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Soil Science and Plant Nutrition Volume 67, 2021 - Issue 4
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Plant nutrition

Sulfur application enhances secretion of organic acids by soybean roots and solubilization of phosphorus in rhizosphere

Hinako Sugiuraa Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, JapanView further author information
,
Soh Sugiharab Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, JapanORCID Iconhttps://orcid.org/0000-0002-5874-8957View further author information
ORCID Icon,
Takehiro Kamiyac Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, JapanView further author information
,
Maria Daniela Artigas Ramirezd Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, Tokyo, Japan;e Iriomote Station, Tropical Biosphere Research Center, University of the Ryukyus, Okinawa, JapanView further author information
,
Minori Miyatakea Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, JapanView further author information
,
Toru Fujiwarac Graduate School of Agricultural and Life Sciences, University of Tokyo, Tokyo, JapanView further author information
,
Ohyama Takujif Department of Agricultural Chemistry, Tokyo University of Agriculture, Tokyo, JapanView further author information
,
Takashi Motobayashib Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, JapanView further author information
,
Tadashi Yokoyamab Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan;g The Faculty of Food and Agricultural Science, Fukushima University, Fukushima, JapanView further author information
,
Sonoko Dorothea Bellingrath-Kimurah Land Use and Governance, Leibniz Centre for Agricultural Landscape Research, Müncheberg, Germany;i Faculty of Life Science, Humboldt University of Berlin, Berlin, GermanyView further author information
&
Naoko Ohkama-Ohtsub Institute of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan;d Institute of Global Innovation Research, Tokyo University of Agriculture and Technology, Tokyo, JapanCorrespondence[email protected]
View further author information
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Pages 400-407 | Received 28 Jan 2021, Accepted 15 Apr 2021, Published online: 24 Apr 2021

Figures & data

Figure 1. Changes in SPAD values from 3 to 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 10 biological replicates with standard error. Different letters on bars indicate significant differences in SPAD value between S treatments according to Tukey test (P < 0.05)

Figure 1. Changes in SPAD values from 3 to 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 10 biological replicates with standard error. Different letters on bars indicate significant differences in SPAD value between S treatments according to Tukey test (P < 0.05)

Figure 2. Shoot and root dry weight at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 10 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 2. Shoot and root dry weight at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 10 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 3. Shoot and root S concentrations (a) and content (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 5 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 3. Shoot and root S concentrations (a) and content (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 5 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 4. Number of nodules (a) and nodule fresh weight (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 10 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 4. Number of nodules (a) and nodule fresh weight (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 10 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 5. Acetylene reductase activity (ARA) per nodules fresh weight (a) and per plant (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 5 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 5. Acetylene reductase activity (ARA) per nodules fresh weight (a) and per plant (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 5 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 6. Shoot and root N concentrations (a) and content (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 5 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 6. Shoot and root N concentrations (a) and content (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 5 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 7. Organic acid concentrations (a) and content (b) secreted from roots 5 weeks after sowing in treatments with 0, 20, or 1000 µM S. Each value was mean of 4 biological replicates with standard error. Different letters on bars indicate significant differences in organic acid content between S treatments according to Tukey test (P < 0.05)

Figure 7. Organic acid concentrations (a) and content (b) secreted from roots 5 weeks after sowing in treatments with 0, 20, or 1000 µM S. Each value was mean of 4 biological replicates with standard error. Different letters on bars indicate significant differences in organic acid content between S treatments according to Tukey test (P < 0.05)

Figure 8. Shoot and root P concentrations (a) and content (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 5 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

Figure 8. Shoot and root P concentrations (a) and content (b) at 5 weeks after sowing with 0, 20, or 1000 µM S. Each value was mean of 5 biological replicates with standard error. Different letters on bars indicate significant differences between S treatments according to Tukey test (P < 0.05)

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