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Thakur, U., S. Shashni, N. Thakur, S. K. Rana, and A. Singh. 2022. A review on Paris polyphylla Smith: A vulnerable medicinal plant species of a global significance. Journal of Applied Research on Medicinal and Aromatic Plants: 100447. https://doi.org/10.1016/j.jarmap.2022.100447

Paris polyphylla Smith is an overexploited vulnerable medicinal plant species with its distribution in the Himalayas and Southeast Asian Mountains. Due to its enormous medicinal properties the species is used in different medicine system for the cure of a wide range of aliments. Its anti-microbial, anti-viral, and immune-modulating properties are exploited for the well-being of people across the globe. We reviewed the published literature on various aspects of P. polyphylla including current state of research, ecology, traditional uses, molecular characterization, phytochemical composition, cultivation techniques, economic benefits, trade, threats, and future conservation implications. The species plays an important role in the healthcare of the mountain indigenous communities and have been used to cure a wide range of diseases and ailments. Nearly 100 phytochemicals of medicinal importance have been reported in the species among which steroidal saponins and polyphyllins are the key compounds. Many propagation protocols have been developed for ex-situ cultivation and conservation of the species and cultivation from rhizomes has been suggested as most appropriate technique. Despite the large-scale illegal trade of the species worldwide, conservation and management guidelines are missing in many areas. Thus, in-situ and ex-situ conservation measures are important for sustainable utilization of the species.

Joshi, M. D., and C. Joshi. 2022. Areas of species diversity and endemicity of Nepal. Ecosphere 13. https://doi.org/10.1002/ecs2.3969

In this study, we analyzed the distribution and the spatial pattern of species diversity of vascular plants in Nepal. The aim was to identify and evaluate the occurrence and status of species‐rich areas in Nepal using ecological and environmental drivers. We used 52,973 georeferenced herbarium specimen records, representing 2650 species collected from Nepal. Altogether, 41 environmental variables were used for model development and validation. We used MaxEnt to predict the distribution pattern. All the significant species distribution predictions were then used to develop a species richness and endemism pattern in Nepal. The High Mountain and Himalaya, particularly east and central Nepal, were found to be species diverse and endemically rich areas, whereas western Nepal had lower species richness. We observed that isothermality, slope, rugosity, potential evapotranspiration, precipitation of humid months, temperature annual range, mean diurnal range, and normalized difference in vegetation index of humid months were the most influential environmental and climatic variables. We observed that about 60% of the areas, which had highest richness and endemism values, are still not included in protected areas in Nepal. We quantitatively analyzed the species richness and endemicity patterns of Nepal and were able to identify 19 areas of high species diversity and endemicity, six of which are newly identified.

Li, L., X. Xu, H. Qian, X. Huang, P. Liu, J. B. Landis, Q. Fu, et al. 2022. Elevational patterns of phylogenetic structure of angiosperms in a biodiversity hotspot in eastern Himalaya Y. Qu [ed.],. Diversity and Distributions. https://doi.org/10.1111/ddi.13513

Aims The tropical niche conservatism (TNC) hypothesis and the out of the tropics (OTT) hypothesis propose mechanisms generating patterns of species diversity across warm-to-cold thermal gradients at large spatial scales. These two hypotheses both integrate ecological and biogeography-related evoluti…

Filartiga, A. L., A. Klimeš, J. Altman, M. P. Nobis, A. Crivellaro, F. Schweingruber, and J. Doležal. 2022. Comparative anatomy of leaf petioles in temperate trees and shrubs: the role of plant size, environment and phylogeny. Annals of Botany 129: 567–582. https://doi.org/10.1093/aob/mcac014

Background and Aims Petioles are important plant organs connecting stems with leaf blades and affecting light-harvesting ability of the leaf as well as transport of water, nutrients and biochemical signals. Despite the high diversity in petiole size, shape and anatomy, little information is availabl…

Nevado, B., E. L. Y. Wong, O. G. Osborne, and D. A. Filatov. 2019. Adaptive Evolution Is Common in Rapid Evolutionary Radiations. Current Biology 29: 3081-3086.e5. https://doi.org/10.1016/j.cub.2019.07.059

One of the most long-standing and important mysteries in evolutionary biology is why biological diversity is so unevenly distributed across space and taxonomic lineages. Nowhere is this disparity more evident than in the multitude of rapid evolutionary radiations found on oceanic islands and mountai…