<i>Liquidambar maomingensis</i> sp. nov. (Altingiaceae) from the late Eocene of South China

Маслова, Н. П.; Kodrul, Тatiana M.; Song, Yunsheng; Volkova, Lyudmila D.; Jin, Jianhua

doi:10.3732/ajb.1500019

Cited by 19 publications

(28 citation statements)

References 35 publications

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“…Hainan Island is also an important distribution area for Liquidambar and Altingia [34]. Therefore, we speculate that Hainan Island, and even Southeast Asia, are likely to be important origin centers of S. cathayensis [62,63]. In the last glacial maximum, the Wuyi, Nanling, Hengshan, and Central Taiwan Mountain ranges were the most suitable habitats.…”

Section: Changes In Potential Distribution Areasmentioning

confidence: 87%

Distribution Pattern of Endangered Plant Semiliquidambar cathayensis (Hamamelidaceae) in Response to Climate Change after the Last Interglacial Period

Zhao

Zhang

et al. 2020

Forests

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Semiliquidambar cathayensis is a special and endangered plant in China, used for traditional Chinese medicine and in landscape applications. Predicting the impact of climate change on the distribution of S. cathayensis is crucial for its protection and the sustainable use of resources. We used the maximum entropy (MaxEnt) model optimized by the ENMeval data packet to analyze the potential geographic distribution changes of S. cathayensis in 12 provinces of Southern China for the different periods since the last interglacial period (LIG, 120–140 ka). Considering the potential geographic distribution changes in the province, and based on the two climate scenarios of Representative Concentration Pathways (RCP) 2.6 and RCP 8.5, the distribution range of S. cathayensis was analyzed and we predicted the range for the 2050s (average for 2041–2060) and 2070s (average for 2061–2080). The area under AUC (Area under the receiver operating characteristic (ROC) curve) is 0.9388 under these parameters, which indicates that the model is very accurate. We speculate that the glacial period refugia were the Nanling and Wuyi Mountains for S. cathayensis, and central and Western Fujian and Taiwan are likely to be the future climate refugia. In the mid-Holocene (MH, 6 ka), the growth habitat was 32.41% larger than the modern habitat; in the 2050s and 2070s (except RCP2.6–2070s), the growth habitat will shrink to varying degrees, so efforts to support its in situ and ex situ conservation are urgently needed. The jackknife test showed that the main factors affecting the geographical distribution of S. cathayensis were annual precipitation, precipitation of the wettest month, and precipitation of the driest month. The annual precipitation may be the key factor restricting the northward distribution of S. cathayensis. In general, the centroid of the distribution of S. cathayensis will move northward. The centroid of the adaptive habitats will move northward with the highest degree of climate abnormality. We think that Hainan Island is the most likely origin of S. cathayensis. These findings provide a theoretical basis for the establishment of genetic resources protection measures, the construction of core germplasm resources, and the study of the formation and evolution of Hamamelidaceae.

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Section: Changes In Potential Distribution Areasmentioning

confidence: 87%

Distribution Pattern of Endangered Plant Semiliquidambar cathayensis (Hamamelidaceae) in Response to Climate Change after the Last Interglacial Period

Zhao

Zhang

et al. 2020

Forests

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“…The differences in the L/W ratio in shade and sun leaves, together with a comparison of other morphological and epidermal characteristics used in paleobotanical studies for the distinction of shade/sun morphotypes in fossil leaves (Maslova and Shilin, 2011;Maslova et al, 2015Maslova et al, , 2018, will be of great importance in future research.…”

Section: L/w Ratiomentioning

confidence: 99%

“…Our aims were to (1) investigate and document morphological and epidermal features in sun and shade leaves of two species of evergreen oaks, Q. bambusifolia Hance and Q. myrsinifolia Blume, using light microscopy and scanning electron microscopy; (2) focus on morphological and epidermal features readily preserved in the fossil record, and so crucial for paleobotanists needing to distinguish sun and shade morphotypes; and (3) compare results with those obtained earlier for Liquidambar L. (Maslova et al, 2015(Maslova et al, , 2018(Maslova et al, , 2019 and Platanus L. (Maslova et al, 2008a(Maslova et al, , 2008b to understand common useful criteria for sun/shade leaf identification, applicable to both modern and fossil leaves. The results of this study will be applied to Quercus leaves from the upper Eocene Huangniuling Formation, Maoming Basin, South China, and will be published in a separate paper.…”

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confidence: 99%

“…Within the crowns of large mature trees a range of abiotic factors create a microclimate gradient from the crown periphery to the interior (e.g., Zalensky, 1904;Givnish, 1988) that gives rise to a variety of leaf morphological and anatomical adaptations (e.g., Kürschner, 1997;Balsamo et al, 2003;Sun et al, 2003;Herrick et al, 2004;Tsukaya, 2005;Gratani et al, 2006;Rozendaal et al, 2006;Sack et al, 2006;Kouwenberg et al, 2007;Maslova et al, 2008aMaslova et al, , 2008bMaslova et al, , 2018Wei et al, 2009;Wu et al, 2009;Xu et al, 2009;Rubio de Casas et al, 2011;Xiao et al, 2011Xiao et al, , 2013Witham et al, 2014). Previous studies of sun and shade leaves in modern woody plants have shown the practical potential of using morphological features to distinguish sun and shade forms in fossil leaves (Maslova and Shilin, 2011;Maslova et al, 2015Maslova et al, , 2018.…”

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confidence: 99%

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Variations in morphological and epidermal features of shade and sun leaves of two species: Quercus bambusifolia and Q. myrsinifolia

Маслова

Karasev

et al. 2021

American J of Botany

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Premise: Microclimatic differences between the periphery and the interior of tree crowns result in a variety of adaptive leaf macromorphological and anatomical features. Our research was designed to reveal criteria for sun/shade leaf identification in two species of evergreen oaks, applicable to both modern and fossil leaves. We compared our results with those in other species similarly studied. Methods: For both Quercus bambusifolia and Q. myrsinifolia (section Cyclobalanopsis), leaves from single mature trees with well-developed crowns were collected in the South China Botanical Garden, Guangzhou, China. We focus on leaf characters often preserved in fossil material. SVGm software was used for macromorphological measurement. Quantitative analyses were performed and box plots generated using R software with IDE Rstudio. Leaf cuticles were prepared using traditional botanical techniques. Results: Principal characters for distinguishing shade and sun leaves in the studied oaks were identified as leaf lamina length to width ratio (L/W), and the degree of development of venation networks. For Q. myrsinifolia, shade and sun leaves differ in tooth morphology and the ratio of toothed lamina length to overall lamina length. The main epidermal characters are ordinary cell size and anticlinal wall outlines. For both species, plasticity within shade leaves exceeds that of sun leaves. Conclusions: Morphological responses to sun and shade in the examined oaks are similar to those in other plant genera, pointing to useful generalizations for recognizing common foliar polymorphisms that must be taken into account when determining the taxonomic position of both modern and fossil plants.

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“…Paleocene fossils include pollen records from southern Europe, the Rocky Mountains (Muller, 1981), northeastern and northwestern China (Liu, 1983;Wang et al, 1990;Song et al, 1999), and Central Asia (Kuprianova, 1960). Eocene fossils representing Altingiaceae are found in Western Europe and Southern Asia (Reid and Chandler, 1933;Chandler, 1961;Mai, 1968;Maslova et al, 2015Maslova et al, , 2019. Remarkably, the pollen record suggests that Altingiaceae had spread into Mesoamerica by the Oligocene (Graham and Jarzen, 1969) and, by the Miocene, the family was widely distributed in the Northern Hemisphere with a record that includes leaves, infructescences, pollen grains, and wood (Huzioka and Uemura, 1979;Ferguson, 1989;Mai, 1995;Manchester, 1999;Song et al, 1999;Pigg et al, 2004;Taylor et al, 2009;Oskolski et al, 2012;Maslova et al, 2015;Dong et al, 2018).…”

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confidence: 99%

Paleoaltingia gen. nov., a new genus of Altingiaceae from the Late Cretaceous of New Jersey

Lai

Gandolfo

Crepet

et al. 2021

American J of Botany

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As one of the most highly diverse floras of Late Cretaceous worldwide, the New Jersey flora (~90 Ma) is characterized by its threedimensional charcoalifed fossils, which expand our understanding of the rapid radiation and paleobiogeography in early angiosperms (Crepet et al., 2018). The emergence of Altingiaceae from the same deposits provides direct evidence of early floral structures, and implications in biogeographic inferences. Traditionally, the family Hamamelidaceae included three extant genera, Liquidambar L.,

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Liquidambar maomingensis sp. nov. (Altingiaceae) from the late Eocene of South China

Cited by 19 publications

References 35 publications

Distribution Pattern of Endangered Plant Semiliquidambar cathayensis (Hamamelidaceae) in Response to Climate Change after the Last Interglacial Period

Distribution Pattern of Endangered Plant Semiliquidambar cathayensis (Hamamelidaceae) in Response to Climate Change after the Last Interglacial Period

Variations in morphological and epidermal features of shade and sun leaves of two species: Quercus bambusifolia and Q. myrsinifolia

Paleoaltingia gen. nov., a new genus of Altingiaceae from the Late Cretaceous of New Jersey

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