Abstract
Endophytes live inside plants and are often beneficial. Kosakonia is a novel bacterial genus that includes many diazotrophic plant-associated isolates. Plant–bacteria studies on two rice endophytic Kosakonia beneficial strains were performed, including comparative genomics, secretome profiling, in planta tests, and a field release trial. The strains are efficient rhizoplane and root endosphere colonizers and localized in the root cortex. Secretomics revealed 144 putative secreted proteins, including type VI secretory system (T6SS) proteins. A Kosakonia T6SS genomic knock-out mutant showed a significant decrease in rhizoplane and endosphere colonization ability. A field trial using rice seed inoculated with Kosakonia spp. showed no effect on plant growth promotion upon nitrogen stress and microbiome studies revealed that Kosakonia spp. were significantly more present in the inoculated rice. Comparative genomics indicated that several protein domains were enriched in plant-associated Kosakonia spp. This study highlights that Kosakonia is an important, recently classified genus involved in plant–bacteria interaction.
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Claims 4
Claim · model-written summary
The two rice Kosakonia strains were localized in the root cortex.
- Taxon
- Rice
Oryza sativat0 - Organ / stage
- root cortexe0
- Interactor
- strainse0symbiont
- Outcome
- localized in the root cortexe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The strains are efficient rhizoplane and root endosphere colonizers and localized in the root cortex”
t0“Rice”
Claim · model-written summary
Secretomics of the Kosakonia strains revealed 144 putative secreted proteins, including type VI secretory system proteins.
- Taxon
- RiceOryza sativat0
- Gene
- type VI secretory system (T6SS) proteinse0
- Outcome
- putative secreted proteinse0
- Value
- 144e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Secretomics revealed 144 putative secreted proteins, including type VI secretory system (T6SS) proteins”
t0“Rice”
Claim · model-written summary
A Kosakonia T6SS genomic knock-out mutant showed a significant decrease in rhizoplane and endosphere colonization ability in rice.
- Taxon
- RiceOryza sativat0
- Treatment
- T6SS genomic knock-out mutante0
- Gene
- T6SSe0
- Outcome
- rhizoplane and endosphere colonization abilitye0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A Kosakonia T6SS genomic knock-out mutant showed a significant decrease in rhizoplane and endosphere colonization ability”
t0“Rice”
Claim · model-written summary
In a field trial, rice seed inoculated with Kosakonia spp. showed no effect on plant growth promotion under nitrogen stress.
- Taxon
- RiceOryza sativat0
- Treatment
- rice seed inoculated with Kosakonia spp.e0
- Outcome
- plant growth promotione0
- Direction
- no effecte0
- Qualifier
- upon nitrogen stresse0
- Setting
- field triale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A field trial using rice seed inoculated with Kosakonia spp. showed no effect on plant growth promotion upon nitrogen stress”
t0“Rice”
The same questions in other papers
inoculation · growth · Oryza sativa (rice)Positive and negative results
36 papers in the same direction as this paper · 362 in the opposite direction
- positive
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