Auxinas e tropismos História - Darwin (1890) estudou fototropismo, movimento em direção a luz Darwin e colegas estudaram coleóptilos –tecidos que protegem as folhas…

Slide 1 PLANT RESPONSES TO INTERNAL AND EXTERNAL SIGNALS CHAPTER 39 Slide 2 Plants respond to a wide array of stimuli throughout its lifecycle Hormonal signals Gravity Direction…

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Slide 1 A small acidic protein 1 (SMAP1) mediates responses of the Arabidopsis root to the synthetic auxin 2,4-dichlorophenoxyacetic acid Wang Yuqian Slide 2  Introduction…

Slide 1 Physiology of Seed Plants Slide 2 Regulating Growth and Development: The Plant Hormones Auxins Cytokinins Ethylene Abscisic Acid Gibberellins Slide 3 Hormones Chemical…

Plant Hormones What kinds of things do plants have to respond to? Light - phototropism Touch - thigmotropism Gravity â gravitropism Turgor movements Biological clock - circadian…

Arabidopsis PLETHORA Transcription Factors Control Phyllotaxis  Kalika Prasad, Stephen P. Grigg, Michalis Barkoulas, Ram Kishor Yadav, Gabino F. Sanchez-Perez, Violaine…

Phyllotaxis: biological mechanisms Seth Donoughe Phyllotaxis A few simple assumptions about leaf growth --> Mathematical models --> Patterns observed in plants âFirst…