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| Publication Type | J |
| Authors | Marcum, KB; Anderson, SJ; Engelke, MC |
| Author Full Name | Marcum, KB; Anderson, SJ; Engelke, MC |
| Title | Salt gland ion secretion: A salinity tolerance mechanism among five zoysiagrass species |
| Source | CROP SCIENCE |
| Language | English |
| Document Type | Article |
| Keywords Plus | TURFGRASSES |
| Abstract | Need for salinity tolerant turfgrasses is increasing because of government mandates requiring use of low quality secondary water sources for turfgrass irrigation, This study was done to elucidate salinity tolerance mechanisms of the Zoysia genus (zoysiagrass), which includes a number of important turfgrasses. Research objectives were to (i) determine the range in salinity tolerance among and within five zoysiagrass species, (ii) determine if salt secretion via Leaf salt glands is an important salinity tolerance mechanism within the Zoysia genus, and (iii) determine if salinity tolerance is associated with the rate, or efficiency of leaf salt gland secretion. Fifty-seven zoysiagrass accessions and cultivars, representing five interfertile species, were grown in hydroponic tanks in a glasshouse. Salinity of treatment tanks was gradually raised prior to data collection to a final treatment Level of 400 mM NoCl. Relative salinity tolerance was determined by changes in percent leaf firing and percent leaf dry weight relative to control plants. Relative percent leaf firing varied from 19 to 80% among entries, indicating a wide range in relative salinity tolerance, Bicellular leaf salt glands were observed in all species, lying recumbent to the leaf surface in parallel ro cvs atop intercostal ridges, Relative salinity tolerance was negatively correlated with leaf sap Na+ concentration and positively correlated with leaf salt gland Na+ secretion rate and leaf gland density. This indicates that salinity tolerance in the Zoysia genus is associated with shoot saline ion exclusion vis leaf salt gland secretion, which, in turn, is related to leaf salt gland density. |
| Author Address | Univ Arizona, Dept Plant Sci, Tucson, AZ 85721 USA; Texas A&M Univ, Dept Soil & Crop Sci, College Stn, TX 77843 USA; Texas A&M Univ, Res & Extens Ctr, Dallas, TX 75252 USA |
| Reprint Address | Marcum, KB (reprint author), Univ Arizona, Dept Plant Sci, POB 210036, Tucson, AZ 85721 USA. |
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| Cited Reference Count | 25 |
| Times Cited | 69 |
| Total Times Cited Count (WoS, BCI, and CSCD) | 106 |
| Publisher | CROP SCIENCE SOC AMER |
| Publisher City | MADISON |
| Publisher Address | 677 S SEGOE ROAD, MADISON, WI 53711 USA |
| ISSN | 0011-183X |
| 29-Character Source Abbreviation | CROP SCI |
| ISO Source Abbreviation | Crop Sci. |
| Publication Date | MAY-JUN |
| Year Published | 1998 |
| Volume | 38 |
| Issue | 3 |
| Beginning Page | 806 |
| Ending Page | 810 |
| Page Count | 5 |
| Web of Science Category | Agronomy |
| Subject Category | Agriculture |
| Document Delivery Number | ZZ668 |
| Unique Article Identifier | WOS:000074754600030 |
| Plants associated with this reference |