Lecture Intro to Plant Pathology + Our First Intro Lab By Karl Pruitt Jr.

Everyone was very excited and very thrilled for our first intro lecture which was taught by our very own Dr. Karolina Mukhtar. Our first lecture was based solely on the introduction into Plant Pathology and it’s extensive  history .

Eukaryotic cells possess internal, membrane-bound organelles and a distinct nucleus that physically separates the genetic material of the cell from the all of the other parts of the cell. All protists, fungi, plants, and animals are composed of eukaryotic cells. Since plants are eukaryotic they can become sick and ill they also have signals and immune responses. We began to discuss plant pathogens  and the distinct types of pathogens which are biotrophs, and necrotrophs. These pathogens cause the same ending effect upon the plant the only difference is the way that it occurs. Biotrophic pathogens do not immediately kill their host they instead coexist within the living organism trying to keep them alive for as long as possible continuing to grow and grow. On the other hand, we have necrotrophic pathogens in which completely drain its host not allowing it to survive but rapidly growing and spreading until the host is left lifeless. There is also hemibiotrophic pathogens which are  pathogens that possess the ability to switch between necrotrophic and biotrophic  

There are many organisms that cause plant disease which are

  • Nematodes  a large multi-cellular organism any unsegmented worm of the phylum Nematode, having an elongated, cylindrical body;  roundworm.   
  • Viruses an agent that typically consists of a nucleic acid molecule in a protein coat is too small to be seen by light microscopy and is able to multiply only within the living cells of a host.
  • Bacteria  constitute a large domain of prokaryotic microorganisms.
  • Fungi and oomycetes are eukaryotes

Bacterial plants were described in the 1870’s and by the end of the 19th-century, pathologists knew why plants got sick.

We also had our first lab which was reviewing the microbiological techniques. Within this lab, we were able to learn many crucial techniques that will be needed in the near future as we dive deeper into the outpace curriculum. We also were able to grow e-coli on growing plates we did this by using a delicate procedure that is called 

streaking. Not only did we grow bacteria on the growth plates but also inside the different tubes that contained media and in tubes that contained broth for the bacteria.

 
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