A Conversation for The United Bedroom Confederacy
Application for the UBC
Researcher 185550 Posted Jun 26, 2003
Viral defences would be absolutely sterling!
Truly, you are a goddess!
Application for the UBC
Laura Posted Jun 26, 2003
Well, the absolute basics are that plants can shed infecte leaves to prevent viruses and other infections from spreading.. Just a sec and I'll give you the genetics..
Application for the UBC
Laura Posted Jun 26, 2003
Found it , will type it up in bits..
The Hypersensitive Response (HR)
To kill the pathogen directly, genes such as chitinases and glucanases are swithced on, along with genes for biosyntheses of phyroalexins
Hydrogen peroxide is also produced
to restrict pathogen growth, genes for lignin biosynthesis are also induced
Application for the UBC
Laura Posted Jun 26, 2003
Host resistance
within a species, some plants have developed genetically inherited ways of recognising that they are being attacked and resisted by disease
Plants do not produce antibodies and don't have a ciculatory system. Therefore each cell must be capable of recognising pathogen attack and defending against it
Application for the UBC
Laura Posted Jun 26, 2003
erm, do you need the basic stuff, like having a waxy cuticle to keep out pathogens, or can you sort that?
anyway
Heritable resistance genes
recently, a number of resistance genes have been cloned from plants
many of these posess similar features
the proteins they encode often contain region involved in recognition, and a signalling domain
attempts are now being made to engineer resistance genes into commercial cultivators by transformation, removing the need for expensive backcross programes
Application for the UBC
Laura Posted Jun 26, 2003
gene-for-gene theory
a gene product in the plant recognises the product of a gene (Avirulance gene) in the pathogen, and this recognition triggers hypersenstve defense response.
There's more, but it get's complex, and hard to explain without diagrams. bed now though, tired
Application for the UBC
Laura Posted Jun 26, 2003
Think might just about manage a bit more, mind the spelling however
Systematic acquired response
Once the plant has undergone HR, it is often better able to resist subsequent attack, including by other pathogens and in other parts of the plant
This systematic acquired resistance has been used as a means of 'immunising' plants, and chemicals have been developed for this
Application for the UBC
Flying Betty- Now with added nickname tag! Posted Jun 26, 2003
Uh oh, no viruses (viri?) for me, please!
Unless, of course, they're computer viruses.
*Carefully avoids stepping on any test tubes*
Application for the UBC
Mooing Platypus (formerly known as Gaia) Posted Jun 27, 2003
*...awakes up from long slumber to discover a big converstaion has been going on while she wasn't looking*
Plant viruses. Cool. I never thought about the fact that plants can be atacked by viruses as well. Wow. Not that i got much of that stuff, but I am after all, only in high school. Which reminds me that i must still put that one peanut plant into a bigger pot or it will surely shrivel up and die. I will promptly see to that.
Oh, and i must water my cacti, it's been a while
(Cacti are about the only plants that i can keep really healthy on my own, because i only have to remember to water them about once a month)
-----
Well, then I will go about tending the vegetation of my Republic.
Application for the UBC
Laura Posted Jun 27, 2003
Plants get viruses alright
Yup, cacti are nice and easy to look after, you just have to remember not to water them mid October-March, and feed them a bit in the summer. Easy.
Application for the UBC
Mooing Platypus (formerly known as Gaia) Posted Jun 27, 2003
The UBC seems to be going through troubled times. First Penguins, then Computers, now we are even fearing the plants !!
But no, I believe the plants are quite happy so far.
Application for the UBC
Researcher 185550 Posted Jun 27, 2003
Thank you so much Unc!
and for going off. I figured you'd stop sooner.
My room has no plants, I think I'm safe from them.
Key: Complain about this post
Application for the UBC
- 121: Researcher 185550 (Jun 26, 2003)
- 122: Laura (Jun 26, 2003)
- 123: Researcher 185550 (Jun 26, 2003)
- 124: Laura (Jun 26, 2003)
- 125: Laura (Jun 26, 2003)
- 126: Researcher 185550 (Jun 26, 2003)
- 127: Laura (Jun 26, 2003)
- 128: Laura (Jun 26, 2003)
- 129: Laura (Jun 26, 2003)
- 130: Laura (Jun 26, 2003)
- 131: Flying Betty- Now with added nickname tag! (Jun 26, 2003)
- 132: Laura (Jun 27, 2003)
- 133: Mooing Platypus (formerly known as Gaia) (Jun 27, 2003)
- 134: Laura (Jun 27, 2003)
- 135: Mooing Platypus (formerly known as Gaia) (Jun 27, 2003)
- 136: Laura (Jun 27, 2003)
- 137: Mooing Platypus (formerly known as Gaia) (Jun 27, 2003)
- 138: Laura (Jun 27, 2003)
- 139: Researcher 185550 (Jun 27, 2003)
- 140: Mullet (Jun 27, 2003)
More Conversations for The United Bedroom Confederacy
Write an Entry
"The Hitchhiker's Guide to the Galaxy is a wholly remarkable book. It has been compiled and recompiled many times and under many different editorships. It contains contributions from countless numbers of travellers and researchers."