Simply compare the similarities and differences between jasmonic acid and abscisic acid?

Compare the similarities and differences between jasmonic acid and abscisic acid as follows:

Similarities:

1. Inhibition of growth: Jasmonic acid and abscisic acid can inhibit the growth of plants.

2. Promote shedding: Both of them can promote the shedding of plant organs.

3. Promote stomatal closure: Under drought conditions, both of them can induce stomatal closure to reduce water loss.

4. Enhance stress resistance: Both jasmonic acid and abscisic acid can improve the resistance of plants to stress.

Difference:

1, structural difference: jasmonic acid and abscisic acid have different structures. For example, jasmonic acid has ester ring, abscisic acid does not. This structural difference leads to differences in chemical properties and physiological effects.

2. Induced dormancy: Jasmonic acid can induce plants to enter dormancy, but abscisic acid can't.

3. Effect on seed germination: abscisic acid can inhibit seed germination, but jasmonic acid has no such effect.

4. Effect on pollen germination: Jasmonic acid can inhibit pollen germination, but abscisic acid has no such effect.

5. Effect on organ aging: Jasmonic acid can promote organ aging, but abscisic acid has no such effect.

6. Regulation of stomatal movement: Jasmonic acid can inhibit stomatal movement, but abscisic acid has no such effect.

Chemical structure of jasmonic acid

Jasmonic acid is an oxidized oil and a derivative of oxidized fatty acid. It is biosynthesized by linolenic acid in chloroplast membrane. The synthesis started with the conversion of linolenic acid into 12- oxophytodienoic acid OPDA, followed by reduction and three rounds of oxidation to form (+)-7- isojasmonic acid. Only the transformation of linolenic acid into OPDA occurred in chloroplasts; All subsequent reactions take place in peroxisome.

Jasmonic acid itself can be further metabolized into active or inactive derivatives. Methyl jasmonic acid is a volatile compound which may be responsible for plant communication. Jasmonic acid combines with amino acid isoleucine (Ile) to produce JA-Ile, which is a JA derivative required by JA signal known in xxx at present. Jasmonic acid decarboxylates to form cis jasmonic acid esters.