Adaptive responses drive the success of polyploid yellowcresses (Rorippa, Brassicaceae) in the Hengduan Mountains, a temperate biodiversity hotspot

Han, Ting‐Shen; Hu, Zhengyan; Du, Zhiqiang; Zheng, Quan‐Jing; Liu, Jia; Mitchell-Olds, Thomas; Xing, Yao‐Wu

doi:10.1016/j.pld.2022.02.002

Cited by 5 publications

(4 citation statements)

References 90 publications

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“…Ploidy level for sample with genomic sequence was estimated using nQuire (Weiß et al., 2018). For samples without enough well‐reserved DNA, sequences from four plastid markers ( psbC ‐ trnS , trnG ‐ trnM , trnL and trnL ‐ trnF ), 12 low‐copy nuclear loci ( ACO 1, CHS , CIP 7, CRD 1, FTSZ 1‐1, HY 4, MCM 5, MLH 1, SMC 2, SYP 61, AT3G50910 and AT5G52810) and ITS were obtained following our previous study (Han et al., 2022). We cloned and sequenced the 12 low‐copy nuclear loci and ITS for at least one sample of each species, during which sequences of 8–16 clones were gathered for each locus and sample.…”

Section: Methodsmentioning

confidence: 99%

“…We cloned and sequenced the 12 low‐copy nuclear loci and ITS for at least one sample of each species, during which sequences of 8–16 clones were gathered for each locus and sample. Variation from cloned sequences was processed by PURC pipelines using reported methods (Han et al., 2022; Rothfels et al., 2017), with the cloned sequences as input reads for PURC analysis. Ploidy level for each sample was rechecked according to the mean number of PURC‐phased homoeologues across loci (Rothfels et al., 2017).…”

Section: Methodsmentioning

confidence: 99%

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Synergistic polyploidization and long‐distance dispersal enable the global diversification of yellowcress herbs

Han,

Yu,

Zheng

et al. 2023

Global Ecol Biogeogr

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AimLong‐distance dispersal (LDD) plays an important role in shaping the distribution of global biodiversity. Polyploidy could favour invasion and thereby facilitate LDD. However, how and to what extent polyploidy interacts with LDD remain unclear. Here, we test the putative role of polyploidy in the global dispersal of a cosmopolitan genus Rorippa.LocationGlobal.Time PeriodLate Miocene to present.Major Taxa StudiedRorippa Scop., Brassicaceae.MethodsWe traced the biogeographical and speciation history for 17 diploids and 41 polyploids of Rorippa using variation from plastid genomes and multiple nuclear loci. The ploidy role in dispersal rate difference was demonstrated using trait‐dependent biogeographical modelling.ResultsLDD shaped the amphitropical disjunction of Rorippa, during which polyploids showed higher dispersal rates than those of diploids, with 5.6× increase under the best‐fitted model. Five diploids and 21 polyploids were identified as products of transoceanic speciation events. Polyploidy‐involved LDD was more common in terms of polyploidization following LDD than those preceding LDD.Main ConclusionsWe demonstrate that polyploidy would be not only a driver but also a responder of LDD in Rorippa, highlighting a synergistic relationship between them. Our results provide a framework to uncover the biogeographical consequences of polyploidization and the joint roles of polyploidy and LDD in shaping the distribution of biodiversity.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Synergistic polyploidization and long‐distance dispersal enable the global diversification of yellowcress herbs

Han,

Yu,

Zheng

et al. 2023

Global Ecol Biogeogr

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“…Otherwise, the lineage will likely be eliminated by ‘minority cytotype disadvantage’ ( Levin, 1975 ). Recent studies based on global climate data and new analytical methods ( Warren et al., 2008 ; Wang et al., 2022 ) have shown that the niches of allopolyploids differ from at least one of their progenitors ( López-Alvarez et al., 2015 ; Ficetola and Stöck, 2016 ; Marchant et al., 2016 ; Akiyama et al., 2021 ; Han et al., 2022 ). Nevertheless, other studies have shown that allopolyploids occupy intermediate or non-divergent ecological niches compared to their progenitors (e.g., Casazza et al., 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Allopolyploid origin and niche expansion of Rhodiola integrifolia (Crassulaceae)

Zhong¹,

Li²,

Zhang³

2023

Plant Diversity

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“…Its south is one of China's 35 priority biodiversity conservation areas. The enormous number of endemic species and their abundance of taxa are noteworthy (Han et al, 2022;Wang et al, 2012;Yu et al, 2020;Zhang et al, 2021). Taxonomically, the orchid family (Orchidaceae Juss.)…”

Section: Introductionmentioning

confidence: 99%

Solving the “species bias” to facilitate orchid multi-scenario conservation planning in the south of the Hengduan Mountains

Wang

Tang

Peng

et al. 2023

Preprint

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detailed analyses of specific taxonomic groups at finer geographic scales to identify and prioritize biodiversity hotspots is a prominent method for optimizing conservation efforts, especially for the uneven species richness. The ecological suitability prediction and analysis of representative species provide vital references for conservation planning. Yet, in predicting suitability for multi-species or groups by species distribution models (SDMs) under a highly heterogeneous environment, species bias may occur cause of the unequal protection status and the spatial autocorrelation processing of occurrence data. For this, diversity, and protection hotspots were mapped in the south of the Hengduan Mountains, a significant site for global biodiversity. Specifically, creating a network of 1 km2 grid cells spanning the region, counting the orchid species, quantifying the protection value, and classifying attributes by the Jenks. And 5 km and 10 m buffer zone for each grid containing attributes compose the diversity and protection hotspot layers and were compared with the orchid suitability map modeled by SDMs. Results showed that even though there were extensively suitable habitats for orchids, the model results cannot completely cover whole the diversity and protection hotspots at any scale. Based on the map attributes, multi-scenario conservation planning was proposed. This study identifies the critical areas of suitability, diversity, and protection of orchids in this region, providing a meaningful reference for regional biodiversity conservation planning and producing a migrated method for biogeographic analysis in global biodiversity hotspots not just orchids. Besides, the results will supply crucial regional information for global biodiversity conservation.

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Adaptive responses drive the success of polyploid yellowcresses (Rorippa, Brassicaceae) in the Hengduan Mountains, a temperate biodiversity hotspot

Cited by 5 publications

References 90 publications

Synergistic polyploidization and long‐distance dispersal enable the global diversification of yellowcress herbs

Synergistic polyploidization and long‐distance dispersal enable the global diversification of yellowcress herbs

Allopolyploid origin and niche expansion of Rhodiola integrifolia (Crassulaceae)

Solving the “species bias” to facilitate orchid multi-scenario conservation planning in the south of the Hengduan Mountains

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