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| Publication Type | J |
| Authors | Rozema, J., J. Debruin and R. A. Broekman |
| Title | Effect of Boron on the Growth and Mineral Economy of Some Halophytes and Non-Halophytes |
| Source | New Phytologist |
| Author Keywords | boron; halophytes; boron resistance; boron toxicity; boron tolerance plants; roots |
| Abstract | Growth of halophytes in nutrient solutions with increasing boron concentrations was less reduced than that of some non-halophytes. Boron (B) concentrations occurring in sea water (0.350 mol m-3 B) depressed growth of glycophytic plant species strongly, while growth of halophytes did not significantly differ from that under control conditions (Hoagland's nutrient solution containing 0.025 mol m-3 B). With increasing boron concentrations in the medium, the total boron concentrations in the shoot tissue increased up to 35-mu-mol B g-1 d. wt (350 mg kg-1 B d. wt basis) in the non-halophytic species and were lower in most of the halophytic species examined. Sodium chloride (200 mol m-3) in the culture medium depressed the total B content of the shoot in the halophytic species. In most halophytic species, the water-insoluble B fraction in the shoot and root tissue was higher than in the non-halophytic species tested with the exception of Phaseolus vulgaris. When the plants were grown in culture solution containing 200 mol m-3 NaCl, the ratio of insoluble: total B in shoot and root tissue increased. The resistance of halophytes to excess B and the possible detoxification of excess borate by complexation, either with cis-diol groups of carboxyl groups in the cell walls or with dissolved compounds such as sorbitol in the halophytic Plantago maritima is discussed. The mechanism by which B tolerance in the halophytes might be accomplished is also discussed. |
| Author Address | ROZEMA, J, FREE UNIV AMSTERDAM,DEPT ECOL & ECOTOXICOL,DE BOELELAAN 1087,1081 HV AMSTERDAM,NETHERLANDS. |
| 29-Character Source Abbreviation | New Phytol. |
| Publication Date | Jun |
| Year Published | 1992 |
| Volume | 121 |
| Issue | 2 |
| Beginning Page | 249-256 |
| Unique Article Identifier | ISI:A1992JA40800011 |
| Plants associated with this reference |