Abstract
Abstract Experiments were conducted in an environmentally controlled growth chamber to evaluate the role of the root system in the salt tolerance of two soybean (Glycine max(L.) Merr.) cultivars, Tachiyutaka and Dare, that differ in salt tolerance. Young plants were submitted to 0 (control), 40, 80, and 120 mM NaCl treatments for 3, 23, and 30 days in three experiments, respectively. The most significant differences between the two cultivars were obtained in 40 mM NaCl. Under this condition, compared with salt sensitive cv. Tachiyutaka, tolerant cv. Dare showed a higher relative shoot and root growth (Dare: 70 and 63%, Tachiyutaka: 42 and 42%, respectively), water extraction ability (Dare: 0.18 g cm−2 d−1 for transpiration and 0.98 g m−1 d−1 for water uptake, Tachiyutaka: 0.13 g cm−2 d−1 and 0.81 g m−1 d−1 respectively), root pressure (Dare: 5.68 mg g−1 for root exudate, Tachiyutaka: 0.32 mg g−1), better root osmotic adjustment (Dare: −0.61 MPa for osmotic potential, Tachiyutaka: −0.59 MPa), and less sodium (Na+) accumulation in plant tissue (Dare: 0.1, 0.4, and 9.2 mg g−1 in leaf, stem, and root, respectively, Tachiyutaka: 1.4, 3.5, and 11.6 mg g−1). The difference in salt tolerance between the two cultivars is attributed to the root system. The salt tolerance of cv. Dare is associated with high water uptake, and Na+ and chloride (Cl−) exclusion of the roots. ACKNOWLEDGMENTS The authors are grateful to Dr. Nafisa and A. Matsura for their valuable suggestions and discussion.
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Claims 9
Claim · model-written summary
Under 40 mM NaCl, cv. Dare showed higher relative shoot and root growth than cv. Tachiyutaka (70 and 63% versus 42 and 42%).
- Taxon
- soybean
Glycine maxt0 - Material
- cv. Daree1
- Treatment
- 40 mM NaCle2
- Outcome
- relative shoot and root growthe1
- Direction
- highere1
- Value
- 70 and 63%e1
- Qualifier
- Tachiyutaka: 42 and 42%e1
- Comparator
- salt sensitive cv. Tachiyutakae1
- Setting
- environmentally controlled growth chambere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SALT TOLERANCE IN TWO SOYBEAN CULTIVARS”
e0“Experiments were conducted in an environmentally controlled growth chamber”
e1“compared with salt sensitive cv. Tachiyutaka, tolerant cv. Dare showed a higher relative shoot and root growth (Dare: 70 and 63%, Tachiyutaka: 42 and 42%, respectively), water extraction ability (Dare: 0.18 g cm−2 d−1 for transpiration and 0.98 g m−1 d−1 for water uptake, Tachiyutaka: 0.13 g cm−2 d−1 and 0.81 g m−1 d−1 respectively), root pressure (Dare: 5.68 mg g−1 for root exudate, Tachiyutaka: 0.32 mg g−1), better root osmotic adjustment (Dare: −0.61 MPa for osmotic potential, Tachiyutaka: −0.59 MPa), and less sodium (Na+) accumulation in plant tissue (Dare: 0.1, 0.4, and 9.2 mg g−1 in leaf, stem, and root, respectively, Tachiyutaka: 1.4, 3.5, and 11.6 mg g−1)”
e2“The most significant differences between the two cultivars were obtained in 40 mM NaCl”
Claim · model-written summary
Under 40 mM NaCl, cv. Dare showed higher transpiration than cv. Tachiyutaka (0.18 versus 0.13 g cm−2 d−1).
- Taxon
- soybeanGlycine maxt0
- Material
- cv. Daree1
- Treatment
- 40 mM NaCle2
- Outcome
- transpiratione1
- Direction
- highere1
- Value
- 0.18 g cm−2 d−1e1
- Qualifier
- Tachiyutaka: 0.13 g cm−2 d−1e1
- Comparator
- salt sensitive cv. Tachiyutakae1
- Setting
- environmentally controlled growth chambere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SALT TOLERANCE IN TWO SOYBEAN CULTIVARS”
e0“Experiments were conducted in an environmentally controlled growth chamber”
e1“compared with salt sensitive cv. Tachiyutaka, tolerant cv. Dare showed a higher relative shoot and root growth (Dare: 70 and 63%, Tachiyutaka: 42 and 42%, respectively), water extraction ability (Dare: 0.18 g cm−2 d−1 for transpiration and 0.98 g m−1 d−1 for water uptake, Tachiyutaka: 0.13 g cm−2 d−1 and 0.81 g m−1 d−1 respectively), root pressure (Dare: 5.68 mg g−1 for root exudate, Tachiyutaka: 0.32 mg g−1), better root osmotic adjustment (Dare: −0.61 MPa for osmotic potential, Tachiyutaka: −0.59 MPa), and less sodium (Na+) accumulation in plant tissue (Dare: 0.1, 0.4, and 9.2 mg g−1 in leaf, stem, and root, respectively, Tachiyutaka: 1.4, 3.5, and 11.6 mg g−1)”
e2“The most significant differences between the two cultivars were obtained in 40 mM NaCl”
Claim · model-written summary
Under 40 mM NaCl, cv. Dare showed higher water uptake than cv. Tachiyutaka (0.98 versus 0.81 g m−1 d−1).
- Taxon
- soybeanGlycine maxt0
- Material
- cv. Daree1
- Treatment
- 40 mM NaCle2
- Outcome
- water uptakee1
- Direction
- highere1
- Value
- 0.98 g m−1 d−1e1
- Qualifier
- 0.81 g m−1 d−1e1
- Comparator
- salt sensitive cv. Tachiyutakae1
- Setting
- environmentally controlled growth chambere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SALT TOLERANCE IN TWO SOYBEAN CULTIVARS”
e0“Experiments were conducted in an environmentally controlled growth chamber”
e1“compared with salt sensitive cv. Tachiyutaka, tolerant cv. Dare showed a higher relative shoot and root growth (Dare: 70 and 63%, Tachiyutaka: 42 and 42%, respectively), water extraction ability (Dare: 0.18 g cm−2 d−1 for transpiration and 0.98 g m−1 d−1 for water uptake, Tachiyutaka: 0.13 g cm−2 d−1 and 0.81 g m−1 d−1 respectively), root pressure (Dare: 5.68 mg g−1 for root exudate, Tachiyutaka: 0.32 mg g−1), better root osmotic adjustment (Dare: −0.61 MPa for osmotic potential, Tachiyutaka: −0.59 MPa), and less sodium (Na+) accumulation in plant tissue (Dare: 0.1, 0.4, and 9.2 mg g−1 in leaf, stem, and root, respectively, Tachiyutaka: 1.4, 3.5, and 11.6 mg g−1)”
e2“The most significant differences between the two cultivars were obtained in 40 mM NaCl”
Claim · model-written summary
Under 40 mM NaCl, cv. Dare showed higher root pressure than cv. Tachiyutaka (5.68 versus 0.32 mg g−1).
- Taxon
- soybeanGlycine maxt0
- Material
- cv. Daree1
- Treatment
- 40 mM NaCle2
- Outcome
- root pressuree1
- Direction
- highere1
- Value
- 5.68 mg g−1e1
- Qualifier
- Tachiyutaka: 0.32 mg g−1e1
- Comparator
- salt sensitive cv. Tachiyutakae1
- Setting
- environmentally controlled growth chambere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SALT TOLERANCE IN TWO SOYBEAN CULTIVARS”
e0“Experiments were conducted in an environmentally controlled growth chamber”
e1“compared with salt sensitive cv. Tachiyutaka, tolerant cv. Dare showed a higher relative shoot and root growth (Dare: 70 and 63%, Tachiyutaka: 42 and 42%, respectively), water extraction ability (Dare: 0.18 g cm−2 d−1 for transpiration and 0.98 g m−1 d−1 for water uptake, Tachiyutaka: 0.13 g cm−2 d−1 and 0.81 g m−1 d−1 respectively), root pressure (Dare: 5.68 mg g−1 for root exudate, Tachiyutaka: 0.32 mg g−1), better root osmotic adjustment (Dare: −0.61 MPa for osmotic potential, Tachiyutaka: −0.59 MPa), and less sodium (Na+) accumulation in plant tissue (Dare: 0.1, 0.4, and 9.2 mg g−1 in leaf, stem, and root, respectively, Tachiyutaka: 1.4, 3.5, and 11.6 mg g−1)”
e2“The most significant differences between the two cultivars were obtained in 40 mM NaCl”
Claim · model-written summary
Under 40 mM NaCl, cv. Dare showed better root osmotic adjustment than cv. Tachiyutaka (osmotic potential −0.61 versus −0.59 MPa).
- Taxon
- soybeanGlycine maxt0
- Material
- cv. Daree1
- Treatment
- 40 mM NaCle2
- Outcome
- root osmotic adjustmente1
- Direction
- bettere1
- Value
- −0.61 MPae1
- Qualifier
- Tachiyutaka: −0.59 MPae1
- Comparator
- salt sensitive cv. Tachiyutakae1
- Setting
- environmentally controlled growth chambere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SALT TOLERANCE IN TWO SOYBEAN CULTIVARS”
e0“Experiments were conducted in an environmentally controlled growth chamber”
e1“compared with salt sensitive cv. Tachiyutaka, tolerant cv. Dare showed a higher relative shoot and root growth (Dare: 70 and 63%, Tachiyutaka: 42 and 42%, respectively), water extraction ability (Dare: 0.18 g cm−2 d−1 for transpiration and 0.98 g m−1 d−1 for water uptake, Tachiyutaka: 0.13 g cm−2 d−1 and 0.81 g m−1 d−1 respectively), root pressure (Dare: 5.68 mg g−1 for root exudate, Tachiyutaka: 0.32 mg g−1), better root osmotic adjustment (Dare: −0.61 MPa for osmotic potential, Tachiyutaka: −0.59 MPa), and less sodium (Na+) accumulation in plant tissue (Dare: 0.1, 0.4, and 9.2 mg g−1 in leaf, stem, and root, respectively, Tachiyutaka: 1.4, 3.5, and 11.6 mg g−1)”
e2“The most significant differences between the two cultivars were obtained in 40 mM NaCl”
Claim · model-written summary
Under 40 mM NaCl, cv. Dare accumulated less sodium in plant tissue than cv. Tachiyutaka (leaf, stem and root values given).
- Taxon
- soybeanGlycine maxt0
- Material
- cv. Daree1
- Organ / stage
- leaf, stem, and roote1
- Treatment
- 40 mM NaCle2
- Outcome
- sodium (Na+) accumulation in plant tissuee1
- Direction
- lesse1
- Value
- 0.1, 0.4, and 9.2 mg g−1e1
- Comparator
- salt sensitive cv. Tachiyutakae1
- Setting
- environmentally controlled growth chambere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SALT TOLERANCE IN TWO SOYBEAN CULTIVARS”
e0“Experiments were conducted in an environmentally controlled growth chamber”
e1“compared with salt sensitive cv. Tachiyutaka, tolerant cv. Dare showed a higher relative shoot and root growth (Dare: 70 and 63%, Tachiyutaka: 42 and 42%, respectively), water extraction ability (Dare: 0.18 g cm−2 d−1 for transpiration and 0.98 g m−1 d−1 for water uptake, Tachiyutaka: 0.13 g cm−2 d−1 and 0.81 g m−1 d−1 respectively), root pressure (Dare: 5.68 mg g−1 for root exudate, Tachiyutaka: 0.32 mg g−1), better root osmotic adjustment (Dare: −0.61 MPa for osmotic potential, Tachiyutaka: −0.59 MPa), and less sodium (Na+) accumulation in plant tissue (Dare: 0.1, 0.4, and 9.2 mg g−1 in leaf, stem, and root, respectively, Tachiyutaka: 1.4, 3.5, and 11.6 mg g−1)”
e2“The most significant differences between the two cultivars were obtained in 40 mM NaCl”
Claim · model-written summary
The salt tolerance difference between the two soybean cultivars is attributed to the root system.
- Taxon
- soybeanGlycine maxt0
- Outcome
- salt tolerancee3
- Qualifier
- root systeme3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SALT TOLERANCE IN TWO SOYBEAN CULTIVARS”
e3“The difference in salt tolerance between the two cultivars is attributed to the root system”
Claim · model-written summary
Salt tolerance of cv. Dare is associated with high water uptake.
- Taxon
- soybeanGlycine maxt0
- Material
- cv. Daree4
- Outcome
- salt tolerancee4
- Direction
- higherinferrede4
- Qualifier
- high water uptakee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SALT TOLERANCE IN TWO SOYBEAN CULTIVARS”
e4“The salt tolerance of cv. Dare is associated with high water uptake, and Na+ and chloride (Cl−) exclusion of the roots”
Claim · model-written summary
Salt tolerance of cv. Dare is associated with Na+ and chloride exclusion by the roots.
- Taxon
- soybeanGlycine maxt0
- Material
- cv. Daree4
- Outcome
- salt tolerancee4
- Direction
- higherinferrede4
- Qualifier
- Na+ and chloride (Cl−) exclusion of the rootse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“SALT TOLERANCE IN TWO SOYBEAN CULTIVARS”
e4“The salt tolerance of cv. Dare is associated with high water uptake, and Na+ and chloride (Cl−) exclusion of the roots”
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