Leaf Development - Plant Ontology Wiki

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• Independently of it development and shape, the leaf ultimately undergoes SENESCENCE and ABSCISEè falling from the plant. • Deciduous species: every year • Evergreen species: individual leaves abscise after one or more years of growth and development, but all the leaves do NOT fall at the same time.
• The activity of the leaves and other determinate organs of the plants is regulated by changes within them and by interaction with other parts of the plant • <strong>Leaf</strong> senescence is usually characterized by a yellowing of the tissues and by various biochemical changes. • During the whole process different patterns of metabolism may occur. • Structurally, the most important changes occur at the time of abscission
Page 1 and 2: Leaf Development • Several merist
Page 3: M E R I S T E M S
Page 7 and 8: • 3- EXPANSION & SECONDARY MORPHO
Page 9 and 10: This is a vegetative shoot apical m
Page 11 and 12: REGIONS OF THE VEGETATIVE SHOOT MER
Page 13: EXAMPLE cz: central zone pz: periph
Page 16 and 17: 1- Apical meristem 2- Anticlinal di
Page 18 and 19: 1- The initially formed bulge furth
Page 20: What happens with grasses? • In s
Page 25: Xanthium (Compositae) 1- Leaf primo
Page 29 and 30: • Palisade tissue differentiates
Page 31 and 32: VENATION PATTERNS Dicot: initiated
Page 33: SENESCENCE AND ABSCISSION (PROMISE:
Page 37 and 38: ABSCISSION IS… Basically, it is a
Page 41 and 42: One example: Phaseolus 1- Abscissio
Page 43 and 44: • In plants there several hormone
Page 45: Abscission process…new version ba

Leaf Development - Plant Ontology Wiki

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