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Phyllotaxis: the status of the field
1Department of Mathematics and Computer Science, University of Québec, Rimouski, Canada.
Mathematical Biosciences
|June 1, 1995
Summary
Recent advances in pattern recognition and generation have significantly improved our understanding of phyllotaxis. This review summarizes progress, redefines challenges, and proposes a framework for studying this plant morphogenesis phenomenon.
Area of Science:
- Plant morphogenesis
- Evolutionary biology
- Comparative morphology
Background:
- Phyllotaxis is a central area in plant morphogenesis.
- Understanding phyllotaxis requires an interdisciplinary approach.
Purpose of the Study:
- Summarize recent contributions to phyllotaxis research.
- Redefine the challenges in studying phyllotaxis.
- Propose a framework for future research.
Main Methods:
- Literature review of pattern recognition and generation in phyllotaxis.
- Analysis of evolutionary and comparative morphology perspectives.
- Synthesis of existing knowledge and identification of research gaps.
Main Results:
- Significant progress in pattern recognition and generation of phyllotaxis.
- Phyllotaxis extends beyond botany, requiring evolutionary and morphological insights.
- A redefined challenge and a proposed framework for studying phyllotaxis.
Conclusions:
- The study of phyllotaxis has benefited from recent advances.
- An integrated framework is crucial for addressing the complexities of phyllotaxis.
- Future research should leverage evolutionary biology and comparative morphology.
Related Concept Videos
Morphogenesis
Plant morphogenesis—the development of a plant’s form and structure—involves several overlapping developmental processes, including growth and cell differentiation. Precursor cells differentiate into specific cell types, which are organized into the tissues and organ systems that make up the functional plant.
Light Acquisition
In order to produce glucose, plants need to capture sufficient light energy. Many modern plants have evolved leaves specialized for light acquisition. Leaves can be only millimeters in width or tens of meters wide, depending on the environment. Due to competition for sunlight, evolution has driven the evolution of increasingly larger leaves and taller plants, to avoid shading by their neighbors with contaminant elaboration of root architecture and mechanisms to transport water and nutrients.
Short-distance Transport of Resources
Short-distance transport refers to transport that occurs over a distance of just 2-3 cells, crossing the plasma membrane in the process. Small uncharged molecules, such as oxygen, carbon dioxide, and water, can diffuse across the plasma membrane on their own. In contrast, ions and larger molecules require the assistance of transport proteins due to their charge or size. Transport across membranes also occurs within individual cells, playing a variety of essential roles for the plant as a whole.
Phloem and Sugar Transport
Like many living organisms, plants have tissues that specialize in specific plant functions. For example, shoots are well adapted to rapid growth, while roots are structured to acquire resources efficiently. However, sugar production is primarily restricted to the photosynthetic cells that reside in the leaves of angiosperm plants. Sugar and other resources are transported from photosynthetic tissues to other specialized tissues by a process called translocation.
Pollination and Flower Structure
Flowers are the reproductive, seed-producing structures of angiosperms. Typically, flowers consist of sepals, petals, stamens, and carpels. Sepals and petals are the vegetative flower organs. Stamens and carpels are the reproductive organs.
Biological Clocks and Seasonal Responses
The circadian—or biological—clock is an intrinsic, timekeeping, molecular mechanism that allows plants to coordinate physiological activities over 24-hour cycles called circadian rhythms. Photoperiodism is a collective term for the biological responses of plants to variations in the relative lengths of dark and light periods. The period of light-exposure is called the photoperiod.

