xylella造句

• Was Xylella fastidiosa detected outside of America as yet?
• It thus spreads Xylella very fast.
• Much has been learned now that the sequences of xylella's 2, 800 genes are in hand.
• But while this system has been considered fundamental to causing disease, xylella wreaks havoc just fine without it.
• In 1989, however, a new Xylella vector _ the glassy-winged sharpshooter _ appeared in California.
• Until recently, the insect mainly responsible for spreading Xylella in California was a leafhopper called the blue-green sharpshooter.
• Likewise, oleander, a common landscaping plant in California, serves as a reservoir for " Xylella ".
• Scientists said xylella's genome has already begun teaching biologists lessons about how pathogens evolve and about the destruction they cause.
• Simpson suggested that such wholesale importation of genes from other pathogens might be what turned xylella from benign to disease-causing.
• The sharpshooter has the " ability to spread Xylella fsatidoisa, the bacterium that causes Pierce s disease " ( Power 148 ).
• Head says the disease is caused by a bacterium, ` Xylella fastidiosa,'that is spread by the sting of a leafhopper.
• Once injected, xylella lives hidden in the plant's circulatory system, a network of water-conducting tissues known as the xylem.
• The sharpshooter is a very effective transmitter of a bacterium, Xylella fastidiosa, that blocks the water vessels in plants, eventually killing them.
• While designated a single species, Xylella fastidiosa is made up of numerous strains, each of which specializes in victimizing a different kind of plant.
• The researchers also discovered that xylella has a penchant for sequestering iron, something that may explain the anemic, yellowing leaves symptomatic of the disease.
• By July 2015, " Xylella fastidiosa " had reached Corsica; by October 2015, it had reached Mainland France, near Nice.
• The scientists also reported finding at least 83 genes in Xylella fastidiosa that came from other bacteria, including some that help fight off a plant's natural defenses.
• Sponsored by the State of Sao Paolo Research Foundation in Brazil, 200 scientists in 34 molecular biology labs worked for two years to sequence the genome of the bacteria Xylella fastidiosa.
• Their feeding method, along with their voracious appetite for so many different hosts, makes glassy-winged sharpshooters an effective vector for the " Xylella fastidiosa " bacterium.
• Pierce's Disease _ Just as mosquitoes deliver malaria to humans, a little insect known as the sharpshooter infects grape vines with the bacterium Xylella fastidiosa when they probe the leaves.