C1283 字1:52新闻报道美国腔发布于 2026年4月7日 · 更新于 2026年4月8日

完整音频预览

0:00

Researchers at Rothamsted Research in Hertfordshire have developed gene-edited wheat that produces bread with substantially reduced levels of acrylamide, a probable carcinogen.

赫特福德郡洛桑研究所的研究人员开发出了一种基因编辑小麦，这种小麦制作出的面包中，丙烯酰胺（一种可能的致癌物）含量大幅降低。

The breakthrough, achieved through CRISPR genome editing technology, could have profound implications for food safety across the baking industry worldwide.

这项通过 CRISPR 基因编辑技术实现的突破，可能对全球烘焙业的食品安全产生深远影响。

Wheat naturally contains free asparagine, an amino acid the plant utilises for nitrogen storage.

小麦天然含有游离天门冬酰胺，这是一种植物用来储存氮的氨基酸。

When bread is baked, fried, or toasted, this compound undergoes a chemical transformation into acrylamide, which scientists have classified as a probable carcinogen.

当面包经过烘烤、油炸或烤制时，这种化合物会发生化学转化，变成丙烯酰胺，科学家已将其归类为可能的致癌物。

It is precisely this biochemical pathway that the CRISPR editing technique was designed to disrupt.

正是这条生化路径，被设计为 CRISPR 基因编辑技术所要阻断的目标。

Two years of field trials have demonstrated that CRISPR-edited wheat can achieve significantly lower concentrations of free asparagine without compromising crop yields.

两年的田间试验已证明，经 CRISPR 基因编辑的小麦可以在不损害农作物产量的情况下，显著降低游离天门冬酰胺的浓度。

Targeted edits to the gene responsible for asparagine production reduced the amino acid in grain by fifty-nine percent.

针对负责天门冬酰胺生成的基因进行的靶向编辑，使谷物中的该氨基酸减少了百分之五十九。

Notably, bread and biscuits produced from this gene-edited wheat showed acrylamide levels so low that some samples fell below detectable limits after toasting.

值得注意的是，由这种基因编辑小麦制成的面包和饼干显示出的丙烯酰胺含量极低，以至于某些样本在烘烤后低于可检测的极限。

The scientists compared CRISPR-edited wheat lines with conventionally modified varieties whose genetic material had been altered through chemical mutagenesis.

科学家们将 CRISPR 基因编辑的小麦品系与遗传物质经由化学诱变改变过的传统改良品种进行了比较。

#10

Unlike the latter approach, which induces random mutations throughout the genome, CRISPR enables researchers to target specific genes with surgical precision.

不同于后者诱导整个基因组随机突变的方法，CRISPR 使研究人员能够以手术般的精确度锁定特定基因。

#11

Had this technology not been adapted from naturally occurring editing systems found in bacteria, such targeted modifications would remain beyond our reach.

若非这项技术是改编自细菌中天然存在的编辑系统，这类精准的目标修饰将依然是我们力所不及的。

#12

Should regulatory bodies approve this gene-edited wheat for commercial cultivation, it could fundamentally reshape how the food industry addresses carcinogenic risks in baked goods.

若监管机构批准这种基因编辑小麦进行商业种植，它可能会从根本上重塑食品业处理烘焙食品中致癌风险的方式。

#13

Experts have cautioned, however, that further long-term studies are essential before any widespread adoption.

然而，专家们警告说，在任何广泛采用之前，进一步的长期研究是必不可少的。

#14

Not only does this research represent a significant advance in crop science, but it also underscores the transformative potential of CRISPR technology in safeguarding public health.

这项研究不仅代表了作物科学的重大进展，也强调了 CRISPR 技术在维护公共健康方面的变革性潜力。

片语表 (10 个片语)

片语包含类型标示、双语定义、用法说明和例句。

profound implications

collocation

Deep and far-reaching consequences or effects.

深远的影响

解释： 用于描述某个发现、决定或事件将会带来非常重大且广泛的后果。

范例： The discovery of water on Mars has profound implications for our understanding of the solar system.

surgical precision

idiom

Done with extreme accuracy and control, like a surgeon performing an operation.

解释： 形容动作或技术极其精准，没有丝毫误差。

范例： The drone strikes were carried out with surgical precision to avoid civilian casualties.

beyond our reach

idiom

Impossible to achieve or obtain.

遥不可及；无法实现

解释： 指某事物超出了目前的能力、财力或技术范围。

范例： Without a scholarship, the cost of private university would be beyond our reach.

regulatory bodies

collocation

Public authorities or government agencies responsible for exercising autonomous authority over some area of human activity in a regulatory or supervisory capacity.

监管机构

解释： 指负责制定规则并监督特定行业（如食品、医药、金融）的官方组织。

范例： The new drug must be evaluated by regulatory bodies before it can be sold to the public.

underlines/underscores the potential

collocation

To emphasize or show clearly that something has the possibility to develop or succeed.

突显潜力

解释： 强调某件事物具备转化或成功的可能性。

范例： The success of the pilot program underscores the potential for nationwide implementation.

free asparagine

technical term

Asparagine that exists as a single amino acid molecule rather than being bonded within a protein chain.

游离天门冬酰胺

解释： 在化学与生物学中，“free”（游离的）并非指“免费”或“自由”，而是指该分子未与其他分子（如蛋白质）结合，处于独立状态。

范例： The concentration of free asparagine in the grain determines the potential for acrylamide formation.

wheat lines

technical term

Specific groups of wheat plants that have been bred to have uniform genetic characteristics.

小麦品系

解释： “lines”在此并非指“线条”或“排队”，在遗传学与育种中，它指的是具有特定遗传特征的“品系”或“系谱”。

范例： Researchers compared several gene-edited wheat lines to find the one with the lowest asparagine levels.

field trials

technical term

Experiments conducted in a real-world environment (like a farm) rather than under controlled laboratory conditions.

田间试验

解释： “field”在此并非指一般的“田野”或“领域”，而是指“实地”或“现场”。在科学研究中，这代表将实验从实验室移至实际环境中进行。

范例： After successful lab tests, the vaccine moved to field trials to test its efficacy in the wild.

crop yields

technical term

The total amount of an agricultural product harvested per unit of land area.

农作物产量

解释： “yields”在日常生活中常指“让路”或“屈服”，但在农业与经济语境中，它指的是“产量”或“收益”。

范例： Farmers are concerned that the new regulations might decrease their annual crop yields.

biochemical pathway

technical term

A series of chemical reactions occurring within a cell to achieve a specific biological result.

生化途径

解释： 在科学中，“pathway”并非指物理上的“小径”或“道路”，而是指一系列按顺序发生的化学反应过程。

范例： The drug works by blocking the metabolic pathway that the virus uses to replicate.

Scientists develop gene-edited wheat that can make toasted bread less carcinogenic科学家研发出基因编辑小麦，可降低烤面包的致癌风险

完整音频预览

学习模式

学习内容

单词表 (10 个单词)

片语表 (10 个片语)

推荐课程

学员评价

单词表 (10 个单词)

片语表 (10 个片语)

完整音频预览

学习模式

学习内容

单词表 (10 个单词)

片语表 (10 个片语)

推荐课程

Smokeless Fuels Contain Ultrafine Particles That Get Embedded in Lungs, Study Shows研究显示，无烟燃料含有的超细颗粒会嵌入肺部

What is immunotherapy and how does it treat cancer and other conditions?什么是免疫疗法？它如何治疗癌症和其他疾病？

Why evolution doesn't want you to sleep when you're stressed压力大睡不着？进化论给你答案

New research links prenatal exposure to Pfas to later development of PMOS新研究将产前接触 PFAS 与日后 PMOS 的发展联系起来

学员评价

单词表 (10 个单词)

片语表 (10 个片语)