rhizobia

简明释义

英[raɪˈzəʊbɪə]美[raɪˈzobɪəm]

n. [土壤] 根瘤菌

英英释义

单词用法

同义词

反义词

例句

1.Rhizobia establish a symbiotic relationship with their host plant ― exchanging nitrogen for nutrients ― by forming nodules, which penetrate the roots and sometimes stems of the plant.

根瘤菌通过形成根瘤和它们的宿主建立了一种共生关系——用氮换取营养。 根瘤通常会渗透进植物的根，有时候还会渗透进植物的茎。

2.Nitrogen fixation is carried out by the rhizobia in the anaerobic environment of the nodule.

氮的固定是由无氧环境的根瘤中的根瘤菌完成的。

3.The results showed that these strains varied in colony morphologies, growth rates, physiological and biochemical characteristics of rhizobia.

菌株之间在菌落形态、生长速度、生理生化特性等方面存在着明显的差异。

4.Nodules occupied by the marked strain turned blue in the GUS staining buff, while others occupied by the indigenous rhizobia didn't.

标记菌株形成的根瘤可被GUS染色缓冲液染成蓝色，而土著菌形成的根瘤不能着色。

5.The nitrogen fixation rate per plant was high by inoculated rhizobia only, but the pod number and yield per plant only increased by 6.9% and 5.9% compared with CK.

不施氮肥只接种根瘤菌的处理，根瘤菌的固氮量虽高，但植株生长量和荚果产量则明显降低，单株结果数和荚果产量仅比对照处理增加6.9%和5.9%。

6.The growth enhancement of intercropped fababean and wheat has been studied via pot experiment with root barriers and rhizobia inoculation.

本文通过在不同根系分隔方式中对间作蚕豆接种不同根瘤菌株的盆栽试验，研究了间作蚕豆和小麦生长状况。

7.The rhizobia bind specifically to the root hair tip, attaching to special plant proteins called lectins.

根瘤菌特异性地结合在根须末端，粘附在一种叫做凝集素的特殊植物蛋白之后进入根须。

8.Different species of rhizobia can form symbiotic relationships with various legumes.

不同种类的根瘤菌可以与各种豆类形成共生关系。

9.Farmers often inoculate their crops with rhizobia to enhance soil fertility.

农民通常用根瘤菌给作物接种，以增强土壤肥力。

10.The study focused on the role of rhizobia in nitrogen fixation for leguminous plants.

这项研究集中在根瘤菌在豆科植物氮固定中的作用。

11.The presence of rhizobia in the soil is crucial for sustainable agriculture.

土壤中存在根瘤菌对可持续农业至关重要。

12.Research shows that rhizobia can significantly improve crop yields.

研究表明，根瘤菌可以显著提高作物产量。

作文

In the world of agriculture and environmental science, the term rhizobia refers to a group of bacteria that play a crucial role in the nitrogen cycle. These bacteria have a unique ability to form symbiotic relationships with the roots of leguminous plants such as peas, beans, and clover. This relationship is vital for both the plants and the soil, as it enhances soil fertility and promotes sustainable farming practices.The process begins when rhizobia bacteria enter the root hairs of leguminous plants. They trigger the formation of root nodules, where they reside and convert atmospheric nitrogen into ammonia, a form of nitrogen that plants can readily use. This natural process not only provides essential nutrients to the plants but also reduces the need for synthetic fertilizers, which can be harmful to the environment.One of the most significant benefits of utilizing rhizobia in agriculture is their contribution to sustainable farming. By incorporating legumes into crop rotations, farmers can enhance soil health and reduce dependency on chemical fertilizers. This practice not only lowers production costs but also minimizes the risk of environmental pollution caused by excess fertilizer runoff.Moreover, the use of rhizobia has been shown to improve crop yields. Studies indicate that leguminous crops inoculated with specific strains of rhizobia can yield significantly more produce compared to those that are not. This increased productivity is particularly important in regions facing food insecurity, as it offers a natural solution to enhance food production without compromising environmental integrity.In addition to their agricultural benefits, rhizobia also play a role in biodiversity. By promoting plant growth and health, these bacteria support a variety of ecosystems. Healthy leguminous plants can provide habitats and food sources for numerous organisms, contributing to overall ecosystem stability.However, the effectiveness of rhizobia can vary depending on several factors, including soil type, climate, and the specific strain of bacteria used. Therefore, it is essential for farmers to choose the appropriate rhizobia strains that are well-suited to their local conditions. Research and field trials are crucial in identifying the best combinations for optimal results.Furthermore, the application of biotechnology in enhancing rhizobia strains presents exciting possibilities. Scientists are exploring genetic modifications to create more efficient strains that can fix nitrogen under a broader range of environmental conditions. This could revolutionize agricultural practices and further reduce the reliance on chemical fertilizers.In conclusion, rhizobia are indispensable allies in sustainable agriculture. Their ability to form symbiotic relationships with leguminous plants not only improves soil fertility but also enhances crop yields and supports biodiversity. As we continue to face challenges related to food security and environmental sustainability, harnessing the power of rhizobia will be essential for the future of agriculture. By investing in research and education about these beneficial bacteria, we can pave the way for a more sustainable and productive agricultural system that benefits both farmers and the planet.

在农业和环境科学的世界中，术语rhizobia指的是一组在氮循环中发挥关键作用的细菌。这些细菌具有与豆科植物根部形成共生关系的独特能力，例如豌豆、豆类和三叶草。这种关系对植物和土壤都是至关重要的，因为它增强了土壤肥力并促进可持续农业实践。这一过程始于rhizobia细菌进入豆科植物的根毛。它们触发根结的形成，在那里它们栖息并将大气中的氮转化为氨，这是一种植物可以直接使用的氮形式。这一自然过程不仅为植物提供了必需的营养，还减少了对合成肥料的需求，而合成肥料可能对环境有害。利用rhizobia在农业中的一个显著好处是它们对可持续农业的贡献。通过将豆类作物纳入轮作中，农民可以增强土壤健康并减少对化肥的依赖。这种做法不仅降低了生产成本，还最小化了因过量施肥造成的环境污染风险。此外，使用rhizobia已被证明可以提高作物产量。研究表明，接种特定菌株的豆科作物与未接种的相比，产量可以显著增加。这种生产力的提高在面临粮食不安全的地区尤为重要，因为它提供了一种自然解决方案，以提高粮食生产而不损害环境完整性。除了农业利益外，rhizobia还在生物多样性中发挥着作用。通过促进植物的生长和健康，这些细菌支持了多种生态系统。健康的豆科植物可以为无数生物提供栖息地和食物来源，从而有助于整体生态系统的稳定。然而，rhizobia的有效性可能因几种因素而异，包括土壤类型、气候和所使用的细菌特定菌株。因此，农民选择适合当地条件的适当rhizobia菌株至关重要。研究和田间试验在识别最佳组合以获得最佳结果方面至关重要。此外，生物技术在增强rhizobia菌株方面的应用展现了令人兴奋的可能性。科学家们正在探索基因改造，以创造能够在更广泛环境条件下固定氮的更高效的菌株。这可能会彻底改变农业实践，并进一步减少对化肥的依赖。总之，rhizobia是可持续农业中不可或缺的盟友。它们与豆科植物形成的共生关系不仅改善了土壤肥力，还提高了作物产量并支持了生物多样性。随着我们继续面临与粮食安全和环境可持续性相关的挑战，利用rhizobia的力量对于未来农业至关重要。通过投资于对这些有益细菌的研究和教育，我们可以为一个更可持续和高效的农业系统铺平道路，造福农民和地球。