Genome-wide discovery of microsatellite markers and, population genetic diversity inferences revealed high anthropogenic pressure on endemic populations of Trillium govanianum

Dhyani, Praveen; Sharma, Balraj; Singh, Pradeep; Masand, Mamta; Seth, Romit; Sharma, Ram Kumar

doi:10.1016/j.indcrop.2020.112698

Cited by 17 publications

(7 citation statements)

References 52 publications

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“…based on visual/physical observations. Besides, the information about the dynamics of a population or threats faced by the plants in areas, where field surveys could not be conducted (i.e., extent areas of target species outside Ladakh and Kashmir valley), was gathered from the literature surveys, including research papers (Dhyani et al, 2020;Lal et al, 2020). The field survey data were supplemented with records of the target plant species obtained from various sources including the on-line sources GBIF database (http://www.gbif.org), ENVIS (Environmental Information System), Centre on Medicinal Plants (http://envis.frlht.…”

Section: Data Collectionmentioning

confidence: 99%

“…The field survey data were supplemented with records of the target plant species obtained from various sources including the on-line sources GBIF database (http://www.gbif.org), ENVIS (Environmental Information System), Centre on Medicinal Plants (http://envis.frlht. org/frlhtenvis.nic.in) and herbarium records from CAL, BSD, DD and KASH, published research articles including Dhyani et al (2020), Lal et al (2020). The occurrence data from all sources were then used to calculate the parameters for an assessment of the threat status of the target plant species.…”

Section: Data Collectionmentioning

confidence: 99%

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Threat status of three important medicinal Himalayan plant species and conservation implications

Sofi¹,

Verma²,

Ganie³

et al. 2022

Nat. Conserv. Res.

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A lack of precise information about the threat status of species hampers their effective conservation. The Target 2 of the Convention on Biological Diversity calls for evaluation of threat status at global, national and regional levels to identify plant species of urgent conservation concern. Here we have empirically assessed the threat status of three valuable medicinal plant species (Trillium govanianum, Rheum tibeticum, and Arnebia euchroma) through extensive field studies and herbarium consultations in Kashmir Himalaya and cold desert region of Trans-Himalayan Ladakh. In accordance with the IUCN Red List categories and criteria, each of the three target species turned out to be Near Threatened (NT). According to the NatureServe Conservation Status Assessment, each of these species faces the overall threat impact of «High» to «Very high». We found that the anthropogenic threats emanating from unplanned economic development, road construction and other infrastructure related projects contribute to a fast decline in natural populations of these three species. Keeping in view the value of these species, on the one hand, and growing threats to their survival in the wild, on the other one, we call for urgent conservation strategies in the vulnerable Himalayan habitats for regional socio-economic development.

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Section: Data Collectionmentioning

confidence: 99%

Section: Data Collectionmentioning

confidence: 99%

Threat status of three important medicinal Himalayan plant species and conservation implications

Sofi¹,

Verma²,

Ganie³

et al. 2022

Nat. Conserv. Res.

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show abstract

“…Medicinal plants have been used as important sources of medicine to prevent and treat many human diseases in traditional cultures all over the world for thousands of years [ 1 , 2 ]. However, given the dramatically increasing demand for plant-derived medicine, many medicinal plants are under over-exploitation, increasing their risk of extinction in the wild [ 3 , 4 ]. Generally, wild resource contains great genetic variations and beneficial genes before domestication and artificial selection, providing a reservoir of genetic variation for exploiting in breeding efforts [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Limited genetic diversity and high differentiation in Angelica dahurica resulted from domestication: insights to breeding and conservation

et al. 2022

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Background Angelica dahurica belongs to the Apiaceae family, whose dry root is a famous traditional Chinese medicine named as “Bai zhi”. There are two cultivars (A. dahurica cv. ‘Hangbaizhi’ and A. dahurica cv. ‘Qibaizhi’), which have been domesticated for thousands of years. Long term artificial selection has led to great changes in root phenotypes of the two cultivars, and also decreased their adaptability to environment. We proposed hypothesis that the cultivars may have lost some of the genetic diversity found in the wild species and may be highly differentiated from the latter during the domestication process. However, few studies have been carried out on how domestication affected the genetic variation of this species. Here, we accessed the levels of genetic variation and differentiation within and between wild A. dahurica populations and two cultivars using 12 microsatellite markers. Results The results revealed that the genetic diversity of the cultivars was much lower than that of wild A. dahurica, and A. dahurica cv. ‘Qibaizhi’ had lower genetic diversity compared to A. dahurica cv. ‘Hangbaizhi’. AMOVA analysis showed significant genetic differentiation between the wild and cultivated A. dahurica populations, and between A. dahurica cv. ‘Hangbaizhi’ and A. dahurica cv. ‘Qibaizhi’. Results from Bayesian, UPGMA, NJ and PcoA clustering analysis indicated that all 15 populations were assigned to two genetic clusters corresponding to the wild and cultivated populations. Bayesian clustering analysis further divided the cultivated populations into two sub-clusters corresponding to the two cultivars. Conclusions Our study suggests that the domestication process is likely the major factor resulting in the loss of genetic diversity in cultivated A. dahurica populations and in significant genetic differentiation from the wild populations due to founder effect and/or artificially directional selections. This large-scale analysis of population genetics could provide valuable information for genetic resources conservation and breeding programs of Angelica dahurica.

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“…The distributional range of our target species (T. govanianum) is restricted to the areas which are part of Himalayan biodiversity hotspot (Vidyarthi et al 2013). The narrow geographic range and increasing commercial demand (Dhyani et al 2020), over exploitation (Ganie et al 2019), unmanaged harvesting (Chauhan et al 2017), make this species quite vulnerable to other distrurbances emnating from land-use transformations and climate change that further push it towards high altitudes thereby further narrowing its narrow distribution range (Telwala et al 2013;Chettri et al 2018a, b). Land-use change has negative influence on biodiversity (Ordonez et al 2014) by altering the ecosystem services, climate and carbon cycle (Li et al 2019) thereby intensifying the surge of invasion by alien species (Helmus et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Predicting distribution and range dynamics of Trillium govanianum under climate change and growing human footprint for targeted conservation

Sofi

Verma

Charles³

et al. 2021

Plant Ecol

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Climate change, land-use changes and other anthropogenic pressures are globally the major drivers of biodiversity decline with profound implications, especially for the fragile Himalayan ecosystems. These drivers, if factored into the biodiversity conservation models, significantly improve their reliability and help a great deal prioritise habitats for better management. Here we focussed on an important medicinal plant species (Trillium govanianum), endemic to Himalayan region that is beset with the twin challenge of climate change and growing human footprint. We predicted the current and future projection of the distribution range of this species using SDM tool 'MaxEnt' supplemented with 'Zonation' software and 'human pressure index'. Decrease in the potential geographic range of T. govanianum, with a narrow room for conservation due to anthropogenic pressures in the predicted suitable habitats, was clearly revealed from our results. We identified the precise zones within the predicted suitable habitats under the future climatic scenarios (2050 and 2070) for priority conservation to endure the impact of climate change and growing human pressures. These results hold considerable promise in designing the effective conservation strategies for the target species. In the context of post 2020 biodiversity outlook, we advocate augmenting the species distribution models with human footprint index, zonation analysis and the climate change scenarios, to realistically meet the desired conservation targets.

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Genome-wide discovery of microsatellite markers and, population genetic diversity inferences revealed high anthropogenic pressure on endemic populations of Trillium govanianum

Cited by 17 publications

References 52 publications

Threat status of three important medicinal Himalayan plant species and conservation implications

Threat status of three important medicinal Himalayan plant species and conservation implications

Limited genetic diversity and high differentiation in Angelica dahurica resulted from domestication: insights to breeding and conservation

Predicting distribution and range dynamics of Trillium govanianum under climate change and growing human footprint for targeted conservation

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