Abstract
L.) plants grown at three levels of irrigation (80% of water holding capacity (WHC) - well-watered, 60% of WHC - moderate water deficit stress, and 40% of WHC - severe water deficit stress) in a greenhouse experiment. The impact of water deficit and bioinoculants on soil microbial activity (fluorescein diacetate hydrolysis) was also evaluated. Moderate and severe water deficit negatively affected soil microbial activity, as well as, maize growth, by reducing plants' shoot biomass and increasing root/shoot ratio at 60 and 40% of WHC. Bioinoculants mitigated the negative effects on shoot biomass, especially when PGPR were co-inoculated, increasing up to 89% the aerial biomass of plants exposed to moderate water deficit. Bioinoculation also increased nitrogen (N) and phosphorous (P) use efficiency, which may have led to higher maize growth under water deficit conditions. The size of the inocula applied had marginal influence on biometric and nutrient parameters, although the higher concentration of the mixture of PGPR was the most effective in improving shoot biomass under moderate water deficit. This study shows that rhizobacterial strains are able to increase nutrient use efficiency and to alleviate water stress effects in crops with high water demands and have potential applications to keep up with productivity in water stress scenarios.
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Claims 9
Claim · model-written summary
Moderate and severe water deficit reduced maize shoot biomass at 60 and 40% WHC.
- Treatment
- Moderate and severe water deficite0
- Outcome
- plants' shoot biomasse0
- Direction
- reducinge0
- Qualifier
- 60 and 40% of WHCe0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate and severe water deficit negatively affected soil microbial activity, as well as, maize growth, by reducing plants' shoot biomass and increasing root/shoot ratio at 60 and 40% of WHC.”
Claim · model-written summary
Moderate and severe water deficit increased maize root to shoot ratio.
- Treatment
- Moderate and severe water deficite0
- Outcome
- root/shoot ratioe0
- Direction
- increasinge0
- Qualifier
- 60 and 40% of WHCe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate and severe water deficit negatively affected soil microbial activity, as well as, maize growth, by reducing plants' shoot biomass and increasing root/shoot ratio at 60 and 40% of WHC.”
Claim · model-written summary
Moderate and severe water deficit negatively affected soil microbial activity.
- Treatment
- Moderate and severe water deficite0
- Outcome
- soil microbial activitye0
- Direction
- negatively affectede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Moderate and severe water deficit negatively affected soil microbial activity, as well as, maize growth, by reducing plants' shoot biomass and increasing root/shoot ratio at 60 and 40% of WHC.”
Claim · model-written summary
Bioinoculants mitigated maize shoot biomass losses under water deficit.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bioinoculants mitigated the negative effects on shoot biomass, especially when PGPR were co-inoculated, increasing up to 89% the aerial biomass of plants exposed to moderate water deficit.”
t0“maize (Zea mays L.)”
Claim · model-written summary
Co-inoculated PGPR increased maize aerial biomass by up to 89% under moderate water deficit.
- Treatment
- PGPR were co-inoculatede0
- Interactor
- PGPRe0symbiont
- Outcome
- aerial biomasse0
- Direction
- increasinge0
- Value
- up to 89%e0
- Qualifier
- moderate water deficite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bioinoculants mitigated the negative effects on shoot biomass, especially when PGPR were co-inoculated, increasing up to 89% the aerial biomass of plants exposed to moderate water deficit.”
t0“maize (Zea mays L.)”
Claim · model-written summary
Bioinoculation increased maize nitrogen use efficiency under water deficit.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bioinoculation also increased nitrogen (N) and phosphorous (P) use efficiency, which may have led to higher maize growth under water deficit conditions.”
Claim · model-written summary
Bioinoculation increased maize phosphorous use efficiency under water deficit.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bioinoculation also increased nitrogen (N) and phosphorous (P) use efficiency, which may have led to higher maize growth under water deficit conditions.”
Claim · model-written summary
Inoculum size had marginal influence on maize biometric and nutrient parameters.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The size of the inocula applied had marginal influence on biometric and nutrient parameters, although the higher concentration of the mixture of PGPR was the most effective in improving shoot biomass under moderate water deficit.”
t0“maize (Zea mays L.)”
Claim · model-written summary
The higher concentration of the PGPR mixture was most effective for maize shoot biomass under moderate water deficit.
- Treatment
- higher concentration of the mixture of PGPRe0
- Interactor
- PGPRe0symbiont
- Outcome
- shoot biomasse0
- Direction
- improvinge0
- Qualifier
- moderate water deficite0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The size of the inocula applied had marginal influence on biometric and nutrient parameters, although the higher concentration of the mixture of PGPR was the most effective in improving shoot biomass under moderate water deficit.”
t0“maize (Zea mays L.)”
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