Biologists discovered extinct plants 15 million years ago in amber-海思k3v2

Biologists discovered the extinct plants (Amber) in amber 15 million years ago and were sealed in amber flowers. Flowers sealed in amber. Original title: the extinction of plants in Guangzhou daily news   found in amber; biologists announced that they found a kind of extinct plants plants from heavy amber formed 15 million years ago, this finding is based on two strains of "seals" in amber flowers. The researchers call it Strychnos  electri. Experts tend to think of a as Strychnos, but also in line with the characteristics of the attribute part of chrysanthemum plants. The results have been published in the journal natural botany.     intact plants of the genus Strychnos general in the tropics, the genus of trees and shrubs, vines contain deadly poison strychnine. American researchers named the amber "amber" as the name of the plant found in amber. Amber is a fossilized resin that comes from trees that have died for a long time. In 1986, Oregon State University professor George · is that Iraq conducted a field survey, found 500 fossils, two flower plants containing extinct fossil in them. Is that Iran professor is a famous entomologist, most of these fossils are fossil insects. Interestingly, from the beginning to explore the fossils, a professor that Iraq spent nearly 30 years studying fossil insects, and then focus on the flowers. In general, the fossil plants found in amber are fragments. But the two flowers are unusually complete. In 2015, it will be quite Iran some high pixel photo to the Rutgers University professor Lina · ADAMS Chu wei. "These flowers look like they’ve just fallen off a tree." The professor is Yi said: "I think they may be strychnos. I will send photos of Lina, because she is an expert in Strychnos." This may be toxic to proceed to Professor Chu Wei this plant fossils found in comparison with the currently known 200 stud money genus, compare their physiological structure. To this end, she combed a collection of museums and herbarium collections. "A factor defined logania species most commonly used is the shape of the flower. We are very lucky that the flowers in the fossils are in complete shape." "I looked at all the species of the new continents, photographed and measured them, and compared them with the pictures George sent me," said Professor wei. I asked myself, "what’s the fuzz on the petals?" Where are these villi growing?" For late Cretaceous animals, this plant may not be suitable for food. "All the plants are almost toxic strychnos." Professor Yi said, "each plant of this genus contains different alkaloids and has different effects. Some are more toxic." Professor Yi believes that these two flowers can be well preserved, probably due to their toxicity, so that they are spared from the mouth of herbivores. A professor mentioned that Iran alkaloids, most notably Brucine, it is a lot of old Yi 生物学家在1500万年前琥珀中发现灭绝植物(图) 被“封印”在琥珀中的花朵。 被“封印”在琥珀中的花朵。   原标题:琥珀中发现灭绝植物   广州日报讯 生物学家宣布,他们从1500万年前形成的厚重琥珀中发现了一种已灭绝植物的植株,这项发现的基础是两株“封印”在琥珀中的花朵。研究者将其称为Strychnos electri。专家倾向于认为其为马钱属植物的一种,但其部分特征也符合菊类植物的属性。这项研究成果已经发表在《自然植物学》期刊上。     完好如初   马钱属植物一般生在热带,该属的灌木、树和藤类都含有致命的剧毒马钱子碱。美国研究者以希腊文“琥珀”为这种在琥珀中发现的植物命名。琥珀是树脂形成的化石,来自死去已久的树木。   1986年,美国俄勒冈州立大学教授乔治·颇伊那进行过一项田野调查,发现了500块化石,含有灭绝植物的两朵花的化石就在其中。颇伊那教授是一位著名的昆虫学家,这批化石大多数都是昆虫化石。有意思的是,从发掘这批化石开始,颇伊那教授花了近30年的时间研究化石里的昆虫,然后才将注意力放到花朵上。   一般来说,琥珀中找到的植物化石都是碎片。但这两株花朵却异乎寻常地完整。2015年,颇伊那将一些高像素的照片发给了美国罗格斯大学的教授丽娜·斯楚威。“这些花看上去就像是刚从树上掉下来。”颇伊那教授说:“我认为它们也许是马钱属植物。我将照片发给丽娜,因为她是马钱属植物的专家。”   可能有毒   斯楚威教授着手将化石中发现的这种植物与目前已知的200种马钱属植物进行比对,比较其生理结构。为此,她梳理了多个博物馆和标本馆的收藏。   “最常用的定义马钱属物种的一个因素就是花的形态。我们非常幸运,化石中的花形态完整。”斯楚威教授说:“我检视了新大陆各个物种的标本,拍摄和测量它们,然后与乔治发给我的照片进行对比。我问我自己:‘花瓣上的绒毛是怎样的?这些绒毛长在什么地方?’”   对于白垩纪晚期的动物来说,这种植物可能不太适合当食物。“马钱属的所有植物几乎都有毒。”颇伊那教授说:“这个属的每种植物都含有不同的生物碱类,有不同的效果。有些毒性更强。”颇伊那教授认为,这两株花朵能够完好地保存下来,很可能得益于其毒性,让它们免于食草动物之口。颇伊那教授提到的生物碱类之中,最有名的就是马钱子碱,它是许多老鼠药的基本配方之一,也是希区柯克电影里的杀人武器。   但是,这种植物的很多特征也符合菊类植物的属性。菊类植物包含8万种开花植物,其中很多是可食用的,比如土豆、薄荷、向日葵以及咖啡豆。这项新的发现也可能为菊属的化石增添了重要的补充。(思珈) 责任编辑:李天奕相关的主题文章: