Plant Cells

The entire genomic DNA cannot express at a time. In this process only particular type of gene is expressed at a time, specifically leading to the production of a particular gene product which is in turn specific for a plant organ or tissue. These specific genes are responsible for the special characteristics like smell, taste, color, texture, etc., of the different pant organs. Furthermore plant cells have the capacity to generate into a complete plant, this property of plant cells is called Totipotency. Two terms define the growth of plants, i.e. Proliferation & Differentiation. Proliferation means the division of the cells, without any alteration to the cells genome, where as differentiation refers to the conversion of a plant cell to a particular type according to the organ of plant. For example the same plant cell can differentiate into a leaf cell which is green in color or a flower cell which has certain color, odor & texture or a fruit cell which has a definite characteristic which is different from other plant organs. This property of cells to form into different organs, which is happening at the gene level, may be defined as differentiation.
Two Scientists namely, Theodor Schwann and M.I.Schlieden in 1838, studied reproduction in plants and found Totipotency in plant cells. Apart from Totipotency, several terms are used to explain the properties of plant cells, i.e. the plant cells capacity to regenerate into organs or complete plants may be defined as regeneration, plasticity of the plant cells defines the morphological & metabolic changes happening in plant cells due to environmental conditions, and the cells which carry artificially introduced genes into them are called as transformed cells.

Suggested Posts

Systematics Diversity in living organisms There is a great diversity among living organisms found on the planet earth. They differ in their structure, habit, ha...
Light Harvesting Complexes Sun is the source of an incessant flow of energy which forms a range of electromagnetic spectrum, of a portion of which is perceived by us as a light....
AIIMS PMT AIPMT JIPMER Plant Growth and Developmen... 1. In dicot roots cork cambium originates in (a) pith (b) hypodermis (c) pericycle (d) endodermis. 2. Differential division of RAM gives rise to (...
Algae In Algae the plant body shows no differentiation into root, stem or leaf or true tissues. Such a plant body is called thallus. They do not have vascul...
Water Transport in Plants The water absorbed by the root hairs is translocated upwards through the xylem. The mystery of the upward movement of water is yet to be solved in a s...

Fyrose is one of the Authors of HourlyBook.

Related Posts
Comment ( 1 )
  1. Water Transport in Plants | Hourly Book
    March 30, 2012 at 11:05 pm

    […] movement of water is yet to be solved in a satisfactory way. The upward transport of water in plants which are 400 feet high has not been satisfactorily explained till date. Though the mechanism for […]

Leave a reply
Captcha Click on image to update the captcha .