Abstract
Abstract Microbial plant growth promoters (MPGP) are known to improve crop nutrition and root health. Here we examined the effects of individual and combined inoculation of chili pepper (variety Camino Real) with the known plant growth promoters Rhizophagus irregularis (isolate BEG87) and a commercial product of Azospirillum brasilense on chili pepper growth and biocontrol against the oomycete root pathogen Phytophthora capsici (isolate CH11). In a greenhouse pot experiment, unfertilized ten-week-old chili pepper plants with individual and combined inoculation of R. irregularis and A. brasilense were confronted with P. capsici, and four weeks later plants were harvested and scored for plant growth and disease severity. Surprisingly, both MPGP not only decreased plant growth, but also promoted root rot caused by P. capsici . This increased disease severity with P. capsici root rot in mycorrhizal chili pepper was further corroborated in a second greenhouse pot experiment with inert growth substrate and mineral fertilization. In conclusion, individual and combined inoculation with R. irregularis and A. brasilense may not only cause plant growth suppression in chili pepper plants, but also increase root rot caused by P. capsici.
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Claims 4
Claim · model-written summary
Rhizophagus irregularis inoculation decreased chili pepper growth.
- Material
- Camino Reale1
- Treatment
- inoculatione1
- Interactor
- Rhizophagus irregularis
Rhizophagus irregularise1symbiont - Outcome
- plant growthe0
- Direction
- decreasede0
CapsicumNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both MPGP not only decreased plant growth”
e1“individual and combined inoculation of chili pepper (variety Camino Real) with the known plant growth promoters Rhizophagus irregularis (isolate BEG87) and a commercial product of Azospirillum brasilense”
Claim · model-written summary
Azospirillum brasilense inoculation decreased chili pepper growth.
- Treatment
- inoculatione1
- Interactor
- Azospirillum brasilense
Azospirillum brasilensee1symbiont - Outcome
- plant growthe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“both MPGP not only decreased plant growth”
e1“individual and combined inoculation of chili pepper (variety Camino Real) with the known plant growth promoters Rhizophagus irregularis (isolate BEG87) and a commercial product of Azospirillum brasilense”
Claim · model-written summary
Both microbial promoters promoted Phytophthora root rot in chili pepper.
- Treatment
- inoculatione1
- Interactor
- P. capsici
.jpg?width=60)
Phytophthora capsicie0pathogen - Second interactor
- Rhizophagus irregularisRhizophagus irregularise1symbiont
- Outcome
- root rot caused by P. capsicie0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“both MPGP not only decreased plant growth, but also promoted root rot caused by P. capsici”
e1“individual and combined inoculation of chili pepper (variety Camino Real) with the known plant growth promoters Rhizophagus irregularis (isolate BEG87) and a commercial product of Azospirillum brasilense”
Claim · model-written summary
A second fertilized greenhouse experiment corroborated increased root rot in mycorrhizal chili pepper.
- Treatment
- mycorrhizale0
- Interactor
- P. capsiciPhytophthora capsicie0pathogen
- Outcome
- disease severity with P. capsici root rote0
- Direction
- increasede0
- Setting
- greenhouse pot experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased disease severity with P. capsici root rot in mycorrhizal chili pepper was further corroborated in a second greenhouse pot experiment with inert growth substrate and mineral fertilization”
The same questions in other papers
inoculation · Azospirillum brasilense · Capsicum (peppers)Positive and negative results
1 in the opposite direction
- positive
inoculation · Phytophthora capsici · Capsicum (peppers)Positive and negative results
2 papers in the same direction as this paper · 3 in the opposite direction
- positive
- positive
- positive
2 papers more in this group
See all 6 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.