Protection of plants against toxic substances, Biology

Protection of Plants against Toxic Substances

Plants produce several toxic substances themselves and may also encounter the ones produced by other plants or present in the environment. Toxic effects of these substances is prevented by confining them in some part of the plant's organs (e.g., seeds, roots and leaves), tissues (e.g., epidermal layer and the spongy mesophyll), organelles (e.g., vacuoles and chloroplasts) or extra cytoplasmic space (cell wall etc.). The enzymes involved in degradation of these substances are also concentrated in these parts. Usually autogenous (self-produced) toxins are stored as their non-toxic derivative.

The enzymes that modify self-toxins can also detoxify toxins of foreign origin. Plants have evolved a huge arsenal of enzymes catalysing chemical modification of such toxic compounds. In some cases, a small number of enzymes with each one targeted towards a broad group of chemicals is produced. Both these kinds of enzymes have been found in plants.

Posted Date: 1/18/2013 12:51:45 AM | Location : United States







Related Discussions:- Protection of plants against toxic substances, Assignment Help, Ask Question on Protection of plants against toxic substances, Get Answer, Expert's Help, Protection of plants against toxic substances Discussions

Write discussion on Protection of plants against toxic substances
Your posts are moderated
Related Questions
DISORDE R RELATED TO NUTRITION AND DIGESTIVE SYSTEM Malnutrition Malnutrition is improper intake of food. Malnutrion covers both undernutrition and overnutrition. Und

Q. Where are the adrenal glands located? How many are they and what are their portions? Each adrenal gland is located on the top of each kidney (forming a hat-like structure fo

Brucellosis Brucellosis among cattle, buffaloes, sheep, goats, pigs produces heavy economic losses due to abortions in late pregnancy, infertility and reduction in productivit

MULTIPLE ALLELES (i)         More than two alternative forms (alleles) of a gene in a population occupying the same locus on a chromosome or its homologue are known as multiple

Describe in detail about the Huntington's disease The brain of a person who has died as a result of Huntington's disease or Alzheimer's disease will look abnormal even to the

What is the name of the terminal portion of the axon? The terminal portion of the axon is known presynaptic membrane. Through this membrane neurotransmitters are released into

Absorption of amino acids and  peptides Generally,  the  dietary proteins are almost comp!etely  digested to their constituent amino acids and these are rapidly absorbed  from

A new drug named AGON-CaSR has been developed that is an agonist at calcium-binding sites of CaSRs (Calcium-Sensing Receptors) in plasma membranes of parathyroid gland cells.

Diagnostic Wax Up A diagnostic wax up should be done by you or got done from a laboratory for each and every case regardless of the extent or difficulty level of the case as it

WHAT IS THERE BETWEEN THE TRACHEA OF COCKROACH AND RABBIT