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Published byGregory Sutton Modified over 9 years ago
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Background Introduction By Bensen Fan Kristin Gill Maria Garcia
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Part I. Seed Development By Bensen Fan
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Seed Anatomy Cotyledon Axis
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Flower Anatomy Pistil Anthers (Makes Pollens) Ovary (Contains ovules) Stigma
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Pollination & Fertilization: Forming of a New Life! Sperms Pollen Tube
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Embryo Development: Zygote - Young Embryo Asymmetric Division Apical Cell Basal Cell Embryo Proper Suspensor Terminally Differentiated
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Late Development: Torpedo - Mature Embryo SM = Shoot Meristem; RM = Root Meristem
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Final Stage: Dormancy Mature Seeds Dormant Seeds
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Germination: Beginning of a New Cycle…
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Part II. Arabidopsis thaliana Embryo Development By Kristin Grill
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What is the life cycle of an Arabidopsis plant?
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What happens during embryo development? Each stage is essential for embryo development! EMBRYO SACGLOBULARHEARTTORPED O MATURATION
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Embryos develop after double fertilization Early embryos consist of 2 regions: 1. Embryo Proper 2. Suspensor Globular Embryo Embryo Proper Suspensor
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Early embryo development is a very coordinated developmental process Embryo Sac Egg Cell Central Cell Synergids 2-Cell Embryo Apical cell Basal cell Globular Embryo Embryo Proper Suspensor
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The parts of a globular embryo undergo different fates Globular Embryo Embryo Proper Suspensor Mature Embryo Differentiated Organ Mature Arabidopsis Plant
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Late embryo development… consists of cotyledon and axis development! 2 cotyledons Heart Stage Torpedo Stage
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Mature Embryo Consists of: 1.Cotyledons 2.Axis - contains the shoot and root meristems
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Part III: Why is Arabidopsis Thaliana a model plant? By Maria Garcia
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Here’s Why Arabidopsis Thaliana is convenient. It has a: Fast generation time Small genome Large mutant collections Large scientific community working on all aspects of plant biology
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How fast does it grow? Short non-seasonal generation time Grows all year 4 to 8 weeks from a seed to a mature plant
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How small is it? Arabidopsis has a small genome 120Mb (25,000 genes- same as humans!) Arabidopsis genome was sequenced in the year 2000
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Easy to Manipulate Large mutant collections Chemical Insertional Knock-Out! Easily manipulated Genetically tractable
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Everyone is in on it Large scientific community working on all aspects of plant biology Many resources on this plant already Much is already known about this plant
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