Researchers at the University of Oxford have discovered that a cellular mechanism preferentially protects
plant genes from the damaging effects of mutation.
«Through our research we discovered that defense against extracellular pathogens (ETD) involves different
plant genes from those involved in the defense against intracellular pathogens.
Not exact matches
Now instead they transfer
genes from the soybean
plant into the yeast, grow the yeast, and then isolate the heme protein
from the resulting broth.
It's also working in Beijing on new technology in genome editing; unlike GMO technology, it doesn't involve inserting a
gene from another species, such as a bacterium, into a
plant.
The
gene comes
from the bacteria Bacillus thuringiensis, a biopesticide which in organic agriculture is sprayed directly onto crops to protect the
plants from insects, Saletan explains.
In genetic modification (or engineering) of food
plants, scientists remove one or more
genes from the DNA of another organism, such as a bacterium, virus, or other
plant or animal, and «recombine» them into the DNA of the
plant they want to alter.
These include
genes from plants and organisms unrelated to rice that could not be transferred using other breeding methods.
Before the products
from these varieties can be used, they will need approval
from the Office of the
Gene Technology Regulator, which ensures GM
plants are safe for humans and the environment and
from Food Standards Australia and New Zealand which regulates food safety.
Beyond this, the unique power of GM lies in its ability to incorporate novel
genes with useful traits for rice, including
genes from plants and organisms unrelated to rice, into new rice varieties that can not be achieved using other breeding methods.
The newer process of genetic engineering, which involves inserting
genes from unrelated species into a
plant's genome to add desirable traits, has been used in crops such as corn, soy, and potatoes.
When she tried counterpart
genes from other
plants to see if they worked better in the rice, the
gene from maize came up trumps.
Without a more diverse pool of
genes to pull
from, your
plants are much more likely to fall victim to some inherited disease.
This experimental technology merges DNA
from different speciesto create new combinations of
plant, animal, bacterial and viral
genes that can not be formed naturally.
«Currently, we are conducting a series of joint investigations on
gene family evolution and adaptation genomics in
plants with colleagues at the Chinese Academy of Sciences, and we foresee more significant results
from this collaboration,» says Xiao - Ru Wang.
Plants are crossbred to introduce traits /
genes from one variety or line into a new genetic background.
«Trees in Siberia are under different selective pressure
from trees in Finland, so
genes are being tweaked in different ways in these two places to allow these
plants to better adjust to their environment.»
The fact that a similar
gene cascade has been found in flowering
plants and their gymnosperm cousins indicates that this is inherited
from their common ancestor.
At the same time, I had a great opportunity to learn much about the molecular aspects of the work,
from gene construction to
plant transformation and screening.
Is the jump in resistance
genes coming
from a population explosion in the resistant enteric, or intestinal, bacteria coming into the sewage
plant?
Some of the proteins in the chloroplast are made
from hereditary
genes in the chloroplast itself, while other proteins (such as Sco2) are made
from the DNA in the nucleus of the
plant cell and then imported into the chloroplast.
Such
plants have two mutant copies of a
gene called hothead, which differ
from the normal
gene by a single base pair.
However, the positive impacts of biochar were coupled with negative findings for a suite of
genes that are known to determine the ability of a
plant to withstand attack
from pests and pathogens.
Researchers
from Purdue University and the University of Nebraska - Lincoln have discovered a soybean
gene whose mutation affects
plant stem growth, a finding that could lead to the development of improved soybean cultivars for the northern United States.
By counting the proportions of these traits in several generations of pea
plants, the inquisitive monk concluded that these features must derive
from pairs of what we now call
genes, which he discovered were randomly divided between offspring.
To find out if the equivalent pea sgr was Mendel's
gene, they picked out the location of its sequence
from pea
plants that varied in their seed color.
The aim is to ensure that the benefits resulting
from researching animals,
plants and microorganisms, such as the invention of new medicines or enhanced
genes to improve crop varieties, are «fairly and equitably shared» among the providers and users.
Engineered organisms that can not breed with wild counterparts could prevent transgenic
plants from spreading
genes
For example, Keasling and his team cloned
genes from Clostridium stercorarium and Bacteroides ovatus — bacteria that thrive in soil and the guts of
plant - eating animals, respectively — which produce enzymes that break down cellulose.
The first transgenic crop likely to be put forward for approval for open trials and commercial release is Bt cotton — which has added
genes from the Bacillus thuringiensis bacterium, making the
plant produce toxins that confer resistance to some insect pests.
The team spliced a nonfunctional
gene for the ethylene receptor, taken
from a common laboratory
plant called Arabidopsis, into petunias.
Yinong Yang, a
plant pathologist at Penn State University, used CRISPR / Cas9 to snip out a tiny bit of one
gene from the mushroom Agaricus bisporus.
To understand the genetic shifts underlying the repeated origins of mycorrhizal lifestyles, the researchers focused on enzymes that degrade
plant cell walls
from 16
gene families associated with
plant cell wall degradation.
They added the
gene to poplar trees, and found they could extract nearly double the amount of sugar
from the modified
plants compared with unmodified
plants, suggesting the lignin was breaking down more easily (Science, doi.org/r6s).
«Zhiyong's new work reveals a potential energy - saving strategy in
plants where heat - stress response
genes are prevented
from being turned on at night when there is less chance of heat stress.
Moving
from biochemistry to molecular biology, Palatnik started investigating the role of microRNAs — tiny RNA molecules that are important in
gene regulation in most life forms — in the development of the
plant Arabidopsis.
No one knows where or when this happened, but
plant pathologists discovered last year that yellow rust can reproduce sexually, suggesting the new strain may have picked up
genes from local strains by mating with them.
When she tried counterpart
genes from other
plants to see if they worked better in the rice, the
gene from maize came up trumps.
In 1992 countries were mostly focused on controlling the
genes from indigenous
plants.
Xi's work also shows that even the
genes that Rafflesia
plants inherited
from their own ancestors have appropriated the characteristics of the vines»
genes; up to 30 percent of the corpse flowers» native
genes code for proteins (the process that helps to determine physical traits) in a way that's more like the vines» than like its fellow Malpighiales».
At the meeting, team member Koffi Konan, a
plant molecular biologist, showed how the
plants were made by inserting shortened or backward versions of each of the
genes — Ara h1, Ara h2, and Ara h3 — into cultured cells
from peanut
plants.
In previous studies, Chen - Yu Zhang's group has reported a striking finding that
plant miRNAs are ingested
from plant diets and pass through the gastrointestinal tract, enter into the blood, accumulate in tissues and regulate endogenous
gene expression in animals.
Synthetic incompatibility has applications in controlling or eradicating invasive species, crop pests and disease - carrying insects as well as preventing altered
genes from escaping
from genetically modified crops into other
plant populations.
As a possible step toward the goal of doubling food production by 2050 to feed our expanding human population, researchers have transferred a key photosynthesis
gene from a blue - green algae into a tobacco
plant, according to a Nature news story.
The
gene works by making the
plant mature more rapidly, thus speeding up the transfer of these nutrients
from the leaves to the grain.
When scientists engineered the
plants to express the glutathione transferase (DmGSTE6)
gene found in fruit flies, they found that
plants expressing the
gene were more resistant to TNT and were better able to remove it
from contaminated soil than wild - type
plants without the
gene.
A team of researchers at the University of Bonn, in cooperation with scientists
from the Sainsbury Laboratory in Norwich, has now identified a
gene in thale cress (Arabidopsis thaliana), called NILR1, that helps
plants sense nematodes.
ScienceInsider will have coverage Wednesday
from Moscow on a crucial case on Russia's
plant gene bank near St. Petersburg.
With funding
from Wine Australia, a team of scientists
from the ARC Centre of Excellence in
Plant Energy Biology at the University of Adelaide and CSIRO Agriculture and Food identified
genes expressed in grapevine roots that limit the amount of sodium — a key component of salt — that reaches berries and leaves.
Plants in the genus open little five - petaled flowers and readily form classic seeds that mix
genes from pollen and ovule.
After looking at all the kinds of evidence she might muster for a
plant,
from its
genes and distribution to the details of petals, leaf hairs and other parts, she sides with the preponderance of data to designate a species.