(a) Mature Calypso bulbosa plant without a coral-shaped rhizome. (b) Mature Calypso bulbosa plant with a coral-shaped rhizome.

The modified underground architecture enhances carbon gains through not photosynthesis but fungal parasitism

Suetsugu, Kenji; Matsubayashi, Jun Green coloration is a defining feature of the plant kingdom, and plants are mostly autotrophic, i.e. they make their own nutrients through photosynthesis. However, several hundreds of plants have lost their photosynthetic ability and have evolved to depend entirely on mycorrhizal fungi (known as full mycoheterotrophy). Since photosynthesis is a fundamental process for plant survival, its loss is one of the … Continue reading The modified underground architecture enhances carbon gains through not photosynthesis but fungal parasitism

Photo of alpine rock-cress. Credit: Hampus Petrén.

Nutrients, but not water, affect floral scent emission in a flowering plant

Luizzi, Victoria; Friberg, Magne; Petrén, Hampus Fragrance compounds produced by flowers are important in attracting pollinators, deterring nectar thieves (organisms that consume nectar without pollinating), and controlling potentially harmful nectar microbes. Floral scent is often highly variable among and even within populations of plants, but this variation is only sometimes associated with variation in pollinator communities. An alternative, but little-researched, explanation for floral scent variation … Continue reading Nutrients, but not water, affect floral scent emission in a flowering plant

A field with a layer of snow protecting overwintering herbaceous plants. Photo by F. C. Lubbe.

Review: Look belowground: herbaceous plants and changing winters

Frederick Curtis Lubbe, Jitka Klimešová, and Hugh A. L. Henry Perennial herbaceous plants that live in areas with cold winters can survive thanks to special overwintering belowground organs made of stems and/or roots. Those overwintering organs store carbohydrates and bear the buds from which new stems and leaves are regrown in the spring. To overwinter successfully, herbaceous plants need to accumulate enough resources and be … Continue reading Review: Look belowground: herbaceous plants and changing winters