Rhizobitoxine production by Bradyrhizobium elkanii enhances nodulation and competitiveness on Macroptilium atropurpureum.
Application of 1-aminoocyclopropane-1-carboxylic acid, an ethylene precursor, decreased nodulation of Macroptilium atropurpureum by Bradyrhizobium elkanii. B. elkanii produces rhizobitoxine, an ethylene synthesis inhibitor. Elimination of rhizobitoxine production in B. elkanii increased ethylene evolution and decreased nodulation and competitiveness on M. atropurpureum. These results suggest that rhizobitoxine enhances nodulation and competitiveness of B. elkanii on M. atropurpureum.
Yuhashi
K
K
Institute of Genetic Ecology, Tohoku University, Katahira, Aoba-ku, Sendai, 980-8577, Japan.
Ichikawa
N
N
Ezura
H
H
Akao
S
S
Minakawa
Y
Y
Nukui
N
N
Yasuta
T
T
Minamisawa
K
K
D000596:Amino Acids / Q000494:pharmacology; D000598:Amino Acids, Cyclic; D020369:Bradyrhizobium / Q000235:genetics / Q000378:metabolism* / Q000502:physiology; D005030:Ethylenes / Q000096:biosynthesis / Q000494:pharmacology; D007887:Fabaceae / Q000382:microbiology*; D009586:Nitrogen Fixation / Q000187:drug effects*; D010946:Plants, Medicinal; D010957:Plasmids / Q000235:genetics; D011412:Propanolamines / Q000378:metabolism* / Q000494:pharmacology
D000596:Amino Acids; D000598:Amino Acids, Cyclic; D005030:Ethylenes; D011412:Propanolamines; C023863:1-aminocyclopropane-1-carboxylic acid; C036216:ethylene; C041618:rhizobitoxine