scholarly journals Genetic variation of isolated Picea balfouriana populations from the southeast of the Qinghai-Tibet Plateau

2009 ◽  
Vol 66 (6) ◽  
pp. 607-607 ◽  
Author(s):  
Zhuoxuan Lu ◽  
Yuhua Wang ◽  
Xiaolu Zhang ◽  
Helena Korpelainen ◽  
Chunyang Li
Keyword(s):  
Genetic Variation ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau

Diversity and breeding potential of poplar species in China

2001 ◽  
Vol 77 (2) ◽  
pp. 227-237 ◽  
Author(s):  
Horst Weisgerber ◽  
Yifan Han
Keyword(s):  
Genetic Variation ◽  
Production Systems ◽  
Growth Characteristics ◽  
Tibet Plateau ◽  
Regeneration Ability ◽  
Poplar Breeding ◽  
Species Characteristics ◽  
Adaptation Processes ◽  
Qinghai Tibet Plateau ◽  
Near Future

The genus Populus is composed of many species with an impressive variety of growth characteristics. Nevertheless, this abundant natural offering has been only partially utilized to date with the objective of promoting poplar breeding and cultivation. Following an old tradition, more or less inflexible production systems are mainly keyed to a few high-yielding P. x euramericana and P. x interamericana clones in most countries. Consequently, considerable economic failures have to be accepted repeatedly as a result of serious calamities.China ranks among the countries characterized by an exceptionally multifarious indigenous flora. Based on ample genetic variation, poplar species were able to settle in divergent habitats and to conserve the ability to survive and reproduce over long periods owing to adaptation processes. The diversity is concentrated, above all, in the subtropical mountain regions of southwest China. Comprehensive studies of the genus populus in the southern and eastern mountain chains of the Qinghai-Tibet Plateau turned out to be particularly impressive; 3 sections, 17 species and 15 varieties have been recorded and taxonomically classified there. They grow at altitudes between 1500 m and 4300 m above sea level. Many of these poplar sources are notable for their remarkable site adaptation even in harsh conditions and also for their fast and vigorous growth.Species expected to be suitable for international breeding and cultivation objectives in the near future are presented in a general way. The necessarily subjective selection is based on the state of available knowledge mainly about site requirements, environmental importance, growth characteristics, regeneration ability, silvicultural behaviour, yield estimation and wood utilization. In particular, the following species are characterized in the paper in an abridged fashion: P. cathayana, P. davidiana, P. euthratica, P. simonii, P. szechuanica, P. ussuriensis and P. yunnanensis.The potential of poplars in China is considered to be instrumental in expanding and stimulating poplar breeding activities worldwide. Measures to be specified in the paper are considered important and could be implemented on the basis of a close and confident co-operation with Chinese colleagues and institutes relevant to the subject and under the umbrella of the International Poplar Commission. Key words: poplar, tradition, calamities, China, genetic variation, promising species, characteristics, breeding priorities

RAPD Profiling in Detecting Genetic Variation in Endemic Coelonema (Brassicaceae) of Qinghai-Tibet Plateau of China

2005 ◽  
Vol 43 (3-4) ◽  
pp. 189-201 ◽  
Author(s):  
Shilong Chen ◽  
Tao Xia ◽  
Shengyun Chen ◽  
Yijun Zhou
Keyword(s):  
Genetic Variation ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau

Genetic variation and phylogenetic relationships of the ectomycorrhizal Floccularia luteovirens on the Qinghai-Tibet Plateau

2017 ◽  
Vol 55 (8) ◽  
pp. 600-606 ◽  
Author(s):  
Rui Xing ◽  
Qing-bo Gao ◽  
Fa-qi Zhang ◽  
Peng-cheng Fu ◽  
Jiu-li Wang ◽  
...  
Keyword(s):  
Genetic Variation ◽  
Phylogenetic Relationships ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau

Patterns of Genetic Variation in Swertia przewalskii, an Endangered Endemic Species of the Qinghai-Tibet Plateau

2007 ◽  
Vol 45 (1-2) ◽  
pp. 33-50 ◽  
Author(s):  
Defang Zhang ◽  
Shilong Chen ◽  
Shengyun Chen ◽  
Dejun Zhang ◽  
Qingbo Gao
Keyword(s):  
Genetic Variation ◽  
Endemic Species ◽  
Tibet Plateau ◽  
Qinghai Tibet Plateau

Legacy effect of warming on the heterotrophic respiration of alpine grassland on the Qinghai-Tibet Plateau

2021 ◽  
Vol 166 ◽  
pp. 104093
Author(s):  
Fei Peng ◽  
Wenjuan Zhang ◽  
Chimin Lai ◽  
Chengyang Li ◽  
Quangang You ◽  
...  
Keyword(s):  
Heterotrophic Respiration ◽  
Alpine Grassland ◽  
Tibet Plateau ◽  
Legacy Effect ◽  
Qinghai Tibet Plateau

scholarly journals Demographic history and genomic response to environmental changes in a rapid radiation of wild rats

2021 ◽  
Author(s):  
Deyan Ge ◽  
Anderson Feijó ◽  
Zhixin Wen ◽  
Alexei V Abramov ◽  
Liang Lu ◽  
...  
Keyword(s):  
Environmental Changes ◽  
Demographic History ◽  
Terrestrial Ecosystems ◽  
Tibet Plateau ◽  
Global Changes ◽  
Rapid Radiation ◽  
Protein Functions ◽  
Wild Rats ◽  
Qinghai Tibet Plateau ◽  
Genomic Response

Abstract For organisms to survive and prosper in a harsh environment, particularly under rapid climate change, poses tremendous challenges. Recent studies have highlighted the continued loss of megafauna in terrestrial ecosystems and the subsequent surge of small mammals, such as rodents, bats, lagomorphs, and insectivores. However, the ecological partitioning of these animals will likely lead to large variation in their responses to environmental change. In the present study, we investigated the evolutionary history and genetic adaptations of white-bellied rats (Niviventer Marshall, 1976), which are widespread in the natural terrestrial ecosystems in Asia but also known as important zoonotic pathogen vectors and transmitters. The southeastern Qinghai-Tibet Plateau (QHTP) was inferred as the origin center of this genus, with parallel diversification in temperate and tropical niches. Demographic history analyses from mitochondrial and nuclear sequences of Niviventer demonstrated population size increases and range expansion for species in Southeast Asia, and habitat generalists elsewhere. Unexpectedly, population increases were seen in N. eha, which inhabits the highest elevation among Niviventer species. Genome scans of nuclear exons revealed that among the congeneric species, N. eha has the largest number of positively selected genes. Protein functions of these genes are mainly related to olfaction, taste and tumor suppression. Extensive genetic modification presents a major strategy in response to global changes in these alpine species.

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