Search results
Results from the WOW.Com Content Network
Plant defense against herbivory or host-plant resistance is a range of adaptations evolved by plants which improve their survival and reproduction by reducing the impact of herbivores. Many plants produce secondary metabolites, known as allelochemicals, that influence the behavior, growth, or survival of herbivores.
Tolerance is the ability of plants to mitigate the negative fitness effects caused by herbivory. It is one of the general plant defense strategies against herbivores, the other being resistance, which is the ability of plants to prevent damage (Strauss and Agrawal 1999). Plant defense strategies play important roles in the survival of plants as ...
Tritrophic interactions in plant defense. Ants attracted by the nutritional reward provided by extrafloral nectaries of a Drynaria quercifolia frond participate in a three-part interaction of plant, herbivorous insects, and themselves as predators. Tritrophic interactions in plant defense against herbivory describe the ecological impacts of ...
This plays an important role for generalist herbivores that eat a variety of plants. Keystone herbivores keep vegetation populations in check and allow for a greater diversity of both herbivores and plants. [63] When an invasive herbivore or plant enters the system, the balance is thrown off and the diversity can collapse to a monotaxon system ...
Plants have evolved many defense mechanisms against insect herbivory in the 350 million years in which they have co-evolved. Such defenses can be broadly classified into two categories: (1) permanent, constitutive defenses, and (2) temporary, inducible defenses. [1] These differ in that constitutive defenses are present before an herbivore ...
Rewilding. Rewilding is a form of ecological restoration aimed at increasing biodiversity and restoring natural processes. It differs from other forms of ecological restoration in that rewilding aspires to reduce human influence on ecosystems. [1] It is also distinct from other forms of restoration in that, while it places emphasis on ...
Herbivore adaptations to plant defense. Herbivores are dependent on plants for food, and have coevolved mechanisms to obtain this food despite the evolution of a diverse arsenal of plant defenses against herbivory. Herbivore adaptations to plant defense have been likened to "offensive traits" and consist of those traits that allow for increased ...
Endophyte. Transmission electron microscope image of a cross section through a soybean (Glycine max) root nodule. The nitrogen fixing bacteria, Bradyrhizobium japonicum, infects the roots and establishes a symbiosis. This high magnification image shows part of a cell with single bacteroid (bacterium-like cell or modified bacterial cell) within ...