Biochemical changes associated with senescence, Biology

Biochemical Changes Associated with Senescence

When senescence begins many physiological and biochemical changes take place. For example, one of the important changes observed is in chlorophyll content. Its level starts declining. As a result, the capacity of CO2 fixation also declines and the overall structure of chloroplast in terms of organisation of thylakoids gets disturbed. For quite some time the rate of respiration remains constant but later it also drops and the supply of ATP is reduced. It is also shown that a number of degradative enzymes like proteases (hydrolyse proteins), ribonucleases (hydrolyse nucleic acids), β-glucan hydrolases (which loosens cell wall), chlorophyllase (which degrades chlorophyll) are produced which result in catabolism and finally over a period of time, the plant succumbs and dies.

Posted Date: 1/17/2013 8:01:55 AM | Location : United States

Related Discussions:- Biochemical changes associated with senescence, Assignment Help, Ask Question on Biochemical changes associated with senescence, Get Answer, Expert's Help, Biochemical changes associated with senescence Discussions

Write discussion on Biochemical changes associated with senescence
Your posts are moderated
Related Questions
Q. Is the ventricle lumen larger during diastole or during systole? During diastole the opposite occurs. The muscle fibers of the ventricles relax and the lumen of these chambe

Define types of Dryers? There are many other dryer types available, such as; Osmotic Drying Impingement Drying Microwave and Dielectric Drying Superheated

Steps of C dna amplification 1.  Smart-pcr amplification of cdna is the technique which initiates with the change of mrna to cdna utilizing mmlv-rt, mutated in the rnase h dom

Explain the Peptones - Complex Media? Peptones are protein hydrolysates obtained by partial digestion of meat, casein, soya meal, gelatin or other protein source. These provide

Atom has how many eletrons

Explain Feeding Schedule in Infancy? 1) Milk feed 5-6 times/day. Continue breast-feeding. Exclusive breast-feeding up to 6 months even during illness. Follow demand feeding.

Q. Explain Restrictive cardiomyopathy? It is a systemic or idiopathic disorder of the myocardium with clinical and hemodynamic features of diastolic dysfunction, closely simula

Q What are the three periods into which interphase are divided? Interphase is the preceding phase to the mitotic division. It is divided into three periods, G1, S and G2 the le

Q. Biological species concept? A biological species as defined by Ernst Mayr are "groups of actually or potentially interbreeding natural populations which are reproductively

Which type of tissue are the cartilaginous and the osseous tissue? The cartilaginous and the osseous tissues are considered connective tissues as they are tissues in which the