29. Membrane Disrupters And Lipid Biosynthesis Inhibitors

Front 1

what is structure of paraquat and diquat?

Back 1

p.227

Front 2

what are resonance stabilized free radical form of paraquat?

Back 2

p.227

Front 3

how are bipyridilium herbicides used?
and mech of action?

Back 3

mech: form stable free radicals, generate ROS, damage plant tissue, plant appear frost bitten from cell membrane destruction, reduce photosynthesis

applied to foliage of weeds as general contact herbicide

Front 4

mech of action of protox inhibitors(diphenyl ethers and related herbicides)?

Back 4

p.228

Front 5

how do thoilcarbamate herbicides act?

Back 5

mainly used to protect corn by working with atrazine, inhibit shoot growth of germinating seeds, kill grass weeds and broadleaf

Front 6

why must thiolcarbamate be incorporated into soil?

Back 6

they are volatile compounds

Front 7

major thiolcarbamate herbicides for corn in US?

Back 7

EPTC, butylate use with safener or extender

Front 8

how are EPTC and butylate metabolized? what is critical intermediate in mode of action of butylate?

Back 8

sulfoxidation activate for reaction with GSH, sulfoxide metabolism critical intermediate for mode of action

Front 9

what is an example of a safener used with butylate or EPTC?

Back 9

dichlormid (elevate GSH and GSH transferase activity)

Front 10

how do extenders affect thiocarbamate herbicide? give an example of an extender

Back 10

example- dietholate

slow breakdown in problem soils

Front 11

what does acetyl coa carboxylase do?

Back 11

first step in fatty acid biosynthesis
acetyl COA to malonyl COA

Front 12

inhibitors of acetyl coa carboxylase?

Back 12

free carboxylic acid, CoA ester, phenoxyphenoxyproprionic acid (PPP), cyclohexanediones