Abstract
Stalk-lodging and drought are major constraints limiting maize productivity. We previously characterized B73 as stalk-lodging resistant but drought-sensitive maize inbred, while EA2024 is stalk-lodging susceptible and drought-tolerant. Using these inbreds, we performed a comparative proteomic analysis under well-watered and drought conditions. Our results revealed that drought induces extensive proteomic reprogramming in B73, while the EA2024 proteome remains unaltered. Comparative analyses identified 481 differentially accumulated proteins between inbreds across conditions. Among them, 100 proteins were differentially accumulated in well-watered conditions but showed no significant (or attenuated) differences upon drought. We defined these B73 proteins as having a convergent response to drought. Their functional characterization revealed that one third relates to upstream elements of the photosynthetic machinery, suggesting that B73 reprograms its energetic machinery to achieve an organization similar to EA2024. We also identified 381 proteins differentially accumulated between inbreds upon drought, defined as having a divergent response to drought. In this case, B73 over-accumulates proteins mainly involved in cofactors, vitamins metabolism and signaling and under-accumulates proteins linked to downstream photosynthetic components and biosynthetic processes. Thus, the convergent response suggests a partial shift of drought sensitive B73 toward the baseline of drought resistant EA2024. However, the broader divergent response of B73 suggests an inbred-specific metabolic reprogramming associated with reduced energy production, metabolic impairment and altered signaling cascades. Our findings open the possibility that stalk-lodging resistance in B73 was acquired at the expense of drought tolerance, prompting further investigation into the correlation between these two traits across a broader range of maize inbreds.
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Claims 11
Claim · model-written summary
Drought caused extensive proteomic reprogramming in B73.
Zea maysNot reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought induces extensive proteomic reprogramming in B73”
t0“maize”
Claim · model-written summary
EA2024 proteome was unaltered under drought.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the EA2024 proteome remains unaltered”
e1“drought induces extensive proteomic reprogramming in B73”
t0“maize”
Claim · model-written summary
There were 481 differentially accumulated proteins between inbreds across conditions.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“481 differentially accumulated proteins between inbreds across conditions.”
t0“maize”
Claim · model-written summary
One hundred proteins differed under well-watered conditions but converged under drought.
- Outcome
- proteins were differentially accumulatede0
- Value
- 100 proteinse0
- Qualifier
- well-watered conditions but showed no significant (or attenuated) differences upon droughte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“100 proteins were differentially accumulated in well-watered conditions but showed no significant (or attenuated) differences upon drought.”
t0“maize”
Claim · model-written summary
A third of convergent B73 proteins related to upstream photosynthesis machinery.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“one third relates to upstream elements of the photosynthetic machinery”
e1“these B73 proteins as having a convergent response to drought”
t0“maize”
Claim · model-written summary
There were 381 differentially accumulated proteins between inbreds under drought.
- Outcome
- proteins differentially accumulatede0
- Value
- 381 proteinse0
- Qualifier
- upon droughte0
- Comparator
- inbredse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“381 proteins differentially accumulated between inbreds upon drought”
t0“maize”
Claim · model-written summary
B73 over-accumulated proteins for cofactors, vitamin metabolism and signaling under drought.
- Material
- B73e0
- Outcome
- proteins mainly involved in cofactors, vitamins metabolism and signalinge0
- Direction
- over-accumulatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“B73 over-accumulates proteins mainly involved in cofactors, vitamins metabolism and signaling”
t0“maize”
Claim · model-written summary
B73 under-accumulated proteins linked to downstream photosynthesis and biosynthesis.
- Material
- B73e1
- Outcome
- proteins linked to downstream photosynthetic components and biosynthetic processese0
- Direction
- under-accumulatese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“under-accumulates proteins linked to downstream photosynthetic components and biosynthetic processes”
e1“B73 over-accumulates proteins mainly involved in cofactors, vitamins metabolism and signaling”
t0“maize”
Claim · model-written summary
Authors interpret the convergent response as a partial B73 shift toward EA2024 baseline.
- Material
- B73e0
- Outcome
- partial shift of drought sensitive B73 toward the baseline of drought resistant EA2024e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the convergent response suggests a partial shift of drought sensitive B73 toward the baseline of drought resistant EA2024”
t0“maize”
Claim · model-written summary
Authors associate divergent B73 response with impaired energy, metabolism and signaling.
- Material
- B73e0
- Outcome
- reduced energy production, metabolic impairment and altered signaling cascadese0
- Direction
- reducede0
- Qualifier
- inbred-specific metabolic reprogramminge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the broader divergent response of B73 suggests an inbred-specific metabolic reprogramming associated with reduced energy production, metabolic impairment and altered signaling cascades.”
t0“maize”
Claim · model-written summary
Authors hypothesize that B73 stalk-lodging resistance may trade off with drought tolerance.
- Material
- B73e0
- Outcome
- drought tolerancee0
- Direction
- at the expense ofe0
- Comparator
- stalk-lodging resistancee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“stalk-lodging resistance in B73 was acquired at the expense of drought tolerance”
t0“maize”
The same questions in other papers
drought · molecular: expression · Zea mays (maize)Positive and negative results
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