Opbevaringsvæv

Opbevaringsvæv, also known as storage tissue, is a plant tissue type that serves the primary function of storing reserve materials such as starch, lipids, and proteins. This tissue is vital for the plant's survival, especially during periods of dormancy, unfavorable environmental conditions, or when rapid growth is required. It can be found in various plant parts, including roots, stems, seeds, and fruits.

The cells within storage tissue are typically parenchyma cells, which are characterized by thin cell walls and large central vacuoles. These vacuoles are often filled with stored nutrients. Depending on the stored substance, the cytoplasm may also contain plastids, such as amyloplasts for starch storage or elaioplasts for lipid storage.

Common examples of plant organs rich in storage tissue include potato tubers (modified stems), carrot roots, and the cotyledons of seeds like beans and peas. These organs are often enlarged and fleshy due to the accumulation of stored reserves. The stored materials provide energy and building blocks for the plant when photosynthesis is limited, such as during winter or early seedling development before true leaves are fully functional. The presence and type of storage tissue are crucial for the plant's ability to reproduce, survive stress, and adapt to its environment.