Genetic diversity and structure of Lilium pumilum DC. in southeast of Qinghai–Tibet plateau

Tang, Nan; Mo, Guochao; Tuyl, J.M. van; Arens, Paul; Li, Jianjun; Dao-cheng, Tang

doi:10.1007/s00606-013-0973-9

Cited by 16 publications

(19 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Genetic diversity within a taxon is considered to be critical for maintaining the long-term survival and continued evolutionary potential of populations or species [1]. Habitat modification and fragmentation as a consequence of human activities and global environmental change are serious problems affecting the preservation of biodiversity in many terrestrial ecosystems and a clear threat to survival of many species.…”

Section: Introductionmentioning

confidence: 99%

Genetic Diversity and Population Divergence of a Rare, Endemic Grass (Elymus breviaristatus) in the Southeastern Qinghai-Tibetan Plateau

Liu

Xiong

et al. 2019

Sustainability

View full text Add to dashboard Cite

Elymus breviaristatus is a grass species only distributed in the southeast of Qinghai-Tibetan Plateau (QTP), which has suffered from serious habitat fragmentation. Therefore, understanding patterns of genetic diversity within and among natural E. breviaristatus populations could provide insight for future conservation strategies. In this study, sequence-related amplified polymorphism markers were employed to investigate the genetic diversity and hierarchical structure of seven E. breviaristatus populations from QTP, China. Multiple measures of genetic diversity indicated that there is low to moderate genetic variation within E. breviaristatus populations, consistent with its presumed mating system. In spite of its rarity, E. breviaristatus presented high genetic diversity that was equivalent to or even higher than that of widespread species. Bayesian clustering approaches, along with clustering analysis and principal coordinate analysis partitioned the studied populations of E. breviaristatus into five genetic clusters. Differentiation coefficients (Fst, GST, etc.) and AMOVA analysis revealed considerable genetic divergence among different populations. BARRIER analyses indicated that there were two potential barriers to gene flow among the E. breviaristatus populations. Despite these patterns of differentiation, genetic distances between populations were independent of geographic distances (r = 0.2197, p = 0.2534), indicating little isolation by distance. Moreover, despite detecting a common outlier by two methods, bioclimatic factors (altitude, annual mean temperature, and annual mean precipitation) were not related to diversity parameters, indicating little evidence for isolation caused by the environment. These patterns of diversity within and between populations are used to propose a conservation strategy for E. breviaristatus.

show abstract

Section: Introductionmentioning

confidence: 99%

Genetic Diversity and Population Divergence of a Rare, Endemic Grass (Elymus breviaristatus) in the Southeastern Qinghai-Tibetan Plateau

Liu

Xiong

et al. 2019

Sustainability

View full text Add to dashboard Cite

show abstract

“…Since bulb scales are tightly appressed to the bulb, propagation by scales is impractical. 1) Moreover, populations of L. pumilum may have already disappeared due to overgrazing, uncontrolled overexploitation by humans or the effects of climate change. 4) L. pumilum plants cannot be found at any location below 2000 m at present, although they used to be distributed at altitudes ranging from 1900 to 3800 m in 1980.…”

mentioning

confidence: 99%

“…4) L. pumilum plants cannot be found at any location below 2000 m at present, although they used to be distributed at altitudes ranging from 1900 to 3800 m in 1980. 1) Therefore, an in vitro protocol that can effectively increase the stock or biomass of L. pumilum is urgently needed.…”

mentioning

confidence: 99%

Somatic embryogenesis and direct as well as indirect organogenesis inLilium pumilumDC. Fisch., an endangered ornamental and medicinal plant

Zhang

Gai

et al. 2016

Bioscience, Biotechnology, and Biochemistry

View full text Add to dashboard Cite

Somatic embryogenesis and organogenesis in Lilium pumilum were successfully regulated by picloram, α-naphthaleneacetic acid (NAA), and 6-benzyladenine (BA). In organogenesis, the highest shoot regeneration frequency (92.5%) was obtained directly from bulb scales on Murashige and Skoog (MS) medium containing 2.0 mg L(-1) BA and 0.2 mg L(-1) NAA, while organogenic callus (OC) formed from leaves on MS medium supplemented with 1.0 mg L(-1) BA and 0.5 mg L(-1) NAA. Following subculture, 76.7% of OC regenerated shoots. In somatic embryogenesis, the combination of picloram and NAA increased the amount of embryogenic callus (EC) that formed with a maximum on 90.7% of all explants which formed 11 somatic embryos (SEs) per explant. Differences between EC and OC in cellular morphology and cell differentiation fate were easily observed. SEs initially formed via an exogenous or an endogenous origin. The appearance of a protoderm in heart-shaped SE and the bipolar shoot-root development in oval-shaped SE indicated true somatic embryogenesis. This protocol provides a new and detailed regulation and histological examination of regeneration pattern in L. pumilum.

show abstract

“…Bao et al (2017) found that in Prunus mira (Koehne), geographic distance is not a crucial factor for genetic composition in small areas, and an altitude gradient can have more significant effects on population structure than geographical distance. In addition, Tang et al (2014), observed in Lilium pumilum DC that altitude, mean annual temperature, and mean annual rainfall contribute 9.5, 11.5, and 14.0% of the total variance among the populations, respectively.…”

Section: Implications Of Altitude For Conservation and Breeding Of Fementioning

confidence: 97%

Evaluation of the genetic diversity in the feijoa accessions maintained at Santa Catarina, Brazil

et al. 2020

View full text Add to dashboard Cite

Feijoa [Acca sellowaiana (O. Berg) Burret], also known as pineapple guava or goiabeira‐serrana, is a species of the Myrtaceae family native to southern Brazil and Uruguay. The genetic diversity of feijoa's natural populations has been studied and is relatively well‐documented; however, the genetic diversity of feijoa accessions in the largest active germplasm bank (AGB) in Brazil, and is still poorly documented. Characterizing and conserving pineapple guava accessions present in the AGB is essential for developing breeding programs and conserving the diversity of the species. Thus, the objective of this study was to characterize the genetic diversity of all accessions using eight microsatellite markers. The AGB collection includes accessions from 26 municipalities in Brazil, New Zealand, the United States, Israel, and Uruguay; selected clones, and selections of directed crossings, totaling 313 accessions. Genotyping 309 of these accessions with eight microsatellite markers revealed 119 alleles. Polymorphism information content (PIC) values varied between .466 (ASE40) and .890 (ASE34) with an overall mean of .718. This genotyping confirms the existence of two main types or biotypes in the species, denoted as the Uruguay type and Brazil type. Also, a significant proportion of the feijoa diversity, which is absent from the AGB‐Feijoa collection, is present in germplasm maintained by indigenous people, quilombola communities, federal conservation units, participatory genetic breeding, and areas of natural occurrence, thus reinforcing the need to introduce new accessions into São Joaquim's AGB‐Feijoa.

show abstract

Genetic diversity and structure of Lilium pumilum DC. in southeast of Qinghai–Tibet plateau

Cited by 16 publications

References 47 publications

Genetic Diversity and Population Divergence of a Rare, Endemic Grass (Elymus breviaristatus) in the Southeastern Qinghai-Tibetan Plateau

Genetic Diversity and Population Divergence of a Rare, Endemic Grass (Elymus breviaristatus) in the Southeastern Qinghai-Tibetan Plateau

Somatic embryogenesis and direct as well as indirect organogenesis inLilium pumilumDC. Fisch., an endangered ornamental and medicinal plant

Evaluation of the genetic diversity in the feijoa accessions maintained at Santa Catarina, Brazil

Contact Info

Product

Resources

About