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Auxins Auxin Auxin promotes activity of the vascular cambium and vascular tissues. plays key role in fruit development Cell Elongation: Acid growth hypothesis auxin works ...
Hypothesis and Prediction We know ABA, Auxin We Hypothesize ABA, Auxin Our prediction ABA, Auxin Part I - Experiments Maize rop mutants There are ...
Mutants lacking either auxin or cytokinin Have yet to be found- mutations eliminating Them are lethal Arrowhead- vascular regeneration Acropetal polar movement of auxin ...

The high concentration of the hormone messes up the growth patterns of the weeds – killing them. Because the auxin is weed specific, it doesn’t affect the crops.
This leads to activation of auxin pumps & auxin enters the cells Roots & stems respond differently to auxin: - Auxin inhibits growth of root cells, so cells on upper ...
Auxin: Summary of Effects in Coleoptiles Auxin is produced in tips of coleoptiles very little lateral movement migration to cells directly beneath auxin producing cells ...
* Auxin is the hormone that is apparently primarily responsible for the response of cells to light. * Auxin is the hormone that is apparently primarily responsible for ...
... cell elongation in target tissues Auxin transporters move the hormone from the basal end of one cell into the apical end of the neighboring cell LE 39-7 The Role of Auxin ...
... Auxin and Cytokinin control shoot and root growth High levels of Cytokinin and low levels of Auxin promote shoot development (stems with leaves) High levels of Auxin ...
Modeling the Pathway Signal from older/incipient primordia Auxin flux Auxin concentration Simple model Active vs. Passive transport Modeling the ...
... the processes leading to the death of plant parts or the whole plant Abscission and Senescence Recurring cue is decrease in day length that triggers a decrease in auxin ...
Specific: Auxin maintains apical dominance, blocks leaf abscission, can induce fruit development without pollination. * The natural auxin occurring in plants is ...
... Quick-dip: 500 - 10,000 ppm (0.05 to 1%) Dip base in about 1/2 - 1” for 5 - 10 sec. Easy, consistent, stable If in alcohol… it will evaporate over time and the auxin ...
Cell elongation in response to auxin Other Effects of Auxin Auxin affects secondary growth By inducing cell division in the vascular cambium and influencing ...
Table 33.2 At different concentrations, auxin stimulates or inhibits the elongation of shoots and roots Figure 33.3B STEMS ROOTS 0.9 g/L Figure 33.3A Figure 33.3C Plasma ...
Polar auxin transport is a prominent feature of the shoot-to-root axis Role of polar auxin transport in the embryo Auxin transport along longitudinal axis is a ...
Phototropism and Negative phototropism Went Experiment (1926) of Phototropism auxin Some major classes of plant hormones: Auxin- phototropism Cytokinins- root growth ...
Auxin (IAA) Effects controls cell division & differentiation phototropism growth towards light asymmetrical distribution of auxin cells on darker side elongate faster ...
... of pathogen-free plants Basic procedure shoot tip or meristem-tip dissected and plated on a MS-based medium shoot tip must be less than 1 mm long low conc. of auxin ...
Plant Hormones (Ch 39) The Big 5 to Know (also on plant packet): -Auxin -Cytokinins -Gibberellins -Abscisic Acid -Ethylene Auxin Auxin= hormone that promotes elongation ...
Shoot Morphogenesis Shoot formation is usually induced following placement of tissues on media containing a high cytokinin to auxin ratio. Media that contain ...
Plant Tissue Culture What Is plant tissue culture? Definition Basis for Plant Tissue Culture Two Hormones Affect Plant Differentiation: Auxin: Stimulates Root ...
... cell expansion Zone of Cell Division - new cells by mitosis Root Cap - penetration, padding Mucilage Slough Cells Root Tip Senses Gravity Auxin Hormone Produced Auxin ...
AUXINAS Ácido indolacético es la auxina más ampliamente distribuída en plantas c 1998 Sinauer Associates,Inc. 2,4-D y NAA son auxinas sintéticas,

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