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Article ; Online: Production of alarm pheromone starts at embryo stage and is modulated by rearing conditions and farnesyl diphosphate synthase genes in the bird cherry-oat aphid

Sun, C-X / Li, Z-X

2019 Volume 109, Issue 6, Page(s) 821–830

Abstract: The major component of aphid alarm pheromone is (E)-β-farnesene (EβF), but the molecular mechanisms of EβF synthesis are poorly understood. Here we established a biological model to study the modulation of EβF synthesis in the bird cherry-oat aphid ... ...

Abstract	The major component of aphid alarm pheromone is (E)-β-farnesene (EβF), but the molecular mechanisms of EβF synthesis are poorly understood. Here we established a biological model to study the modulation of EβF synthesis in the bird cherry-oat aphid Rhopalosiphum padi by using quantitative polymerase chain reaction, gas chromatography/mass spectrometry and RNA interference. Our results showed that the rearing conditions significantly affected the weight of adult and modulated EβF synthesis in a transgenerational manner. Specifically, the quantity of EβF per milligram of aphid was significantly reduced in the individually reared adult or 1st-instar nymphs derived from 1-day-old adult reared individually, but EβF in the nymph derived from 2-day-old adult that experienced collective conditions returned to normal. Further study revealed that the production of EβF started in embryo and was extended to early nymphal stage, which was modulated by farnesyl diphosphate synthase genes (RpFPPS1 and RpFPPS2) and rearing conditions. Knockdown of RpFPPS1 and RpFPPS2 confirmed the role played by FPPS in the biosynthesis of aphid alarm pheromone. Our results suggested that the production of EβF starts at the embryo stage and is modulated by FPPS and rearing conditions in R. padi, which sheds lights on the modulatory mechanisms of EβF in the aphid.
MeSH term(s)	Animals ; Aphids/genetics ; Aphids/growth & development ; Aphids/metabolism ; Body Weight ; Geranyltranstransferase/genetics ; Nymph ; Pheromones/biosynthesis ; RNA Interference ; Sesquiterpenes/metabolism
Chemical Substances	Pheromones ; Sesquiterpenes ; beta-farnesene (18794-84-8) ; Geranyltranstransferase (EC 2.5.1.10)
Language	English
Publishing date	2019-04-10
Publishing country	England
Document type	Journal Article
ZDB-ID	280516-9
ISSN	1475-2670 ; 0007-4853
ISSN (online)	1475-2670
ISSN	0007-4853
DOI	10.1017/S0007485319000154
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Article: [Clinical efficacy analysis of arthroscopic treatment for hallux ganglion cyst deriving from ankle joint].

Zhang, Q L / Chen, L / Han, M T / Xu, B Q / Hu, Y / Li, Z X

Zhonghua wai ke za zhi [Chinese journal of surgery

2023 Volume 61, Issue 11, Page(s) 982–988

Abstract: Objective: ...

Abstract	Objective:
Language	Chinese
Publishing date	2023-09-27
Publishing country	China
Document type	English Abstract ; Journal Article
ZDB-ID	604573-x
ISSN	0529-5815
ISSN	0529-5815
DOI	10.3760/cma.j.cn112139-20230202-00048
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Article ; Online: The terpenoid backbone biosynthesis pathway directly affects the biosynthesis of alarm pheromone in the aphid.

Sun, Z-J / Li, Z-X

Insect molecular biology

2018 Volume 27, Issue 6, Page(s) 824–834

Abstract: The terpenoid backbone biosynthesis pathway is responsible for the synthesis of different backbones for terpenoids; (E)-β-farnesene (EβF), a sesquiterpene, is the major component of aphid alarm pheromone. Our previous studies eliminated the possibility ... ...

Abstract	The terpenoid backbone biosynthesis pathway is responsible for the synthesis of different backbones for terpenoids; (E)-β-farnesene (EβF), a sesquiterpene, is the major component of aphid alarm pheromone. Our previous studies eliminated the possibility of host plants and endosymbionts as the sources of EβF, and we thus speculate that the terpenoid pathway might affect the biosynthesis of EβF in aphids. First, the transcriptional responses of four genes encoding farnesyl diphosphate synthase (FPPS), geranylgeranyl diphosphate synthase (GGPPS) and decaprenyl diphosphate synthase in the cotton aphid Aphis gossypii to simulated stimulation were analysed using quantitative real-time PCR, showing an immediate decrease in the transcript abundances of the four genes. Next, RNA-interference-mediated gene knockdown was performed, indicating that fpps knockdown caused a significant cost in terms of body size and fecundity. Finally, an association analysis of gene knockdown with the amount of EβF was conducted, revealing that the concentration of EβF per milligram of aphid was drastically decreased in response to fpps knockdown, whereas ggpps knockdown significantly raised the concentration of EβF. Our data support a peculiar mode of biosynthesis and storage of the aphid alarm pheromone that relies directly on the terpenoid backbone biosynthesis pathway in the aphid.
MeSH term(s)	Animals ; Aphids/genetics ; Aphids/metabolism ; Body Size ; Fertility ; Gene Expression Regulation ; Mortality ; Pheromones/biosynthesis ; RNA Interference ; Sesquiterpenes/metabolism
Chemical Substances	Pheromones ; Sesquiterpenes ; beta-farnesene (18794-84-8)
Language	English
Publishing date	2018-09-12
Publishing country	England
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	33602-6
ISSN	1365-2583 ; 0962-1075
ISSN (online)	1365-2583
ISSN	0962-1075
DOI	10.1111/imb.12521
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Article ; Online: Spatiotemporal expression profiling of the farnesyl diphosphate synthase genes in aphids and analysis of their associations with the biosynthesis of alarm pheromone.

Cheng, Y-J / Li, Z-X

Bulletin of entomological research

2018 Volume 109, Issue 3, Page(s) 398–407

Abstract: The alarm behavior plays a key role in the ecology of aphids, but the site and molecular mechanism for the biosynthesis of aphid alarm pheromone are largely unknown. Farnesyl diphosphate synthase (FPPS) catalyzes the synthesis of FPP, providing the ... ...

Abstract	The alarm behavior plays a key role in the ecology of aphids, but the site and molecular mechanism for the biosynthesis of aphid alarm pheromone are largely unknown. Farnesyl diphosphate synthase (FPPS) catalyzes the synthesis of FPP, providing the precursor for the alarm pheromone (E)-β-farnesene (EβF), and we speculate that FPPS is closely associated with the biosynthetic pathway of EβF. We firstly analyzed the spatiotemporal expression of FPPS genes by using quantitative reverse transcription-polymerase chain reaction, showing that they were expressed uninterruptedly from the embryonic stage to adult stage, with an obvious increasing trend from embryo to 4th-instar in the green peach aphid Myzus persicae, but FPPS1 had an overall significantly higher expression level than FPPS2; both FPPS1 and FPPS2 exhibited the highest expression in the cornicle area. This expression pattern was verified in Acyrthosiphon pisum, suggesting that FPPS1 may play a more important role in aphids and the cornicle area is most likely the site for EβF biosynthesis. We thus conducted a quantitative measurement of EβF in M. persicae by gas chromatography-mass spectrometry. The data obtained were used to perform an association analysis with the expression data, revealing that the content of EβF per aphid was significantly correlated with the mean weight per aphid (r = 0.8534, P = 0.0307) and the expression level of FPPS1 (r = 0.9134, P = 0.0109), but not with that of FPPS2 (r = 0.4113, P = 0.4179); the concentration of EβF per milligram of aphid was not correlated with the mean weight per aphid or the expression level of FPPS genes. These data suggest that FPPS1 may play a key role in the biosynthesis of aphid alarm pheromone.
MeSH term(s)	Animals ; Aphids/enzymology ; Aphids/genetics ; Aphids/growth & development ; Aphids/metabolism ; Body Weight ; Gene Expression Profiling ; Geranyltranstransferase/genetics ; Life Cycle Stages ; Pheromones/biosynthesis ; Sesquiterpenes/metabolism ; Spatio-Temporal Analysis
Chemical Substances	Pheromones ; Sesquiterpenes ; beta-farnesene (18794-84-8) ; Geranyltranstransferase (EC 2.5.1.10)
Language	English
Publishing date	2018-10-01
Publishing country	England
Document type	Journal Article
ZDB-ID	280516-9
ISSN	1475-2670 ; 0007-4853
ISSN (online)	1475-2670
ISSN	0007-4853
DOI	10.1017/S0007485318000706
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Article ; Online: Highly efficient polarization-entangled photon-pair generation in lithium niobate waveguides based on bound states in continuum.

Chen, G Y / Li, Z X / Chen, Y H / Zhang, X D

Optics express

2021 Volume 29, Issue 8, Page(s) 12110–12123

Abstract: Integrated optics provides a platform for the experimental implementation of highly complex and compact circuits for practical applications as well as for advances in the fundamental science of quantum optics. The lithium niobate (LN) waveguide is an ... ...

Abstract	Integrated optics provides a platform for the experimental implementation of highly complex and compact circuits for practical applications as well as for advances in the fundamental science of quantum optics. The lithium niobate (LN) waveguide is an important candidate for the construction of integrated optical circuits. Based on the bound state in the continuum (BIC) in a LN waveguide, we propose an efficient way to produce polarization-entangled photon pairs. The implementation of this method is simple and does not require the polarization process needed for periodically poled LN. The generation rate of the entangled photon pairs increases linearly with the length of the waveguide. For visible light, the generation efficiency can be improved by more than five orders of magnitude with waveguides having the length of only a few millimeters, compared with the corresponding case without BICs. The phenomena can appear in a very wide spectrum range from the visible to THz regions. This study is of great significance for the development of active integrated quantum chips in various wavelength ranges.
Language	English
Publishing date	2021-02-23
Publishing country	United States
Document type	Journal Article
ZDB-ID	1491859-6
ISSN	1094-4087 ; 1094-4087
ISSN (online)	1094-4087
ISSN	1094-4087
DOI	10.1364/OE.420792
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Article: [Radial artery thrombosis in optical coherence tomography guided transradial coronary angiography and percutaneous coronary intervention in acute coronary syndrome patients and its risk factors analysis].

Liu, Z J / Niu, D / Li, Z X / Guo, J C

Zhonghua xin xue guan bing za zhi

2021 Volume 49, Issue 1, Page(s) 37–42

Abstract: Objective: ...

Abstract	Objective:
Language	Chinese
Publishing date	2021-01-11
Publishing country	China
Document type	English Abstract ; Journal Article
ZDB-ID	603425-1
ISSN	0253-3758
ISSN	0253-3758
DOI	10.3760/cma.j.cn112148-20200312-00196
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Article: [Report content and prenatal diagnosis of non-invasive prenatal testing for sex chromosome aneuploidy].

Zhou, C X / He, L L / Zhu, X Y / Li, Z X / Duan, H L / Liu, W / Gu, L L / Li, J

Zhonghua fu chan ke za zhi

2023 Volume 58, Issue 10, Page(s) 766–773

Abstract: Objective: ...

Abstract	Objective:
MeSH term(s)	Female ; Pregnancy ; Humans ; Retrospective Studies ; DNA Copy Number Variations ; In Situ Hybridization, Fluorescence ; Aneuploidy ; Prenatal Diagnosis/methods ; Sex Chromosome Aberrations ; Sex Chromosomes/genetics
Language	Chinese
Publishing date	2023-10-17
Publishing country	China
Document type	English Abstract ; Journal Article
ZDB-ID	604570-4
ISSN	0529-567X
ISSN	0529-567X
DOI	10.3760/cma.j.cn112141-20230412-00168
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Article: [Scoping review of progress in cohort studies of autism spectrum disorder].

Wu, Y X / Li, Z X / Lyu, X Z / Wang, M / Huang, T Y / Cheng, J H / Meng, R R

Zhonghua liu xing bing xue za zhi = Zhonghua liuxingbingxue zazhi

2023 Volume 44, Issue 5, Page(s) 837–844

Abstract: Objective: ...

Abstract	Objective:
MeSH term(s)	Humans ; Autism Spectrum Disorder ; Cohort Studies ; Databases, Factual
Language	Chinese
Publishing date	2023-05-22
Publishing country	China
Document type	Review ; English Abstract ; Journal Article
ZDB-ID	645026-x
ISSN	0254-6450
ISSN	0254-6450
DOI	10.3760/cma.j.cn112338-20221027-00918
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Article: Spatiotemporal expression profiling of the farnesyl diphosphate synthase genes in aphids and analysis of their associations with the biosynthesis of alarm pheromone

Cheng, Y.-J / Li, Z.-X

Bulletin of entomological research. 2019 June, v. 109, no. 3

2019

Abstract	The alarm behavior plays a key role in the ecology of aphids, but the site and molecular mechanism for the biosynthesis of aphid alarm pheromone are largely unknown. Farnesyl diphosphate synthase (FPPS) catalyzes the synthesis of FPP, providing the precursor for the alarm pheromone (E)-β-farnesene (EβF), and we speculate that FPPS is closely associated with the biosynthetic pathway of EβF. We firstly analyzed the spatiotemporal expression of FPPS genes by using quantitative reverse transcription-polymerase chain reaction, showing that they were expressed uninterruptedly from the embryonic stage to adult stage, with an obvious increasing trend from embryo to 4th-instar in the green peach aphid Myzus persicae, but FPPS1 had an overall significantly higher expression level than FPPS2; both FPPS1 and FPPS2 exhibited the highest expression in the cornicle area. This expression pattern was verified in Acyrthosiphon pisum, suggesting that FPPS1 may play a more important role in aphids and the cornicle area is most likely the site for EβF biosynthesis. We thus conducted a quantitative measurement of EβF in M. persicae by gas chromatography-mass spectrometry. The data obtained were used to perform an association analysis with the expression data, revealing that the content of EβF per aphid was significantly correlated with the mean weight per aphid (r = 0.8534, P = 0.0307) and the expression level of FPPS1 (r = 0.9134, P = 0.0109), but not with that of FPPS2 (r = 0.4113, P = 0.4179); the concentration of EβF per milligram of aphid was not correlated with the mean weight per aphid or the expression level of FPPS genes. These data suggest that FPPS1 may play a key role in the biosynthesis of aphid alarm pheromone.
Keywords	Acyrthosiphon pisum ; Myzus persicae ; adults ; alarm pheromones ; biochemical pathways ; biosynthesis ; catalytic activity ; ecology ; enzymes ; gas chromatography-mass spectrometry ; genes ; quantitative analysis ; reverse transcriptase polymerase chain reaction
Language	English
Dates of publication	2019-06
Size	p. 398-407.
Publishing place	Cambridge University Press
Document type	Article
ZDB-ID	280516-9
ISSN	1475-2670 ; 0007-4853
ISSN (online)	1475-2670
ISSN	0007-4853
DOI	10.1017/S0007485318000706
Database	NAL-Catalogue (AGRICOLA)

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Article: Over-Expression of LaMIR166a Promotes Organs Development in Nicotiana benthamiana

Li, Z. X / Qi, L. W

Russian journal of plant physiology. 2019 Sept., v. 66, no. 5

2019

Abstract: Most studies related to the functions of miR165/166 have used Arabidopsis as the experimental material. However, Nicotiana benthamiana Domin is a more ideal research material as its typical stem structure. Additionally, most of the relevant research has ... ...

Abstract	Most studies related to the functions of miR165/166 have used Arabidopsis as the experimental material. However, Nicotiana benthamiana Domin is a more ideal research material as its typical stem structure. Additionally, most of the relevant research has focused on the functions of HD-ZIP III genes. As an upstream regulatory factor, the function of miR165/166 needs to be defined more directly. So far, the function of miR165/166 in N. benthamiana has not yet been examined. The Agrobacterium-mediated genetic transformation method was used to transform LaMIR166a from Larix leptolepis overexpression vector into N. benthamiana leaves, and three transgenic lines were obtained after molecular detection. Observation on the one-month seedlings revealed that overexpression of LaMIR166a markedly enhanced the biomass accumulation of N. benthamiana plants. Additionally, growth parameters including root length and basal diameter, lateral root density, stem ground diameter and stem internode length of transgenic plants were significantly higher than in wild type (WT) plants. Microscopic observation of stem slices and root squashes showed that overexpression of LaMIR166a significantly promoted xylem formation and development, and the growth of root hairs, which showed a bent phenotype. The results of the present study suggest that up-regulation of miR166a promotes the growth and development of N. benthamiana plants.
Keywords	Arabidopsis ; biomass production ; gene overexpression ; genes ; genetic transformation ; internode length ; Larix kaempferi ; leaves ; microscopy ; Nicotiana benthamiana ; phenotype ; root hairs ; seedlings ; squashes ; transgenic plants ; xylem
Language	English
Dates of publication	2019-09
Size	p. 718-724.
Publishing place	Pleiades Publishing
Document type	Article
ZDB-ID	1166808-8
ISSN	1608-3407 ; 1070-3292 ; 1021-4437
ISSN (online)	1608-3407
ISSN	1070-3292 ; 1021-4437
DOI	10.1134/S1021443719050133
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