Amino Acids From Root Exudates Induce Bacillus Spore Germination to Enhance Root Colonisation and Plant Growth Promotion DOI Creative Commons
Lili Tao, Xinli Sun, Pascale B. Beauregard

и другие.

Microbial Biotechnology, Год журнала: 2025, Номер 18(6)

Опубликована: Май 30, 2025

ABSTRACT Strains of Bacillus species, plant growth‐promoting rhizobacteria, have been commercialised as biofertilisers; they are ideal for this because these species form spores that can be stored stably a long time. However, to exert their full beneficial effects, must germinate. The specific germination signals in the rhizosphere, particularly those from root exudates, remain largely unknown. Here, we investigated different growth states cucumber ( Cucumis sativus ) velezensis SQR9 and subtilis NCIB 3610. We identified corresponding receptors compared them biochemically between species. Larger plants better stimulated spore germination. Five amino acids—L‐isoleucine, L‐ornithine, L‐valine, L‐serine β‐alanine were—identified signals. Combined application mixture acids with bacterial markedly enhanced properties B. SQR9. receptor was GerA both Differences efficiency may attributable variations ligand‐recognition sites. Expression 3610 rate latter. Our study highlights pivotal role regulating subsequent colonisation, emphasising potential enhance efficacy ‐based biofertilisers. Engineering is promising approach biofertiliser strains.

Язык: Английский

Amino Acids From Root Exudates Induce Bacillus Spore Germination to Enhance Root Colonisation and Plant Growth Promotion DOI Creative Commons
Lili Tao, Xinli Sun, Pascale B. Beauregard

и другие.

Microbial Biotechnology, Год журнала: 2025, Номер 18(6)

Опубликована: Май 30, 2025

ABSTRACT Strains of Bacillus species, plant growth‐promoting rhizobacteria, have been commercialised as biofertilisers; they are ideal for this because these species form spores that can be stored stably a long time. However, to exert their full beneficial effects, must germinate. The specific germination signals in the rhizosphere, particularly those from root exudates, remain largely unknown. Here, we investigated different growth states cucumber ( Cucumis sativus ) velezensis SQR9 and subtilis NCIB 3610. We identified corresponding receptors compared them biochemically between species. Larger plants better stimulated spore germination. Five amino acids—L‐isoleucine, L‐ornithine, L‐valine, L‐serine β‐alanine were—identified signals. Combined application mixture acids with bacterial markedly enhanced properties B. SQR9. receptor was GerA both Differences efficiency may attributable variations ligand‐recognition sites. Expression 3610 rate latter. Our study highlights pivotal role regulating subsequent colonisation, emphasising potential enhance efficacy ‐based biofertilisers. Engineering is promising approach biofertiliser strains.

Язык: Английский

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