Abstract
The presence of endophytic fungi in the second leaf below the shoot apex from field-grown barley was investigated after surface sterilizing the leaves. Half of the eight experimental plots were sprayed with the systemic fungicide propiconazolc and changes in the fungal population recorded. Green leaf area and yield parameters were measured to draw conclusions about the significance of endophytic fungi on grain yield. Alternaria spp. (55% of all isolates) and Didymella phleina (20%) were isolated most frequently while Stemphylium botryosum, Epicoccum purpurascens and Cladosporium spp. were often abundant. In propiconazole-treated plots significantly fewer isolates of D. phleina, Alternaria and Cladosporium were obtained, the decline of green leaf area was retarded and grain yield was higher. There was no evidence that one of the frequently found saprobes had accelerated senescence. Therefore, the control of D. phleina or cytokinin-like properties of propiconazole equally may have contributed to a yield increase in sprayed plots. The persistence of endophytic fungi in barley leaves seemed to be low and most dependent on climatic conditions and the presence of external inoculum.
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Claims 9
Claim · model-written summary
Alternaria spp. were the most frequently isolated endophytic fungi from barley leaves, at 55% of all isolates.
- Taxon
- barley
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Hordeum vulgaree0 - Interactor
- Alternaria spp.
Alternariae1symbiont - Outcome
- isolated most frequentlye1
- Value
- 55% of all isolatese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“field-grown barley”
e1“Alternaria spp. (55% of all isolates) and Didymella phleina (20%) were isolated most frequently”
Claim · model-written summary
Didymella phleina was isolated from barley leaves at 20% of isolates, among the most frequent isolates.
- Taxon
- barleyHordeum vulgaree0
- Interactor
- Didymella phleinaDidymella phleinae1other
- Outcome
- isolated most frequentlye1
- Value
- 20%e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown barley”
e1“Alternaria spp. (55% of all isolates) and Didymella phleina (20%) were isolated most frequently”
Claim · model-written summary
Stemphylium botryosum and Epicoccum purpurascens were often abundant in barley leaves, as was Cladosporium.
- Taxon
- barleyHordeum vulgaree0
- Interactor
- Stemphylium botryosum
Stemphylium botryosume2symbiont - Second interactor
- Epicoccum purpurascens
Epicoccum nigrume2symbiont - Outcome
- often abundante2
- Qualifier
- Cladosporium spp.e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“field-grown barley”
e2“Stemphylium botryosum, Epicoccum purpurascens and Cladosporium spp. were often abundant”
Claim · model-written summary
Propiconazole significantly reduced the isolates of D. phleina, Alternaria and Cladosporium from barley leaves.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- propiconazolee3
- Interactor
- D. phleinaDidymella phleinae3other
- Outcome
- isolates of D. phleina, Alternaria and Cladosporiume3
- Direction
- fewere3
- Qualifier
- Alternaria and Cladosporiume3
- Comparator
- Untreatedt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Propiconazole-Treated and Untreated Barley Leaves”
e3“In propiconazole-treated plots significantly fewer isolates of D. phleina, Alternaria and Cladosporium were obtained, the decline of green leaf area was retarded and grain yield was higher”
Claim · model-written summary
Propiconazole retarded the decline of green leaf area in barley.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- propiconazolee3
- Outcome
- decline of green leaf areae3
- Direction
- retardede3
- Comparator
- Untreatedt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Propiconazole-Treated and Untreated Barley Leaves”
e3“In propiconazole-treated plots significantly fewer isolates of D. phleina, Alternaria and Cladosporium were obtained, the decline of green leaf area was retarded and grain yield was higher”
Claim · model-written summary
Propiconazole spraying gave higher grain yield in barley.
- Taxon
- barleyHordeum vulgaret0
- Treatment
- propiconazolee3
- Outcome
- grain yielde3
- Direction
- highere3
- Comparator
- Untreatedt0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Propiconazole-Treated and Untreated Barley Leaves”
e3“In propiconazole-treated plots significantly fewer isolates of D. phleina, Alternaria and Cladosporium were obtained, the decline of green leaf area was retarded and grain yield was higher”
Claim · model-written summary
There was no evidence that a frequently found saprobe accelerated barley leaf senescence.
- Taxon
- barleyHordeum vulgaret0
- Interactor
- saprobese5other
- Outcome
- accelerated senescencee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Propiconazole-Treated and Untreated Barley Leaves”
e5“There was no evidence that one of the frequently found saprobes had accelerated senescence”
Claim · model-written summary
Control of D. phleina or cytokinin-like properties of propiconazole may have contributed to a yield increase in sprayed barley plots.
- Taxon
- barleyHordeum vulgaret0
- Outcome
- yield increasee6
- Qualifier
- the control of D. phleina or cytokinin-like properties of propiconazolee6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Propiconazole-Treated and Untreated Barley Leaves”
e6“the control of D. phleina or cytokinin-like properties of propiconazole equally may have contributed to a yield increase in sprayed plots”
Claim · model-written summary
The persistence of endophytic fungi in barley leaves seemed low and depended on climatic conditions and external inoculum.
- Taxon
- barleyHordeum vulgaree7
- Outcome
- persistence of endophytic fungie7
- Direction
- lowe7
- Qualifier
- most dependent on climatic conditions and the presence of external inoculume7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“The persistence of endophytic fungi in barley leaves seemed to be low and most dependent on climatic conditions and the presence of external inoculum”
The same questions in other papers
propiconazole · yield · Hordeum vulgare (barley)Positive and negative results
9 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- positive
7 papers more in this group
See all 11 papers →propiconazole · growth · Hordeum vulgare (barley)Results agree
1 paper in the same direction as this paper
- positive
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.