转基因番茄植株不惧盐水

加入我们的科学爱好者社区!


关于支持科学新闻业

如果您喜欢这篇文章,请考虑通过以下方式支持我们屡获殊荣的新闻报道: 订阅。通过购买订阅,您将帮助确保未来能够继续讲述关于塑造我们当今世界的发现和思想的具有影响力的故事。


每年,近2500万英亩曾经可耕种的土地因含盐灌溉水而流失。沉积在田地中的盐分破坏了植物通过根部吸收水分的能力,降低了生产力,有时甚至会使植物完全脱水。几十年来,科学家们一直试图通过选择性育种来开发耐盐作物,但都无济于事。现在,在8月刊的《自然生物技术》杂志上描述的发现,为我们带来了最初的希望种子。根据该报告,研究人员已经对番茄植株进行了基因改造,使其能在盐水中茁壮成长。

早期的研究已经确定了一种植物蛋白,它可以隔离盐分,将其储存在细胞内区室中,使其不会扰乱植物正常的生化程序。在这一工作的基础上,加州大学戴维斯分校的爱德华多·布鲁姆瓦尔德和多伦多大学博士后研究员张洪霞对番茄植株进行了基因操作,使其制造更多所谓的转运蛋白。即使在用比正常海水咸50倍的水灌溉时,由此产生的植物也能生长并结出果实——比海水咸三分之一还多。

研究人员在温室中种植了这些耐盐植物,但布鲁姆瓦尔德希望未来能在盐碱化土壤中进行田间试验。他指出,如果一切按计划进行,科学家们可以在三年内开发出这些转基因番茄植株的商业化版本。

Kate Wong is an award-winning science writer and senior editor at 大众科学 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

More by Kate Wong
© . All rights reserved.