SECRETOR.025 - Jim Bidlack BIO 5354/4354 PLANT ANATOMY Lecture 25 Secretory Structures I II Function of secretory structures A Accumulation or

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Jim Bidlack - BIO 5354/4354 PLANT ANATOMY Lecture 25 - Secretory Structures I. Function of secretory structures A. Accumulation or release of toxic (waste) substances B. Deter herbivores C. Guide pollinators D. Accessory features of trichomes (secretory or non-secretory) 1. Alter photosynthesis 2. Regulate leaf temperature 3. Regulate water loss 4. Water absorption (trichoblast) II. Types of secretory products - classification according to nature of the product A. Products necessary for the plant's own fundamental needs - removal of excess water or salts, or accumulation of waste products 1. External a) Hydathodes - secrete water b) Salt glands - secrete inorganic (waste) salts c) Digestive glands - help digest victims 2. Internal a) Resin ducts - accumulate resin (mostly terpenes) b) Mucilages - slimy carbohydrate formed to the inside c) Oils - accumulations within - can be waxy d) Gums - result from modifications of the CW e) Laticifers - secrete latex as a waste product f)
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This note was uploaded on 03/27/2012 for the course BIO 5354 taught by Professor Bidlack during the Fall '11 term at University of Florida.

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