Friday, June 14, 2013

REFLECTION

 OVERALL PERFORMANCE

Microbiology has broaden my knowledge in the field of science. As a former non science student i did not know a lot about the science world until i decided to go into the field of Nursing and i needed to take science classes. Microbiology is the first on the list as a pre-requisite course that one needs to take before admitted into the Nursing programme. My expectations were very high when i decided to take my Microbiology class this Summer because it was time to apply into the Nursing program but i couldn't since i have not taken Microbiology. but i became overwhelmed when the class begun and i saw how accumulated the course was.
The lecture was amazing, she got all the time for us and made the class very interesting so that we can enjoy taking the course.We had access to every material we needed to help us excel in this class. I pray for God's abundant grace on her to continue being such a great lecturer. It has not been easy taking this class but i thank God for taking us through.
  

Time has been my major problem in taking this course because we did everything a class would have done in a normal semester for a month. since this was my first class i have ever taken in summer, i did not know how fast running it would be and i know it has affected me greatly. Because i did not have enough time to digest every topic we treated in class as a new emerging science student. what i meant by digesting is not having time to research more on the topics, reading my text book page by page, applying and relating what i have been taught in class to other topics, courses, everyday life, reading health sections of  newspapers and etc.
 
As my best learning skill is listening, researching and explaining things in my own words due to inadequate time and the load of the course in addition to lab, i have not performed to my own expectations and i know to that of my lecturer. My current class grade makes me very sad because i don't know what to expect in the final grade. My greatest worry is the fact that if i get below a "B", it means i will not gain admission into the nursing programme and this was my last class to take. I'm so sad and confuse that i know i can not start my summer until i see my final grade. And the question i keep on asking my self is, what will i get?
 
Even though the class is over, due to the importance i see in Microbiology in my future career and my life as a whole i will take my time and start over with text book because i really want to get the full understanding of the course and research and experiment on things i don't understand. I will call it MY SUMMER PROJECT. i can see Microbiology can be very interesting if you fully understands what you are doing and applying concepts well. And i do not want to miss that part, so at my own parse i will revised the topics since i will surely need its understanding in other courses at the Nursing school only if i pass this course and comes out with not less than a "B" in the final.
 
I WISH YOU ALL A RELAXING AND MEMORABLE SUMMER!!!!!
GOD BLESS US ALL, AMEN!!!!



Thursday, June 6, 2013

INVESTICATION-PLANT VIRUSES

When we hear of microbiology our initial thinking is about microorganisms and human beings but as we all know microorganisms affects us all . It affects human beings, plants, animals and etc. My curiosity made me to investigate about plant viruses






Plant Viruses


 Plant Viruses

 Plant viruses are viruses that infect plants. A virus particle, also known as a virion, is an extremely small infectious agent. It is essentially a nucleic acid (DNA or RNA) enclosed in a protein coat called a capsid. Viral genetic material can be double-stranded DNA, double-stranded RNA, single-stranded DNA or single-stranded RNA. Most plant viruses are classified as single-stranded RNA or double-stranded RNA virus particles. Very few are single-stranded DNA and none are double-stranded DNA particles.

 https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQzdnyWb9AG7pYchGjaCQLgF8nAXK8W3ZUKMolhGUA4HcHnLDEX2g


Plant viruses cause various types of plant diseases, but the diseases do not typically result in plant death. They do however, produce symptoms such as ring-spots, mosaic pattern development, leaf yellowing and distortion, as well as deformed growth. The name of the plant disease is often related to the symptoms the disease produces in the particular plant. For example, papaya leaf curl and potato leaf roll are diseases that cause specific types of leaf distortion. Some plant viruses are not limited to one particular plant host, but may infect different varieties of plants. For example, plants including tomatoes, peppers, cucumbers, and tobacco may all be infected by the tobacco mosaic virus.

Plant Viruses: Transmission


Plant cells are eukaryotic cells that are similar to animal cells. Plant cells however, have a cell wall that is nearly impossible for viruses to breach in order to cause infection. As a result, plant viruses are typically spread by two common mechanisms: horizontal transmission and vertical transmission.

 


 Top Ten Plant Viruses
(1) Tobacco mosaic virus (TMV),
(2) Tomato spotted wilt virus (TSWV),
(3) Tomato yellow leaf curl virus (TYLCV),
(4) Cucumber mosaic virus (CMV),
(5) Potato virus Y (PVY),
(6) Cauliflower mosaic virus (CaMV),
(7) African cassava mosaic virus (ACMV),
(8) Plum pox virus (PPV),
(9) Brome mosaic virus (BMV) and
(10) Potato virus X (PVX),

  The most scientifically important ones are: 1. Tobacco mosaic virus (TMV),  4. Cucumber Mosaic Virus (CMV), 6. Cauliflower Mosaic Virus (CaMV), 9. Brome Mosaic Virus (BMV), 10. Potato Virus X (PVX).



 



 Reference


1. SCHOLTHOF, K. G., ADKINS, S., CZOSNEK, H., PALUKAITIS, P., JACQUOT, E., HOHN, T., & ... FOSTER, G. D. (2011). Top 10 plant viruses in molecular plant pathology. Molecular Plant Pathology12(9), 938-954. doi:10.1111/j.1364-3703.2011.00752.x
2. http://biology.about.com/od/virology/ss/plant-viruses.htm
3. https://www.google.com/search?q=pictures+of+plant+viruses&tbm