Abstract
Lateral root is primary organ for plant to explore and utilize soil nutrient efficiently. The development of lateral roots (LR) is controlled by both genetic factors and nutrient status in environment. To investigate the effects of nitrate (NO - 3) on rice lateral root growth and nitrogen (N) uptake efficiency under upland condition, three treatments, including root_split culture and whole plant culture in N sufficient and deficient conditions, were used in a vermiculite culture experiment. Root_split treatment showed that the growth of lateral roots was stimulated by localized nitrate supply. However, in whole plant culture, elongation of lateral roots was induced by NO - 3 deficiency. The effects of NO - 3 on rice lateral root growth were genotype_dependent. Similar N concentration, soluble sugar concentration and N content in shoot were observed in both root_split treatment and whole plant culture under NO - 3 sufficient condition, suggesting that the nitrogen requirement for rice normal growth could be satisfied with only half of roots supplied with NO - 3. In the root_split treatment, N uptake was positively correlated with the average of lateral root length (ALRL) in NO - 3_supplied side, suggesting that the ALRL is important for rice root N uptake in the environment where the nitrogen nutrient is limiting factor. No significant correlation was observed between N uptake and ALRL in whole plant culture under N sufficient condition, which implies that the length of lateral roots may not be the main factor to determine the rice root N uptake in nutrient_rich zone. Morphological and metabolic evidence in this study provided some prospects for genetic improvement of root system characters to improve the efficiency of nutrient absorption in rice.
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 9
Claim · model-written summary
Localized nitrate supply stimulated lateral root growth.
- Taxon
- Rice
Oryza sativat0 - Treatment
- localized nitrate supplye0
- Outcome
- growth of lateral rootse0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the growth of lateral roots was stimulated by localized nitrate supply.”
t0“Rice”
Claim · model-written summary
Nitrate deficiency induced lateral root elongation in whole plant culture.
- Taxon
- RiceOryza sativat0
- Treatment
- NO - 3 deficiencye0
- Outcome
- elongation of lateral rootse0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in whole plant culture, elongation of lateral roots was induced by NO - 3 deficiency.”
t0“Rice”
Claim · model-written summary
Nitrate effects on lateral root growth depended on genotype.
- Taxon
- riceOryza sativae0
- Treatment
- NO - 3e0
- Outcome
- lateral root growthe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of NO - 3 on rice lateral root growth were genotype_dependent.”
Claim · model-written summary
Shoot nitrogen concentration was similar in split and whole plant cultures.
- Taxon
- RiceOryza sativat0
- Treatment
- root_split treatmente0
- Outcome
- N concentratione0
- Direction
- Similare0
- Comparator
- whole plant culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar N concentration, soluble sugar concentration and N content in shoot were observed in both root_split treatment and whole plant culture under NO - 3 sufficient condition”
t0“Rice”
Claim · model-written summary
Shoot soluble sugar concentration was similar in split and whole plant cultures.
- Taxon
- RiceOryza sativat0
- Treatment
- root_split treatmente0
- Outcome
- soluble sugar concentratione0
- Direction
- Similare0
- Comparator
- whole plant culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar N concentration, soluble sugar concentration and N content in shoot were observed in both root_split treatment and whole plant culture under NO - 3 sufficient condition”
t0“Rice”
Claim · model-written summary
Shoot nitrogen content was similar in split and whole plant cultures.
- Taxon
- RiceOryza sativat0
- Treatment
- root_split treatmente0
- Outcome
- N contente0
- Direction
- Similare0
- Comparator
- whole plant culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Similar N concentration, soluble sugar concentration and N content in shoot were observed in both root_split treatment and whole plant culture under NO - 3 sufficient condition”
t0“Rice”
Claim · model-written summary
The authors inferred that nitrate supplied to half the roots can meet normal growth needs.
- Taxon
- riceOryza sativae0
- Treatment
- half of roots supplied with NO - 3e0
- Outcome
- nitrogen requirement for rice normal growthe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the nitrogen requirement for rice normal growth could be satisfied with only half of roots supplied with NO - 3.”
Claim · model-written summary
Nitrogen uptake correlated positively with average lateral root length on the supplied side.
- Taxon
- RiceOryza sativat0
- Organ / stage
- lateral roote0
- Outcome
- N uptakee0
- Direction
- positively correlatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“N uptake was positively correlated with the average of lateral root length (ALRL) in NO - 3_supplied side”
t0“Rice”
Claim · model-written summary
Nitrogen uptake and lateral root length did not correlate significantly in sufficient whole plant culture.
- Taxon
- RiceOryza sativat0
- Organ / stage
- ALRLe0
- Outcome
- N uptakee0
- Direction
- No significant correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant correlation was observed between N uptake and ALRL in whole plant culture under N sufficient condition”
t0“Rice”
The same questions in other papers
nitric oxide · growth · Oryza sativa (rice)Results differ
13 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
12 papers more in this group
See all 16 papers →nitrogen · growth · Oryza sativa (rice)Positive and negative results
401 papers in the same direction as this paper · 101 in the opposite direction · 8 reporting no difference from an alternative
- negative
- negative
- negative
507 papers more in this group
See all 511 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.