Overcoming the Stressful Effects of Salinity and Acidity on Soybean Nodulation and Yields Using Signal Molecule Genistein Under Field Conditions
- 3 December 2007
- journal article
- research article
- Published by Informa UK Limited in Journal of Plant Nutrition
- Vol. 30 (12), 1967-1992
- https://doi.org/10.1080/01904160701700384
Abstract
Soil stresses such as salinity and acidity may adversely affect nitrogen (N)2-fixation. The hypothesis of this study is that soil salinity and acidity inhibit soybean [Glycine max (L.) Merr.] nodulation and N2-fixation due to, at least in part, disruption of the signal exchange process. The objectives were: 1) to determine the effects of stressful soil salinity and acidity on the signal exchange processes between soybean and Bradyrhizobium japonicum, and 2) to determine whether or not the addition of signal molecule genistein to B. japonicum can overcome at least part of the inhibition of nodulation, caused by stressful soil salinity and acidity. Salt (sodium chloride) and sulfur (S) were applied. Genistein (0, 5, and 20μ M) was tested. Genistein addition could partially overcome the salt and acidity stresses by increasing soybean yields up to 21% and 23%, respectively. These novel findings may be very useful for planting soybean under salinity and acidity stresses.Keywords
This publication has 71 references indexed in Scilit:
- Genistein addition to the rooting medium of soybean at the onset of nitrogen fixation increases nodulationJournal of Plant Nutrition, 1998
- Effect of low pH on nitrogen fixation of common bean grown at various calcium and nitrate levelsJournal of Plant Nutrition, 1997
- Salinity effects on growth analysis and nutrient composition in four grain legumes‐rhizobiumsymbiosisJournal of Plant Nutrition, 1995
- Root zone temperature sensitivity of nitrogen fixing and nitrate-supplied soybean [Glycine max (L.) Merr. cv maple arrow] and lupin (Lupinus albus L. cv ultra) plantsEnvironmental and Experimental Botany, 1994
- Signals in Root Nodule Organogenesis and Endocytosis of Rhizobium.Plant Cell, 1992
- Long Distance Transport of Abscisic Acid in NaCI-Treated Intact Plants ofLupinus albusJournal of Experimental Botany, 1990
- Nodulation ofMedicago sativa in solution culturePlant and Soil, 1970
- The effect of low pH on different phases of nodule formation in pea plantsPlant and Soil, 1969
- Nodulation ofMedicago sativa in solution culturePlant and Soil, 1968
- Diagnostic features in the characterisation of the root-nodule bacteria of legumesPlant and Soil, 1964