Abstract
Continuous-cropping (CC) obstacles are among the primary factors limiting the development of global agriculture. Although most plants are negatively affected by barriers that develop with CC, they may also overcome such obstacles by altering the soil biological and chemical environment to favor plant growth. In this study, we investigated the mechanism by which plants recruit beneficial microorganisms using root exudates to alleviate obstacles in a 10-year CC potato system. On day 20 after potato emergence, soil microorganisms in the CC system promoted an increase in adventitious root (AR) numbers by increasing the indole-3-acetic acid (IAA) content of the rhizosphere soil. Analysis of rhizosphere bacterial communities using 16S rRNA sequencing revealed that CC alters community structure, increasing the abundance of Pantoea sp. MCC16. Irrigation with root exudates from CC potato significantly increased AR numbers and Pantoea sp. MCC16 abundance. Through untargeted metabolomic analysis, we identified nobiletin as key metabolite that promotes Pantoea sp. MCC16 colonization in the rhizosphere. Furthermore, application of either nobiletin or Pantoea sp. MCC16 significantly improved the yield of CC potatoes. These findings demonstrate that CC plants can actively secrete the unique metabolite nobiletin to recruit Pantoea sp. MCC16, a high IAA producer, to help plants recover functional traits and mitigate CC obstacles.
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 8
Claim · model-written summary
Soil microbes in the continuous-cropping system increased potato adventitious root number through rhizosphere IAA.
- Taxon
- potato
Solanum tuberosume0 - Interactor
- soil microorganismse0symbiont
- Compound
- indole-3-acetic acid (IAA)e0
- Outcome
- adventitious root (AR) numberse0
- Qualifier
- On day 20 after potato emergencee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“On day 20 after potato emergence, soil microorganisms in the CC system promoted an increase in adventitious root (AR) numbers by increasing the indole-3-acetic acid (IAA) content of the rhizosphere soil”
Claim · model-written summary
Continuous cropping altered the potato rhizosphere community and increased Pantoea sp. MCC16 abundance.
- Taxon
- potatoSolanum tuberosume1
- Interactor
- Pantoea sp. MCC16e0symbiont
- Outcome
- community structuree0
- Direction
- alterse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CC alters community structure, increasing the abundance of Pantoea sp. MCC16”
e1“10-year CC potato system”
Claim · model-written summary
Irrigation with exudates from continuously cropped potato significantly increased adventitious root numbers.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Irrigation with root exudates from CC potatoe0
- Outcome
- AR numberse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation with root exudates from CC potato significantly increased AR numbers and Pantoea sp. MCC16 abundance”
Claim · model-written summary
Irrigation with exudates from continuously cropped potato significantly increased Pantoea sp. MCC16 abundance.
- Taxon
- potatoSolanum tuberosume0
- Treatment
- Irrigation with root exudates from CC potatoe0
- Interactor
- Pantoea sp. MCC16e0symbiont
- Outcome
- Pantoea sp. MCC16 abundancee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation with root exudates from CC potato significantly increased AR numbers and Pantoea sp. MCC16 abundance”
Claim · model-written summary
Nobiletin promoted Pantoea sp. MCC16 colonization in the potato rhizosphere.
- Taxon
- potatoSolanum tuberosume1
- Interactor
- Pantoea sp. MCC16e0symbiont
- Compound
- nobiletine0
- Outcome
- Pantoea sp. MCC16 colonizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“we identified nobiletin as key metabolite that promotes Pantoea sp. MCC16 colonization in the rhizosphere”
e1“10-year CC potato system”
Claim · model-written summary
Applied nobiletin significantly increased yield of continuously cropped potatoes.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- nobiletine0
- Outcome
- yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of either nobiletin or Pantoea sp. MCC16 significantly improved the yield of CC potatoes”
Claim · model-written summary
Applied Pantoea sp. MCC16 significantly increased yield of continuously cropped potatoes.
- Taxon
- potatoesSolanum tuberosume0
- Treatment
- Pantoea sp. MCC16e0
- Interactor
- Pantoea sp. MCC16e0symbiont
- Outcome
- yielde0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“application of either nobiletin or Pantoea sp. MCC16 significantly improved the yield of CC potatoes”
Claim · model-written summary
The authors concluded that potato secretes nobiletin to recruit IAA-producing Pantoea and mitigate continuous-cropping obstacles.
- Taxon
- potatoSolanum tuberosume1
- Interactor
- Pantoea sp. MCC16e0symbiont
- Compound
- nobiletine0
- Outcome
- recover functional traits and mitigate CC obstaclese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CC plants can actively secrete the unique metabolite nobiletin to recruit Pantoea sp. MCC16, a high IAA producer, to help plants recover functional traits and mitigate CC obstacles”
e1“10-year CC potato system”
The same questions in other papers
allelopathy · growth · Solanum tuberosum (potato)Positive and negative results
1 in the opposite direction
- no effect
rotation · growth · Solanum tuberosum (potato)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
rotation · pest · Solanum tuberosum (potato)Positive and negative results
5 in the opposite direction
- negative
- negative
- no effect
2 papers more in this group
See all 6 papers →irrigation · pest · Solanum tuberosum (potato)Positive and negative results
4 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- no effect
4 papers more in this group
See all 8 papers →irrigation · growth · Solanum tuberosum (potato)Positive and negative results
20 papers in the same direction as this paper · 11 in the opposite direction · 2 reporting no difference from an alternative
- negative
- negative
- no effect
30 papers more in this group
See all 34 papers →allelopathy · pest · Solanum tuberosum (potato)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.