HOME >> BIOLOGY >> NEWS
Genetic defenders protect crops from fungal disease

STANFORD, CA Like waves of soldiers guarding a castle gate, multiple genetic defenders cooperate to protect plant cells against powdery mildew disease, according to a new study. Powdery mildew is a common fungal infection in plants that attacks more than 9,000 species, including many crops such as barley and wheat, and horticultural plants such as roses and cucumbers. The researchers, including Shauna Somerville and Mnica Stein of the Carnegie Institution's Department of Plant Biology, are the first to document how these defense genes team up in plants. The discovery could help combat fungal parasites that devastate crops and cost growers billions of dollars in pesticides every year.

The study, published in the November 18 issue of the journal Science, describes powdery mildew infection in the mustard relative Arabidopsis thaliana. Each species of mildew is host-specific, meaning it can infect some plant species, but not others. By disabling protective genes in Arabidopsis, the researchers were able to infect the plants with species of powdery mildew that normally attack peas or barley, revealing much about how plants use genes to fight infection.

"Most plants are resistant to the majority of pathogens they encounter, but the basis for this resistance was unknown," Somerville said. "Identifying these genes has provided us with the first insight into how plants defend against multiple pathogens."

Once a powdery mildew infection takes hold, it covers the plant with fuzzy splotches, while sapping precious nutrients. At the cellular level, the fungal spores invade healthy plant cells and form root-like feeding structures called haustoria. The plant cell wall is the primary barrier to this invasion and one of the defense genes described in the current study, called PEN2, prevents the fungus from penetrating cell walls in the first place.

If this first line of defense breaks down, as it does in about 5 to 25 percent of normal Arabidopsis
'"/>

Contact: Dr. Shauna Somerville
ssomerville@stanford.edu
650-325-1521 x257
Carnegie Institution
17-Nov-2005


Page: 1 2 3

Related biology news :

1. Genetic variation helps to understand predisposition to schizophrenia
2. Genetic factors strongly shape how peers are chosen
3. Genetic analysis finds greater threat in frog-killing fungus
4. Genetic diversity in honeybee colonies boosts productivity
5. 2007-2008 Genzyme/ACMGF Clinical Genetics Fellowship In Biochemical Genetics award winner announced
6. Maynard Olson receives $500,000 Gruber Genetics Prize
7. Genetic defect links respiratory disease and congenital heart disease
8. Cell Press announces new partnership with the American Society of Human Genetics
9. Genetic fellow traveler discovered in Alzheimers
10. Genetic roots of bipolar disorder revealed by first genome-wide study of illness
11. Health disparities -- Genetics, society and race play an important role in access to healthcare

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/14/2019)... LAKE CITY, and MARTINSRIED, Germany (PRWEB) , ... ... ... in high-throughput antibody screening and characterization, announced today that they have opened a ... Carterra’s platform has fueled the need for the new office. , The Munich ...
(Date:8/14/2019)... ... ... Representatives with MyBioGate announced that China Focus@Biotech Week will be held September ... projects connect with Chinese pharma and investors in healthcare innovation,” said Miao Guo, Vice ... as a part of Biotech Week Boston – the annual biotech festival at the ...
(Date:8/14/2019)... TORONTO (PRWEB) , ... August 13, 2019 , ... ... Cancer Medicine Team, Division of Molecular Pathology, Institute of Cancer Research (ICR) in ... (5pm BST/UK) to learn about the process of biomarker and companion diagnostic development ...
Breaking Biology News(10 mins):
(Date:8/14/2019)... Pa. (PRWEB) , ... August 13, 2019 , ... ... nuclear receptor and in vitro toxicology testing solutions, announced the appointment of Mark ... industry experience to the Board. , Mark McLoughlin will lend his healthcare expertise ...
(Date:8/7/2019)... ... ... Locus Agricultural Solutions (Locus AG) reports record levels of carbon sequestered in ... ® , which is pulling up to 121% more carbon into the soil than ... from the treatment of almonds, cherries, turf/sod, grapes and citrus across the U.S., as ...
(Date:8/6/2019)... , ... August 05, 2019 , ... ... Casarella has been recognized as a distinguished leader by PharmaVOICE magazine, earning him ... an article in the magazine’s July/August special issue. , As the executive vice ...
(Date:7/30/2019)... ... July 30, 2019 , ... The summer season has ... company. Not only has the company already hosted many of its signature cooking ... to its guests. , With Lajollacooks4u’s Private Cooking Parties, guests prepare and enjoy ...
Breaking Biology Technology:
Cached News: