Interakce s dalšími mikroorganismy
Bacillus cereus ERBP
- Plant growth-promoting (PGP) endophytic Bacillus cereus ERBP (endophyte root blue pea)
- Isolated from the root of Clitoria ternatea [12]
- Non-native Z. zamiifolia was effectively inoculated with B. cereus ERBP
- Through soil as the most efficient method of endophyte inoculation
- Without interfering with the natural shoot endophytic diversity of Z. zamiifolia
- Conferred full protection to its non-native host against formaldehyde phytotoxicity
- Enhanced airborne formaldehyde removal of Z. zamiifolia [12]
- Non-inoculated plants
- Suffered from formaldehyde phytotoxicity
- Their natural shoot endophytic community was detrimentally affected by formaldehyde [12]
Plant-endophyte interactions
- Positive role of plant-endophyte interactions
- Providing protection to the plant
- Against pollutant stress
- Through auxin (indole-3-acetic acid (IAA)) production [5]
- Endophyte-inoculated plants behaved differently
- Synthesized and accumulated more tryptophan in the roots
- Higher levels of IAA accumulation
- Higher levels of exudation within roots
- Might act as a signaling molecule to selectively recruit B. cereus ERBP [5]
- Under continuous airborne formaldehyde stress
- Higher levels of ROS accumulation in the shoots
- Pushed the plant to synthesize more tryptophan and IAA in the shoots (compared to the roots)
- Higher levels of IAA in the shoots
- Might act as the potent driving force to relocalize B. cereus ERBP from roots to the shoots [5]
- Under formaldehyde-contaminated soil
- B. cereus ERBP colonized root tissues
- Without moving to the shoots
- tryptophan and IAA levels of the roots without any significant increase in the shoots [5]
Reduce the concentration of ethylbenzene
- Z. zamiifolia reduced ethylbenzene from contaminated indoor air
- 133.9 µmol m?2 leaf area / 24h [13]
Phenylethanol
Acetophenone
Ethylbenzene metabolites
- Found in all parts of treated Z. zamiifolia (leaf, stems, and roots)
- But not in control plants [13]
Efficiency of ethylbenzene removal
- Sterile Z. zamiifolia
- Potential to remove 100 % of 5 ppm ethylbenzene within 60 h
- After inoculating Bacillus cereus ZQN5
- Ethylbenzene removal was enhanced in 36 h [13]
- Pseudomonas aeruginosa itself
- Had a higher ethylbenzene removal rate (10.67 nmolh?1) than B. cereus ZQN5 (7.81 nmolh?1)
- B. cereus ZQN5 associated on leaf surface
- Higher efficiency than with P. aeruginosa
- B. cereus ZQN5 on leaves - v.s. can survive better than under natural conditions with soil microorganisms ::13:
