Abstract
Abstract Cassava ( Manihot esculenta ) is an important crop for food security in the tropics, particularly for smallholder farmers in sub-Saharan Africa, where yields are often severely limited by pathogen pressure, nutrient deficiency and water scarcity. We expressed a non-rectifying Arabidopsis thaliana potassium (K + ) channel gene version, AKT2 var , in the vascular tissue of cassava plants. The transgenic cassava plants had higher electron transport and CO 2 assimilation rates, a higher bulk flow velocity and increased source–sink carbohydrate transport, as demonstrated by comparative 11 C-positron emission tomography and tissue-specific metabolite profiling. Cassava storage root yield was significantly increased in greenhouse experiments and in a multi-year field trial conducted under subtropical conditions. AKT2 var plants were also more tolerant of drought stress and had higher storage root yield. Targeted alteration of K + transport is therefore a promising strategy to improve cassava productivity without additional fertilizer input and in climate-adverse growing conditions.
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Claims 6
Claim · model-written summary
Transgenic cassava had higher electron transport and CO2 assimilation rates.
- Taxon
- cassava
Manihot esculentae0 - Treatment
- transgenice0
- Outcome
- electron transport and CO 2 assimilation ratese0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transgenic cassava plants had higher electron transport and CO 2 assimilation rates”
Claim · model-written summary
Transgenic cassava had higher bulk flow velocity and source–sink carbohydrate transport.
- Taxon
- cassavaManihot esculentae0
- Treatment
- transgenice0
- Outcome
- bulk flow velocity and increased source–sink carbohydrate transporte0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The transgenic cassava plants had higher electron transport and CO 2 assimilation rates, a higher bulk flow velocity and increased source–sink carbohydrate transport”
Claim · model-written summary
Cassava storage root yield increased significantly in greenhouse and multiyear field experiments.
- Taxon
- CassavaManihot esculentae0
- Organ / stage
- storage roote0
- Outcome
- storage root yielde0
- Direction
- increasede0
- Setting
- greenhouse experiments and in a multi-year field trial conducted under subtropical conditionse0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cassava storage root yield was significantly increased in greenhouse experiments and in a multi-year field trial conducted under subtropical conditions.”
Claim · model-written summary
AKT2 var cassava plants were more drought tolerant.
- Taxon
- cassavaManihot esculentat0
- Treatment
- drought stresse0
- Gene
- AKT2 vare0
- Outcome
- tolerant of drought stresse0
- Direction
- more tolerante0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AKT2 var plants were also more tolerant of drought stress”
t0“cassava”
Claim · model-written summary
AKT2 var cassava plants had higher storage root yield under drought stress.
- Taxon
- cassavaManihot esculentat0
- Treatment
- drought stresse0
- Gene
- AKT2 vare0
- Outcome
- storage root yielde0
- Direction
- highere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“AKT2 var plants were also more tolerant of drought stress and had higher storage root yield.”
t0“cassava”
Claim · model-written summary
The authors propose targeted K+ transport alteration to improve cassava productivity without added fertilizer and under adverse climate.
- Taxon
- cassavaManihot esculentae0
- Outcome
- improve cassava productivitye0
- Qualifier
- without additional fertilizer input and in climate-adverse growing conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Targeted alteration of K + transport is therefore a promising strategy to improve cassava productivity without additional fertilizer input and in climate-adverse growing conditions.”
The same questions in other papers
drought · yield · Manihot esculenta (cassava)Positive and negative results
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- negative
- negative
- negative
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See all 20 papers →drought · disease · Manihot esculenta (cassava)Results agree
1 paper in the same direction as this paper
- positive
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.