C4 photosynthesis evolved in warm climates but promoted migration to cooler ones.
C4 photosynthesis evolved in warm climates but promoted migration to cooler ones.
复制标题
C4 光合作用在温暖的气候中进化，但促进了向凉爽气候的迁移。
DOI：
10.1111/ele.12905
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发表时间：
2018
期刊：
影响因子：
8.8
通讯作者：
C. Osborne
中科院分区：
文献类型：
--
作者：
Teera Watcharamongkol;P. Christin;C. Osborne
C4光合作用被认为是对温暖气候的一种适应，在那里它的功能效益最大，C4植物实现了最高的多样性和优势。然而，是否固有的生理障碍阻碍C4物种在凉爽环境中的持久性仍然存在争议。在这里，我们使用大型草的系统发育和地理分布数据集来测试（1）温度是否影响C4起源的速率，（2）光合类型是否影响气候带之间的迁移速率，以及（3）C4进化是否改变温度生态位的宽度。我们的分析表明，C4光合作用在草起源于热带气候，C3草更有可能殖民寒冷的气候。然而，热带和温带气候之间的迁移率较高的C4草。因此，虽然C4光合作用的起源集中在热带气候中，但其在广泛温度范围内的生理益处将生态位扩展到温暖的气候中，并使多样化成为凉爽的环境。
C4 photosynthesis is considered an adaptation to warm climates, where its functional benefits are greatest and C4 plants achieve their highest diversity and dominance. However, whether inherent physiological barriers impede the persistence of C4 species in cool environments remains debated. Here, we use large grass phylogenetic and geographical distribution data sets to test whether (1) temperature influences the rate of C4 origins, (2) photosynthetic types affect the rate of migration among climatic zones, and (3) C4 evolution changes the breadth of the temperature niche. Our analyses show that C4 photosynthesis in grasses originated in tropical climates, and that C3 grasses were more likely to colonise cold climates. However, migration rates among tropical and temperate climates were higher in C4 grasses. Therefore, while the origins of C4 photosynthesis were concentrated in tropical climates, its physiological benefits across a broad temperature range expanded the niche into warmer climates and enabled diversification into cooler environments.
影响因子：
64.5
作者：
Heckmann, David;Schulze, Stefanie;Lercher, Martin J.
通讯作者：
Lercher, Martin J.
影响因子：
18
作者：
Atkinson, Rebecca R. L.;Mockford, Emily J.;Osborne, Colin P.
通讯作者：
Osborne, Colin P.
影响因子：
9.4
作者：
Osborne, Colin P.;Salomaa, Anna;Simpson, David A.
通讯作者：
Simpson, David A.