Ornamental Mediterranean plants in the UK: root adaptations to hypoxia and anoxia

Mediterranean species are popular landscape plants in the UK and well suited to the predicted climate change scenarios of hotter, drier summers. What is less clear is how these species will respond to the more unpredictable rainfall patterns also anticipated, where soil water-logging may become more prevalent, especially in urban environments where soil sealing can restrict drainage. Pot experiments on flooding of four Mediterranean species (Cistus × hybridus, Lavandula angustifolia ‘Munstead’, Salvia officinalis and Stachys byzantina) showed that the effects of waterlogging were only severe when the temperature was high and flooding prolonged. All plants survived the flooding in winter, but during the summer a 17-day flood resulted in the death of 30-40% of the Salvia officinalis and Cistus × hybridus. To examine the response of roots to oxygen deprivation over a range of conditions from total absence of oxygen (anoxia), low oxygen (hypoxia) and full aeration, rooted cuttings of Salvia officinalis were grown in a hydroponic-based system and mixtures of oxygen and nitrogen gases bubbled through the media. Anoxia was found to reduce root development dramatically. When the plants were subjected to a period of hypoxia they responded by increasing the production of lateral roots close to the surface thus enabling them to acclimate to subsequent anoxia. This greatly increased their chances of survival.

"You can see some eagles. And hear the trumpets": the literary and political hinterland of T.S. Eliot's 'Coriolan'

There has been an increased amount of scholarly interest lately in T.S. Eliot's unfinished sequence, Coriolan (1932)—interest drawn from its Shakespearian allusiveness, and from analysis of this writing's particularly rebarbative, jarring poetic. Although, however, the two parts of the sequence published by Eliot are acknowledged as being his nearest approach to poetic commentary upon contemporary political ideas, little criticism exists establishing the hinterland of the political thought, with which Eliot was most familiar, as editor of the Criterion. Coriolan emerges at a time when the lure of fascism pulled hardest at Eliot's sensibility. This article reviews the full political context provided by Eliot's journal, as well as considering the connections between that political engagement and the readings of Shakespeare he was also promulgating through this forum, in order to provide a more complex sense than hitherto of the diverse pressures underlying the unsettled nature of the existing Coriolan poems.