Correct option is D
The correct answer is (d) 12-Hydroxy-(+)-7-isojasmonate. Tuberonic acid is a hydroxylated derivative of jasmonic acid, specifically 12-hydroxyjasmonic acid. It plays a significant role in plant physiological processes such as tuber formation in potatoes and other plant developmental activities. Methyl jasmonate and cis-jasmone are related to the jasmonate family but do not represent tuberonic acid.
Information Booster:
- Tuberonic acid (12-Hydroxyjasmonic acid) is a jasmonic acid derivative responsible for tuber induction in plants like potatoes.
- Jasmonates, including tuberonic acid, are involved in plant responses to biotic and abiotic stresses.
- Tuberonic acid regulates key processes such as senescence, secondary metabolism, and tuberization.
- Methyl jasmonate acts as a signaling molecule but is chemically different from tuberonic acid.
- Jasmonoyl-1-β-glucose is a conjugate that is primarily involved in jasmonate metabolism.
Additional Knowledge:
(a) Methyl jasmonate:
This is a volatile esterified form of jasmonic acid, involved in plant signaling. It is responsible for activating defense responses against pathogens and herbivores. It is not referred to as tuberonic acid but plays a role in stress responses.
(b) cis-Jasmone:
This is a structurally distinct jasmonate derivative that functions as a signaling molecule for plant-insect interactions. Unlike tuberonic acid, it lacks the hydroxylation at the 12th carbon.
(c) Jasmonoyl-1-β-glucose:
This is a conjugated form of jasmonic acid involved in its metabolism and storage. It is not associated with tuber induction but plays a role in maintaining jasmonate levels.
(d) 12-Hydroxy-(+)-7-isojasmonate:
This is the correct answer and corresponds to tuberonic acid. It is hydroxylated at the 12th carbon and actively involved in inducing tuber formation and other growth processes
