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Plant Tissues

Plant Tissues

Plants are multicellular eukaryotes with tissue systems made of various cell types that carry out specific functions. Different tissues work together to perform a unique function and form an organ. Organs working together form organ systems. Vascular plants have two distinct organ systems: a shoot system and a root system. The shoot system consists of two portions: the vegetative (non-reproductive) parts of the plant, such as the leaves and the stems, and the reproductive parts of the plant,...

Plant Cells and Tissues

Plant Cells and Tissues

Plant tissues are collections of similar cells performing related functions. Different plant tissues will have their own specialized roles and can be combined with other tissues to form organs such as flowers, fruit, stem, and leaves. Two major types of plant tissue include meristematic and permanent tissue.Meristematic tissue, the primary growth tissue in plants, is capable of self-renewal and indefinite cell division. Every cell in the plant originates from a meristem. Meristematic tissue is...

Tonicity in Plants

Tonicity in Plants

Plant cells maintain appropriate osmotic balance in extreme conditions. For instance, plants in dry environments store water in vacuoles, limit the opening of their stoma, and have thick, waxy cuticles to prevent unnecessary water loss. Some species of plants that live in salty environments store salt in their roots. As a result, water osmosis occurs in the root from the surrounding soil.
Tonicity
Tonicity describes the capacity of a cell to lose or gain water depending on the solute...

Tonicity in Plants

Tonicity in Plants

Tonicity describes the capacity of a cell to lose or gain water. It depends on the quantity of solute that does not penetrate the membrane. Tonicity delimits the magnitude and direction of osmosis and results in three possible scenarios that alter the volume of a cell: hypertonicity, hypotonicity, and isotonicity. Due to differences in structure and physiology, tonicity of plant cells is different from that of animal cells in some scenarios.Plants and Hypotonic EnvironmentsUnlike animal cells,...

Short-distance Transport of Resources

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.

Key Elements for Plant Nutrition

Key Elements for Plant Nutrition

Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the atmosphere, the...

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A Telemetric, Gravimetric Platform for Real-Time Physiological Phenotyping of Plant–Environment Interactions

A Telemetric, Gravimetric Platform for Real-Time Physiological Phenotyping of Plant–Environment Interactions

Published on: August 5, 2020

Integrated physiological units in plants.

¹Maxine Watson is at the Department of Biology, Indiana University, Bloomington, Indiana 47405, USA.

Trends in Ecology & Evolution

|January 14, 2011

Summary

This summary is machine-generated.

Many plants function as integrated physiological units (IPUs), not fully unified organisms. This finding impacts understanding plant resource sharing and interactions with other species.

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Area of Science:

Plant biology
Ecology
Evolutionary biology

Background:

Traditionally, plants were viewed as fully integrated organisms sharing resources internally.
Emerging research suggests plants may be better understood as assemblages of semiautonomous integrated physiological units (IPUs).

Purpose of the Study:

To re-evaluate the traditional view of plant integration.
To explore the implications of IPUs for ecological and evolutionary studies.

Main Methods:

Literature review of recent studies on plant physiological and morphological subunits.
Conceptual synthesis of existing data to support the IPU model.

Main Results:

Evidence suggests many plants comprise multiple semiautonomous integrated physiological units (IPUs).
These IPUs possess distinct physiological and morphological subunits.
The IPU concept challenges the notion of complete internal resource sharing in plants.

Conclusions:

The integrated physiological unit (IPU) model offers a more realistic framework for plant biology.
Understanding IPUs is crucial for studying plant-animal interactions (herbivory, pollination, frugivory).
This model is essential for research on resource distribution and environmental regulation of plant development.