Dataset Information

Insights into the historical assembly of global dryland floras: the diversification of Zygophyllaceae.

ABSTRACT:

Background

Drylands cover nearly 41% of Earth's land surface and face a high risk of degradation worldwide. However, the actual timeframe during which dryland floras rose on a global scale remains unknown. Zygophyllaceae, an important characteristic component of dryland floras worldwide, offers an ideal model group to investigate the diversification of dryland floras. Here, we used an integration of the phylogenetic, molecular dating, biogeographic, and diversification methods to investigate the timing and patterns of lineage accumulation for Zygophyllaceae overall and regionally. We then incorporated the data from other dominant components of dryland floras in different continents to investigate the historical construction of dryland floras on a global scale.

Results

We provide the most comprehensive phylogenetic tree for Zygophyllaceae so far based on four plastid and nuclear markers. Detailed analyses indicate that Zygophyllaceae colonized Africa, Asia, Australia, and the New World at different periods, sometimes multiple times, but Zygophyllaceae lineages in the four regions all experienced a rapid accumulation beginning at the mid-late Miocene (~?15-10 Ma). Other eleven essential elements of dryland floras become differentiated at the same time.

Conclusions

Our results suggest that the rise of global dryland floras is near-synchronous and began at the mid-late Miocene, possibly resulting from the mid-Miocene global cooling and regional orogenetic and climate changes. The mid-late Miocene is an essential period for the assembly and evolution of global dryland floras.

SUBMITTER: Wu SD

PROVIDER: S-EPMC6234786 | biostudies-literature | 2018 Nov

REPOSITORIES: biostudies-literature

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Publications

Insights into the historical assembly of global dryland floras: the diversification of Zygophyllaceae.

Wu Sheng-Dan SD Zhang Lin-Jing LJ Lin Li L Yu Sheng-Xiang SX Chen Zhi-Duan ZD Wang Wei W

BMC evolutionary biology 20181109 1

<h4>Background</h4>Drylands cover nearly 41% of Earth's land surface and face a high risk of degradation worldwide. However, the actual timeframe during which dryland floras rose on a global scale remains unknown. Zygophyllaceae, an important characteristic component of dryland floras worldwide, offers an ideal model group to investigate the diversification of dryland floras. Here, we used an integration of the phylogenetic, molecular dating, biogeographic, and diversification methods to investi ...[more]

PMID: 30413147

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Dataset Information

Insights into the historical assembly of global dryland floras: the diversification of Zygophyllaceae.

Background

Results

Conclusions

Publications

Insights into the historical assembly of global dryland floras: the diversification of Zygophyllaceae.

Similar Datasets

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