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1-aminocyclopropane-1-carboxylate: a novel and strong chemoattractant for the plant beneficial rhizobacterium Pseudomonas putida UW4

Li, Tao ; Zhang, Jun ; Shen, Chaohui ; Li, Huiru ; Qiu, Liyou

Molecular plant-microbe interactions, 2019-06, Vol.32 (6), p.750-759 [Periódico revisado por pares]

United States: American Phytopathological Society

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  • Título:
    1-aminocyclopropane-1-carboxylate: a novel and strong chemoattractant for the plant beneficial rhizobacterium Pseudomonas putida UW4
  • Autor: Li, Tao ; Zhang, Jun ; Shen, Chaohui ; Li, Huiru ; Qiu, Liyou
  • Assuntos: 1-Aminocyclopropane-1-carboxylate oxidase ; Agrochemicals ; Amino acids ; Antisense DNA ; Biofilms ; Chemotactic response ; Colonization ; Deletion mutant ; Ethylene ; Exudates ; Exudation ; Fertilizers ; Fungi ; Gene deletion ; Mushrooms ; Mutants ; Mycelia ; Organic acids ; Plant growth ; Plant roots ; Pseudomonas putida ; Rhizosphere ; Sustainable agriculture ; Wheat
  • É parte de: Molecular plant-microbe interactions, 2019-06, Vol.32 (6), p.750-759
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Descrição: PGPR and fungi-bacterial biofilms are both important biofertilizer inoculants for sustainable agriculture. However, the strongest chemoattractant for bacteria to colonize the rhizosphere and mycelia is not clear. Coincidentally, almost all of the PGPRs possess 1-aminocyclopropane-1-carboxylate (ACC) deaminase (AcdS) and can utilize ACC as the sole nitrogen source. Here, we found that ACC was a novel, metabolic dependent and methyl-accepting chemoreceptor (MCP)-involved chemoattractant for Pseudomonas putida UW4. The chemotactic response of UW4 to ACC is significantly greater than that to the amino acids and organic acids identified in the plant root and fungal hyphal exudates. The colonization accounts of the acdS or cheR deletion mutants of UW4 in the wheat rhizosphere and on Agaricus bisporus mycelia were reduced one magnitude compared to those of UW4. The colonization accounts of UW4 on A. bisporus antisense ACO mycelia with a high ACC production significantly increased compared to A. bisporus, following by UW4 cheR complementary strain and ethylene chemoreceptor gene deletion mutant. The colonization accounts of the UW4 strains on A. bisporus acdS+ mycelia with a low ACC production decreased significantly compared to A. bisporus wt. The results suggested that ACC, not ethylene, should be the strongest chemoattractant for the PGPR that contain AcdS.
  • Editor: United States: American Phytopathological Society
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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