Investigation of mRNA Expression of Early Light Inducible Protein (ELIP) under High Light Stress <em>Arabidopsis thaliana</em>.

<p>Plants absorb light for photosynthesis, but not all is used. Excess light energy may lead to photoinhibition of photosynthesis and irreversible photooxidative damage. Plants have evolved mechanisms for energy dissipation under high light stress. One such response may involve production of <em>ELIP</em>.</p> <p>It is of interest to know what signal(s) may be involved in <em>ELIP</em> expression. My hypothesis is that redox status of the chloroplast photosynthetic electron transport Chain (PETC) and/or chlororespiration may induce <em>ELIP</em> expression. Using the <em>Arabidopsis thaliana immutans (im)</em> chlororespiratory mutant, this hypothesis was tested. Etiolated seedlings of this variegated mutant were subjected to various light intensities over 0-24 hr period and <em>ELIP</em> mRNA levels were analyzed. These were compared with the wild type plants treated in the same manner.</p> <p>It was found that mature thylakoids may not be required for <em>ELIP</em> expression, and that both photoreceptor-dependent and independent components may be involved in <em>ELIP</em> expression.</p>

Name thesis:degree_name

MS (Master of Science)

Level thesis:degree_level

Thesis - restricted

Discipline thesis:degree_discipline

Biology

Year dc:date.issued

2001

Author dc:creator

• Oza, Preeti Bhavanishanker

• Photoinhibition
• Chlororespiration
• ELIP
• High-light Stress
• De-etiolation
• Redox
• Photoreceptors
• Arabidopsis
• Biology
• Life Sciences

Statement dc:rights

• Copyright by the authors.

Repository record dc:identifier

https://dc.etsu.edu/etd/42

OAI identifier oai:identifier

oai:dc.etsu.edu:etd-1092