Penoxsulam-resistant barnyardgrass-mediated rhizosphere microbial communities affect the growth of rice.
Pest Manag Sci
; 79(8): 2664-2674, 2023 Aug.
Article
in En
| MEDLINE
| ID: mdl-36883589
ABSTRACT
BACKGROUND:
The incidence of herbicide-resistant barnyardgrass is escalating in paddy fields, yet the interactions between resistant weeds and rice are largely unknown. The microbiota of herbicide-resistant barnyardgrass rhizosphere soil is critical for both barnyardgrass and rice fitness.RESULTS:
Rice has different biomass allocation and root traits in the presence of penoxsulam-resistant versus penoxsulam-susceptible barnyardgrass or in their conditioned soil. Compared to susceptible barnyardgrass, resistant barnyardgrass led to an allelopathic increase in rice root, shoot, and whole-plant biomasses. Resistant barnyardgrass recruited distinct core and unique microbes in rhizosphere soil compared to susceptible barnyardgrass. In particular, resistant barnyardgrass assembled more Proteobacteria and Ascomycota to enhance plant stress tolerance. Furthermore, the root exudates from resistant and susceptible barnyardgrass were responsible for the assembly and establishment of the root microbial structure. Importantly, (-)-loliolide and jasmonic acid in root exudates were correlated with the core microbes in the rhizosphere soil.CONCLUSION:
The interference of barnyardgrass with rice can be mediated by rhizosphere microbial communities. Biotype-specific variation in the ability to generate soil microbial communities appears to ameliorate the negative consequences for rice growth, providing an intriguing possibility for modulation of the rhizosphere microbiota to increase crop productivity and sustainability. © 2023 Society of Chemical Industry.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Oryza
/
Echinochloa
/
Microbiota
/
Herbicides
Language:
En
Journal:
Pest Manag Sci
Journal subject:
TOXICOLOGIA
Year:
2023
Document type:
Article
Affiliation country:
China