By Blake Jackson
Pennsylvania's beloved potato industry faces a potential challenge from newly identified bacteria strains, according to Penn State researchers. Their findings, published in Systematic and Applied Microbiology, shed light on previously unknown pathogens that could impact potato yields.
The researchers collected samples from potato fields exhibiting symptoms of blackleg and soft rot, diseases caused by bacteria like Pectobacterium and Dickeya. They analyzed 456 samples, uncovering six new Pectobacterium species and one new Dickeya strain never before seen in Pennsylvania. One Pectobacterium species was even a first for the entire U.S.
"These findings could inform methods for detecting and managing these pathogens," says Carolee Bull, lead author and professor of plant pathology. While some Pectobacterium species were known, recent years have seen a surge in new strains, leading to significant yield losses in the Northeast.
This research highlights the importance of monitoring not only established pathogens but also emerging threats like Dickeya solani, notorious for severe outbreaks in Europe. Understanding which pathogens infect specific potato varieties will be crucial for growers, Bull emphasizes.
The identified bacteria include P. actinidiae (a first for the U.S.), P. polonicum, P. polaris, P. punjabense, P. parmentieri, and P. versatile, all new to Pennsylvania. Additionally, P. carotovorum, D. dianthicola, and P. brasiliense were confirmed, as expected.
The researchers' next steps involve testing the pathogens' impact on potatoes, developing detection tools, and exploring new management strategies. This proactive approach aims to safeguard Pennsylvania's potato industry and ensure the continued enjoyment of its famous snacks.
Photo Credit: gettyimages-npantos
Categories: Pennsylvania, Crops, Fruits and Vegetables