The Clover Leaf-Tyer (Ancylis Angulifasciana Zeller)

A 'four-leaf clover' aortic valve

Corresponding author: Antonio Grimaldi, MD Department of Cardiothoracic and Vascular Surgery Università Vita-Salute San Raffaele Via Olgettina 60 20132 Milan, Italy e.mail: [email protected] A 75-year-old man with acute worsening of heart failure symptoms and a clinical history of prior rheumatic fever, presented with blood pressure 150/60 mmHg and a high-pitched diastolic murmur in the a...

Bruno Zeller

Leaf senescence and clonal growth of white clover

Leaf senescence is a programmed event where resources are mobilised from older tissues to the meristematic regions of the plant. In white clover (Trifolium repens L.), leaf and stolon senescence have an important impact on the persistence of the legume in pasture. As part of our investigation of leaf senescence, we have evidence for a central role for the plant hormone ethylene and have identif...

Dirk Zeller Æ Shawn Booth

Fisheries catches from Pacific Island coral reefs are rarely recorded in official statistics. Reconstruction of catch estimates with limited hard data requires interpolation and assumptions, justifiable only by the unsatisfactory alternative of continued substitution of zero catches, a common policy interpretation for ‘no data’. Uncertainties associated with reconstructions are high, requiring ...

Susceptibility of clover species to fungal infection: the interaction of leaf surface traits and environment.

Many foliar pathogens require free water to germinate; therefore, disease pressure should favor plants that are able to repel water. For a suite of 18 sympatric clover species (Trifolium and Medicago, Fabaceae), we evaluated leaf traits affecting leaf wetness and susceptibility to infection by the fungal pathogen Stemphylium sp., causal agent of Stemphylium leaf spot. Spore germination increase...