Such findings could help identify plants and chemicals that might be useful for human medications.

此类发现有助于识别可能对人类药物有用的植物物质。

Scientists say the health of the yeast improved greatly after exposure to the chemical extracts.

科家介绍，接触到植物中的物质后，这种酵母的健康程度明显提高。

What's the plants' motivation for producing such chemicals?

那么植物造这样一种物质是何缘由呢?

Fertilizer is a chemical that helps plants grow.

肥是一种帮助植物生长的物质。

Another is that plants develop physical and chemical means to defend themselves.

另一种假说称，植物使用物理的手段来保护自己。

And though the plant as most of us know it has been poisoned by chemicals and denatured by intensive mono-cropping and is therefore hardly the plant it was, still, to some modern Indians it remains a plant of positive power.

尽管我们大多数人都知道这一植物已经被品污染，并因为集约也失去了其本性，因此几乎已经不是原来的样子了，但是一些现代的印第安人仍然把它看作一种拥有积极力量的植物。

And putrefied compost can actually contain chemicals that are toxic to plants — though you might be able to salvage it if you dry it out and try again.

腐烂的堆肥含有对植物有害的物质，尽管可以补救，把堆肥干燥后重做。

If using chlorinated water, it is best to let the liquid sit for 12 to 24 hours to permit the chemical to dissipate before watering plants.

如果使用氯水，最好让液体静置12至24小时，以便在给植物浇水之前使物质消散。

But some plants secrete chemicals from their roots into the soil to prevent other species from sprouting nearby — and that is a little more cutthroat.

但有些植物从根部分泌物质到土壤中，以防止其他物种在附近发芽——这有点残酷。

According to the American Institute for Cancer Research, the phytochemicals in coffee might reduce cancer cell development by slowing cell growth.

根据美国癌症研究所的研究，咖啡中的植物物质可能会通过减缓细胞生长来减少癌细胞的发育。

Plants manufacture numerous chemicals to defend themselves from insects and microbes, by poisoning or ripping apart foreign cells.

植物产生许多物质来保护自己免受昆虫微生物的侵害，毒杀或撕裂外来细胞。

We also take samples back to the lab where we pull out the chemistry from the plant.

我们还将样本带回实验室，从植物中提取成分。

It has very little of the chemicals nitrogen and phosphorus that plants need.

它几乎没有植物所需的物质氮磷。

So there may be a different reason plants have this trait, and another hypothesis suggests that the nickel is a type of chemical attack on other plants—something called allelopathy.

因此，植物聚集镍可能有另一个原因，这种假说认为，聚集镍是对其他植物的一种攻击——这种现象称为植相克。

In the future, chemicals from plants found in and around the Mediterranean may be used to help treat people with brain diseases such as Alzheimer's and Parkinson's.

不久的将来，地中海及其周边发现植物所含的物质将有助于治疗阿尔茨海默病帕金森病等脑部疾病。

Plant tissues - including those we use for spices - are full of phytochemicals, compounds which give many plants their flavor.

植物组织——包括我们用来作香料的植物组织——充满了植物物质，这些合物赋予许多植物香味。

Both are rich sources of anthocyanins, a type of plant chemical called polyphenols that gives them their deep color.

它们都富含花青素，这是一种被称为多酚的植物物质，使它们呈现出深颜色。

When these flavorful phytochemicals hit our food, they can have the same microbe-killing effects.

当这些美味的的植物物质接触到我们的食物时，它们也能起到同样的杀菌作用。

That's the chemical name for one of the chemicals in the cannabis plant.

这是大麻植物中一种物质的名称。

Cannabinoids are active chemicals from the plant that binds to cannabinoid receptors in our bodies.

大麻素是来自植物的活性物质，可与我们体内的大麻素受体结合。