Abstract
Summary Root architecture remodelling is critical for forage moisture in water‐limited soil. DEEPER ROOTING 1 ( DRO1 ) in Oryza , Arabidopsis , and Prunus has been reported to improve drought avoidance by promoting roots to grow downward and acquire water from deeper soil. In the present study, we found that ZmDRO1 responded more strongly to abscisic acid (ABA)/drought induction in Zea mays ssp . mexicana , an ancestral species of cultivated maize, than in B73. It was proposed that this is one of the reasons why Zea mays ssp . mexicana has a more noticeable change in the downward direction angle of the root and fewer biomass penalties under water‐deficient conditions. Thus, a robust, synthetic ABA/drought‐inducible promoter was used to control the expression of ZmDRO1 B73 in Arabidopsis and cultivated maize for drought‐resistant breeding. Interestingly, ABA‐inducible ZmDRO1 promoted a larger downward root angle and improved grain yield by more than 40% under water‐limited conditions. Collectively, these results revealed that different responses to ABA/drought induction of ZmDRO1 confer different drought avoidance abilities, and we demonstrated the application of ZmDRO1 via an ABA‐inducible strategy to alter the root architecture of modern maize to improve drought adaptation in the field.
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Claims 4
Claim · model-written summary
ZmDRO1 responded more strongly to ABA and drought in mexicana than B73.
- Material
- Zea mays ssp . mexicanae0
- Treatment
- abscisic acid (ABA)/drought inductione0
- Gene
- ZmDRO1e0
- Outcome
- responded more stronglye0
- Direction
- more stronglye0
- Comparator
- B73e0
Zea maysNot reportedSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ZmDRO1 responded more strongly to abscisic acid (ABA)/drought induction in Zea mays ssp . mexicana , an ancestral species of cultivated maize, than in B73.”
Claim · model-written summary
The authors propose this response helps explain deeper rooting angle changes and fewer biomass penalties in mexicana.
- Outcome
- downward direction angle of the root and fewer biomass penaltiese0
- Qualifier
- water‐deficient conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It was proposed that this is one of the reasons why Zea mays ssp . mexicana has a more noticeable change in the downward direction angle of the root and fewer biomass penalties under water‐deficient conditions.”
Claim · model-written summary
ABA inducible ZmDRO1 promoted a larger downward root angle.
- Treatment
- ABA‐inducible ZmDRO1e0
- Gene
- ZmDRO1e0
- Outcome
- downward root anglee0
- Direction
- largere0
- Qualifier
- water‐limited conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA‐inducible ZmDRO1 promoted a larger downward root angle and improved grain yield by more than 40% under water‐limited conditions.”
t0“maize”
Claim · model-written summary
ABA inducible ZmDRO1 improved grain yield more than 40% under water limitation.
- Treatment
- ABA‐inducible ZmDRO1e0
- Gene
- ZmDRO1e0
- Outcome
- grain yielde0
- Direction
- improvede0
- Value
- more than 40%e0
- Qualifier
- water‐limited conditionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ABA‐inducible ZmDRO1 promoted a larger downward root angle and improved grain yield by more than 40% under water‐limited conditions.”
t0“maize”
The same questions in other papers
(+)-abscisic acid · yield · Zea mays (maize)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
5 papers more in this group
See all 9 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.