The interrelationship between HCO 3 − , NO 3 − , and Cl− as effective anions in the photosynthetic electron transport

The interrelationship between HCO 3 − , NO 3 − , and Cl− as effective anions in the... Thylakoids were isolated from the leaves of three different plants (Pisum sativium L., Lactuca sativa L., and Raphanus sativus L.). The addition of HCO 3 − to a suspension of salt-and HCO 3 − -epleted thylakoids (suspended in salt-free medium) raised the rate of O2 evolution up to fourfold. This stimulation could be partially replaced by the addition of chloride or nitrate ions. However, the addition of HCO 3 − in the presence of Cl− or NO 3 − resulted in a higher stimulation of O2 evolution (sixfold in the presence of nitrate and sevenfold in the presence of chloride). On the other hand, the addition of HCO 3 − to the thylakoids depleted from salt only raised the rate of O2 evolution by 10–15%, whereas 40–70% was obtained by the addition of nitrate or chloride ions. The fluorescence induction studies indicated a significant decrease in the yield of the variable fluorescence of the salt- and HCO 3 − -depleted thylakoids. A partial increase in the fluorescence yield was obtained by the addition of HCO 3 − alone. A typical fluorescence induction curves were obtained by the addition of HCO 3 − in the presence of Cl− or NO 3 − ions. The data obtained suggest a similar role for chloride and nitrate ions in O2 evolution in the Hill-reaction, which is restricted at the donor side of photosystem II, whereas bicarbonate plays its role at both sides (acceptor and donor sides). The presented data are those obtained for the thylakoids of P. sativium, which were more or less similar to those obtained for L. sativa and R. sativus. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

The interrelationship between HCO 3 − , NO 3 − , and Cl− as effective anions in the photosynthetic electron transport

Loading next page...
 
/lp/springer_journal/the-interrelationship-between-hco-3-no-3-and-cl-as-effective-anions-in-MnYsN0j09X
Publisher
Springer US
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443714010099
Publisher site
See Article on Publisher Site

Abstract

Thylakoids were isolated from the leaves of three different plants (Pisum sativium L., Lactuca sativa L., and Raphanus sativus L.). The addition of HCO 3 − to a suspension of salt-and HCO 3 − -epleted thylakoids (suspended in salt-free medium) raised the rate of O2 evolution up to fourfold. This stimulation could be partially replaced by the addition of chloride or nitrate ions. However, the addition of HCO 3 − in the presence of Cl− or NO 3 − resulted in a higher stimulation of O2 evolution (sixfold in the presence of nitrate and sevenfold in the presence of chloride). On the other hand, the addition of HCO 3 − to the thylakoids depleted from salt only raised the rate of O2 evolution by 10–15%, whereas 40–70% was obtained by the addition of nitrate or chloride ions. The fluorescence induction studies indicated a significant decrease in the yield of the variable fluorescence of the salt- and HCO 3 − -depleted thylakoids. A partial increase in the fluorescence yield was obtained by the addition of HCO 3 − alone. A typical fluorescence induction curves were obtained by the addition of HCO 3 − in the presence of Cl− or NO 3 − ions. The data obtained suggest a similar role for chloride and nitrate ions in O2 evolution in the Hill-reaction, which is restricted at the donor side of photosystem II, whereas bicarbonate plays its role at both sides (acceptor and donor sides). The presented data are those obtained for the thylakoids of P. sativium, which were more or less similar to those obtained for L. sativa and R. sativus.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Dec 28, 2013

References

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

DeepDyve Freelancer

DeepDyve Pro

Price
FREE
$49/month

$360/year
Save searches from
Google Scholar,
PubMed
Create lists to
organize your research
Export lists, citations
Read DeepDyve articles
Abstract access only
Unlimited access to over
18 million full-text articles
Print
20 pages/month
PDF Discount
20% off