Sentences with phrase «plant resistance genes»

The advent of rice varieties bearing genes with resistance to the disease has changed the perception about the disease: the incorporation of host - plant resistance genes in rice varieties, their adoption and deployment in the world's main rice - producing environments is probably one of the most significant evidences of the role of plant pathology in agricultural development.

The advent of rice varieties bearing genes with resistance to the disease has changed the perception about the disease: the incorporation of host - plant resistance genes in rice varieties, their adoption and deployment in the world's main rice - producing environments is probably one of the most significant evidences of the role of plant pathology in agricultural development.

Not exact matches

Researchers now have the tools to identify resistance genes in wild bananas or other plant species.

This makes me happy: a research project has identified a gene that gives wheat plants resistance to one of the most deadly races of the wheat stem rust pathogen, Ug99.

By adding these new genes, genetic engineers hope the plant will express the traits associated with the genes, such as resistance to certain diseases or herbicides.

Plant breeders have discovered that a single gene, the SUB1 gene, confers resistance to submergence of up to 14 days.

Professor Bruce Fitt, professor of plant pathology at the University of Hertfordshire, added: «This new understanding of plant defense through ETD suggests different operations of specific resistance genes which will help us to be more successful in breeding new strains of crops for resistance.

In fact, sewage treatment methods used at the country's 18,000 - odd wastewater plants could actually affect the resistance genes that enter their systems.

When the team induced expression of the corresponding gene in the leaves of two other plant species (one closely related to S. lycopersicum and the other more distantly related), both plants reacted to presence of the C. reflexa peptide with increased production of ethylene, and exhibited increased resistance to C. reflexa infestation.

Is the jump in resistance genes coming from a population explosion in the resistant enteric, or intestinal, bacteria coming into the sewage plant?

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.

Instead of having to overcome one major resistance factor, the rust fungi face plants that have a number of weaker, or minor, resistance genes.

Geneticists have been identifying genes native to plants that confer resistance to disease.

«Plants with one type of glyphosate - resistance mechanism make multiple copies of the target site for glyphosate, a gene called EPSPS.

When they inserted those genes into crop genomes, through a technique called recombinant DNA, the plants were able to produce the protein for bug resistance on their own, eliminating the need to spray insecticide.

The method is so effective in so many kinds of plants that «all previous technology uses antibiotic resistance genes,» says Michael Syvanen, a microbiologist at the University of California, Davis.

To grow a plant with better salt tolerance or pest resistance, scientists must first add genes to the embryo.

Most resistance genes, in wheat and other plants, code for protein receptors located inside cells; the Stb6 gene codes for a receptor protein on the cell's surface.

«Not only will knowledge about this gene enable us to detect the early signs of pests evolving resistance to the current engineered plants,» co-author Fred Gould of North Carolina State University notes, «it may also allow us to modify the plants so they will be defended against the new pest strains.»

They also created Cavendish lines with Ced9, a nematode gene known to confer resistance to many kinds of plant - killing fungi.

Ivo Rieu's research group also studies genes that provide plants with an increased heat resistance.

Simply incorporating the gene, known as Bt, into a plant gives it resistance to pests, without requiring periodic spraying by the farmer.

Eduard Akhunov, associate professor of plant pathology at Kansas State University, and his colleague, Jorge Dubcovsky from the University of California - Davis, led a research project that identified a gene that gives wheat plants resistance to one of the most deadly races of the wheat stem rust pathogen — called Ug99 — that was first discovered in Uganda in 1999.

Next, researchers isolated the candidate gene and used biotechnical approaches to develop transgenic plants that carried the Sr35 gene and showed resistance to the Ug99 race of stem rust.

In fields containing refuges of non-modified plants, resistance genes were less likely to be spread through the moth population.

Prof Bentzen from Dalhousie University said: «Although this study focused on MHC genes in vertebrates, the evolutionary dynamics described in it likely apply to other gene families, for example resistance genes and those which prevent self - fertilization in plants (self - incompatibility loci) that are caught up in their own evolutionary races.»

However, these genes are rarely found in bacteria outside the wastewater treatment plants, which suggests that — contrary to what was previously believed — the treatment plants do not pass on resistance genes to bacteria that are hazardous to people.

Companies selling Bt seeds hope to avoid that in part by designing plants that make more than one Bt toxin, but this strategy may not work if resistance to several toxins is tied to a single gene, says Tabashnik, who is now at the University of Arizona.

The findings thus challenge the generally held perception that wastewater treatment plants are hotbeds for the spread of antimicrobial resistance genes.

New Danish research has now revealed that the most common resistance genes in wastewater treatment plants are not to be found among bacteria outside these facilities — in people or animals, for example.

In a collaboration with colleagues from Aalborg University, Technical University of Denmark (DTU) researchers have studied genes from wastewater treatment plants that may help bacteria to develop antimicrobial resistance.

Professor Morten Sommer adds: «The findings from our research demonstrate that wastewater treatment plants contain a huge pool of genes with the capacity to provide bacteria with antimicrobial resistance, but that these genes do not appear in pathogenic bacteria.

It has therefore been generally assumed that wastewater treatment plants are the ideal location for pathogenic bacteria to develop new resistance genes.

Farmers are also trying to thwart resistance by growing plants that lack the Bt toxins near their fields, cultivating populations of normal insects that could swamp the resistance genes, says Randy Deaton, a Bt researcher at Monsanto, which developed some Bt crops.

Viral genes have been used to protect papaya plants against the ring spot virus, for example, with no sign of resistance evolving in over a decade of use in Hawaii.

Non-flowering plants could also ensure the containment of genes for herbicide resistance (or other traits conferred to the organisms), counteracting the concern that transgenic trees would spread their lab - produced genetics throughout nearby wild forest.

Stem rust, named for the blackening pustules that infect plant stems, caused devastating crop epidemics and famine for centuries before being tamed by fungicides and resistance genes.

Herbicide - resistance genes from GM canola have turned up in wild, weedy mustard plants on roadsides in the United States, Canada and elsewhere.

Mendel's regulatory gene controls the expression of other genes that influence cold resistance, and its use represents the state of the art in plant biotech.

Dr Ton added: «Plant immunity that is controlled by a single resistance gene, on which most conventional breeding programs are based, is comparably easy to overcome by a pathogen.

Of the locations sampled in the study, resistance genes that are most likely to be mobile and able to jump from one bacterial strain to another were found in the highest numbers in the chicken coops of villagers in El Salvador and in the outgoing «gray» water from the sewage treatment plant outside Lima.

Members of a family that includes the apoptosis regulator APAF1 (apoptotic - protease - activating factor 1), mammalian NOD - LRR proteins (also known as NACHT - LRR proteins or CATERPILLERs) and plant disease - resistance gene products.

As for the wastewater treatment plant, Dantas called it the perfect storm for transmitting antibiotic resistance genes.

Foreign Agricultural 4 months Global Research Team Identifies Pathogen Gene that Wheat Plants Detect to «Switch On «Resistance

Using plant biotechnology we have introduced two resistance genes of a wild potato into a modern potato variety.

An assessment of the risks associated with the use of antibiotic resistance genes in genetically modified plants: report of the Working Party of the British Society for Antimicrobial Chemotherapy.

... the argument that occasional transfer of these particular resistance genes from GM plants to bacteria would pose an unacceptable risk to human or animal health has little substance.

Shea N. Gardner & Anurag A. Agrawal — 2002 (8)([email protected]) Keywords: evolution of resistance, induced versus constitutive defence, major gene resistance, phenotypic plasticity, plant - insect interactions, quantitative characters

The pair work together to develop detection methods for new and emerging tomato viruses, identify the tomato genes responsible for virus resistance, and make this information available to plant breeders.

For the rice plant to effectively combat blast, scientists at IRRI are combining into the same rice type different race - specific genes and genes conferring quantitative resistance.