Cells and cell growth Cell walls and membranes Fertilization, embryogenesis vegetative development.

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Presentation transcript:

Cells and cell growth Cell walls and membranes Fertilization, embryogenesis vegetative development

The plant body: organization in organs and tissues

Fertilization, Embryogenesis & Vegetative Development Seed plants have similar growth and development patterns patterns are modulated by environment

Basic plant development stages - embryogenesis, and vegetative and reproductive growth/development

Hartmann et al. Plant Propagation 2002 Pollination and fertilization

Graham et al. 2006, Plant Biology Embryogenesis – zygote to seed

Plant Biology (2010) Smith et al Stages of embryogenesis

Auxin – a primary regulator embryogenesis Auxin movement and accumulation establishes polarity that regulates embryonic patterning

Apical-basal axis patterning during embryogenesis – genes involved in longitudinal development

Plant Biology (2010) Smith et al Radial patterning during embryogenesis

scr Radial patterning genetic determinants SCARECROW (SCR) and SHORTROOT (SHR) regulate endodermal and cortical development WOODEN LEG (WOL) regulates protophloem development

Plant Biology (2010) Smith et al Seed development/dormancy and germination – interplay of ABA and GA Smith et al. (2010) Plant Biology

Plant Biology (2010) Smith et al Smith et al. (2010) Plant Biology Shoot apical meristem (SAM) - progenitor of the repeated unit of the shoot Repeated unit is leaf, lateral meristem and internode

Plant Biology (2010) Smith et al Polar auxin transport and shoot elongation Smith et al. (2010) Plant Biology

Plant Biology (2010) Smith et al. Lateral bud suppression reduces branching in tomato and maize Genetic determinants and hormones regulate axillary bud development Smith et al. (2008) Plant Biology lateral suppressor teosinte branched 1

Leaf meristem has three developmental axes Apical-basal, lateral, and upper (adaxial) and lower (abaxial)

Plant Biology (2010) Smith et al Vertical and horizontal leaf growth Smith et al. (2010) Plant Biology

Auxin and root apical meristem cell identity and root development Genetic determinants

Root apical meristem and zonation Smith et al. Plant Biology (2010)

Lateral root branching – differentiation from the pericycle

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