The first-order (primary afferent) cell bodies of the dorsal column–medial lemniscal system are found in which of the following structures?

I - Chloramphenicol acetyltransferase

(CAT)

A - Herpes simplex virus (HSY)

II - Luciferase (lux)

B - Pacific jellyfish (Aequoria

victoria)

III - Green fluorescent protein

(GFP)

C - Bacteria, firefly

IV - Thymidine kinase (Tk)

D - E. coli transposon Tn9

            COLUMN I 

      (environmental factor )

              COLUMN II

           (primary effects)

            COLUMN III

        (secondary effects)

A) Water deficit

i) Hypoxia,  Anoxia

a) Membrane dysfunction

B) High temperature

ii) ROS production

b) Reduced cellular and metabolic activities,

Leaf abscission,

Ion cytotoxicity and Cavitation

C) Trace element toxicity

iii) Photo inhibition

c) Reduced respiration,    

Fermentative metabolism,       Inadequate ATP production ,

 ROS production and

 Stomatal closure

D) Flooding and soil compaction

iv) Membrane destabilization

d) Inhibition of PSII repair

E) Chilling

v) Cell dehydration and Hydraulic resistance

e) Disruption of metabolism

F) High light intensity

f) Photosynthetic and respiratory inhibition, ROS production