Light regulation of succinate dehydrogenase subunit B gene SDH2-3 expression in maize leaves

Light regulation of succinate dehydrogenase subunit B gene SDH2-3 expression in maize leaves It has been established that, under light, acute decrease in succinate dehydrogenase (SDH) activity in maize (Zea mays L.) leaves occurs, which is likely due to lowering the role of tricarboxylic acid cycle (TCA) as energy supplier under actively functioning photosynthesis. The mechanism underlying the light regulation of SDH subunit B genes transcription level was clarified. It was shown that, in green maize leaves, mRNA of only gene sdh2-3 encoding large subunit of this enzyme was detected. The apparent absence of transcripts of genes sdh2-1 and sdh2-2 encoding other isoforms of the large subunit of the enzyme is explained by their differential expression on other stages of plant ontogenesis due to metabolism restructuring for triggering photosynthesis operation. It was found that the active form of phytochrome A participates in the regulation of gene sdh2-3 expression, leading to the decrease in the amount of mRNA of the given gene in leaves. Application of specific inhibitor of cell membranes calcium channels (ruthenium red) and EGTA allowed us to reveal that the change in calcium concentration in the nucleus is due to its redistribution between cell compartments, in particular between the nucleus and cytoplasm. In addition, it was found that expression of gene pif3 encoding transcription factor PIF3 is changed in a light-dependent manner, in dependency on the state of the phytochrome system, and this correlates with gene sdh2-3 functioning. These findings may indicate the phytochrome-mediated mechanism of the regulation of this gene with participation in the process of transcription factor PIF3. Russian Journal of Plant Physiology Springer Journals

Light regulation of succinate dehydrogenase subunit B gene SDH2-3 expression in maize leaves

Loading next page...
Pleiades Publishing
Copyright © 2016 by Pleiades Publishing, Ltd.
Life Sciences; Plant Physiology; Plant Sciences
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial