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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Nat+Commun
2025 ; 16
(1
): 8023
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English Wikipedia
Genetic design of soybean hosts and bradyrhizobial endosymbionts reduces N(2)O
emissions from soybean rhizosphere
#MMPMID40908282
Nishida H
; Itakura M
; Win KT
; Li F
; Kakizaki K
; Suzuki A
; Ohkubo S
; Duc LV
; Sugawara M
; Takahashi K
; Shenton M
; Masuda S
; Shibata A
; Shirasu K
; Fujisawa Y
; Tsubokura M
; Akiyama H
; Shimoda Y
; Minamisawa K
; Imaizumi-Anraku H
Nat Commun
2025[Sep]; 16
(1
): 8023
PMID40908282
show ga
Soybeans fix atmospheric N(2) through symbiosis with rhizobia. The relationship
between rhizobia and soybeans, particularly those with high nitrous oxide
(N(2)O)-reducing (N(2)OR) activities, can be leveraged to reduce N(2)O emissions
from agricultural soils. However, inoculating soybeans with these rhizobia under
field conditions often fails because of the competition from indigenous rhizobia
that possess low or no N(2)OR activity. In this work, we utilize natural
incompatibility systems between soybean and rhizobia to address this challenge.
Specifically, Rj2 and GmNNL1 inhibit certain rhizobial infections in response to
NopP, an effector protein. By combining a soybean line with a hybrid accumulation
of the Rj2 and GmNNL1 genes and bradyrhizobia lacking the nopP gene, we develop a
soybean-bradyrhizobial symbiosis system in which strains with high N(2)OR
activity predominantly infect. Our optimize symbiotic system substantially
reduces N(2)O emissions in field and laboratory tests, presenting a promising
approach for sustainable agricultural practices.