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Lecture+8-Jasmonic+acid+_+Plant+Growth

Lecture+8-Jasmonic+acid+_+Plant+Growth - Jasmonic acid...

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9/26/2011 1 Jasmonic acid & Plant Growth Physiological roles of JA Nectar production in rapeseed Flower development Promotes senescense Germination inhibition Promotes tuber formation Promotes fruit ripening and fruit abscission Pigment formation promotion Plays a major role in plant defense 13.24 Steps in the pathway for conversion of linolenic acid (18:3) to jasmonic acid (Part 1) Biosynthesis of JA (Octadecanoid pathway)
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9/26/2011 2 13.24 Steps in the pathway for conversion of linolenic acid (18:3) to jasmonic acid (Part 2) Plant defense strategies Constitutive defenses: toxic chemicals synthesized and stored Induced defenses: toxic chemicals synthesized in response to a damage 13.25 Proposed systemin signaling pathway Insect damage in plants induces JA responses. Chemicals found in saliva function as elicitors. These elicitors induces JA synthesis at the site of cell damage. JA is transported long distance to other tissues and induce
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