Protection of plants 2

Question 1

what are hostmediated BCAs

Answer 1

signals from the host plant that induce gene expression and resistance

Question 2

what are SAR and ISR and what generates this response

Answer 2

Systematic Aquired Resistance - responses generated through plant cell necrosis
Induced Systematic Resistance - induced by plant growth promoting bact and fungi

Question 3

what are the plant growth promoting bact and fingi

Answer 3

rhizobacteria - symbiotoc - live in/around roots

mycorrhizal fungi

Question 4

what is PVX and what are the features

Answer 4

Potato Virus X - mechanical transmission, no insect or fungal vectors
transient expression of genes

Question 5

what is pathogen derived resistance

Answer 5

engineering bit of microbes into plants to confer resistance against disease

Question 6

two examples of pathogen derived resistance

Answer 6

viruses - plants made resistant Tobacco Mosaic Virus by adding in TMV coat protein
bacteria - engineer ROCTase into tobacco causes resistance

Question 7

what is maize smut and what does it do

Answer 7

a fungus

produces killer toxins that kills other strains - they themselves are immune

Question 8

why cant we persue adapting bacteria/fungi’s pathogenicity mechanisms

Answer 8

could result in super pathogens

GM not universal