BIO353H5 Study Guide - Final Guide: Plant Nutrition, Root Nodule, Cytokinin
Document Summary
Indehiscent (won"t split open to release seeds) arabidopsis mutants. Alcatraz (alc), shatterproof (shp1/2), indehiscent (ind) are the three mutants to know. Useful for agriculture because you can delay fruit explosions til after harvesting, so you can control where things are planted (if at all). Can also use this on harmful plants to prevent spreading. Mutants because the part of the fruit that"s meant to have cell death doesn"t have cell death to the extent it"s supposed to (or at all), so the fruit doesn"t split open. Cytokinins (cks) are plant hormones that: promote cell division in the shoot delay leaf senescence regulate nutrient allocation promote root nodule development contribute to environmental signalling and pathogen responses regulate auxin action and distribution. Increasing ck levels: enhance shoot growth decrease apical dominance delay leaf senescence decrease root growth: cks are synthesized by ipts, cyp735as and logs (lonelyguy, cks can be reversibly and irreversibly inactivated.
