对野生植物种群来说，这是一个艰难的考验

IF 44.7 1区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

Science Pub Date : 2025-05-01

Sally N. Aitken

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引用次数: 0

摘要

种群维持生存的温度和降水范围形成了陆地生物的气候生态位。许多植物(1)和动物(2)物种由当地适应工业化前气候的种群组成，与整个物种相比，每个亚群耐受的气候条件范围较小(3)。现有的遗传变异是否足以适应气候变化所需要的逆转人口下降的过程（一个被称为进化拯救的过程）？从温暖地区到寒冷地区的迁徙能否提供气候适应所需的多样性（基因拯救）(5)？在本期的第525页，Anderson等人(6)报道说，即使是在美国落基山脉广泛分布的岩石植物Boechera stricta，也需要基因从温暖的海拔流向凉爽的海拔——可能是由人类干预促进的——以支持某些植物在变暖气候下的未来生存。

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An uphill grind for wild plant populations

The range of temperature and precipitation across which populations remain viable forms the climatic niche for terrestrial life. Many plant (1) and animal (2) species consist of populations that are locally adapted to their preindustrial climates, with each subgroup tolerating a smaller range of climate conditions compared with the whole species (3). Will existing genetic variation be sufficient for the adaptation needed to reverse population decline as climates change (a process known as evolutionary rescue) (4)? Can migration from warmer to cooler regions provide the diversity required for climate adaptation (genetic rescue) (5)? On page 525 of this issue, Anderson et al. (6) report that even for the widely distributed species of the rock cress Boechera stricta in the United States Rocky Mountains, gene flow from warmer to cooler elevations—possibly facilitated by human intervention—is needed to support future survival of some plants in a warming climate.

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来源期刊

Science 综合性期刊-综合性期刊

CiteScore

61.10

自引率

0.90%

发文量

审稿时长

2.1 months

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