Category Archives: Seen at TPDDL

If You Have Grass, Read This!

Written by Taylor Duke — TPDDL Student Worker; Edited by Hannah Ayala — Extension Assistant If you’ve been noticing brown patches in your lawn lately, it’s most likely infected by the pathogen commonly known as Take All Patch. Take All Patch is caused by the soil-borne fungus Gaeumannomyces graminis var. graminis, or as we like to call it here in the lab, “Ggg”. The season of Ggg is upon us and we have been receiving lots of grass samples in the lab that are positive for this pesky fungus. Ggg… Read More →

You Either Lichen or You Do Not Like Em

Written by Hannah Ayala — Extension Assistant Have you ever seen a crusty object or a thin layer growing on your trees or rocks? We’re here to tell you NOT to panic. It might just be lichen, which is not completely a fungi or a bacteria. Lichens are actually made up of a symbiotic relationship between fungi and green algae or cyanobacteria (or even all three!). The alga feeds the fungus through photosynthesis, while the algae receives some food and support from the fungus. Lichens commonly grow on limbs,… Read More →

Soft Spot for Succulents

Written by Hannah Ayala – Extension Assistant Like all plants, your succulent could be suffering because of a plant pathogen, an insect pest, or an abiotic factor. When it comes to succulents, there are some issues that are more common than others. One of the most common problems we find in samples that come into the lab is caused by overwatering. Cacti and other succulents are mostly found in areas with low rainfall. This means that they store more water than other plants, hence their “puffy” foliage. This… Read More →

Student Worker (Oak) Branches Out

Written by Michael Giedraitis – TPDDL Student Worker; Edited by Hannah Ayala – Extension Assistant Background It was an exciting summer and fall at the Texas Plant Disease Diagnostic Laboratory. Alongside all our normal duties involved in operating the clinic, I was given the opportunity to work on the development of a new method for diagnosing oak wilt. Our current protocol is to break down infected branch samples sent to us and set them to incubate on petri plates in specialized media for two weeks. We check these… Read More →

Have you or your beloved Christmas Tree been affected by Dothistroma?

Written by Christina Lanzoni – TPDDL Student Worker; Edited by Hannah Ayala – Extension Assistant ‘Twas the day before Christmas and all through the night Spores were dispersing causing Dothistroma needle blight It’s that time of year again where everyone is out buying Christmas trees to decorate their homes. Without proper care, those trees would not be available for us to put gifts under. One of the most common foliar diseases seen in pine trees is Dothistroma needle blight. It affects the needles of over 30 different species… Read More →