Abstract
Abstract An extremely high pH, above 10, can occur in sodic soils and even in saline soils after heavy rainfall. The indirect and adverse effects on plant growth that are induced by a high soil pH have been well clarified and include nutritional disorders such as P, Fe and Zn deficiencies and NH3 and HCO3 − toxicities. However, studies of the growth injuries induced by the high pH itself are quite limited. We conducted studies to clarify the effect of a high pH on the growth of rice and tomato using a solution culture system developed to eliminate nutrient deficiencies and NH3 and HCO3 − toxicities. Although the P, Fe and Zn contents in the shoots were at a sufficiently high level, growth of the tomato and rice was markedly reduced by the high pH conditions (at pH 10 and 11). Our results show the existence of growth injuries in higher plants, induced by a pH above 10. Inhibition of root elongation might be the primary growth disturbance induced by the direct adverse effect of the high pH.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Growth of rice was markedly reduced at pH 10 and 11 despite sufficient shoot P, Fe and Zn.
- Taxon
- rice
Oryza sativat0 - Treatment
- high pH conditions (at pH 10 and 11)e0
- Outcome
- growthe0
- Direction
- markedly reducede0
- Qualifier
- P, Fe and Zn contents in the shoots were at a sufficiently high levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although the P, Fe and Zn contents in the shoots were at a sufficiently high level, growth of the tomato and rice was markedly reduced by the high pH conditions (at pH 10 and 11).”
t0“rice and tomato”
Claim · model-written summary
The authors suggest root elongation inhibition may be the primary direct high-pH growth injury in rice.
- Taxon
- riceOryza sativat0
- Treatment
- high pHe0
- Outcome
- Inhibition of root elongatione0
- Qualifier
- might be the primary growth disturbancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibition of root elongation might be the primary growth disturbance induced by the direct adverse effect of the high pH.”
t0“rice and tomato”
Claim · model-written summary
Growth of tomato was markedly reduced at pH 10 and 11 despite sufficient shoot P, Fe and Zn.
- Taxon
- tomato
Solanum lycopersicumt0 - Treatment
- high pH conditions (at pH 10 and 11)e0
- Outcome
- growthe0
- Direction
- markedly reducede0
- Qualifier
- P, Fe and Zn contents in the shoots were at a sufficiently high levele0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Although the P, Fe and Zn contents in the shoots were at a sufficiently high level, growth of the tomato and rice was markedly reduced by the high pH conditions (at pH 10 and 11).”
t0“rice and tomato”
Claim · model-written summary
The authors suggest root elongation inhibition may be the primary direct high-pH growth injury in tomato.
- Taxon
- tomatoSolanum lycopersicumt0
- Treatment
- high pHe0
- Outcome
- Inhibition of root elongatione0
- Qualifier
- might be the primary growth disturbancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Inhibition of root elongation might be the primary growth disturbance induced by the direct adverse effect of the high pH.”
t0“rice and tomato”
The same questions in other papers
alkalinity · growth · Solanum lycopersicum (tomato)Positive and negative results
6 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
8 papers more in this group
See all 12 papers →alkalinity · growth · Oryza sativa (rice)Positive and negative results
13 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 papers →ph · growth · Solanum lycopersicum (tomato)Positive and negative results
8 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
15 papers more in this group
See all 19 papers →ph · growth · Oryza sativa (rice)Positive and negative results
14 papers in the same direction as this paper · 11 in the opposite direction
- positive
- positive
- positive
22 papers more in this group
See all 26 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.