Surti Singh

This article examines the turn to the aesthetic dimension in early 20th century critical theory, particularly in the work of Lukács, Benjamin and Adorno. It focuses on the concept of play ( Spiel), which garnered particular attention as a possible form of aesthetic resistance to the reification of reason in modern society. The article traces the concept of play from the work of Lukács, who engaged with Schiller’s notion of the play-drive but ultimately viewed it to be an inadequate form of aesthetic resistance, to the work of Benjamin, who optimistically embraced the revolutionary possibility of play. In contrast, the article argues that Adorno’s work tacitly advances a critical concept of dark play that offers a third perspective between Lukács’s pessimism and Benjamin’s optimism, thus avoiding both the retreat into an apolitical aesthetic dimension and the uncritical embrace of play’s revolutionary potential.

In The Society of the Spectacle, Debord describes the spectacle as a capitalist social formation that is at the same time reflective of the privileging of vision in the history of Western philosophy. This article highlights Debord’s appeal to the Hegelian-Marxist notion of reciprocal alienation in his discussion of how the spectacle invents the visual form. Reciprocal alienation produces a dialectical relation between concrete social activity and the spectacle, which I argue is key for understanding how the political subject is represented in the hyper-spectacularized societies of the 21st century.

In Aesthetic Theory, Adorno discusses the progressive spiritualization of art over the course of two centuries. By excluding natural beauty, art established itself as a realm of freedom created by the autonomous subject. Yet, similar to the process of rationalization that Adorno and Horkheimer describe in the Dialectic of Enlightenment, spiritualization also exposes the autonomy of art to the return of the repressed. In this paper, I establish a distinction in Adorno's work between spiritualization in its traditional sense, which designates this cycle of repression and return, and spiritualization in its radical sense, as the process that turns art against its history of domination. Spiritualization in this latter sense is the basis for an encounter with the repressed that exhibits a non- dominating stance toward otherness.

Plant biomass is a large source of fermentable sugars for the synthesis of bioproducts using engineered microbes. These sugars are stored as cell wall polymers, mainly cellulose and hemicellulose, and are embedded with lignin, which makes their enzymatic hydrolysis challenging. One of the strategies to reduce cell wall recalcitrance is the modification of lignin content and composition. Lignin is a phenolic polymer of methylated aromatic alcohols and its synthesis in tissues developing secondary cell walls is a significant sink for the consumption of the methyl donor S-adenosylmethionine. In this study, we demonstrate in Arabidopsis stems that targeted expression of AdoMet hydrolase in secondary cell wall synthesizing tissues reduces the AdoMet pool and impacts lignin content and composition. In particular, both NMR analysis and pyrolysis gas chromatography mass spectrometry of lignin in engineered biomass showed relative enrichment of non-methylated p-hydroxycinnamyl units and a reduction of dimethylated syringyl units. This indicates a lower degree of methylation compared to that in wild-type lignin. Quantification of cell wall-bound hydroxycinnamates revealed a reduction of ferulate in AdoMetase transgenic lines. Biomass from transgenic lines, in contrast to that in control plants, exhibits an enrichment of glucose content and a reduction in the degree of hemicellulose glucuronoxylan methylation. We also show that these modifications resulted in a reduction of cell wall recalcitrance, because sugar yield generated by enzymatic biomass saccharification was greater than that of wild-type plants. Considering that transgenic plants show no important diminution of biomass yields, and that heterologous expression of AdoMetase protein can be spatiotemporally optimized, this novel approach provides a valuable option for the improvement of lignocellulosic biomass feedstock.