Sentences with phrase «symbionts at»

Grossman explains: «One theory that we are exploring is that under heat - stress conditions the corals eject the algal symbionts at night in order to avoid the production and accumulation of photosynthetically - derived toxic oxygen molecules during the day.

Functional genomics will also help scientists understand how AMF interact with their plant symbionts at the molecular level.

Not exact matches

«It's easy to get [these features] when you're essentially swallowing a symbiont,» says Hyman Hartman, a research scientist at the Massachusetts Institute of Technology who studies the origin of life.

It will, and will be studying its human symbionts too, and all at ever - faster speeds

Mesophotic (medium light): 40 to as deep as 150 meters (120 - 450 feet), the maximum depth at which tropical reef - building corals and their algal symbionts can survive.

The study is the first to show conclusively that a bacterial symbiont can protect aphids against parasites, says Richard Stouthamer, an ecologist at the University of California, Riverside.

«We found that commonly applied molecular methods did not give enough resolution to distinguish the dominant symbionts of Gulf corals from those in other parts of the world's oceans,» explains Professor Jörg Wiedenmann, Professor of Biological Oceanography and Head of the Coral Reef Laboratory at the University of Southampton.

«Basic theory predicts that whenever a symbiont is preferentially transmitted through one sex, it will evolve [ways] to overproduce that sex,» explains John Werren, an evolutionary geneticist at the University of Rochester in New York who was not involved with the work.

Or consider the nuclear genes of the cells of advanced organisms (eukaryotes): At some early point in their evolution, these cells gained the help of the genes of a parasite or symbiont that became the mitochondrion, an organelle necessary for energy production.

«We're all perfectionists; that's what we're selected for as a scientist,» says Ivens, who spends her days studying relationships between ants and their symbionts as a postdoctoral fellow at Vrije Universiteit in Amsterdam.

The aforementioned research group demonstrated that the expulsion of zooxanthellae at 27 °C (non-thermal stress conditions) is part of a regulatory mechanism that maintains zooxanthellal density and a stable carbon concentration with expulsion of digested or normal forms of symbionts.

At the time, these extranuclear agents of heredity were thought of as everything from parasites, to symbionts, to genes and the labels applied to them were vague or contradictory, owing in part to the fact that very little was known about the role these factors played within an organism.

Here, we tested the hypothesis that sub-bleaching temperature and excess nitrogen promotes symbiont parasitism by measuring respiration (costs) and the assimilation and translocation of both carbon (energy) and nitrogen (growth; both benefits) within Orbicella faveolata hosting one of two Symbiodiniumphylotypes using a dual stable isotope tracer incubation at ambient (26 °C) and sub-bleaching (31 °C) temperatures under elevated nitrate.

In the new study, investigators demonstrated that when the southern green stinkbug was reared inside an incubator, in which temperature was controlled at 2.5 °C higher than outside, there was a significant reduction in the symbiont bacteria that sparked severe fitness defects in the insect (ie.

Ironically, it is these burning fir trees that pose the only real fire threat to their sequoia symbionts, the burning trunk of a fir leaning up against the sequoia can lead to exactly the type of fire hollowing damage that we observe and that ultimately makes it possible for a dead sequoia to fall over at all, otherwise they might remain standing dead for a thousand years [not much good even for the squirrels].

Conversely symbionts living at greater depths may photosynthesize more efficiently under low light conditions but are more susceptible to UV damage.

Transplant experiments revealed that when coral colonies growing at greater depths were relocated closer to the surface, the polyps expelled their symbionts resulting in temporary bleaching.