nitrogenase

简明释义

英[naɪˈtrɒdʒəˌneɪz]美[naɪtrɑːdʒəˌneɪz]

n. [生化] 固氮酶

英英释义

单词用法

同义词

反义词

例句

1.There was a negative correlation between the nitrogenase activities of nitrogen fixing bacteria in root and that in leaf and stem.

此外，甘蔗根、茎、叶中固氮菌的固氮酶活性之间关系较为密切，根中固氮菌的固氮酶活性与叶片和茎中的都呈负相关。

2.The level of nitrogenase activity was correlated reciprocally with the content of cell phycocyanin and the light intensity.

酶活的高低与藻蓝素含量和光照强度成反相关。

3.Molybdenum is an essential element consisting of nitrogenase enzyme complex.

钼是豆科作物固氮酶复合体组成的必需元素。

4.Ethylene was used as a probe to detect the N2-binding site in nitrogenase.

用乙烯为探针研究了固氮酶中n2的键合位。

5.There were many good strains which had such potential such as X4 and X1 in Xi 'an only in consideration of nitrogenase activity. But few strains with such ability were isolated from Lanzhou.

单从固氮酶活性来看，西安地区草地有开发潜力的优良菌株相对较多，如X4和X1，而兰州地区的相对较少。

6.Chromium treatment significantly decreased nodule Numbers, nodule fresh weight, leghemoglobin content and nitrogenase (acetylene reduction) activity per plant or per gram of nodules.

铬还使单株固氮酶活性(乙炔还原法测定)显著降低，用高浓度铬处理者克瘤固氮活性也显著降低。

7.Reduced nicotinamide nucleotides can function as reductants to nitrogenase.

还原的烟酰胺核苷酸对固态酶可以起还原剂的作用。

8.The photosynthetic rate and excretory ability affected the nitrogenase activity in the rhizosphere.

水稻的光合作用及报分泌能力影响根际固氮活性。

9.Soil drought reduced moisture content and nitrogenase activity of nodules.

土壤干旱降低田菁根瘤的含水量和固氮活性。

10.The enzyme nitrogenase plays a crucial role in the nitrogen fixation process.

酶氮酶在氮固定过程中起着至关重要的作用。

11.Certain bacteria have the ability to produce nitrogenase to convert atmospheric nitrogen into ammonia.

某些细菌能够产生氮酶将大气中的氮转化为氨。

12.Research on nitrogenase can lead to advancements in sustainable agriculture.

对氮酶的研究可以促进可持续农业的发展。

13.The activity of nitrogenase is often affected by environmental factors such as temperature and pH.

环境因素如温度和pH值常常影响氮酶的活性。

14.Scientists are exploring the genetic pathways that regulate nitrogenase production in legumes.

科学家们正在探索调节豆科植物中氮酶生产的遗传途径。

作文

Nitrogen is an essential element for all living organisms, as it is a key component of amino acids, proteins, and nucleic acids. However, the majority of Earth's nitrogen exists in the atmosphere in the form of N2, which is not directly usable by most organisms. To convert atmospheric nitrogen into a form that can be utilized by plants and other organisms, certain bacteria have developed a remarkable enzyme known as nitrogenase (氮酶). This enzyme plays a critical role in the process of nitrogen fixation, which is the conversion of atmospheric nitrogen into ammonia, a form that plants can absorb and use for growth.The discovery of nitrogenase has been a significant milestone in the field of biochemistry and agriculture. The enzyme is found in various types of bacteria, including those that live freely in the soil and those that form symbiotic relationships with the roots of certain plants, such as legumes. These bacteria possess the unique ability to break the strong triple bond in molecular nitrogen (N2) and incorporate it into organic compounds.The mechanism of action of nitrogenase is quite complex. It requires a significant amount of energy, which is typically derived from ATP (adenosine triphosphate). The enzyme is composed of multiple protein components, which work together to facilitate the reduction of nitrogen gas into ammonia. This process not only enriches the soil with nutrients but also supports the growth of plants, which in turn supports entire ecosystems and food chains.In agricultural practices, the role of nitrogenase is invaluable. Farmers often rely on leguminous crops, such as beans and peas, to naturally enhance soil fertility through the action of these nitrogen-fixing bacteria. By planting these crops in rotation with other types of plants, farmers can reduce their reliance on synthetic fertilizers, which can have harmful environmental effects. The natural process of nitrogen fixation mediated by nitrogenase helps maintain a sustainable agricultural system.Research into nitrogenase is ongoing, as scientists seek to understand its structure and function at a molecular level. This knowledge could lead to advancements in biotechnology, such as the development of genetically modified organisms that can fix nitrogen more efficiently. Such innovations could revolutionize agriculture by reducing the need for chemical fertilizers and promoting more sustainable farming practices.In conclusion, nitrogenase (氮酶) is a vital enzyme that facilitates the conversion of atmospheric nitrogen into a form that is accessible to living organisms. Its role in nitrogen fixation is crucial for the health of ecosystems and the sustainability of agriculture. As we continue to explore the potential of this enzyme, we may uncover new ways to enhance food production while minimizing our environmental impact. Understanding and harnessing the power of nitrogenase could be key to addressing global challenges related to food security and environmental sustainability.

氮是所有生物体必需的元素，因为它是氨基酸、蛋白质和核酸的关键组成部分。然而，地球上大多数氮以N2的形式存在于大气中，这对大多数生物体来说是不可直接利用的。为了将大气中的氮转化为植物和其他生物体可以利用的形式，某些细菌发展出了一种显著的酶，称为氮酶（nitrogenase）。这种酶在氮固定过程中发挥着关键作用，该过程是将大气中的氮转化为氨的过程，氨是植物可以吸收并用于生长的形式。氮酶的发现是生物化学和农业领域的重要里程碑。这种酶存在于多种细菌中，包括那些自由生活在土壤中的细菌和那些与某些植物（如豆类）根系形成共生关系的细菌。这些细菌具有独特的能力，可以打破分子氮（N2）中的强三键，并将其纳入有机化合物中。氮酶的作用机制相当复杂。它需要大量的能量，通常来自ATP（腺苷三磷酸）。该酶由多个蛋白质组分组成，这些组分共同工作以促进氮气还原为氨的过程。这一过程不仅使土壤富含养分，还支持植物的生长，而植物又支持整个生态系统和食物链。在农业实践中，氮酶的作用是无价的。农民通常依赖豆科作物，如豆类和豌豆，通过这些固氮细菌的作用自然增强土壤肥力。通过与其他类型的植物轮作种植这些作物，农民可以减少对合成肥料的依赖，而合成肥料可能对环境产生有害影响。由氮酶介导的自然氮固定过程有助于维持可持续的农业系统。对氮酶的研究仍在继续，科学家们试图了解其结构和功能的分子水平。这些知识可能导致生物技术的进步，例如开发能够更有效地固定氮的转基因生物。这些创新可能会彻底改变农业，减少对化肥的需求，并促进更可持续的耕作实践。总之，氮酶（nitrogenase）是一种重要的酶，促进了大气氮转化为生物体可获取的形式。它在氮固定中的作用对生态系统的健康和农业的可持续性至关重要。随着我们继续探索这种酶的潜力，我们可能会发现增强食品生产的新方法，同时最小化我们的环境影响。理解和利用氮酶的力量可能是应对与食品安全和环境可持续性相关的全球挑战的关键。