Certain invasive, non-native species can disrupt lakes to the point of rapid ecosystem collapse, contaminating water for drinking, aquaculture and recreation, a new study has found.
Cementing waterhemp's reputation as a hard-to-kill weed in corn and soybean production systems, researchers have now documented the weed deviating from standard detoxification strategies to resist an herbicide that has never been commercialized.
Amber researc has produced the first definite identification of grass in fossilized tree resin from the Baltic region, home to the world's most well-known amber deposits.
Researchers have gained new insights into the learning ability of tobacco hawkmoths. In two recent publications, they report that learning odors does not only play a role in foraging, but that female moths are also influenced by previously learned odors when choosing a host plant to lay their eggs. In this context, a single deposited egg on a certain plant is sufficient for the moth's choice to visit the same plant species again even after 24 hours. In contrast, the moth's second nose, the tip of the proboscis on which olfactory sensory cells have also been identified, does not appear to play a role in learning odors and making odor-guided foraging decisions. The results provide clues to the adaptability of these insects to their environment.
The accelerated proliferation of lianas in old-growth forest due to natural disturbance may be altering forest structure, regeneration, and functioning.
Clover plants grown in Mars-like soils experience significantly more growth when inoculated with symbiotic nitrogen-fixing bacteria than when left uninoculated, researchers report.
A new study has found that recent bigleaf maple die-off in Washington is linked to hotter, drier summers that predispose this species to decline. These conditions essentially weaken the tree's immune system, making it easier to succumb to other stressors and diseases.
Scientists have purified and identified an attractant for crop-infecting root-knot nematodes from flaxseeds. Their experiments revealed that rhamnogalacturonan-I (RG-I), a flaxseed cell wall component, can attract root-knot nematodes. The linkages between rhamnose and L-galactose are essential for the attraction.
Invasive shrubs in Northeastern forests that sprout leaves earlier in the spring and keep them longer in the fall not only absorb more sunlight than native shrubs, but their foliage lowers air temperatures on the forest floor, likely giving them another competitive advantage.
A new study has revealed that biotechnology could be the missing ingredient in helping cocoa farmers get a better deal for their beans.