Full TGIF Record # 175821
Item 1 of 1
DOI:10.21273/HORTSCI.46.2.311
Publication Type:
i
Refereed
Author(s):Liu, Liming; Du, Hongmei; Wang, Kai; Huang, Bingru; Wang, Zhaolong
Author Affiliation:Liu, Du, Kai Wang and Zhaolong Wang: School of Agricultural and Biological Sciences, Shanghai Jiao Tong University, MinHang District, Shanghai, China; Huang: Department of Plant Biology and Pathology, Rutgers University, New Brunswick, NJ
Title:Differential photosynthetic responses to salinity stress between two perennial grass species contrasting in salinity tolerance
Section:Turf management
Other records with the "Turf management" Section
Source:HortScience. Vol. 46, No. 2, February 2011, p. 311-316.
# of Pages:6
Publishing Information:Alexandria, VA: American Society for Horticultural Science
Related Web URL:http://www.springerlink.com/content/55v44061067q4p85/MediaObjects/11104_2009_153_MOESM1_ESM.doc
    Last checked: 02/22/2011
    Requires: Microsoft Word
    Notes: Table [of the] effects of amendments and metal treatments on root and shoot biomass after 30 days.
Keywords:TIC Keywords: Abiotic disorders; Chlorophyll content; Comparisons; Electrolyte leakage; Eremochloa ophiuroides; Paspalum vaginatum; Photochemical efficiency; Photosynthetic parameters; Physiological responses; Relative water content; SDS-PAGE; Salinity stress
Abstract/Contents:"Salinity is a detrimental abiotic stress for plant growth in salt-affected soils. The objective of this study was to examine photosynthetic responses to salinity stress in two warm-season turfgrasses differing in salinity tolerance. Salt-tolerant species seashore paspalum (Paspalum vaginatum) and salt-sensitive species centipedegrass (Eremochloa ophiuroides) were exposed to salinity at three NaCl concentrations (0, 300, and 500 mM) in a growth chamber. Turf quality, relative water content (RWC), and leaf photochemical efficiency (Fv/Fm) declined, whereas electrolyte leakage (EL) increased under the two NaCl regimes for both grass species, and the changes were more dramatic in centipedegrass than that in seashore paspalum as well as in the higher salinity concentration. Two grass species showed different phytosyntheticresponses to salinity stress. The earlier inhibition of photosynthesis in seashore paspalum was mainly associated with stomatal closure. As salinity increased and salinity stress prolonged, the inhibition of photosynthesis in seashore paspalum was mainly associated with non-stomatal factors. The inhibition of photosynthesis in centipedegrass was associated with both stomatal closure and non-stomatal factors at both salinity levels. The sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE)analysis demonstrated the Rubisco large subunit had no obvious decrease during the whole stress period under the 300-mM and 500-mM treatments in seashore paspalum, whereas it significantly decreased in centipedegrass under both the 300-mM and 500-mM treatments. The results indicated that the superior salinity tolerance in seashore paspalum, compared with centipedegrass, could be attributed to its maintenance of Rubisco stability, chlorophyll content, photochemical efficiency as well as photosynthetic rate (Pn) capacity under salinity stress."
Language:English
References:48
Note:Figures
Graphs
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Liu, L., H. Du, K. Wang, B. Huang, and Z. Wang. 2011. Differential photosynthetic responses to salinity stress between two perennial grass species contrasting in salinity tolerance. HortScience. 46(2):p. 311-316.
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DOI: 10.21273/HORTSCI.46.2.311
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