Leaf Growth and Allometry - Lecture 1

Explore the fascinating world of leaf growth and allometry in this comprehensive lecture by Utpal Nath from the International Centre for Theoretical Sciences. Delve into the stages of leaf development, examining how leaves grow and the concept of fatemap. Discover the polar nature of leaf growth and the gradients in cell size and B-Cyclin expression. Investigate allometric growth in various contexts, from human development to different plant species. Learn about the molecular mechanisms behind leaf morphogenesis, focusing on GRF genes and miR396 expression. Gain insights into the phylogeny of allometry and its diverse manifestations in nature. Engage with thought-provoking questions about the role of miR396 in growth regulation and polarity. This 57-minute lecture, part of a program aimed at Master's and PhD-level students, bridges biology and physics, offering a deep dive into the physical constraints and evolutionary aspects of living systems.

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Leaf Growth and Allometry - Lecture 1
Canon of proportions
Stages of leaf growth
How does a leaf grow?
Spot a young leaf...
... and follow the spots
Fatemap of a leaf
Cell size has a gradient too
B-Cyclin expression gradient in Arabidopsis leaf
Leaf growth is polar
Allometry in human growth
Allometric growth
Total 75
Phylogeny of allometry
+ve allometry in Nicotiana
Isometry in Hibiscus
-ye allometry in croon
+ve allometry -ye allometry isometry
Molecules in leaf morphogenesis
GRF genes
miR396 expression has diversity
Is miR396 a cause or effect?
Growth polarity is possibly regulated by miR396
Q&A