Root nodules of most legumes evolve hydrogen in an ATP-dependent reaction catalyzed by nitrogenase. Since nitrogen fixation by the Rhizobium-legume system is limited by the supply of photosynthate, the hydrogen evolut...Root nodules of most legumes evolve hydrogen in an ATP-dependent reaction catalyzed by nitrogenase. Since nitrogen fixation by the Rhizobium-legume system is limited by the supply of photosynthate, the hydrogen evolution process of legume root nodules may be regarded as energy waste and inefficiency in the symbiosis.展开更多
Uptake hydrogenase in Rhizobium is a desirable attribute of the bacterium to prevent plant energy losses during symbiosis. Comparative inoculation studies with H<sub>2</sub>-uptake positive （Hup<sup>...Uptake hydrogenase in Rhizobium is a desirable attribute of the bacterium to prevent plant energy losses during symbiosis. Comparative inoculation studies with H<sub>2</sub>-uptake positive （Hup<sup>+</sup>） and H<sub>2</sub>-uptake negative （Hup<sup>-</sup>） strains in soybean, pea and ’cow pea group’ hosts have shown anomalies from significant differences in plant weight and plant nitrogen to non-significant differences in the effectivity. However, in cow pea where non-significant difference in effectivity has been observed, the Hup<sup>+</sup>展开更多
基金Project supported by the National Natural Science Foundation of China
文摘Root nodules of most legumes evolve hydrogen in an ATP-dependent reaction catalyzed by nitrogenase. Since nitrogen fixation by the Rhizobium-legume system is limited by the supply of photosynthate, the hydrogen evolution process of legume root nodules may be regarded as energy waste and inefficiency in the symbiosis.
基金Project supported by research grants encouraging young researchers from Academia Sinica.
文摘Uptake hydrogenase in Rhizobium is a desirable attribute of the bacterium to prevent plant energy losses during symbiosis. Comparative inoculation studies with H<sub>2</sub>-uptake positive （Hup<sup>+</sup>） and H<sub>2</sub>-uptake negative （Hup<sup>-</sup>） strains in soybean, pea and ’cow pea group’ hosts have shown anomalies from significant differences in plant weight and plant nitrogen to non-significant differences in the effectivity. However, in cow pea where non-significant difference in effectivity has been observed, the Hup<sup>+</sup>
