Selenium ameliorates salinity stress in Petroselinum crispum by modulation of photosynthesis and by reducing shoot Na accumulation

Selenium ameliorates salinity stress in Petroselinum crispum by modulation of photosynthesis and... This study was performed to understand the mechanisms for Se-enhanced resistance of parsley (Petroselinum crispum L.) plants to salinity stress. Plant growth was negatively affected by salt stress; however, Se treatments at 1 mg/L significantly improved the growth rate and enhanced the salt tolerance of seedlings. This increased tolerance in Se-supplied plants was obtained by reduced damaging effect on maximal quantum yield of photosystem II (PSII) (F v/F m) coupled with higher levels of carotenoids and non-photochemical quenching (NPQ). The performance index (PIABS), as evidence for modulation of PSII function, was downregulated by salt stress; while Se mitigated this effect. Moreover, analysis of OJIP transients demon-strated that Se reduced salt damaging effect on PSII function through improvement of excitation energy trapping (TR0/CS) and electron transport (ET0/CS) per excited cross-section of leaf. The Na concentrations in shoots and roots of parsley seedlings considerably enhanced after NaCl treatment. Interestingly, treatment of salt-stressed plants with Se decreased the Na contents in shoots via the limitation of the root-to-shoot translocation of Na and exclusion of Na from cell sap, as well as the retention of K/Na and Ca/Na ratios. These data provide the first evidence that the Se application alleviates salinity stress by enhancing PSII function and by decreasing Na content in the shoot via binding of Na to the root cell wall. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Selenium ameliorates salinity stress in Petroselinum crispum by modulation of photosynthesis and by reducing shoot Na accumulation

Loading next page...
 
/lp/springer_journal/selenium-ameliorates-salinity-stress-in-petroselinum-crispum-by-I6v1vF8vOX
Publisher
Pleiades Publishing
Copyright
Copyright © 2017 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443717030086
Publisher site
See Article on Publisher Site

Abstract

This study was performed to understand the mechanisms for Se-enhanced resistance of parsley (Petroselinum crispum L.) plants to salinity stress. Plant growth was negatively affected by salt stress; however, Se treatments at 1 mg/L significantly improved the growth rate and enhanced the salt tolerance of seedlings. This increased tolerance in Se-supplied plants was obtained by reduced damaging effect on maximal quantum yield of photosystem II (PSII) (F v/F m) coupled with higher levels of carotenoids and non-photochemical quenching (NPQ). The performance index (PIABS), as evidence for modulation of PSII function, was downregulated by salt stress; while Se mitigated this effect. Moreover, analysis of OJIP transients demon-strated that Se reduced salt damaging effect on PSII function through improvement of excitation energy trapping (TR0/CS) and electron transport (ET0/CS) per excited cross-section of leaf. The Na concentrations in shoots and roots of parsley seedlings considerably enhanced after NaCl treatment. Interestingly, treatment of salt-stressed plants with Se decreased the Na contents in shoots via the limitation of the root-to-shoot translocation of Na and exclusion of Na from cell sap, as well as the retention of K/Na and Ca/Na ratios. These data provide the first evidence that the Se application alleviates salinity stress by enhancing PSII function and by decreasing Na content in the shoot via binding of Na to the root cell wall.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Apr 29, 2017

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