A modified petal and stamen dimorphism interact to enhance pollen placement by a buzz-pollinated flower.

Background: Floral adaptations supposedly favour pollen grains to cross the numerous barriers faced during their journey to stigmas. Stamen dimorphism and specialized petals, like the cucculus in the Cassieae tribe (Fabaceae), are commonly observed in flowers that offer only pollen as a resource for bee pollinators. Here, we experimentally investigated whether the stamen dimorphism and cucculus enhance pollen placement on the bee's body.

The 4.2 ka event is not remarkable in the context of Holocene climate variability.

The "4.2 ka event" is a commonly described abrupt climate excursion that occurred about 4200 years ago. However, the extent to which this event is coherent across regional and larger scales is unclear.

Therapeutic efficacy of isavuconazole and potassium iodide in a cat with refractory sporotrichosis.

A seven-month-old, male, domestic short-hair cat was presented with nodular and ulcerative lesions, as well as respiratory signs, caused by Sporothrix brasiliensis infection. Owing to lack of response to oral itraconazole and potassium iodide, isavuconazole was substituted for itraconazole, leading to clinical cure after three months of treatment without adverse effects.

Left atrial enlargement is associated with pulmonary vascular disease in heart failure with preserved ejection fraction.

Aims: Elevated left atrial (LA) pressure is a pathophysiologic hallmark of heart failure with preserved ejection fraction (HFpEF). Chronically elevated LA pressure leads to LA enlargement, which may impair LA function and increase pulmonary pressures. We sought to evaluate the relationship between LA volume and pulmonary arterial haemodynamics in patients with HFpEF.