Where Is Starch Stored in Plant Cells?

Plants store starch in tubers, such as sweet potatoes.
••• Hemera Technologies/PhotoObjects.net/Getty Images

Some plants, such as potatoes and other tubers, and fruits like the banana and breadfruit, store starch for later use. This starch is stored by special organelles, or cell subunits, called amyloplasts.

Storage Process

Plant starch begins as glucose, a primary product of photosynthesis, or the process by which plants produce food from sunlight. Glucose is difficult for plants to store, however, and is converted either to sucrose or starch through a process called polymerization.

Amyloplasts

The polymerization and storage process in plants is performed by special cell parts—the amyloplasts. These non-pigmented organelles take glucose, turn it into starch and move it to another part of the cell, called the stroma.

Stroma

The stroma is the colorless, spongy cell matrix that supports the plant cell itself. In tubers, rhizomes and other starch-storing plant organs, it also acts as a place to store food for later use. When the plant needs the energy in the starch, it converts the starch grains back into glucose.

Related Articles

Materials Needed for Photosynthesis
How to Make a Plant Cell Model Using a Shoebox
How Do Plants Store Excess Sugar?
How to Make a Model of a Plant Cell in a Plastic Bag
Organelles Involved in Photosynthesis
What Part of Plant Can Store Extra Food As Sugar or...
What is Glucose Made Of?
Cellular Respiration in Plants
How to Make Cytoplasm for a Cell Project
How Is Glucose Stored in Plant Cells?
How Are Photosynthesis & Cellular Respiration Related?
Where Does Respiration Occur?
How Do Plant Cells Obtain Energy?
What Are the Functions of Starch in Plant Cells?
How to Make a JELL-O Model of an Animal Cell
What is Ethanolic Potassium Hydroxide?
10 Facts on Photosynthesis
What Happens When There Is No Oxygen Available at the...
How to Reset a TI89
What Happens to Carbon Dioxide During Photosynthesis?

Dont Go!

We Have More Great Sciencing Articles!