Related Experiment Video
Updated: Jan 29, 2026
10:26
Author Spotlight: A 3D Digital Model for the Diagnosis and Treatment of Pulmonary Nodules
Published on: May 19, 2023
2.5K
An alternative propagation method ofAnanas through nodule culture
1Hong Kong Institute of Biotechnology, 2 Biotechnology Avenue, 12 Miles, Tai Po Road, Shatin, N.T., Hong Kong.
Plant Cell Reports
|February 8, 2019
Summary
This study presents an effective micropropagation method for pineapple (Ananas comosus Merr.) using nodule culture. This technique offers a superior regeneration capacity compared to other methods, enabling efficient plantlet production.
Area of Science:
- Plant biotechnology
- Horticultural science
- Plant tissue culture
Background:
- Micropropagation is crucial for rapidAnanas comosus Merr. (pineapple) propagation.
- Traditional methods may face limitations in efficiency and scalability.
- Nodule culture offers a potential alternative for enhanced plant regeneration.
Purpose of the Study:
- To develop and optimize a micropropagation protocol forAnanas comosus Merr. utilizing nodule culture.
- To compare the regeneration efficiency of nodule culture with direct regeneration and callus methods.
- To establish a reliable and routine system for producing rooted pineapple plantlets.
Main Methods:
- Nodule induction from leaf-base or shoot-base explants on a modified half-strength MS medium.
- Nodule proliferation achieved by chopping nodules (1-3 mm) and culturing on the same medium.
- Shoot regeneration and rooting optimized using varying concentrations of NAA and BA.
- Subculturing for plantlet development and rooting.
Main Results:
- Nodule culture demonstrated higher regeneration capacity than direct regeneration or callus.
- Maximum shoot regeneration was observed with 0.54 μM NAA and 0.44 μM BA.
- Shoots regenerated within two weeks under optimal conditions.
- Best rooting occurred in the same medium (0.54 μM NAA and 0.44 μM BA).
- Rooted plantlets were routinely produced every 6 weeks.
Conclusions:
- Nodule culture is a highly efficient method forAnanas comosus Merr. micropropagation.
- The developed protocol provides a robust system for rapid and large-scale pineapple propagation.
- This method surpasses traditional techniques in regeneration efficiency and speed.
Related Concept Videos
01:24Area Computation by the Alternative Coordinate Method
621
The alternative coordinate method, also known as the Shoelace Formula, is a technique for determining the area of a traverse using Cartesian coordinates. This method relies on the sequential arrangement of x and y coordinates for each point of the shape, ensuring accuracy and ease of application.In this approach, each corner's x and y coordinates are listed as fractions, with the x-coordinate as the numerator and the y-coordinate as the denominator. These coordinates are arranged sequentially...
621
01:17In Vitro Drug Dissolution: Alternative Methods
228
Alternative drug dissolution methods include the rotating bottle, intrinsic dissolution test, peristalsis, and the Franz diffusion cell method. The rotating bottle method involves meticulously rotating tightly capped controlled-release beads in a temperature-controlled bath. Periodic decanting of samples allows for residue assay, followed by refilling with fresh medium and testing at various pH levels to emulate the gastrointestinal tract conditions.In contrast, the intrinsic dissolution test...
228
02:18Alternative RNA Splicing
25.1K
Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
25.1K
02:18Alternative RNA Splicing
5.1K
5.1K
01:07Propagation of Waves
3.0K
When a wave propagates from one medium to another, part of it may get reflected in the first medium, and part of it may get transmitted to the second medium. In such a case, the interface of the two mediums can be considered as a boundary that is neither fixed nor free.
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
Consider a scenario where a wave propagates from a string of low linear mass density to a string of high linear mass density. In such a case, the reflected wave is out of phase with respect to the incident wave, however the...
3.0K
01:23Propagation of Action Potentials
9.3K
The propagation of an action potential refers to the process by which a nerve impulse, or "action potential," travels along a neuron.
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
Neurons (nerve cells) have a resting membrane potential, with a slightly negative charge inside compared to outside. This is maintained by ion channels, such as sodium (Na+) and potassium (K+) channels, which control the flow of ions. When a stimulus, like a touch or a signal from another neuron, triggers the neuron, sodium channels open, allowing sodium ions to...
9.3K