CAS Chengdu Institute of Biology

Sichuan, China

CAS Chengdu Institute of Biology

Sichuan, China
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Hu J.,CAS Chengdu Institute of Biology
Renewable and Sustainable Energy Reviews | Year: 2017

Under the pressure of growing populations and climate change globally, biofuel crops have motivated accelerating interest in the production of renewable bioenergy to provide a substantial proportion of the future energy supply. Both habitat suitability for cultivation and potential aggravating environmental problems from biofuel crops attract concerns worldwide. Jatropha curcas L. (Jatropha) is acclaimed as a magical biofuel crop with high potential to replace fossil fuels sustainably, as well as a multitude of environmental benefits. However, Jatropha is categorized as an invasive plant with a massive investment in new cultivations on a global scale but without a profound ecological knowledge. Given the ambitious policy target in production, it is urgent to achieve spatially explicit estimates of habitat suitability for increasing cultivation of Jatropha. The opportunities and risks for Jatropha were evaluated under climate change using the minimum and maximum representative concentration pathways (RCP2.6 and RCP8.5) by 2100. The extent of predicted suitable habitats may shrink by more than 45%, regardless of time slices, and the RCPs even considered assuming the most optimistic ability of dispersal. The impacts of climate change vary considerably among continents with the greater habitat loss in the Americas and Oceania than in Asia and Africa, and a high risk of habitat loss at low latitudes. The findings indicate that Jatropha would show a decreasing opportunity for desired energy supply. Due to the complexities of the likely impacts of climate change, this study provides important insights into developing cultivation policies for the utilization of Jatropha within a sustainable biofuel program. © 2017 Elsevier Ltd

Wang S.,University of California at Davis | Wang S.,CAS Chengdu Institute of Biology | Blumwald E.,University of California at Davis
Plant Cell | Year: 2014

Two well-known pathways for the degradation of chloroplast proteins are via autophagy and senescence-associated vacuoles. Here, we describe a third pathway that was activated by senescence- and abiotic stress-induced expression of Arabidopsis thaliana CV (for chloroplast vesiculation). After targeting to the chloroplast, CV destabilized the chloroplast, inducing the formation of vesicles. CV-containing vesicles carrying stromal proteins, envelope membrane proteins, and thylakoid membrane proteins were released from the chloroplasts and mobilized to the vacuole for proteolysis. Overexpression of CV caused chloroplast degradation and premature leaf senescence, whereas silencing CV delayed chloroplast turnover and senescence induced by abiotic stress. Transgenic CV-silenced plants displayed enhanced tolerance to drought, salinity, and oxidative stress. Immunoprecipitation and bimolecular fluorescence complementation assays demonstrated that CV interacted with photosystem II subunit PsbO1 in vivo through a C-terminal domain that is highly conserved in the plant kingdom. Collectively, our work indicated that CV plays a crucial role in stress-induced chloroplast disruption and mediates a third pathway for chloroplast degradation. From a biotechnological perspective, silencing of CV offers a suitable strategy for the generation of transgenic crops with increased tolerance to abiotic stress. © 2014 American Society of Plant Biologists. All rights reserved.

Zhang L.-B.,CAS Chengdu Institute of Biology | Zhang L.-B.,Missouri Botanical Garden
Phytotaxa | Year: 2012

For the Flora of China treatment of the fern genus Polystichum (Dryopteridaceae), the following nine new combinations and three new names are proposed. Two varieties were raised to the species level. In addition, P. kangdingense is validated and Cyrtogonellum caducum, Cyrtomidictyum conjunctum and Polystichum deltodon var. henryi are lectotypified. © 2012 Magnolia Press.

Rosewarne G.M.,CAS Chengdu Institute of Biology
TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik | Year: 2013

Over thirty publications during the last 10 years have identified more than 140 QTLs for stripe rust resistance in wheat. It is likely that many of these QTLs are identical genes that have been spread through plant breeding into diverse backgrounds through phenotypic selection under stripe rust epidemics. Allelism testing can be used to differentiate genes in similar locations but in different genetic backgrounds; however, this is problematic for QTL studies where multiple loci segregate from any one parent. This review utilizes consensus maps to illustrate important genomic regions that have had effects against stripe rust in wheat, and although this methodology cannot distinguish alleles from closely linked genes, it does highlight the extent of genetic diversity for this trait and identifies the most valuable loci and the parents possessing them for utilization in breeding programs. With the advent of cheaper, high throughput genotyping technologies, it is envisioned that there will be many more publications in the near future describing ever more QTLs. This review sets the scene for the coming influx of data and will quickly enable researchers to identify new loci in their given populations.

Zhang L.-B.,CAS Chengdu Institute of Biology | Zhang L.-B.,Missouri Botanical Garden
Phytotaxa | Year: 2012

The fern genus Dryopsis (Dryopteridaceae) is characterized by the presence of multicellular hairs and costal and costular grooves closed near their bases. Following a recent molecular analysis the monophyletic Dryopsis is nested in a paraphyletic Dryopteris and therefore should be viewed as part of an expanded Dryopteris. The current paper treats Dryopsis as a section of D. subg. Erythrovariae because both of these two taxa have bullate scales and importantly Dryopsis has been resolved as sister to D. subg. Erythrovariae sect. Erythrovariae. Twenty-two species are here recognized in D. sect. Dryopsis. Included in this treatment are nine new combinations, names and statuses, and five names are lectotypified. The present study further located and cited types of an additional 37 related names, many of which have been poorly to science. A key and distributional information of every species recognized is given and related nomenclatural issues are discussed. The nine new names, combinations and statuses include Dryopteris sect. Dryopsis, D. dulongensis, D. leiboensis, D. nidus, D. nushanensis, D. submariformis, D. wantsingshanica, D. crassirachis and D. × fauriei. The following five names are lectotypified: Ctenitis silaensis, C. tibetica, Dryopteris aureovestita, D. mariformis, and Polystichum transmorrisonensis. © 2012 Magnolia Press.

Zhao Y.,CAS Chengdu Institute of Biology | Zhou L.,CAS Chengdu Institute of Biology | Tang Z.,CAS Chengdu Institute of Biology
Nature Communications | Year: 2013

RNA detection has become an integral part of current biomedical research. Up to now, the reverse transcription-PCR has been the most practical method to detect mRNA targets. However, RNA detection by reverse transcription-PCR requires sophisticated equipment and it is highly sensitive to contamination with genomic DNA. Here we report a new isothermal reaction to simultaneously amplify and detect RNA, based on cleavage by DNAzyme and signal amplification. Cleavage-based signal amplification of RNA cannot be contaminated by genomic DNA and is suitable for the detection of both mRNA and microRNA targets, with high specificity and sensitivity. Moreover, the detection results can be reported in a colorimetric or real-time fluorometric way for different detection purposes. © 2013 Macmillan Publishers Limited.

Wei W.,University of Chinese Academy of Sciences | Ji J.-X.,CAS Chengdu Institute of Biology
Angewandte Chemie - International Edition | Year: 2011

Direct access: The title reaction has been developed under mild reaction conditions (see scheme; DMSO=dimethyl sulfoxide). This reaction can be effectively scaled up and offers not only a green and attractive approach to β-ketophosphonates, but also a useful example of direct incorporation of an oxygen atom from dioxygen into organic frameworks. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Du F.-T.,CAS Chengdu Institute of Biology | Du F.-T.,University of Chinese Academy of Sciences | Ji J.-X.,CAS Chengdu Institute of Biology
Chemical Science | Year: 2012

A novel and efficient copper-catalyzed direct oxidative synthesis of α-ketoamides from aryl methyl ketones, amines, and molecular oxygen has been developed under mild and neat conditions. 18O labeling experiments revealed that both oxygen atoms of the α-ketoamides derived from molecular oxygen. © 2012 The Royal Society of Chemistry.

Hu J.,CAS Chengdu Institute of Biology | Liu Y.,Sun Yat Sen University
PLoS ONE | Year: 2014

It remains a challenge to identify the geographical patterns and underlying environmental associations of species with unique ecological niches and distinct behaviors. This in turn hinders our understanding of the ecology as well as effective conservation management of threatened species. The white-eared night heron (Gorsachius magnificus) is a non-migratory nocturnal bird species that has a patchy distribution in the mountainous forests of East Asia. It is currently categorized as "Endangered" on the IUCN Red List, primarily due to its restricted range and fragmented habitat. To improve our knowledge of the biogeography and conservation of this species, we modeled the geographical pattern of its suitable habitat and evaluated the potential impacts of climate change using ecological niche modeling with a maximum entropy approach implemented in Maxent. Our results indicated that the amount of suitable habitat in all of East Asia was about 130 000 km2, which can be spatially subdivided into several mountain ranges in southern and southwestern China and northern Vietnam. The extent of suitable habitat range may shrink by more than 35% under a predicted changing climate when assuming the most pessimistic condition of dispersal, while some more suitable habitat would be available if the heron could disperse unrestrainedly. The significant future changes in habitat suitability suggested for Gorsachius magnificus urge caution in any downgrading of Red List status that may be considered. Our results also discern potentially suitable areas for future survey efforts on new populations. Overall, this study demonstrates that ecological niche modeling offers an important tool for evaluating the habitat suitability and potential impacts of climate change on an enigmatic and endangered species based on limited presence data. © 2014 Hu, Liu.

Le Droumaguet C.,University of South Carolina | Wang C.,University of South Carolina | Wang C.,CAS Chengdu Institute of Biology | Wang Q.,University of South Carolina
Chemical Society Reviews | Year: 2010

Fluorogenic Cu(i)-catalyzed alkyne-azide cycloaddition (CuAAC) reactions have emerged as a powerful tool for bioconjugation, materials science, organic synthesis and drug discovery. This review highlights the design of the recent development of fluorogenic CuAAC reactions as well as their applications. © 2010 The Royal Society of Chemistry.

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