Abstract
Drought and low phosphorus (P) availability are major limitations for rainfed rice production. Crop roots are important for soil resource acquisition and tolerance to P and water limitations. Two pot and two field trials were conducted to evaluate architectural root responses of contrasting rice varieties to combinations of different levels of P (deficient to non-limiting) and water availability (water stressed to submergence) and to identify the interactions with different varieties. Root development was then related to drought and/or low P tolerance. Although shoot and root growth responded more to P than to water availability, architectural root responses to water were much more prominent than responses to P availability. Reduced water availability decreased nodal thickness and increased secondary root branching, both factors partially enhancing P uptake efficiency and even overcoming a decreased root:shoot ratio under reduced water availability. In contrast to root thickness and secondary branching, basal lateral root density was strongly determined by variety and was related to enhanced P uptake. Reduced water availability induces root modifications which—apart from enhancing drought resilience—also affect P uptake efficiency. Future research on rice roots and nutrient uptake may hence take into account the large effects of water on root development.
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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 7
Claim · model-written summary
Reduced water availability decreased nodal thickness of rice roots.
- Taxon
- rice
Oryza sativat0 - Material
- contrasting rice varietiese0
- Treatment
- Reduced water availabilitye1
- Outcome
- nodal thicknesse1
- Direction
- decreasede1
- Setting
- pot and two field trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Architectural Root Responses of Rice to Reduced Water Availability Can Overcome Phosphorus Stress”
e0“Two pot and two field trials were conducted to evaluate architectural root responses of contrasting rice varieties to combinations of different levels of P (deficient to non-limiting) and water availability (water stressed to submergence)”
e1“Reduced water availability decreased nodal thickness and increased secondary root branching”
Claim · model-written summary
Reduced water availability increased secondary root branching of rice.
- Taxon
- riceOryza sativat0
- Material
- contrasting rice varietiese0
- Treatment
- Reduced water availabilitye1
- Outcome
- secondary root branchinge1
- Direction
- increasede1
- Setting
- pot and two field trialse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Architectural Root Responses of Rice to Reduced Water Availability Can Overcome Phosphorus Stress”
e0“Two pot and two field trials were conducted to evaluate architectural root responses of contrasting rice varieties to combinations of different levels of P (deficient to non-limiting) and water availability (water stressed to submergence)”
e1“Reduced water availability decreased nodal thickness and increased secondary root branching”
Claim · model-written summary
Nodal thinning and secondary branching under reduced water availability enhanced P uptake efficiency of rice.
- Taxon
- riceOryza sativat0
- Treatment
- Reduced water availabilitye1
- Outcome
- P uptake efficiencye2
- Direction
- increaseinferrede2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Architectural Root Responses of Rice to Reduced Water Availability Can Overcome Phosphorus Stress”
e1“Reduced water availability decreased nodal thickness and increased secondary root branching”
e2“both factors partially enhancing P uptake efficiency”
Claim · model-written summary
Shoot and root growth of rice responded more to P availability than to water availability.
- Taxon
- riceOryza sativat0
- Treatment
- P availabilitye3
- Outcome
- shoot and root growthe3
- Direction
- higherinferrede3
- Comparator
- water availabilitye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Architectural Root Responses of Rice to Reduced Water Availability Can Overcome Phosphorus Stress”
e3“Although shoot and root growth responded more to P than to water availability, architectural root responses to water were much more prominent than responses to P availability”
Claim · model-written summary
Architectural root responses of rice to water were more prominent than responses to P availability.
- Taxon
- riceOryza sativat0
- Treatment
- watere3
- Outcome
- architectural root responsese3
- Direction
- higherinferrede3
- Comparator
- P availabilitye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Architectural Root Responses of Rice to Reduced Water Availability Can Overcome Phosphorus Stress”
e3“Although shoot and root growth responded more to P than to water availability, architectural root responses to water were much more prominent than responses to P availability”
Claim · model-written summary
Basal lateral root density of rice was strongly determined by variety.
- Taxon
- riceOryza sativat0
- Material
- varietye4
- Outcome
- basal lateral root densitye4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Architectural Root Responses of Rice to Reduced Water Availability Can Overcome Phosphorus Stress”
e4“basal lateral root density was strongly determined by variety and was related to enhanced P uptake”
Claim · model-written summary
Basal lateral root density of rice was related to enhanced P uptake.
- Taxon
- riceOryza sativat0
- Organ / stage
- basal lateral root densitye4
- Outcome
- P uptakee4
- Direction
- increaseinferrede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Architectural Root Responses of Rice to Reduced Water Availability Can Overcome Phosphorus Stress”
e4“basal lateral root density was strongly determined by variety and was related to enhanced P uptake”
The same questions in other papers
soil water · growth · Oryza sativa (rice)Positive and negative results
20 papers in the same direction as this paper · 18 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
36 papers more in this group
See all 40 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.