PLANT RESPONSE TO WATER STRESS

Question 1

plant response

Answer 1

imposed conditions
genetic background
physiological status

Question 2

osmotic adjustment for turgor regulation

Answer 2

maintains water absorption and cell turgor in drought conditions
sustain higher photosynthetic rate and expansion growth under drought

Question 3

elastic adjustment of cell wall

Answer 3

the relationship between cell volume and turgor
increases cell wall elasticity, delay the loss of turgor

Question 4

Short term responses

Answer 4

decrease in stomatal conductance
alternations in hydraulic conductivity
osmotic adjustments
elastic adjustments

Question 5

Long term responses

Answer 5

induction of drought induced genes
changes in growth rate including root architecture

Question 6

survival

Answer 6

stomatal closure
limitation of shoot growth
decrease of photosynthesis
increase solute accumulation

Question 7

Osmotic adjustment

Answer 7

a lowering of solute potential due to net solute accumulation in response to drought stress