Abstract
Introduction Native endophytic microorganisms in tobacco seeds are closely related to their resistance to Ralstonia solanacearum ( R. solanacearum ) infections. However, the role of the native seed core microbiome in the suppression of bacterial wilt disease (BWD) remains underexplored. Methods The characteristics of endophytic bacterial communities in both resistant and susceptible tobacco varieties were characterized using high-throughput sequencing technology. Results This study found Paenibacillus as a potential microbial antagonist against BWD based on its significantly greater presence in BWD-resistant tobacco varieties, with a relative abundance that was 83.10% greater in the seeds of resistant tobacco than in those of susceptible varieties. Furthermore, a Paenibacillus strain identified as Paenibacillus odorifer 6036-R2A-26 ( P. odorifer 26) was isolated from the seeds of the resistant variety. Following irrigation treatment with P. odorifer 26, the BWD index was reduced by 51.08%. Additionally, this strain exhibited significant growth-promoting effects on tobacco. It significantly increased the fresh weight of the tobacco plants by 30.26% in terms of aboveground weight, 37.75% in terms of underground weight, and 33.97% in terms of aboveground dry weight. This study highlights the critical role of Paenibacillus in tobacco seeds in the suppression of BWD, which may result from its antagonistic and growth-promoting properties. Discussion The results of this study revealed differences in the structural characteristics of endophytic bacterial communities between resistant and susceptible tobacco varieties, with groups such as Paenibacillus potentially playing significant roles in resisting BWD. These findings highlight the superiority of seed endophytic microorganisms. In the context of declining plant disease resistance and the spread of bacterial wilt, core endophytic microorganisms in seeds may emerge as a viable option for enhancing the productivity of agricultural ecosystems.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Paenibacillus had 83.10% greater relative abundance in seeds of resistant tobacco than in susceptible varieties.
- Taxon
- tobacco
Nicotiana tabacume0 - Interactor
- Paenibacillus
Paenibacilluse1biocontrol_agent - Outcome
- relative abundancee1
- Direction
- greatere1
- Value
- 83.10%e1
- Comparator
- susceptible varietiese1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Native endophytic microorganisms in tobacco seeds are closely related to their resistance to Ralstonia solanacearum ( R. solanacearum ) infections”
e1“Paenibacillus as a potential microbial antagonist against BWD based on its significantly greater presence in BWD-resistant tobacco varieties, with a relative abundance that was 83.10% greater in the seeds of resistant tobacco than in those of susceptible varieties”
Claim · model-written summary
Irrigation with P. odorifer 26 reduced the bacterial wilt disease index by 51.08% in tobacco.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- irrigation treatment with P. odorifer 26e2
- Interactor
- Ralstonia solanacearum
Ralstonia solanacearume0pathogen - Second interactor
- P. odorifer 26Paenibacillus odorifere2biocontrol_agent
- Outcome
- BWD indexe2
- Direction
- reducede2
- Value
- 51.08%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Native endophytic microorganisms in tobacco seeds are closely related to their resistance to Ralstonia solanacearum ( R. solanacearum ) infections”
e2“Following irrigation treatment with P. odorifer 26, the BWD index was reduced by 51.08%”
Claim · model-written summary
Irrigation with P. odorifer 26 increased tobacco aboveground fresh weight by 30.26%.
- Taxon
- tobaccoNicotiana tabacume3
- Treatment
- irrigation treatment with P. odorifer 26e2
- Interactor
- P. odorifer 26Paenibacillus odorifere2symbiont
- Outcome
- aboveground weighte3
- Direction
- increasede3
- Value
- 30.26%e3
- Qualifier
- fresh weighte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Following irrigation treatment with P. odorifer 26, the BWD index was reduced by 51.08%”
e3“It significantly increased the fresh weight of the tobacco plants by 30.26% in terms of aboveground weight, 37.75% in terms of underground weight, and 33.97% in terms of aboveground dry weight”
Claim · model-written summary
Irrigation with P. odorifer 26 increased tobacco underground fresh weight by 37.75%.
- Taxon
- tobaccoNicotiana tabacume3
- Treatment
- irrigation treatment with P. odorifer 26e2
- Interactor
- P. odorifer 26Paenibacillus odorifere2symbiont
- Outcome
- underground weighte3
- Direction
- increasede3
- Value
- 37.75%e3
- Qualifier
- fresh weighte3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Following irrigation treatment with P. odorifer 26, the BWD index was reduced by 51.08%”
e3“It significantly increased the fresh weight of the tobacco plants by 30.26% in terms of aboveground weight, 37.75% in terms of underground weight, and 33.97% in terms of aboveground dry weight”
Claim · model-written summary
Irrigation with P. odorifer 26 increased tobacco aboveground dry weight by 33.97%.
- Taxon
- tobaccoNicotiana tabacume3
- Treatment
- irrigation treatment with P. odorifer 26e2
- Interactor
- P. odorifer 26Paenibacillus odorifere2symbiont
- Outcome
- aboveground dry weighte3
- Direction
- increasede3
- Value
- 33.97%e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Following irrigation treatment with P. odorifer 26, the BWD index was reduced by 51.08%”
e3“It significantly increased the fresh weight of the tobacco plants by 30.26% in terms of aboveground weight, 37.75% in terms of underground weight, and 33.97% in terms of aboveground dry weight”
Claim · model-written summary
Core endophytic microorganisms in seeds may enhance the productivity of agricultural ecosystems.
- Taxon
- tobaccoNicotiana tabacume0
- Treatment
- core endophytic microorganisms in seedse5
- Outcome
- productivity of agricultural ecosystemse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Native endophytic microorganisms in tobacco seeds are closely related to their resistance to Ralstonia solanacearum ( R. solanacearum ) infections”
e5“core endophytic microorganisms in seeds may emerge as a viable option for enhancing the productivity of agricultural ecosystems”
The same questions in other papers
irrigation · growth · Nicotiana tabacum (tobacco)Positive and negative results
15 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- no effect
- negative
17 papers more in this group
See all 21 papers →irrigation · Ralstonia solanacearum · Nicotiana tabacum (tobacco)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.