Tag: "flowering" at biology news
Why nectar-feeding bats need a 'power drink' to fly
...t which are produced in only very small amounts by flowering
plants. These sugars are rapidly absorbed and digested, and by metabolising them directly rather than converting them to fat or glycogen and then using them up later the bats get the maximum energy they can from the sugars. This is important becaus...
Measuring nectar from eucalypts
...05, when the research was undertaken, as extensive flowering
was recorded across the south coast. The study s...igh: a typical 1000 hectares of spotted gum forest flowering
from April-August yielded five tonnes of honey. Honey productivity was found to be comparable acro...
Discovery in plant virus may help prevent HIV and similar viruses
...d trichomes (tiny hairlike structures) and delayed flowering
on the mutated plants, he said. In addition, mutant plants in which both genes were blocked died in the embryonic stage just as would an organism with only one gene. Now that Chen knows that Arabidopsis has two genes involved in the transcription p...
How plants learned to respond to changing environments
...plants. They discovered that it was not until the flowering
plants evolved 300 million years ago that plants g... evolved counterparts when transferred into modern flowering
plants. The lycophyte group, which evolved 400 million years ago, were the first plants to evolve ...
Changing climate will challenge Northeast agriculture, CU expert warns
... the "winter chilling" period required for maximum flowering
and yield is no longer met. "With a lower emissions scenario, apple and other affected tree fruit crop industries would have several more decades to adapt, possibly switching to different varieties or crops," he said. Of perhaps greatest concern in t...
Size and positioning of floral anthers facilitates pollen collection by bees
...compare developmental patterns across many taxa of flowering
plants to gain insight into flower evolution. In ...rsal, even in the same genus. The appearance of flowering
plants on earth about 150 million years ago had a profound effect on the evolution of many other kin...
Size and positioning of floral anthers facilitates
...compare developmental patterns across many taxa of flowering
plants to gain insight into flower evolution. In a... even in the same genus. The diversification of flowering
plants on earth about 130 million years ago had a profound effect on the evolution of many other kin...
MU researchers make discovery in molecular mechanics of phototropism
...otropic signaling in Arabidopsis thaliana, a weedy flowering
plant commonly used as a model in laboratory studies. Focusing on non-phototropic hypocotyls 3 (NPH3), a protein known to be essential for phototropic responses, they examined its phosphorylation, the addition or removal of a phosphate group to the p...
A small leak will sink a great ship
four different types of floral organs need to be formed: sepals, which protect the inner organs; the frequently ornamental petals; stamens, which produce pollen and the carpels. This process is orchestrated by a large number of genes. Scientists at t...
Arctic spring comes weeks earlier than a decade ago
...of High Arctic species. Indeed, they show that the flowering
dates in six plant species, median emergence dates of twelve arthropod species, and clutch initiation dates in three species of birds have advanced, in some cases by over 30 days during the last decade. The average advancement across all time series ...
GM field trials 'underestimate potential for cross-pollination'
...iven the direction of the prevailing wind over the flowering
period of the crop. Field trials are regularly carried out to measure the potential for cross-pollination between GM and conventional crops. Current guidelines for minimum field-to-field distances are based on the results from these trials. However...
Research identifies protein that signals flowering in squash plants
...s a strong determining factor for the induction of flowering
in many plant species. Short day (SD) plants requi...ding and manipulating the photoperiodic control of flowering
time is an important objective in crop breeding and development programs, because it can aid in opti...
Plants tag insect herbivores with an alarm
...te to be at least four million insects and 230,000 flowering
plant species. Moreover, highly active plant defense signals can occur at trace levels, too small to easily detect or isolate. Still, scientists have determined that insect herbivory, mechanical damage, and pathogens such as bacteria and fungi can...
$4.4 million NIH grant renews Echinacea and St John's wort research at Iowa State
...n widely studied as medicinal plants. The entire flowering
plant has been used for inflammatory bowel disease, fever, headache, diarrhea, liver disease and mouth and throat aliments. ...
8 plants from South Africa may hold potential for treating high blood pressure
...tivity. The plants were: Amaranthus dubius, a flowering
plant also known as spleen amaranth Amaranthus hybridus, commonly known as smooth pigweed or slim amaranth Amaranthus spinosus, also known as spiny amaranth Asystasia gangetica, an ornamental, ground cover known as Chinese violet. A...
Scientists unlock secret of what makes plants flower
...ular system from the leaf to the shoot apex, where flowering
is induced. However, the identity of the long-dis...inting to the FT gene being central to controlling flowering
time. Now that we have been able to track FT protein moving from its source in leaves to its destina...
Do we need a paradigm change? Disputing coevolution in herbivorous insects
...lants (mainly the likewise speciose angiosperms or flowering
plants) have radiated in concert since the origin of both groups in the early Cretaceous. Indeed, this is a text-book example of coevolution and a straightforward interpretation of the forces driving evolution and the rise of new species. However, ...
No need to thank dinosaur-killing asteroid for mammalian success
...late with the upturn." Gittleman points out that flowering
plants first appeared during this epoch, possibly aiding the diversification of mammals by giving them new food sources. Clearly, Gittleman said, more research is needed. The team of researchers, which includes paleontologists, ecologists and bioin...
Mitochondrial genes move to the nucleus -- but it's not for the sex
...cience that they've uncovered an important clue in flowering
plants. "Plants that reproduce clonally or are capable of self-pollinating have transferred more genes from the mitochondrion to the nucleus," said graduate student Yaniv Brandvain, lead author of the paper. That discovery, Brandvain explained,...
UBC researchers reveal dwarf aquatic plants' hidden ancestry
...ellaceae as monocots, a large and diverse group of flowering
plants that includes the grasses, gingers and palm...s-size plants are instead part of an older line of flowering
plants that includes the water lilies. This ancient line split off the main trunk of the family tree...
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