Population ecology and niche modelling of endangered <i>Arnebia euchroma</i> in Himachal Pradesh, India-An approach for conservation

Lal, Madan; Samant, S. S.; Kumar, Rajesh; Sharma, Lipika; Paul, Shiv; Dutt, Sunil; Negi, Deepti; Devi, Kaushalya

doi:10.5958/0975-6892.2020.00013.1

Cited by 9 publications

(4 citation statements)

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“…A. guttata (Inner Mongolia Arnebiae Radix ) mainly occurs in Xizang, Xinjiang, western Gansu, Ningxia, and Inner Mongolia in China. A. euchroma , commonly known as Xinjiang Arnebiae Radix , is an endangered herb ( Kala, 2000 ; Gupta et al, 2014 ) that grows naturally on the slopes and dry patches in cold desert temperate zones of the western Himalayas (Xinjiang, western Xizang) ( Lal et al, 2020 ). A. szechenyi inhabits sunny rocky slopes and sand dune edges; most populations of this species occur in areas surrounding the Tengger Desert in Northwest China ( Fu et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

Phylogenomics and Genetic Diversity of Arnebiae Radix and Its Allies (Arnebia, Boraginaceae) in China

Sun

Wang

et al. 2022

Front. Plant Sci.

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Arnebiae Radix is a traditional medicine with pleiotropic properties that has been used for several 100 years. There are five species of Arnebia in China, and the two species Arnebia euchroma and Arnebia guttata are the source plants of Arnebiae Radix according to the Chinese Pharmacopoeia. Molecular markers that permit species identification and facilitate studies of the genetic diversity and divergence of the wild populations of these two source plants have not yet been developed. Here, we sequenced the chloroplast genomes of 56 samples of five Arnebia species using genome skimming methods. The Arnebia chloroplast genomes exhibited quadripartite structures with lengths from 149,539 and 152,040 bp. Three variable markers (rps16-trnQ, ndhF-rpl32, and ycf1b) were identified, and these markers exhibited more variable sites than universal chloroplast markers. The phylogenetic relationships among the five Arnebia species were completely resolved using the whole chloroplast genome sequences. Arnebia arose during the Oligocene and diversified in the middle Miocene; this coincided with two geological events during the late Oligocene and early Miocene: warming and the progressive uplift of Tianshan and the Himalayas. Our analyses revealed that A. euchroma and A. guttata have high levels of genetic diversity and comprise two and three subclades, respectively. The two clades of A. euchroma exhibited significant genetic differences and diverged at 10.18 Ma in the middle Miocene. Three clades of A. guttata diverged in the Pleistocene. The results provided new insight into evolutionary history of Arnebia species and promoted the conservation and exploitation of A. euchroma and A. guttata.

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Section: Introductionmentioning

confidence: 99%

Phylogenomics and Genetic Diversity of Arnebiae Radix and Its Allies (Arnebia, Boraginaceae) in China

Sun

Wang

et al. 2022

Front. Plant Sci.

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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%

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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“…The restricted distribution pattern of Arnebia euchroma (Royle ex Benth.) I.M.Johnst., in Himalaya is further declining and this species is at risk of disappearing because of habitat deterioration, fragmentation and climate change (Lal et al 2020;Sofi et al 2022a). Therefore, understanding of the meiotic behavior may improve the knowledge about reproduction and inherent bottlenecks of the species.…”

Section: Introductionmentioning

confidence: 99%

Meiotic behavior and its implications on the reproductive success of Arnebia euchroma (Royle ex Benth.) I.M.Johnst. (Boraginaceae), an important medicinal plant of Trans-Himalaya

Sofi,

Verma,

Ganie

et al. 2024

Caryologia

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The present study reports the chromosome number, meiotic behavior and its relation with pollen fertility and seed set of Arnebia euchroma (Royle ex Benth.) I.M.Johnst. The species shows a chromosome count of 2n = 2x = 14. The meiotic abnormalities such as chromatin stickiness, cytomixis, laggard formation, chromosomal bridges, were also observed in the Pollen Mother Cells (PMCs) of the target plant species. The linear model of regression showed a significant reduction of seed set with increasing meiotic abnormality and correlation analysis highlighted positive relationship between pollen viability and seed set. Meiotic abnormalities within the species hinder its reproductive process, causing a decline in reproductive efficiency. This study highlights the importance of addressing these intrinsic factors in future conservation programs to prevent a decline in the species population in nature.

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Population ecology and niche modelling of endangered Arnebia euchroma in Himachal Pradesh, India-An approach for conservation

Cited by 9 publications

References 0 publications

Phylogenomics and Genetic Diversity of Arnebiae Radix and Its Allies (Arnebia, Boraginaceae) in China

Phylogenomics and Genetic Diversity of Arnebiae Radix and Its Allies (Arnebia, Boraginaceae) in China

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

Meiotic behavior and its implications on the reproductive success of Arnebia euchroma (Royle ex Benth.) I.M.Johnst. (Boraginaceae), an important medicinal plant of Trans-Himalaya

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