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.
Leaving aside the fact that it’s two words, the phrase had been around a long time already, at least since Henry David Thoreau compared it with a certain fungus, phytophthora infestans, 170 years ago ... READ MORE ... .
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 ...
With our recent rainy weather and storms, I am not surprised that we diagnosed late blight (Phytophthora infestans) in the University of VermontPlant Diagnostic Clinic in late August. So far, it has been found in a garden and a ....
The research, led by scientists from Huazhong Agricultural University, explores how the Phytophthora infestans effector Pi22922 targets the chloroplast protein StFC-II in potatoes ... infestans.
Hello to you as autumn whispers in the crisp morning and evening air ...Uninvited mushrooms ... It’s distinct from the most common tomato issue around here during this time of year, late blight, which is caused by the fungus Phytophthora infestans ... .
The disease late blight has been found in Presque Isle, potato industry experts said ... 9 ... Late blight is caused by Phytophthora infestans, a fungus-like organism that can infect potatoes and plant leaves ... More articles from the BDN ....
The study's results show that the pathogen, Phytophthora infestans, is very adept at fighting off potato late blight disease resistance ...Evolution of Phytophthora infestans on its PotatoHost since the ...
Photo by Pixabay via Pexels. By Stephen Beech via SWNS...Lead authorAllison Coomber said ... The findings study’s results show that the pathogen, Phytophthora infestans, is very adept at fighting off potato late blight disease resistance ... Coomber said ... Dr ... .
(HT ) ...Late blight disease, a fungal infection caused by Phytophthora Infestans, is a significant threat to potato crops, causing substantial yield losses and reducing tuber quality ... Proper drainage in fields key ... Himachal at high risk ... ....
A new study challenges the common theory that the devastating potato blight pathogen Phytophthora infestans originated in Mexico... of Phytophthora infestans towards Colombia, Phytopathology (2024).
We might remember potato blight from the Great Famine that struck Ireland in the 1840s... The relevant blight in the case is Late blight caused by a fungus-like organism known as Phytophthora infestans ... Ireland has sent up the red flags ... CAA and OSBPI ... .
More than 60 years ago, Gallegly bred the first tomato that could stand up to Phytophthora infestans, otherwise known as tomato blight ... In the right conditions, Phytophthora infestans, which is Greek ...
Tomato plants emit a scent to resist bacterial attacks ... The IBMCP team has also demonstrated its usefulness in other crops, such as potatoes, where it has increased resistance to Phytophthora infestans ... More information ... DOI. 10.1093/hr/uhad248 ... Citation.
... about the effects and spread of the plant pathogen—now known as Phytophthora infestans—that caused the 1840sIrish potato famine and that continues to vex breeders of potatoes and tomatoes.
The popular tomato variety Himshekhar has been the most affected ...Late blight, caused by the phytophthora infestans fungus, is a prevalent disease that significantly damages tomato crops and can lead to rapid crop failure if not properly managed ... ....
Rutland Herald
31 Aug 2024
Rutland Herald
31 Aug 2024