Streptomyces alleviate abiotic stress in plant by producing pteridic acids

Sammanfattning

Soil microbiota can confer fitness advantages to plants and increase crop resilience to drought and other abiotic stressors. However, there is little evidence on the mechanisms correlating a microbial trait with plant abiotic stress tolerance. Here, we report that Streptomyces effectively alleviate drought and salinity stress by producing spiroketal polyketide pteridic acid H (1) and its isomer F (2), both of which promote root growth in Arabidopsis at a concentration of 1.3 nM under abiotic stress. Transcriptomics profiles show increased expression of multiple stress responsive genes in Arabidopsis seedlings after pteridic acids treatment. We confirm in vivo a bifunctional biosynthetic gene cluster for pteridic acids and antimicrobial elaiophylin production. We propose it is mainly disseminated by vertical transmission and is geographically distributed in various environments. This discovery reveals a perspective for understanding plant-Streptomyces interactions and provides a promising approach for utilising beneficial Streptomyces and their secondary metabolites in agriculture to mitigate the detrimental effects of climate change.

Publicerad i

Nature Communications
2023, volym: 14, nummer: 1, artikelnummer: 7398

SLU författare

• Konakalla, Ruparamadurga Naga Charan

  • Institutionen för växtförädling, Sveriges lantbruksuniversitet
    

• Andreasson, Erik

  • Institutionen för växtskyddsbiologi, Sveriges lantbruksuniversitet
    

Associerade SLU-program

SLU Nätverk växtskydd

UKÄ forskningsämne

Jordbruksvetenskap

Publikationens identifierare

• DOI: https://doi.org/10.1038/s41467-023-43177-3

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/127256