1. Taiz and Zeiger – Chapter 16, Smith et al. – Chapter 5
Fertilization, Embryogenesis & Vegetative Development
HORT 301 – Plant Physiology
August 30, 2010
Taiz and Zeiger – Chapter 16, Smith et al. – Chapter 5
Seed plants have similar growth and development patterns
These patterns are modulated by the environment

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

3. Pollination and fertilization
Hartmann et al. Plant Propagation 2002

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

5. Stages of embryogenesis
Plant Biology (2010) Smith et al

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

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

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

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

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

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

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

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

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

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

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

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

18. Lateral root branching – differentiation from the pericycle

19. Senescence and programmed cell death are an aging process
Soybean plants are similar age but flowers were removed from the plant on the right