Abstract
Unlike that of other crops, the growth of tea plants can be promoted by aluminum, but its regulation mechanism remains unclear. Some endophytes can also promote growth of plant hosts. In this paper, tea roots treated with aluminum were used to study the growth-promoting traits and aluminum tolerance of endophytes. Meta-16S rDNA analysis revealed that Burkholderia was enriched in tea roots after aluminum treatment, and it was the dominant strain for hydroponic tea roots and field tea roots. Actinomycetes constituted the dominant strains in hydroponic tea seedlings treated with aluminum. Sixteen endophytic bacteria, including 12 strains of Firmicutes, 2 strains of Proteobacteria and 2 strains of Actinomycetes, were isolated and identified from hydroponic tea roots treated with different aluminum concentrations. Growth-promoting activity analysis showed that the isolated endophytic bacteria all had more than one plant growth-promoting trait. Among them, B4 (Bacillus nealsonii), B8 (Brevibacterium frigoritolerans) and A2 (Nocardia nova) bacteria each had three growth-promoting traits. Aluminum tolerance ability analysis indicated that endophyte A1 (Leifsonia shinshuensis) had the strongest aluminum tolerance ability, up to 200 mg l-1 aluminum. Plant-bacteria interactions showed that endophytes A1, A2 and B4 and their synthetic community all had a growth-promoting effect on the growth of wheat lateral roots. Moreover, endophytes A1 and B4 alleviated aluminum stress in wheat. Endophyte A1 also promoted the growth of tea cuttings, especially lateral roots, with/without aluminum. Taken together, aluminum enhanced the distribution of aluminum-tolerant and growth-promoting bacteria, thereby promoting the growth of tea roots. This study provides a new aspect for research on the mechanism by which aluminum promotes tea plant growth.
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Claims 18
Claim · model-written summary
Burkholderia was enriched in tea roots after aluminum treatment
- Taxon
- teae0
- Treatment
- aluminum treatmente0
- Interactor
- Burkholderia
Burkholderiae0symbiont - Outcome
- Burkholderia was enrichede0
- Direction
- enrichede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Burkholderia was enriched in tea roots after aluminum treatment”
Claim · model-written summary
Burkholderia was enriched in tea roots after aluminum treatment, and it was the dominant strain for hydroponic tea roots and field tea roots
- Taxon
- teat0
- Organ / stage
- tea rootse0
- Interactor
- BurkholderiaBurkholderiae0symbiont
- Outcome
- dominant straine0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Burkholderia was enriched in tea roots after aluminum treatment, and it was the dominant strain for hydroponic tea roots and field tea roots”
t0“tea plant”
Claim · model-written summary
Actinomycetes constituted the dominant strains in hydroponic tea seedlings treated with aluminum
Verbatim
e0“Actinomycetes constituted the dominant strains in hydroponic tea seedlings treated with aluminum”
Claim · model-written summary
Sixteen endophytic bacteria, including 12 strains of Firmicutes, 2 strains of Proteobacteria and 2 strains of Actinomycetes, were isolated and identified from hydroponic tea roots treated with different aluminum concentrations
Verbatim
e0“Sixteen endophytic bacteria, including 12 strains of Firmicutes, 2 strains of Proteobacteria and 2 strains of Actinomycetes, were isolated and identified from hydroponic tea roots treated with different aluminum concentrations”
Claim · model-written summary
the isolated endophytic bacteria all had more than one plant growth-promoting trait
Verbatim
e0“the isolated endophytic bacteria all had more than one plant growth-promoting trait”
t0“tea plant”
Claim · model-written summary
B4 (Bacillus nealsonii), B8 (Brevibacterium frigoritolerans) and A2 (Nocardia nova) bacteria each had three growth-promoting traits
- Taxon
- teat0
- Interactor
- Bacillus nealsoniiNiallia nealsoniie0symbiont
- Outcome
- growth-promoting traitse0
- Value
- threee0
Verbatim
e0“B4 (Bacillus nealsonii), B8 (Brevibacterium frigoritolerans) and A2 (Nocardia nova) bacteria each had three growth-promoting traits”
t0“tea plant”
Claim · model-written summary
B4 (Bacillus nealsonii), B8 (Brevibacterium frigoritolerans) and A2 (Nocardia nova) bacteria each had three growth-promoting traits
- Taxon
- teat0
- Interactor
- Brevibacterium frigoritoleransPeribacillus frigoritoleranse0symbiont
- Outcome
- growth-promoting traitse0
- Value
- threee0
Verbatim
e0“B4 (Bacillus nealsonii), B8 (Brevibacterium frigoritolerans) and A2 (Nocardia nova) bacteria each had three growth-promoting traits”
t0“tea plant”
Claim · model-written summary
B4 (Bacillus nealsonii), B8 (Brevibacterium frigoritolerans) and A2 (Nocardia nova) bacteria each had three growth-promoting traits
- Taxon
- teat0
- Interactor
- Nocardia novaNocardia novae0symbiont
- Outcome
- growth-promoting traitse0
- Value
- threee0
Verbatim
e0“B4 (Bacillus nealsonii), B8 (Brevibacterium frigoritolerans) and A2 (Nocardia nova) bacteria each had three growth-promoting traits”
t0“tea plant”
Claim · model-written summary
endophyte A1 (Leifsonia shinshuensis) had the strongest aluminum tolerance ability, up to 200 mg l-1 aluminum
Verbatim
e0“endophyte A1 (Leifsonia shinshuensis) had the strongest aluminum tolerance ability, up to 200 mg l-1 aluminum”
t0“tea plant”
Claim · model-written summary
endophytes A1, A2 and B4 and their synthetic community all had a growth-promoting effect on the growth of wheat lateral roots
- Taxon
- wheat
Triticum aestivume0 - Organ / stage
- lateral rootse0
- Treatment
- endophytes A1e0
- Interactor
- A1e0symbiont
- Outcome
- growth of wheat lateral rootse0
- Direction
- growth-promotinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endophytes A1, A2 and B4 and their synthetic community all had a growth-promoting effect on the growth of wheat lateral roots”
Claim · model-written summary
endophytes A1, A2 and B4 and their synthetic community all had a growth-promoting effect on the growth of wheat lateral roots
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- lateral rootse0
- Treatment
- A2e0
- Interactor
- A2e0symbiont
- Outcome
- growth of wheat lateral rootse0
- Direction
- growth-promotinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endophytes A1, A2 and B4 and their synthetic community all had a growth-promoting effect on the growth of wheat lateral roots”
Claim · model-written summary
endophytes A1, A2 and B4 and their synthetic community all had a growth-promoting effect on the growth of wheat lateral roots
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- lateral rootse0
- Treatment
- B4e0
- Interactor
- B4e0symbiont
- Outcome
- growth of wheat lateral rootse0
- Direction
- growth-promotinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endophytes A1, A2 and B4 and their synthetic community all had a growth-promoting effect on the growth of wheat lateral roots”
Claim · model-written summary
endophytes A1, A2 and B4 and their synthetic community all had a growth-promoting effect on the growth of wheat lateral roots
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- lateral rootse0
- Treatment
- their synthetic communitye0
- Outcome
- growth of wheat lateral rootse0
- Direction
- growth-promotinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endophytes A1, A2 and B4 and their synthetic community all had a growth-promoting effect on the growth of wheat lateral roots”
Claim · model-written summary
endophytes A1 and B4 alleviated aluminum stress in wheat
- Taxon
- wheatTriticum aestivume0
- Treatment
- endophytes A1e0
- Interactor
- A1e0symbiont
- Outcome
- aluminum stress in wheate0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endophytes A1 and B4 alleviated aluminum stress in wheat”
Claim · model-written summary
endophytes A1 and B4 alleviated aluminum stress in wheat
- Taxon
- wheatTriticum aestivume0
- Treatment
- B4e0
- Interactor
- B4e0symbiont
- Outcome
- aluminum stress in wheate0
- Direction
- alleviatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endophytes A1 and B4 alleviated aluminum stress in wheat”
Claim · model-written summary
Endophyte A1 also promoted the growth of tea cuttings, especially lateral roots, with/without aluminum
- Taxon
- teae0
- Organ / stage
- lateral rootse0
- Treatment
- Endophyte A1e0
- Interactor
- A1e0symbiont
- Outcome
- growth of tea cuttingse0
- Direction
- promotede0
- Qualifier
- with/without aluminume0
Not reportedComparator
Verbatim
e0“Endophyte A1 also promoted the growth of tea cuttings, especially lateral roots, with/without aluminum”
Claim · model-written summary
aluminum enhanced the distribution of aluminum-tolerant and growth-promoting bacteria, thereby promoting the growth of tea roots
- Taxon
- teae0
- Treatment
- aluminume0
- Outcome
- distribution of aluminum-tolerant and growth-promoting bacteriae0
- Direction
- enhancede0
Not reportedComparator
Verbatim
e0“aluminum enhanced the distribution of aluminum-tolerant and growth-promoting bacteria, thereby promoting the growth of tea roots”
Claim · model-written summary
aluminum enhanced the distribution of aluminum-tolerant and growth-promoting bacteria, thereby promoting the growth of tea roots
Verbatim
e0“aluminum enhanced the distribution of aluminum-tolerant and growth-promoting bacteria, thereby promoting the growth of tea roots”
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