Intercalary Meristem
Intercalary Meristem - Related Videos
03:14
Meristems and Plant Growth
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2026
Plants grow throughout their lives; this is called indeterminate growth, and it distinguishes plants from most animals. Although certain parts of plants stop growing (e.g., leaves and flowers), others grow continuously—like roots and stems. Indeterminate growth in plants is enabled by meristems, tissues containing undifferentiated cells—called meristematic cells. When meristematic cells divide, some daughter cells remain in the meristem, ensuring a steady supply of undifferentiated cells.
06:46
Confocal Live Imaging of Shoot Apical Meristems from Different Plant Species
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Cited by 16 •
2019
This protocol presents how to live image and analyze the shoot apical meristems from different plant species using laser scanning confocal microscopy.
07:52
Live Cell Imaging of Microtubule Cytoskeleton and Micromechanical Manipulation of the Arabidopsis Shoot Apical Meristem
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Cited by 2 •
2020
Here we describe a protocol for live cell imaging of the cortical microtubule cytoskeleton at the shoot apical meristem and monitoring its response to changes in physical forces.
10:26
AFM-based Mapping of the Elastic Properties of Cell Walls: at Tissue, Cellular, and Subcellular Resolutions
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Cited by 39 •
2014
We describe a method to map mechanical properties of plant tissues using an atomic force microscope (AFM). We focus on how to record mechanical changes that take place in cell walls during plant development at wide-field mesoscale, enabling these changes to be correlated with growth and morphogenesis.
08:31
Kinematic Analysis of Cell Division and Expansion: Quantifying the Cellular Basis of Growth and Sampling Developmental Zones in Zea mays Leaves
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Cited by 27 •
2016
Quantifying cell division and expansion is of crucial importance to the understanding of whole-plant growth. Here, we present a protocol to calculate cellular parameters determining maize leaf growth rates and highlight the use of these data for investigating molecular growth regulatory mechanisms by directing developmental stage-specific sampling strategies.
FAQs
Growth depends on a linked sequence rather than cell division alone. Cells in the meristem first undergo mitosis, increasing the number of available cells. Those new cells then elongate and differentiate, adding length to the stem or leaf. This coordination allows extension to continue even when nearby tissues have already matured.
Its position between mature tissues allows growth activity to remain near the base of an expanding leaf or internode. Because the active region is not confined to the tip, newly produced cells can contribute to extension from a basal position. This arrangement helps explain how grasses continue lengthening after surrounding tissues have developed.
Physical damage can remove or injure portions of leaves and stems, but the basal meristematic region may remain available to produce new cells. Mitosis supplies replacement cells, while subsequent elongation and differentiation help restore tissue extension. This mechanism gives grasses and other plants with these regions a biological basis for rapid regrowth after repeated disturbance.
Intercalary meristems occur commonly in grasses and other monocots, where they contribute to extension of leaves and internodes. Their activity is especially important for understanding growth in plants whose tissues may mature while additional length is still needed. The pattern connects cellular division and tissue development with the growth form of these plants.
Study of these regions helps connect three developmental events: mitotic cell production, cell elongation, and differentiation. Examining their relationship clarifies how a plant coordinates new cell formation with the conversion of those cells into expanding, specialized tissue. This provides biological context for understanding how stems and leaves continue development after surrounding regions have matured.
Their capacity to support renewed extension after physical damage links cellular development with visible recovery at the plant and ecosystem levels. In grasslands, this helps explain resilience after grazing or mowing. In crops, the same developmental principle is relevant to regrowth, making intercalary meristems important for connecting plant anatomy with agricultural growth outcomes.