Search results
Results from the WOW.Com Content Network
Systemically induced defences are at least in some cases the result of changes in the transcription rates of genes in a plant. Genes involved in this process may differ between species, [25] but common to all plants is that systemically induced defences occur as a result of changes in gene expression. The changes in transcription can involve ...
Jasmonic acid (JA) is a plant hormone that increases in concentration in response to insect herbivore damage. The rise in JA induces the production of proteins functioning in plant defenses. JA also induces the transcription of multiple genes coding for key enzymes of the major pathways for secondary metabolites.
Hypersensitive response (HR) is a mechanism used by plants to prevent the spread of infection by microbial pathogens.HR is characterized by the rapid death of cells in the local region surrounding an infection and it serves to restrict the growth and spread of pathogens to other parts of the plant.
Induced systemic resistance (ISR) is a resistance mechanism in plants that is activated by infection. Its mode of action does not depend on direct killing or inhibition of the invading pathogen , but rather on increasing physical or chemical barrier of the host plant. [ 1 ]
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.
Where to shop today's best deals: Kate Spade, Amazon, Walmart and more
Image credits: moxie_walter Humanity domesticated cats much later than dogs - in fact, about two and a half times later. So it's not surprising that cats continue to demonstrate specific features ...
Locally induced defenses aid parasitoids in targeting their foraging behaviors to the exact location of the herbivore on the plant. Systemic defenses are less spatially specific and may serve to confuse the enemy once the source plant is located. A plant might employ both local and systemic responses simultaneously. [1]