Abstract
Reductions of growth and symbiotic nitrogen fixation were studied in soybean exposed to simulated acid rain (SAR) applied to different sites. Soybean cultivar Okuharawase was grown in 1/5000a pots under a rain shelter. The plants were exposed to SAR from 15 days after sowing (DAS) to the flowering stage at 36 DAS. The sites of SAR application were foliage, soil and both foliage and soil, and the pH of SAR used was 2.7,3.5, 4.5 and 7.0 (control). At the flowering stage, leaf area per plant, apparent photosynthetic rate and root dry weight per plant decreased in proportion to decrease in the pH of SAR. The degree of decrease was similar between the plants exposed to SAR in foliage and soil and those in foliage, but the application of SAR to soil alone did not cause any change in the parameters. There was a consistent reduction in the number of nodules per plant, the fresh weight of nodules per plant and the rate of symbiotic nitorgen fixation, or acetylene reduction activity (ARA) regardless of the site of SAR application. ARA decreased in proportion to the decrease in the number anf fresh weight of nodules. The root dry weight significantly correlated with nodule number or nodule fresh weight. The reduction of growth and symbiotic nitrogen fixation in plants with exposure to SAR in foliage was similar to that with exposure in both foliage and soil, whereas SAR applied to soil alone suppressed nodulation only.
| Original language | English |
|---|---|
| Pages (from-to) | 596-602 |
| Number of pages | 7 |
| Journal | Japanese Journal of Crop Science |
| Volume | 66 |
| Issue number | 4 |
| Publication status | Published - Dec 1997 |
| Externally published | Yes |
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Keywords
- Acetylene reduction activity
- Acid rain
- Nodule
- Photosynthesis
- Soybean
- Symbiotic nitorgen fixation
ASJC Scopus subject areas
- Agronomy and Crop Science
Cite this
Reduction of growth and symbiotic nitrogen fixation in soybean as affected by the site of simulated acid rain application. / Wang, Xianyu; Tsuda, Makoto; Taniyama, Tetsuro.
In: Japanese Journal of Crop Science, Vol. 66, No. 4, 12.1997, p. 596-602.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Reduction of growth and symbiotic nitrogen fixation in soybean as affected by the site of simulated acid rain application
AU - Wang, Xianyu
AU - Tsuda, Makoto
AU - Taniyama, Tetsuro
PY - 1997/12
Y1 - 1997/12
N2 - Reductions of growth and symbiotic nitrogen fixation were studied in soybean exposed to simulated acid rain (SAR) applied to different sites. Soybean cultivar Okuharawase was grown in 1/5000a pots under a rain shelter. The plants were exposed to SAR from 15 days after sowing (DAS) to the flowering stage at 36 DAS. The sites of SAR application were foliage, soil and both foliage and soil, and the pH of SAR used was 2.7,3.5, 4.5 and 7.0 (control). At the flowering stage, leaf area per plant, apparent photosynthetic rate and root dry weight per plant decreased in proportion to decrease in the pH of SAR. The degree of decrease was similar between the plants exposed to SAR in foliage and soil and those in foliage, but the application of SAR to soil alone did not cause any change in the parameters. There was a consistent reduction in the number of nodules per plant, the fresh weight of nodules per plant and the rate of symbiotic nitorgen fixation, or acetylene reduction activity (ARA) regardless of the site of SAR application. ARA decreased in proportion to the decrease in the number anf fresh weight of nodules. The root dry weight significantly correlated with nodule number or nodule fresh weight. The reduction of growth and symbiotic nitrogen fixation in plants with exposure to SAR in foliage was similar to that with exposure in both foliage and soil, whereas SAR applied to soil alone suppressed nodulation only.
AB - Reductions of growth and symbiotic nitrogen fixation were studied in soybean exposed to simulated acid rain (SAR) applied to different sites. Soybean cultivar Okuharawase was grown in 1/5000a pots under a rain shelter. The plants were exposed to SAR from 15 days after sowing (DAS) to the flowering stage at 36 DAS. The sites of SAR application were foliage, soil and both foliage and soil, and the pH of SAR used was 2.7,3.5, 4.5 and 7.0 (control). At the flowering stage, leaf area per plant, apparent photosynthetic rate and root dry weight per plant decreased in proportion to decrease in the pH of SAR. The degree of decrease was similar between the plants exposed to SAR in foliage and soil and those in foliage, but the application of SAR to soil alone did not cause any change in the parameters. There was a consistent reduction in the number of nodules per plant, the fresh weight of nodules per plant and the rate of symbiotic nitorgen fixation, or acetylene reduction activity (ARA) regardless of the site of SAR application. ARA decreased in proportion to the decrease in the number anf fresh weight of nodules. The root dry weight significantly correlated with nodule number or nodule fresh weight. The reduction of growth and symbiotic nitrogen fixation in plants with exposure to SAR in foliage was similar to that with exposure in both foliage and soil, whereas SAR applied to soil alone suppressed nodulation only.
KW - Acetylene reduction activity
KW - Acid rain
KW - Nodule
KW - Photosynthesis
KW - Soybean
KW - Symbiotic nitorgen fixation
UR - http://www.scopus.com/inward/record.url?scp=0031468909&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031468909&partnerID=8YFLogxK
M3 - Article
VL - 66
SP - 596
EP - 602
JO - Japanese Journal of Crop Science
JF - Japanese Journal of Crop Science
SN - 1349-0990
IS - 4
ER -