Physiological responses of halophytic C4 grass Aeluropus littoralis to salinity and arbuscular mycorrhizal fungi colonization

Verfasser / Beitragende:
[R. Hajiboland, F. Dashtebani, N. Aliasgharzad]
Ort, Verlag, Jahr:
2015
Enthalten in:
Photosynthetica, 53/4(2015-12-01), 572-584
Format:
Artikel (online)
ID: 605481008
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024 7 0 |a 10.1007/s11099-015-0131-4  |2 doi 
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245 0 0 |a Physiological responses of halophytic C4 grass Aeluropus littoralis to salinity and arbuscular mycorrhizal fungi colonization  |h [Elektronische Daten]  |c [R. Hajiboland, F. Dashtebani, N. Aliasgharzad] 
520 3 |a The halophytic C4 grass, Aeluropus littoralis, was cultivated under low (50 mM) and high (200 mM) NaCl salinity and inoculated with the arbuscular mycorrhizal fungi (AMF) Claroideoglomus etunicatum in a sand culture medium for 20 weeks. Shoot and root dry mass increased under salinity conditions up to 24 and 86%, respectively. Although the root colonization rate significantly decreased in the presence of salt, AMF-colonized (+AMF) plants had higher biomass compared with plants without AMF colonization (-AMF) only under saline conditions. Net CO2 assimilation rate increased significantly by both salinity levels despite stable stomatal opening. In contrast, AMF-mediated elevation of the net CO2 assimilation rate was associated with a higher stomatal conductance. Unexpectedly, leaf activity of phosphoenolpyruvate carboxylase decreased by salinity and AMF colonization. Transpiration rate was not affected by treatments resulting in higher water-use efficiency under salinity and AMF conditions. Concentrations of soluble sugars and free α-amino acids increased by both salinity and AMF treatments in the shoot but not in the roots. Proline concentration in the leaves was higher in the salt-treated plants, but AMF colonization did not affect it significantly. Leaf activity of nitrate reductase increased by both salinity and AMF treatments. Mycorrhizal plants had significantly higher Na+ and K+ uptake, while Ca2+ uptake was not affected by salt or AMF colonization. The ratio of K+/Na+ increased by AMF in the shoot while it decreased in the roots. Leaf osmotic potential was lowered under salinity in both +AMF and -AMF plants. Our results indicated that higher dry matter production in the presence of salt and AMF could be attributed to higher CO2 and nitrate assimilation rates in the leaves. Higher leaf accumulation of soluble sugars and α-amino acids but not proline and elevated water-use efficiency were associated with the improved growth of A. littoralis inoculated with AMF. 
540 |a The Institute of Experimental Botany, 2015 
690 7 |a carotenoids  |2 nationallicence 
690 7 |a chlorophyll content  |2 nationallicence 
690 7 |a compatible solute  |2 nationallicence 
690 7 |a gas exchange  |2 nationallicence 
690 7 |a growth parameters  |2 nationallicence 
690 7 |a water relations  |2 nationallicence 
690 7 |a AMF : arbuscular mycorrhizal fungi  |2 nationallicence 
690 7 |a C a : ambient CO2 concentration  |2 nationallicence 
690 7 |a Car : carotenoids  |2 nationallicence 
690 7 |a Chl : chlorophyll  |2 nationallicence 
690 7 |a C i : intercellular CO2 concentration  |2 nationallicence 
690 7 |a DM : dry mass  |2 nationallicence 
690 7 |a E : transpiration rate  |2 nationallicence 
690 7 |a FM : fresh mass  |2 nationallicence 
690 7 |a g s : stomatal conductance  |2 nationallicence 
690 7 |a NR : nitrate reductase  |2 nationallicence 
690 7 |a PEPC : phosphoenolpyruvate carboxylase  |2 nationallicence 
690 7 |a P N : net CO2 assimilation rate  |2 nationallicence 
690 7 |a TM : turgid mass  |2 nationallicence 
690 7 |a WUE : water-use efficiency  |2 nationallicence 
700 1 |a Hajiboland  |D R.  |u Center of Excellence for Biodiversity, University of Tabriz, 51666-14779, Tabriz, Iran  |4 aut 
700 1 |a Dashtebani  |D F.  |u Plant Science Department, University of Tabriz, 51666-14779, Tabriz, Iran  |4 aut 
700 1 |a Aliasgharzad  |D N.  |u Center of Excellence for Biodiversity, University of Tabriz, 51666-14779, Tabriz, Iran  |4 aut 
773 0 |t Photosynthetica  |d The Institute of Experimental Biology of the Czech Academy of Sciences  |g 53/4(2015-12-01), 572-584  |x 0300-3604  |q 53:4<572  |1 2015  |2 53  |o 11099 
856 4 0 |u https://doi.org/10.1007/s11099-015-0131-4  |q text/html  |z Onlinezugriff via DOI 
898 |a BK010053  |b XK010053  |c XK010000 
900 7 |a Metadata rights reserved  |b Springer special CC-BY-NC licence  |2 nationallicence 
908 |D 1  |a research-article  |2 jats 
949 |B NATIONALLICENCE  |F NATIONALLICENCE  |b NL-springer 
950 |B NATIONALLICENCE  |P 856  |E 40  |u https://doi.org/10.1007/s11099-015-0131-4  |q text/html  |z Onlinezugriff via DOI 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Hajiboland  |D R.  |u Center of Excellence for Biodiversity, University of Tabriz, 51666-14779, Tabriz, Iran  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Dashtebani  |D F.  |u Plant Science Department, University of Tabriz, 51666-14779, Tabriz, Iran  |4 aut 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Aliasgharzad  |D N.  |u Center of Excellence for Biodiversity, University of Tabriz, 51666-14779, Tabriz, Iran  |4 aut 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Photosynthetica  |d The Institute of Experimental Biology of the Czech Academy of Sciences  |g 53/4(2015-12-01), 572-584  |x 0300-3604  |q 53:4<572  |1 2015  |2 53  |o 11099