Abstract
Environmental stresses are limiting factors in optimal agricultural crop yield, and these stresses, especially drought, are likely to become more acute due to future climate change. Crop wild relatives contain environmentally selected endophytes that can help to increase stress resistance. Our previous work with barley cultivars has shown a positive correlation between endophyte-induced yield increase and increasingly dry conditions. For this study, we hypothesised that a consortium of fungal endophytes recovered from a crop wild relative of barley growing in drought-stressed sites would enhance barley yield in similarly low moisture agricultural sites. We grew three barley cultivars on two environmentally distinct sites under three nitrogen (N) input regimes. We found that the endophyte inoculant induced an increase in grain dry weight at both sites, which experienced abnormally low local rainfall in the early growing season. The yield increase was 1.2 t/ha for standard N input, 1.1 t/ha for half N input and 0.6 t/ha with no N input. Additionally, on both sites, endophyte treatment with half N input recovered yield to that associated with untreated crops with standard N input for all three cultivars. Furthermore, the endophytes still retained their efficacy with regular foliar fungicidal crop treatments. These results show that endophytes recovered from sites with low and similar water status to the targeted barley growing sites can produce large and significant increases in yield regardless of nitrogen input, and hold promise for application in drought-stressed sites with limited access to expensive nitrogen fertilisers.
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Claims 5
Claim · model-written summary
Endophytes increased barley yield by 1.2 t/ha at standard nitrogen input.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaret0 - Treatment
- endophyte inoculantt1
- Interactor
- fungal endophyte consortiume1symbiont
- Outcome
- grain dry weighte2
- Direction
- increasee0
- Value
- 1.2 t/hae0
- Qualifier
- standard N inpute0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“The yield increase was 1.2 t/ha for standard N input, 1.1 t/ha for half N input and 0.6 t/ha with no N input”
e1“fungal endophyte consortium”
e2“increase in grain dry weight”
t0“barley”
t1“endophyte inoculant”
Claim · model-written summary
Endophytes increased barley yield by 1.1 t/ha at half nitrogen input.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- endophyte inoculantt1
- Interactor
- fungal endophyte consortiume1symbiont
- Outcome
- grain dry weighte2
- Direction
- increasee0
- Value
- 1.1 t/hae0
- Qualifier
- half N inpute0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield increase was 1.2 t/ha for standard N input, 1.1 t/ha for half N input and 0.6 t/ha with no N input”
e1“fungal endophyte consortium”
e2“increase in grain dry weight”
t0“barley”
t1“endophyte inoculant”
Claim · model-written summary
Endophytes increased barley yield by 0.6 t/ha without nitrogen input.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- endophyte inoculantt1
- Interactor
- fungal endophyte consortiume1symbiont
- Outcome
- grain dry weighte2
- Direction
- increasee0
- Value
- 0.6 t/hae0
- Qualifier
- no N inpute0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield increase was 1.2 t/ha for standard N input, 1.1 t/ha for half N input and 0.6 t/ha with no N input”
e1“fungal endophyte consortium”
e2“increase in grain dry weight”
t0“barley”
t1“endophyte inoculant”
Claim · model-written summary
Endophytes with half nitrogen restored yield to the untreated standard nitrogen level.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- endophyte treatment with half N inpute0
- Interactor
- fungal endophyte consortiume1symbiont
- Outcome
- yielde0
- Direction
- recoverede0
- Comparator
- untreated crops with standard N inpute0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endophyte treatment with half N input recovered yield to that associated with untreated crops with standard N input for all three cultivars”
e1“fungal endophyte consortium”
t0“barley”
Claim · model-written summary
Endophytes remained effective with foliar fungicide treatment.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- regular foliar fungicidal crop treatmentse0
- Interactor
- endophytese0symbiont
- Outcome
- retained their efficacye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the endophytes still retained their efficacy with regular foliar fungicidal crop treatments”
t0“barley”
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See all 299 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.