Photosynthetic performance of maize hybrids to drought stress

Photosynthetic performance of maize hybrids to drought stress Maintaining photosynthetic activities is a critical function that allows crops to adapt to drought stress. We evaluated drought-induced changes in photosynthetic performance via gas exchange as well as photosynthetic electron transport and carbon assimilation process in two maize (Zea mays L.) cvs. Shaandan 609 (SD609) and Zhengdan 958 (ZD958). Plants were subjected to different intensity of drought stress inside of rain shelter. In both cultivars, moderate and severe drought stress caused a decrease in photosynthetic rate and stomatal conductance, but an increase in the intercellular CO2 concentration. Moreover, chlorophyll a fluorescence transients showed that drought stress significantly increased the positive Land K-band, revealing decreased function of oxygen-evolving complex, and decreased the fluorescence parameters reflecting electron flow from the intersystem carriers to the final reduction of PSI end electron acceptors. Also, moderate and severe drought stresses reduced both total activity and Rubisco activity. These parameters were more affected in ZD958 by drought stress compared to SD609. Based on our results, damaged PSII, reduced electron transport, and inactivation of Rubisco were main non-stomatal limitation of photosynthesis inhibition in both cultivars under moderate and severe drought stress. Photosynthetic apparatus of SD609 was more resistant to drought stress than that of ZD958. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Photosynthetic performance of maize hybrids to drought stress

Loading next page...
 
/lp/springer_journal/photosynthetic-performance-of-maize-hybrids-to-drought-stress-FELGNun0Gr
Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443715060187
Publisher site
See Article on Publisher Site

Abstract

Maintaining photosynthetic activities is a critical function that allows crops to adapt to drought stress. We evaluated drought-induced changes in photosynthetic performance via gas exchange as well as photosynthetic electron transport and carbon assimilation process in two maize (Zea mays L.) cvs. Shaandan 609 (SD609) and Zhengdan 958 (ZD958). Plants were subjected to different intensity of drought stress inside of rain shelter. In both cultivars, moderate and severe drought stress caused a decrease in photosynthetic rate and stomatal conductance, but an increase in the intercellular CO2 concentration. Moreover, chlorophyll a fluorescence transients showed that drought stress significantly increased the positive Land K-band, revealing decreased function of oxygen-evolving complex, and decreased the fluorescence parameters reflecting electron flow from the intersystem carriers to the final reduction of PSI end electron acceptors. Also, moderate and severe drought stresses reduced both total activity and Rubisco activity. These parameters were more affected in ZD958 by drought stress compared to SD609. Based on our results, damaged PSII, reduced electron transport, and inactivation of Rubisco were main non-stomatal limitation of photosynthesis inhibition in both cultivars under moderate and severe drought stress. Photosynthetic apparatus of SD609 was more resistant to drought stress than that of ZD958.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Oct 18, 2015

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 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

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