auto-creation according to embodied values. This can be observed empirically during embryonic develoment, where genetic instructions do not act as orders, but rather as perturbations being interpreted by an auto-maintaining developmental centre. The notion of organic subjectivity opens the living realm to a hermeneutic perspective. Since any encounter has a meaning and is interpreted accordingly, it creates a perspective of innerness or self. This self experiences all external and internal stimuli as values. The innerness is coextensive with the material dimensions of biochemical processes as their other, or symbolic, side. By this process the subjective perspective of organisms is open to other’s experience. Meaning and value become visible, as they are generated in material, embodied form. Instead of being separate from nature as pure “mind” or “language”, man shares with any other being the same “conditio vitae” of experienced meaning and expressive feeling. (shrink)

This paper describes the semiotic approach to organism in two proto-biosemiotic thinkers, Susanne K. Langer and Hans Jonas. Both authors develop ideas that have become central terms of biosemiotics: the organism as subject, the realisation of the living as a closed circular self, the value concept, and, in the case of Langer, the concept of symbol. Langer tries to develop a theory of cultural symbolism based on a theory of organism as a self-realising entity creating meaning and value. This paper (...) deals mainly with what both authors independently call “feeling”. Both authors describe “feeling” as a value-based perspective, established as a result of the active self interest manifested by an organic system. The findings of Jonas and Langer show the generation of a subject pole, or biosemiotic agent, under a more precise accent, as e.g. Uexküll does. Their ideas can also be affiliated to the interpretation of autopoiesis given by the late Francisco Varela (embodied cognition or “enactivism”). A synthesis of these positions might lead to insights how symbolic expression arises from biological conditions of living. (shrink)

Francisco Varela highlighted many links between his philosophy of cognition and Buddhism. This paper focuses on those connections which Varela did not make explicit. Varela was a disciple of Tulku Urgyen Rinpoche, a renowned master of the Nyingma school of Tibetan Buddhism. This school emphasizes the direct experience of the 'nature of the mind' — hence, reality. Only by taking into account how this experience formed Varela's thinking do we understand the full scope of his idea of life. For Varela, (...) living beings act from the perspective of a self, although this self does not exist as a place or organ in the organism. In his training with Tulku Urgyen Rinpoche, Varela realized that this 'selfless' self in the centre of an organism is the activity of giving life. In it, matter and inwardness, the subjective perspective and the perspective of 'being everything', are not separate. An organism is the gift of life coming from this centre, which is pure original consciousness — the 'nature of the mind'. (shrink)

In this paper I pursue the influences of Jakob von Uexküll’s biosemiotics on the anthropology of Ernst Cassirer. I propose that Cassirer in his Philosophy of the Symbolic Forms has written a cultural semiotics which in certain core ideas is grounded on biosemiotic presuppositions, some explicit (as the “emotive basic ground” of experience), some more implicit. I try to trace the connecting lines to a biosemiotic approach with the goal of formulating a comprehensive semiotic anthropology which understands man as embodied (...) being and culture as a phenomenon of general semioses. (shrink)

This paper attempts to put forward an aesthetic theory of nature based on a biosemiotic description of the living, which in turn is derived from an autopoietic theory of organism (p. Varela). An autopoietic system's reaction to material constraints is the unfolding of a dimension of meaning. In the outward Gestalt of autopoietic systems, meaning appears as fonn, and as such it reveals itself in a sensually graspable manner. The mode of being of organisms has an irreducible aesthetic side in (...) which this mode of being becomes visible. Nature thus displays a kind of transparency of its own functioning: in a nondiscursive way organisms show traces of their conditio vitae through their material self-presentation. Living beings hence always show a basic level of expressiveness as a necessary component of their organic mode of being. This is called the ecstatic dimension of nature (G. Böhme, R. Corrington). Autopoiesis in its full consequence then amounts to a view reminding of Paracelsus' idea of the signatura rerum (c. Glacken, H. Böhme): nature is transparent, not because it is organized digitally as a linguistic text or code, but rather because it displays analogically the kind of intentionality engendered by autopoiesis. Nature as a whole, as «living fonn" (S. Langer), is a symbol for organic intentionality. The most fundamental meaning of nature protection thus is to guarantee the «real presence" of our soul. (shrink)

In this paper I pursue the influences of Jakob von Uexküll’s biosemiotics on the anthropology of Ernst Cassirer. I propose that Cassirer in his Philosophy of the Symbolic Forms has written a cultural semiotics which in certain core ideas is grounded on biosemiotic presuppositions, some explicit (as the “emotive basic ground” of experience), some more implicit. I try to trace the connecting lines to a biosemiotic approach with the goal of formulating a comprehensive semiotic anthropology which understands man as embodied (...) being and culture as a phenomenon of general semioses. (shrink)

This essay analyses the career of the German chemist and government functionary Caspar Georg Carl Reinwardt through the layered lens of governance and management. By conceptualizing governance as the historical result of the interaction between locally situated accumulation and management projects and the ‘metropolitan’ assessment of their value, it uses Reinwardt’s experiences to shed fresh light on the idiosyncrasies through which Europe and Southeast Asia were linked in the early nineteenth century. The discussion of three closely related episodes exemplifies this (...) point. Taken together, the essay problematizes simple center-periphery relationships by demonstrating that such global connections be understood through a comparison between ‘metropolitan’ and ‘colonial’ science. Rather it demonstrates the insights drawn from employing a framework that unites narratives of ‘imperial’ and ‘metropolitan’ histories of accumulation, and brings them under one analytical umbrella. (shrink)

This paper attempts to put forward an aesthetic theory of nature based on a biosemiotic description of the living, which in turn is derived from an autopoietic theory of organism (p. Varela). An autopoietic system's reaction to material constraints is the unfolding of a dimension of meaning. In the outward Gestalt of autopoietic systems, meaning appears as fonn, and as such it reveals itself in a sensually graspable manner. The mode of being of organisms has an irreducible aesthetic side in (...) which this mode of being becomes visible. Nature thus displays a kind of transparency of its own functioning: in a nondiscursive way organisms show traces of their conditio vitae through their material self-presentation. Living beings hence always show a basic level of expressiveness as a necessary component of their organic mode of being. This is called the ecstatic dimension of nature (G. Böhme, R. Corrington). Autopoiesis in its full consequence then amounts to a view reminding of Paracelsus' idea of the signatura rerum (c. Glacken, H. Böhme): nature is transparent, not because it is organized digitally as a linguistic text or code, but rather because it displays analogically the kind of intentionality engendered by autopoiesis. Nature as a whole, as «living fonn" (S. Langer), is a symbol for organic intentionality. The most fundamental meaning of nature protection thus is to guarantee the «real presence" of our soul. (shrink)

This paper describes the semiotic approach to organism in two proto-biosemiotic thinkers, Susanne K. Langer and Hans Jonas. Both authors develop ideas that have become central terms of biosemiotics: the organism as subject, the realisation of the living as a closed circular self, the value concept, and, in the case of Langer, the concept of symbol. Langer tries to develop a theory of cultural symbolism based on a theory of organism as a self-realising entity creating meaning and value. This paper (...) deals mainly with what both authors independently call “feeling”. Both authors describe “feeling” as a value-based perspective, established as a result of the active self interest manifested by an organic system. The findings of Jonas and Langer show the generation of a subject pole, or biosemiotic agent, under a more precise accent, as e.g. Uexküll does. Their ideas can also be affiliated to the interpretation of autopoiesis given by the late Francisco Varela (embodied cognition or “enactivism”). A synthesis of these positions might lead to insights how symbolic expression arises from biological conditions of living. (shrink)

In this paper I pursue the influences of Jakob von Uexküll’s biosemiotics on the anthropology of Ernst Cassirer. I propose that Cassirer in his Philosophy of the Symbolic Forms has written a cultural semiotics which in certain core ideas is grounded on biosemiotic presuppositions, some explicit (as the “emotive basic ground” of experience), some more implicit. I try to trace the connecting lines to a biosemiotic approach with the goal of formulating a comprehensive semiotic anthropology which understands man as embodied (...) being and culture as a phenomenon of general semioses. (shrink)

In their most informative text, Zuk et al. (2023) describe the perspectives researchers take on DBS and aDBS when discussing changes in patients’ personality, mood, or behavior. To this end, Zuk et...

Nautilus Award Gold Medal Winner, Ecology & Environment In Matter and Desire, internationally renowned biologist and philosopher Andreas Weber rewrites ecology as a tender practice of forging relationships, of yearning for connections, and of expressing these desires through our bodies. Being alive is an erotic process--constantly transforming the self through contact with others, desiring ever more life. In clever and surprising ways, Weber recognizes that love--the impulse to establish connections, to intermingle, to weave our existence poetically together (...) with that of other beings--is a foundational principle of reality. The fact that we disregard this principle lies at the core of a global crisis of meaning that plays out in the avalanche of species loss and in our belief that the world is a dead mechanism controlled through economic efficiency. Although rooted in scientific observation, Matter and Desire becomes a tender philosophy for the Anthropocene, a "poetic materialism," that closes the gap between mind and matter. Ultimately, Weber discovers, in order to save life on Earth--and our own meaningful existence as human beings--we must learn to love. (shrink)

Psychometrically sound instruments that assess temporal dynamics of creative abilities are limited. The Ambulatory Battery of Creativity is designed to assess creative ideation performance multiple times in everyday life and was proven to capture the intra-individual dynamic of creative abilities reliably and validly. The present ambulatory study aimed to replicate and extend the psychometric evidence of the novel ABC. Sixty-nine participants worked on the ABC during a 5-day ambulatory assessment protocol. Each day, participants completed six randomly presented items of the (...) verbal and the figural ABC. Matching previous psychometric analyses, the results indicated good between-person and good within-person reliability. Furthermore, evidence for between-person and within-person validity of the ABC was obtained. Performance in the verbal and the figural ABC were interrelated and correlated with an independent measure of creative potential. The verbal ABC was further associated with openness, self-reported creative behavior, creative activities, and creative achievements, thus providing additional evidence of construct validity, especially for the verbal ABC. Finally, the verbal and the figural ABC yielded convincing within-person validity: Longer response times and higher subjective originality ratings were associated with more original ideas. This replication and extension of the ABC’s psychometric properties indicates that it enables a reliable and valid assessment of moment-to-moment fluctuations of creative ideation abilities in everyday life, which may facilitate the investigation of exciting new research questions related to dynamic aspects of creative ability. (shrink)

Lived experience can be viewed as the unfolding of “poetic space.” This is neither “just” matter nor experience, but the collective exploration of felt embodied meanings by individuals, ….

Meaning, feeling and expression - the experience of inwardness - matter most in human existence. The perspective of biopoetics shows that this experience is shared by all organisms. Being alive means to exist through relations that have existential concern, and to express these dimensions through the body and its gestures. All life takes place within one poetic space which is shared between all beings and which is accessible through subjective sensual experience. We take part in this through our empirical subjectivity, (...) which arises from the experiences and needs of living beings, and which makes them open to access and sharing in a poetic objectivity. Biopoetics breaks free from the causal-mechanic paradigm which made biology unable to account for mind and meaning. Biology becomes a science of expression, connection and subjectivity which can understand all organisms including humans as feeling agents in a shared ecology of meaningful relations, embedded in a symbolical and material metabolism of the biosphere. (shrink)

A poetics of the real -- The ideology of death -- Bioeconomics: the hidden megascience -- Biopoetics: desiring to be -- Natural anticapitalism -- Commons: inviting the other -- Poetic objectivity -- Culture: imagining the other.

TheoryDigital technologies have become an integral part of everyday life that children are exposed to. Therefore, it is important for children to acquire an understanding of these technologies early on by teaching them computational thinking as a part of STEM. However, primary school teachers are often reluctant to teach CT. Expectancy-value theory suggests that motivational components play an important role in teaching and learning. Thus, one hindrance to teachers’ willingness to teach CT might be their low expectancies of success and (...) high emotional costs, e.g., anxiety towards CT. Thus, introducing preservice teachers to CT during their university years might be a promising way to support their expectancies and values, while simultaneously alleviating their emotional costs. Prior CT competences might contribute to these outcomes.AimsWe investigated whether a specifically designed seminar on CT affected preservice teachers’ expectancies and values towards programming.Method: A total of 311 German primary school and special education preservice teachers took part in the study. The primary school preservice teachers received a seminar on CT and programming with low-threshold programming tasks, while the special education teachers served as a baseline group. The seminar was specifically designed to enhance expectancies and values and decrease emotional costs, following implications of research on expectancy-value theory.ResultsThe preservice teachers who visited the seminar gained higher expectancies and values towards CT and programming compared to the baseline group. Moreover, their emotional costs decreased. CT was positively related to change in expectancies and values and negatively related to emotional costs.DiscussionInterventions with low-threshold programming tasks can support primary school preservice teachers in finding trust in their abilities and values towards CT. Moreover, their anxiety towards CT and programming can be alleviated. Thus, first steps in preparing preservice teachers to teach CT in their future classrooms can be taken in university. (shrink)

This paper describes the semiotic approach to organism in two proto-biosemiotic thinkers, Susanne K. Langer and Hans Jonas. Both authors develop ideas that have become central terms of biosemiotics: the organism as subject, the realisation of the living as a closed circular self, the value concept, and, in the case of Langer, the concept of symbol. Langer tries to develop a theory of cultural symbolism based on a theory of organism as a self-realising entity creating meaning and value. This paper (...) deals mainly with what both authors independently call “feeling”. Both authors describe “feeling” as a value-based perspective, established as a result of the active self interest manifested by an organic system. The findings of Jonas and Langer show the generation of a subject pole, or biosemiotic agent, under a more precise accent, as e.g. Uexküll does. Their ideas can also be affiliated to the interpretation of autopoiesis given by the late Francisco Varela . A synthesis of these positions might lead to insights how symbolic expression arises from biological conditions of living. (shrink)

Sein heißt Teilen. Teilen heißt Sein, auf allen Ebenen, vom Atom bis zu unserer Erfahrung von Glück. Lebendigsein folgt der Sehnsucht, ganz Individuum zu werden - und diese erfüllt sich nur in Austausch und Verwandlung. Erst aus Teilhabe entsteht Stimmigkeit, das Gefühl, ein eigenes Selbst, Zentrum der eigenen Erfahrung zu sein. Unser Stoffwechsel, gelingende Beziehungen, Sinnerfahrungen, aber auch der Austausch von Gütern und Leistungen können nur gedeihen, wenn wir sie als gemeinsame Teilhabe an einer schöpferischen Wirklichkeit erschaffen. Diese ist Stoff, (...) und sie ist Fantasie. Atmen heißt Teilen, Körpersein ist Teilen und Lieben bedeutet Teilen. Sein durch Teilen ist die Seele der lebendigen Wirklichkeit. In dieser durchdringen sich Innen und Außen. Sie ist ein leidenschaftlicher Beziehungsprozess, in dem das Begehren nach Identität erst im Leuchten des Anderen eingelöst wird. (shrink)

Sein heißt Teilen. Teilen heißt Sein, auf allen Ebenen, vom Atom bis zu unserer Erfahrung von Glück. Lebendigsein folgt der Sehnsucht, ganz Individuum zu werden - und diese erfüllt sich nur in Austausch und Verwandlung. Erst aus Teilhabe entsteht Stimmigkeit, das Gefühl, ein eigenes Selbst, Zentrum der eigenen Erfahrung zu sein. Unser Stoffwechsel, gelingende Beziehungen, Sinnerfahrungen, aber auch der Austausch von Gütern und Leistungen können nur gedeihen, wenn wir sie als gemeinsame Teilhabe an einer schöpferischen Wirklichkeit erschaffen. Diese ist Stoff, (...) und sie ist Fantasie. Atmen heißt Teilen, Körpersein ist Teilen und Lieben bedeutet Teilen. Sein durch Teilen ist die Seele der lebendigen Wirklichkeit. In dieser durchdringen sich Innen und Außen. Sie ist ein leidenschaftlicher Beziehungsprozess, in dem das Begehren nach Identität erst im Leuchten des Anderen eingelöst wird. (shrink)

This paper describes the semiotic approach to organism in two proto-biosemiotic thinkers, Susanne K. Langer and Hans Jonas. Both authors develop ideas that have become central terms of biosemiotics: the organism as subject, the realisation of the living as a closed circular self, the value concept, and, in the case of Langer, the concept of symbol. Langer tries to develop a theory of cultural symbolism based on a theory of organism as a self-realising entity creating meaning and value. This paper (...) deals mainly with what both authors independently call “feeling”. Both authors describe “feeling” as a value-based perspective, established as a result of the active self interest manifested by an organic system. The findings of Jonas and Langer show the generation of a subject pole, or biosemiotic agent, under a more precise accent, as e.g. Uexküll does. Their ideas can also be affiliated to the interpretation of autopoiesis given by the late Francisco Varela (embodied cognition or “enactivism”). A synthesis of these positions might lead to insights how symbolic expression arises from biological conditions of living. (shrink)