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Latest Plant pathology Stories

2009-04-02 11:04:48

As a major food source for much of the world, rice is one of the most important plants on earth.Keeping it safe from disease has become, in part, the task of a group of three researchers from Iowa State University and one from Kansas State University.The researchers are looking at two bacterial diseases of rice. The most costly is bacterial blight of rice, which is caused by a bacterium called Xanthomonas oryzae pathovar oryzae, and can diminish yield by up to 50 percent."This is the most...

2009-03-26 10:15:50

Both plant and human diseases that can travel with the wind have the potential to spread far more rapidly than has been understood, according to a new study, in findings that pose serious concerns not only for some human diseases but also a new fungus that threatens global wheat production.The research, done by scientists at Oregon State University and other institutions, concluded that invading diseases do not always progress in an orderly, constant rate. These historical studies of both...

2009-03-25 15:23:01

Canadian scientists say they've created a new class of green fungicides to provide a more environmentally friendly alternative to conventional fungicides. The University of Saskatchewan researchers led by Professor Soledade Pedras say their new fungicides -- called paldoxins -- can duplicate the work of conventional pesticides in helping protect corn, wheat and other crops that are used for food and biofuel production. But the scientists said their new fungicides also can help fight the...

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2009-03-23 11:24:23

Exploiting a little-known punch/counterpunch strategy in the ongoing battle between disease-causing fungi and crop plants, scientists in Canada are reporting development of a new class of "green" fungicides that could provide a safer, more environmentally-friendly alternative to conventional fungicides. They will report on the first pesticides to capitalize on this unique defensive strategy today at the 237th National Meeting of the American Chemical Society. Developed with sustainable...

2009-02-03 16:21:22

Relationship between chile peppers' heat level and plant disease resistance studiedPhytophthora blight, caused by Phytophthora capsici, is a major plant disease that affects many crop species worldwide, including chile peppers in New Mexico. Farmers' observations suggested that Phytophthora capsici caused less damage in pepper crops of the hot pepper varieties than low-heat pepper varieties.A study published in the October 2008 issue of HortScience by the research team of Mohammed B. Tahboub...

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2008-09-24 09:54:57

North Carolina State University scientists and colleagues have completed the genome sequence and genetic map of one of the world's most common and destructive plant parasites "“ Meloidogyne hapla, a microscopic, soil-dwelling worm known more commonly as the northern root-knot nematode. The research could help lead to a new generation of eco-friendly tools to manage the ubiquitous parasitic worm, which, along with other species of root-knot nematode, causes an estimated $50 billion in...

2008-09-07 03:00:19

By Marina, Maria Maiale, Santiago Javier; Rossi, Franco Ruben; Romero, Matias Fernando; Rivas, Elisa Isabel; Garriz, Andres; Ruiz, Oscar Adolfo; Pieckenstain, Fernando Luis The role of polyamine (PA) metabolism in tobacco (Nicotiana tabacum) defense against pathogens with contrasting pathogenic strategies was evaluated. Infection by the necrotrophic fungus Sclerotinia sclerotiorum resulted in increased arginine decarboxylase expression and activity in host tissues, as well as putrescine and...

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2008-04-03 08:45:00

A research team from the Virginia Bioinformatics Institute at Virginia Tech has identified an enormous superfamily of pathogen genes involved in the infection of plants. The Avh superfamily comprises genes found in the plant pathogens Phytophthora ramorum and Phytophthora sojae. The pathogen genes produce effector proteins that manipulate how plant cells work in such a way as to make the plant hosts more susceptible to infection. The results suggest that a single gene from a common ancestor...

2007-12-31 15:00:20

By Garden Variety CURTIS SMITH For the Journal Q: I want to use my own garden soil and homemade compost for my flower and vegetable garden transplants this year. How deep should I make a tray of soil to be pasteurized in the barbecue? The New Mexico State University Web site mentioned heating the soil to 140 degrees for a half-hour to kill bacteria, viruses and insects or 180 degrees to include weed seed. What happens to the soil's beneficial insects and mycorrhizae fungi? -- R.B....

2005-08-22 14:18:51

Blacksburg, Va., August 22, 2005 "“ Virginia Tech scientists say that there has been a change in the status of the fungus causing Asian Soybean Rust but that the new information is still too preliminary for any action on the part of the Commonwealth's soybean producers. A single cluster of six urediniospores found at Virginia Tech's Tidewater Agricultural Research and Extension Center in Suffolk was identified by morphological characteristics as matching the description of the fungus....


Latest Plant pathology Reference Libraries

Soybean Cyst Nematode, Heterodera glycines
2014-01-12 00:00:00

The soybean cyst nematode (Heterodera glycines) is a parasitic worm that infects soybean plants, and other legumes, across the world. It is thought to be native to Asia, but was found in the United States in 1954 and in Colombia in the 1980’s. It can be found in Italy and Iran and its most recent sightings have occurred in Brazil and Argentina, two major areas where soybeans are grown. These worms are highly damaging to American soybean crops, costing the industry as much as 500 thousand...

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Word of the Day
conjunto
  • A style of popular dance music originating along the border between Texas and Mexico, characterized by the use of accordion, drums, and 12-string bass guitar and traditionally based on polka, waltz, and bolero rhythms.
The word 'conjunto' comes through Spanish, from Latin coniūnctus, past participle of coniungere, to join together; see conjoin