Phytophthora infestans is an oomycete that causes the serious potato disease known as late blight or potato blight. (Early blight, caused by Alternaria solani, is also often called "potato blight".) Late blight was a major culprit in the 1840s European, the 1845 Irish and 1846 Highlandpotato famines. The organism can also infect tomatoes and some other members of the Solanaceae. At first, the spots are gray-green and water-soaked, but they soon enlarge and turn dark brown and firm, with a rough surface.
Etymology
The genus name Phytophthora comes from the Greek φυτό-, meaning "plant", plus the Greek φθορά, meaning "destruction, ruin." The species name infestans is the present participle of the Latin verb infestare, meaning "attacking, destroying."
Biology
The asexual life cycle of Phytophthora infestans is characterized by alternating phases of hyphal growth, sporulation, sporangia germination (either through zoospore release or direct germination, i.e. germ tube emergence from the sporangium), and the re-establishment of hyphal growth. There is also a sexual cycle, which occurs when isolates of opposite mating type (A1 and A2) meet. Hormonal communication triggers the formation of the sexual spores, called oospores. The different types of spores play major roles in the dissemination and survival of P. infestans. Sporangia are spread by wind or water and enable the movement of P. infestans between different host plants. The zoospores released from sporangia are biflagellated and chemotactic, allowing further movement of P. infestans on water films found on leaves or soils. Both sporangia and zoospores are short-lived, in contrast to oospores which can persist in a viable form for many years.
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First there was a surprise throwback to the pragmatic George Graham teams with Mikel Arteta’s reliance on set-pieces this season, then faint echoes of the near misses and hard-luck stories which blighted the late Arsene Wenger era ... Which is more fun?.
COUDERSPORT — Coudersport borough manager Bev Morris is hanging up her managerial mitts at the end of March, after lengthy service to the county, the region and the community ...Lately it’s been cat colonies, blight, and short-term rentals ... ....
... Red as the brand’s top new 2025 edible, mentioning its early fruit maturity (60-65 days after transplant) and its resistance to two of the biggest tomato scourges – late blight and septoria leaf spot.
Similarities with the 1980 campaign also reverberated through this year’s election when Trump likened the inflation crisis and high prices of Biden’s term to the economic blight that settled on the United States in the late 1970s... .
The timing is also raising questions. In the late aughts, Detroit began gaining international notoriety for its blighted vacant factories, skyscrapers and urban decay – a stark representation of the decline of American industrial might ... .
For a RustBelt city against the ropes in the late '90s, the arena project was bold ... The late Congressman James Traficant helped secure $26 million in federal funding for the arena.
Due to increased heat and early summer moisture, early blight and late blight, two fungal diseases, now make annual appearances in my vegetable garden. I cannot harvest enough tomatoes to can my 50 pints of sauce anymore unless I spray ....
Meanwhile, Li Xuemin, general manager of Yakeshi Senfeng PotatoIndustryCompany, expressed concern over the increasing resistance of diseases like late blight to conventional control methods ... ....
Dr Ijaz stated that smog causes late blight disease and reduces the quality of tubers ... “Infected plants and tubers should be removed and destroyed as soon as late blight develops,” Dr Sajid said.
Farmers are increasingly demanding potato varieties that are higher-yielding and less susceptible to disease, particularly late blight, which caused the Irish Potato Famine of the mid-19th century and thrives in warm and humid conditions.
Conservative MP Bob Blackman called for the legislation to go further to include a levy on tobacco companies' profits to hold them responsible 'for the blight on our population's health' ... My late ...
BiocSol’s first biopesticide products targeting late and early blight in potatoes (Phytophthora infestans and Alternaria solani) and downy mildew in lettuces and grapes have already been ...
Q ... What kind of upkeep would it require?. A ... The American chestnut (over 100 feet tall, 13 feet in diameter) nearly went extinct (possibly fewer than 100 left) during the late 19th century because of a fungal blight called ink spot or chestnut blight ... Q.
Trump’s brand of vulgar realism speaks to the mounting late stage capitalist chaos that is blighting the lives of the many in the name of the few in this land of the unfree.
His three opponents disagree ... “It’s time for a woman to be mayor,” he said ... In the late 1980s, Flagler Village was considered a blighted area and qualified to be a Community Redevelopment Agency to help revitalize the neighborhood, Trantalis noted.
Potter Leader-Enterprise
06 Jan 2025
Potter Leader-Enterprise
06 Jan 2025