Abstract
Climate change impacts on food security will involve negative impacts on crop yields, and potentially on the nutritional quality of staple crops. Common bean is the most important grain legume staple crop for human diets and nutrition worldwide. We demonstrate by crop modeling that the majority of current common bean growing areas in southeastern Africa will become unsuitable for bean cultivation by the year 2050. We further demonstrate reductions in yields of available common bean varieties in a field trial that is a climate analogue site for future predicted drought conditions. Little is known regarding the impact of climate change induced abiotic stresses on the nutritional quality of common beans. Our analysis of nutritional and antinutritional compounds reveals that iron levels in common bean grains are reduced under future climate-scenario relevant drought stress conditions. In contrast, the levels of protein, zinc, lead and phytic acid increase in the beans under such drought stress conditions. This indicates that under climate-change induced drought scenarios, future bean servings by 2050 will likely have lower nutritional quality, posing challenges for ongoing climate-proofing of bean production for yields, nutritional quality, human health, and food security.
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Claims 5
Claim · model-written summary
Most current common bean growing areas in southeastern Africa will become unsuitable for bean cultivation by 2050
- Taxon
- common bean
Phaseolus vulgarise0 - Outcome
- unsuitable for bean cultivatione0
- Setting
- southeastern Africae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We demonstrate by crop modeling that the majority of current common bean growing areas in southeastern Africa will become unsuitable for bean cultivation by the year 2050”
Claim · model-written summary
Yields of available common bean varieties were reduced in a field trial at a climate analogue site for future drought
- Taxon
- common beanPhaseolus vulgarise1
- Treatment
- climate analogue site for future predicted drought conditionse1
- Outcome
- yieldse1
- Direction
- reductionse1
- Setting
- field triale1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“We further demonstrate reductions in yields of available common bean varieties in a field trial that is a climate analogue site for future predicted drought conditions”
Claim · model-written summary
Iron levels in common bean grains are reduced under future climate-scenario drought stress
- Taxon
- common beanPhaseolus vulgarise2
- Organ / stage
- grainse2
- Treatment
- future climate-scenario relevant drought stress conditionse2
- Outcome
- iron levelse2
- Direction
- reducede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“iron levels in common bean grains are reduced under future climate-scenario relevant drought stress conditions”
Claim · model-written summary
Protein, zinc and lead levels increase in common bean under drought stress
- Taxon
- common beanPhaseolus vulgarise2
- Organ / stage
- beanse3
- Treatment
- drought stress conditionse3
- Outcome
- protein, zinc, leade3
- Direction
- increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“iron levels in common bean grains are reduced under future climate-scenario relevant drought stress conditions”
e3“the levels of protein, zinc, lead and phytic acid increase in the beans under such drought stress conditions”
Claim · model-written summary
Phytic acid levels increase in common bean under drought stress
- Taxon
- common beanPhaseolus vulgarise2
- Treatment
- drought stress conditionse3
- Outcome
- phytic acide3
- Direction
- increasee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“iron levels in common bean grains are reduced under future climate-scenario relevant drought stress conditions”
e3“the levels of protein, zinc, lead and phytic acid increase in the beans under such drought stress conditions”
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