Tag: Symbiosis

A lichen is a unique composite organism formed through close interactions between a filamentous fungus (mycobiont) and its photosynthetic partners [algae and/ or cyanobacteria, referred together as photobiont(s)]. In an effort to better understand these mutualistic interactions, Joisten-Rosenthal et…

Arbuscular mycorrhizal (AM) fungi trade soil phosphate for plant carbon at arbuscules, the short-lived, branched hyphal structures they build inside root cortical cells, but how phosphate uptake is coordinated across this constantly changing interface has been hard to observe. McGaley et al. used non-invasive,…

Plants rely on microbes to aid their uptake of nutrients. Most plants from an intimate association with mycorrhizal fungi, in which both partners benefit through the exchange of nutrients and photosynthate. In the most common form, arbuscular mycorrhizal symbiosis, the fungus forms branched structures…

Rhizobial symbiosis requires communication and recognition between the plant host and the nitrogen-fixing bacteria. When successful, plant root hairs reorganize their membranes and form specialized infection threads through which the rhizobia enter the root and initiate nodules. In new work, Qiao et…

Lichens are complex assemblies that are composed of at least two organisms, a fungus (the mycobiont) and a photosynthetic partner, the photobiont. Lichen lifestyles have emerged several times, and the photobiont can be either prokaryotic cyanobacteria or eukaryotic algae. Recently, Tagirdzhanova et al.…

I love learning about the many molecular adaptations that allowed plants to adapt to life on land, and particularly have enjoyed sharing the iconic micrograph from Remy et al (1994) that shows a 400 year old arbuscular mycorrhiza of the fungus Glomeromycotina  inside a cell of Aglaophyton major. Now,…

Through their roots, plants live in close association with many soil microorganisms, including fungi and bacteria that help them grow. Beneficial fungi help plants cope with stress, and in return, the plants provide them with nutrients. A key part of this exchange is the movement of sucrose, a sugar…

Legume plants are renowned for their ability to form symbiotic relationships with nitrogen-fixing bacteria (rhizobia) in specialized root tissues called nodules. This symbiosis enables the conversion of atmospheric nitrogen into ammonia, a form of nitrogen that plants can readily use for growth. This…