MICROBIAL CYANIDE PRODUCTION IN THE RHIZOSPHERE IN RELATION TO POTATO YIELD REDUCTION AND PSEUDOMONAS SPP-MEDIATED PLANT GROWTH-STIMULATION
MICROBIAL CYANIDE PRODUCTION IN THE RHIZOSPHERE IN RELATION TO POTATO YIELD REDUCTION AND PSEUDOMONAS SPP-MEDIATED PLANT GROWTH-STIMULATION
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DOI：
10.1016/0038-0717(87)90037-x
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发表时间：
1987-01-01
影响因子：
9.7
通讯作者：
SCHIPPERS, B
中科院分区：
文献类型：
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作者：
BAKKER, AW;SCHIPPERS, B
根细胞能量代谢的抑制被认为是马铃薯短轮作土壤中马铃薯产量下降的原因。氰化氢是可能参与抑制能量代谢的微生物代谢物。以下观察结果支持了这一点：(1) 大约 50% 的马铃薯根际假单胞菌显示出在体外产生氰化物； (2)5亩。在体外，HCN 可抑制完整马铃薯根部细胞色素氧化酶呼吸至少 40%； (3) 假单胞菌体外产生氰化物。分离 WCS361 取决于培养基中 Fe3+ 的浓度。促生长荧光假单胞菌分离株 WCS374 和 WCS358 在体外不产生氰化物。讨论了一种假设，即马铃薯短轮作土壤中马铃薯植株生长因根际微生物产生氰化物而受到抑制。在此类土壤中，产生特定铁载体的细菌通过与产生氰化物的生物体竞争 Fe3+ 来促进生长。
Inhibition of root cell energy metabolism is suggested to be responsible for potato yield reductions in short potato-rotation soils. Hydrogen cyanide is the microbial metabolite possibly involved in inhibition of energy metabolism. This is supported by the following observations: (1) approximately 50% of potato rhizosphere pseudomonads was shown to produced cyanide in vitro; (2) 5 .mu. HCN inhibited cytochrome oxidase respiration by at least 40% in intact potato roots in vitro; (3) cyanide production in vitro by Pseudomonas sp. isolate WCS361 depended on the Fe3+ concentration of the medium. Growth promoting fluorescent Pseudomonas spp isolates WCS374 and WCS358 did not produce cyanide in vitro. A hypothesis, that potato plant growth is depressed in short potato rotation soils by the microbial production of cyanide in the rhizosphere is discussed. In such soils, bacteria producing specific siderophores increase growth by competing with cyanide-producing organisms for Fe3+.