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1. Genetic relationship between the ‘Korla fragrant pear’ and local pear varieties in xinjiang based on floral organ characteristics

Author:
Niu, Yingying; Chen, Xiangying; Zhou, Weiquan; Li, Wenwen; Zhao, Shirong; Nasir, Mansur; Dong, Shengli; Zhang, Shikui; Liao, Kang
Source:
Scientia horticulturae 2019 v.257 pp. 108621
ISSN:
0304-4238
Subject:
Pyrus ussuriensis,   etc   ; Pyrus betulifolia; exine; Aronia arbutifolia; Pyrus communis; Pyrus bretschneideri; germination; Pyrus pyrifolia; flowers; pears; furrows; pollen; genetic relationships; China;     Show all 14 Subjects
Abstract:
... The characters of floral organ and pollen of local pear varieties in Xinjiang, such as the ‘Korla fragrant pear’ and 39 other varieties or types, Pyrus bretschneideri Rehd., Pyrus pyrifolia Nakai., and Pyrus communis L. were measured and described. The genetic relationships between the ‘Korla fragrant pear’ and other local pear varieties in Xinjiang were analyzed by clustering. The number of flowe ...
DOI:
10.1016/j.scienta.2019.108621

2. GABA application improves the mitochondrial antioxidant system and reduces peel browning in ‘Nanguo’ pears after removal from cold storage

Author:
Li, Jiaxin; Zhou, Xin; Wei, Baodong; Cheng, Shunchang; Zhou, Qian; Ji, Shujuan
Source:
Food chemistry 2019 v.297 pp. 124903
ISSN:
0308-8146
Subject:
Pyrus ussuriensis,   etc   ; antioxidants; catalase; cold storage; enzyme activity; gamma-aminobutyric acid; gene expression; malondialdehyde; membrane permeability; mitochondria; mitochondrial membrane; oxidation; oxygen; pears; pericarp; peroxidase; refrigeration; superoxide dismutase;     Show all 18 Subjects
Abstract:
... Although refrigeration is commonly used in the storage of ‘Nanguo’ pears (Pyrus ussuriensis Maxim.), long-term refrigeration can result in browning of the pericarp. In this study, we aimed to determine how γ-aminobutyrate (GABA) affects the mitochondrial oxidation defense system in ‘Nanguo’ pears and how it might be used to prevent post-refrigeration peel browning. We found that fruit treated with ...
DOI:
10.1016/j.foodchem.2019.05.177

3. Construction of a high-density genetic linkage map and QTL mapping for growth traits in Pseudobagrus ussuriensis

Author:
Zhu, Chuankun; Liu, Haiyang; Pan, Zhengjun; Chang, Guoliang; Wang, Hui; Wu, Nan; Ding, Huaiyu; Yu, Xiangsheng
Source:
Aquaculture 2019 pp. 734213
ISSN:
0044-8486
Subject:
Pyrus ussuriensis,   etc   ; Ictalurus punctatus; Pseudobagrus; catfish; chromosome mapping; females; genes; genomics; growth traits; linkage groups; loci; males; marker-assisted selection; phenotypic variation; quantitative trait loci; single nucleotide polymorphism;     Show all 16 Subjects
Abstract:
... Growth traits of fish are controlled by multiple gene loci called quantitative trait loci (QTLs). For identification of these QTLs, a high-density genetic linkage map is necessary. In the present study, a high-resolution genetic linkage map was constructed for the Ussuri catfish Pseudobagrus ussuriensis using SNPs generated using 2b-RAD technology in an F1 family. The consensus map of P. ussuriens ...
DOI:
10.1016/j.aquaculture.2019.734213

4. Extracts of the leaves of Pyrus ussuriensis Maxim. Alleviate itch sensation via TSLP-dependent manner in mouse models of atopic dermatitis

Author:
Kim, Bo Hyun; Lee, Wook-Joo; Sanjel, Babina; Cho, Kyohee; Son, Youn Kyoung; Park, Hye Yoon; Kim, Sun Yeou; Shim, Won-Sik
Source:
Physiology & behavior 2019 v.210 pp. 112624
ISSN:
0031-9384
Subject:
Pyrus ussuriensis,   etc   ; animal models; atopic dermatitis; calcium; dust; dust mites; ethanol; ethyl acetate; fruit trees; ganglia; ion channels; leaf extracts; leaves; medicinal properties; mice; pears; pruritus; receptors; sensation; sensory neurons; skin lesions; East Asia;     Show all 22 Subjects
Abstract:
... Pyrus ussuriensis Maxim. commonly known as “Sandolbae” in Korean is a pear tree widely distributed across East Asia. Recent studies indicate that P. ussuriensis Maxim. leaves (PUL) have antipruritic effects. This study aimed to determine the effects of PUL extract and its fractions in decreasing the itch sensation and skin lesions in two distinct animal models of atopic dermatitis (AD) induced by ...
DOI:
10.1016/j.physbeh.2019.112624

5. The β-amylase PbrBAM3 from pear (Pyrus betulaefolia) regulates soluble sugar accumulation and ROS homeostasis in response to cold stress

Author:
Zhao, Liangyi; Yang, Tianyuan; Xing, Caihua; Dong, Huizheng; Qi, Kaijie; Gao, Junzhi; Tao, Shutian; Wu, Juyou; Wu, Jun; Zhang, Shaoling; Huang, Xiaosan
Source:
Plant science 2019 v.287 pp. 110184
ISSN:
0168-9452
Subject:
Pyrus ussuriensis,   etc   ; Nicotiana tabacum; Pyrus betulifolia; abscisic acid; antioxidant enzymes; beta-amylase; cold; cold stress; cold tolerance; cold treatment; genes; homeostasis; maltose; metabolism; pears; reactive oxygen species; starch; tobacco; transgenic plants;     Show all 19 Subjects
Abstract:
... β-Amylase (BAM) is involved in sugar metabolism, but the role of BAM genes in cold tolerance remains poorly understood. Here, we report the identification and functional characterization of the chloroplast-localized BAM-encoding gene PbrBAM3 isolated from Pyrus betulaefolia. The transcript levels of PbrBAM3 were up-regulated under cold, dehydration and ABA, but repressed by maltose. Overexpression ...
DOI:
10.1016/j.plantsci.2019.110184

6. Overexpression of PbrNHX2 gene, a Na+/H+ antiporter gene isolated from Pyrus betulaefolia, confers enhanced tolerance to salt stress via modulating ROS levels

Author:
Dong, Huizhen; Wang, Chunmeng; Xing, Caihua; Yang, Tianyuan; Yan, Jinxuan; Gao, Junzhi; Li, Dingli; Wang, Ran; Blumwald, Eduardo; Zhang, Shaoling; Huang, Xiaosan
Source:
Plant science 2019 v.285 pp. 14-25
ISSN:
0168-9452
Subject:
Pyrus ussuriensis,   etc   ; Pyrus betulifolia; antioxidant enzymes; cold; crops; engineering; gene overexpression; gene silencing; genes; potassium; reactive oxygen species; salt stress; salt tolerance; sodium; sodium-hydrogen antiporter; tobacco; tonoplast; transgenic plants;     Show all 18 Subjects
Abstract:
... Intracellular Na+/H+ antiporters (NHXs) play important roles in plant tolerance to salt stress. However, plant NHXs functioning in salt tolerance and the underlying physiological mechanisms remain poorly understood. In this report, we report the identification and functional characterization of PbrNHX2 isolated from Pyrus betulaefolia. PbrNHX2 expression levels were induced by salt, and dehydratio ...
DOI:
10.1016/j.plantsci.2019.04.021

7. Calcium inhibited peel browning by regulating enzymes in membrane metabolism of ‘Nanguo’ pears during post-ripeness after refrigerated storage

Author:
Zhang, Lei; Wang, Jun-wei; Zhou, Bing; Li, Guo-de; Liu, Ye-fei; Xia, Xiao-Lin; Xiao, Zhi-gang; Fei, Lu; Ji, Shu-juan
Source:
Scientia horticulturae 2019 v.244 pp. 15-21
ISSN:
0304-4238
Subject:
Pyrus ussuriensis,   etc   ; ambient temperature; calcium; calcium chloride; catechol oxidase; cold storage; electrolytes; firmness; fruits; gene expression; genes; malondialdehyde; metabolism; pears; phospholipase D; polyphenols; refrigeration; ripening; shelf life; superoxide dismutase;     Show all 20 Subjects
Abstract:
... The post-harvest ripening of ‘Nanguo’ pears (Pyrus ussuriensis Maxim.) can be effectively postponed by refrigerated storage. However, peel browning (PB) often appears in the pears after refrigerated storage during the shelf life at room temperature. In order to find an effective method to relieve PB of pears, 2% CaCl2 was used to treat the fruit after low temperature. In the study, CaCl2 treatment ...
DOI:
10.1016/j.scienta.2018.09.030

8. Two new lignan glycosides from the fruits of Pyrus ussuriensis

Author:
Zhao, Ze-Qing; Su, Yan-Fang; Yang, Fei; Gao, Xiu-Mei; Li, Tian-Xiang
Source:
Journal of Asian natural products research 2016 v.18 no.12 pp. 1151-1157
ISSN:
1477-2213
Subject:
Pyrus ussuriensis,   etc   ; fruits; glycosides; lignans; spectral analysis;     Show all 5 Subjects
Abstract:
... Two new lignan glycosides, ussuriensislignan A (1) and ussuriensislignan B (2), together with seventeen known compounds (3–19), were isolated from the fruits of Pyrus ussuriensis . Their structures were determined by various spectroscopic methods. This is the first report of the isolation of lignans (compounds 1–3) from the genus Pyrus , and compounds 3–6, 12–16 were reported from Pyrus for the fi ...
DOI:
10.1080/10286020.2016.1210132

9. 1-Methylcyclopropene alleviates peel browning of ‘Nanguo’ pears by regulating energy, antioxidant and lipid metabolisms after long term refrigeration

Author:
Tao, Dongbing; Wang, Junwei; Zhang, Lei; Jiang, Yangao; Lv, Mei
Source:
Scientia horticulturae 2019 v.247 pp. 254-263
ISSN:
0304-4238
Subject:
Pyrus ussuriensis,   etc   ; shelf life; electrolytes; H+/K+-exchanging ATPase; vacuoles; NADH dehydrogenase; glutathione; malondialdehyde; hydrogen peroxide; ambient temperature; pears; gene expression; superoxide anion; adenosinetriphosphatase; energy; H-transporting ATP synthase; linoleate 13S-lipoxygenase; adenosine triphosphate; firmness; refrigeration; antioxidant activity; lipid metabolism; cold; 1-methylcyclopropene; fruits; ethylene production; cell respiration; glutathione peroxidase; sulfides; phospholipase D; cold storage;     Show all 31 Subjects
Abstract:
... Ripening of ‘Nanguo’ pears (Pyrus ussuriensis Maxim.) can be slowed down by cold storage, but the peel of fruit is prone to browning when they are returned to room temperature. In this study, effects of 1-methylcyclopropene (1-MCP) treatment on peel browning (PB) of ‘Nanguo’ pears, as well as on energy, antioxidant and lipid metabolisms, were investigated during shelf life after cold storage. 1-MC ...
DOI:
10.1016/j.scienta.2018.12.025

10. Anti-Inflammatory Effect of Chloroform Fraction of <em>Pyrus Ussuriensis Maxim.</em> Leaf Extract on 2, 4-Dinitrochlorobenzene-Induced Atopic Dermatitis in nc/nga Mice

Author:
Cho, KyoHee; Kang, Min Cheol; Parveen, Amna; Yumnam, Silvia; Kim, Sun Yeou
Source:
Nutrients 2019 v.11 no.2
ISSN:
2072-6643
Subject:
Pyrus ussuriensis,   etc   ; animal models; anti-inflammatory activity; asthma; atopic dermatitis; blood serum; chloroform; cough; fever; herbal medicines; high performance liquid chromatography; immunoglobulin E; in vitro studies; interferon-gamma; interleukin-1beta; interleukin-6; leaf extracts; leaves; macrophages; mice; nitric oxide; pears; protein content; skin lesions; therapeutics; tumor necrosis factor-alpha; China; Japan; Korean Peninsula;     Show all 29 Subjects
Abstract:
... Pyrus ussuriensis Maxim, a pear commonly known as “Sandolbae” in Korea, is used as a traditional herbal medicine for asthma, cough, and fever in Korea, China, and Japan. P. ussuriensis Maxim leaves (PUL) have therapeutic effects on atopic dermatitis (AD). However, there are no reports on the efficacy of specific components of PUL. In the present study, activity-guided isolation of PUL was used to ...
DOI:
10.3390/nu11020276

11. Postharvest metabolomic changes in Pyrus ussuriensis Maxim. wild accession ‘Zaoshu Shanli’

Author:
Xu, Jiayu; Zhang, Ying; Qi, Dan; Huo, Hongliang; Dong, Xingguang; Tian, Luming; Zhang, Xiaoshuang; Liu, Chao; Cao, Yufen
Source:
Journal of separation science 2018 v.41 no.21 pp. 4001-4013
ISSN:
1615-9306
Subject:
Pyrus ussuriensis,   etc   ; abscisic acid; biochemical pathways; electrospray ionization mass spectrometry; firmness; fruit quality; fruits; hormones; lipid metabolism; lipids; liquid chromatography; metabolites; metabolomics; pears; storage time;     Show all 15 Subjects
Abstract:
... There are strong economic drivers for understanding the process of fruit post‐harvest softening. In this study, liquid chromatography with electrospray ionization tandem mass spectrometry was used to analyze metabolite changes in ‘Zaoshu Shanli’ fruit after different storage periods; this wild accession of Pyrus ussuriensis presents good fruit quality and relatively low flesh firmness after fruit ...
DOI:
10.1002/jssc.201800543

12. Podosphaera paracurvispora (Erysiphaceae, Ascomycota), a new powdery mildew species on Pyrus from China

Author:
Tang, Shurong; Jiang, Wentao; Qiu, Penglei; Fu, Xiaoying; Li, Yu; Wang, Lilan; Liu, Shuyan
Source:
Mycoscience 2017 v.58 no.2 pp. 116-120
ISSN:
1340-3540
Subject:
Pyrus ussuriensis,   etc   ; Podosphaera; Sorbus; ascospores; fungi; phylogeny; powdery mildew; scientific illustration; taxon descriptions; China; Japan;     Show all 11 Subjects
Abstract:
... Podosphaera paracurvispora, a new powdery mildew species of Podosphaera sect. Podosphaera, is described and illustrated on Pyrus ussuriensis in China. Podosphaera paracurvispora differs from P. clandestina and P. leucotricha which are common causal agents of Pyrus powdery mildew in having crescent-shaped ascospores, and from P. curvispora, endemic in Japan on Sorbus spp., in having much broader pa ...
DOI:
10.1016/j.myc.2016.11.004

13. Differential expression analysis of genes related to graft union healing in Pyrus ussuriensis Maxim by cDNA-AFLP

Author:
Yang, Yingjie; Huang, Manna; Qi, Liying; Song, Jiankun; Li, Qianqian; Wang, Ran
Source:
Scientia horticulturae 2017 v.225 pp. 700-706
ISSN:
0304-4238
Subject:
Pyrus ussuriensis,   etc   ; carbohydrate metabolism; energy; gene expression; gene expression regulation; genes; plantlets; protein metabolism; quantitative polymerase chain reaction;     Show all 9 Subjects
Abstract:
... The purpose of the present study was to understand the molecular mechanisms during the graft union healing process. In the present study, cDNA-amplified fragment length polymorphism (cDNA-AFLP) analysis was used to examine gene expression in Pyrus ussuriensis Maxim micro-grafting plantlets at four time points (at 0, 4, 7, and 11days) during grafting tissue healing process. Twenty-six transcript-de ...
DOI:
10.1016/j.scienta.2017.07.028

14. Effects of postharvest methyl jasmonate treatment on aromatic volatile biosynthesis by ‘Nanguoli’ fruit at different harvest maturity stages

Author:
Qin, G. H.; Wei, S. W.; Tao, S. T.; Zhang, H. P.; Huang, W. J.; Yao, G. F.; Sha, S. F.; Zhang, S. L.
Source:
New Zealand journal of crop and horticultural science 2017 v.45 no.3 pp. 191-201
ISSN:
1175-8783
Subject:
Pyrus ussuriensis,   etc   ; 1-methylcyclopropene; biosynthesis; color; ethylene; ethylene production; flavor; flowering; fruits; harvest date; maturity stage; methyl jasmonate; volatile compounds;     Show all 13 Subjects
Abstract:
... The ripe fruit of Pyrus ussuriensis ‘Nanguoli’ is favoured by people for its attractive colour, exquisite flesh and pleasant flavour. However, its flavour is negatively affected by early harvest. Therefore, this study aimed to determine whether exogenous methyl jasmonate (MJ) can help to regulate aromatic volatiles biosynthesis in pre-climacteric ‘Nanguoli’ fruit at different maturity stages (135 ...
DOI:
10.1080/01140671.2016.1272470

15. Study on chloroplast DNA diversity of cultivated and wild pears (Pyrus L.) in Northern China

Author:
Chang, Yao-Jun; Cao, Yu-Fen; Zhang, Jin-Mei; Tian, Lu-Ming; Dong, Xing-Guang; Zhang, Ying; Qi, Dan; Zhang, Xiao-shuang
Source:
Tree genetics & genomes 2017 v.13 no.2 pp. 44
ISSN:
1614-2942
Subject:
Pyrus ussuriensis,   etc   ; Pyrus pyrifolia; chloroplast DNA; cultivars; cultivation area; genetic variation; haplotypes; nucleotide sequences; pears; phylogeny; China;     Show all 11 Subjects
Abstract:
... Eight pairs of chloroplast DNA (cpDNA) universal primers selected from 34 pairs were used to assess the genetic diversity of 132 pear accessions in Northern China. Among them, six amplified cpDNA fragments showed genetic diversity. A total of 24 variable sites, including 1 singleton variable site and 23 parsimony informative sites, as well as 21 insertion-deletion fragments, were obtained from the ...
DOI:
10.1007/s11295-017-1126-z

16. Effect of ATP treatment on enzymes involved in energy and lipid metabolisms accompany peel browning of ‘Nanguo’ pears during shelf life after low temperature storage

Author:
Zhang, Lei; Wang, Jun-wei; Zhou, Xin; Shi, Fei; Fu, Wei-wei; Ji, Shu-juan
Source:
Scientia horticulturae 2018 v.240 pp. 446-452
ISSN:
0304-4238
Subject:
Pyrus ussuriensis,   etc   ; H+/K+-exchanging ATPase; H-transporting ATP synthase; NAD (coenzyme); NADH dehydrogenase; adenosine triphosphate; adenosinetriphosphatase; ambient temperature; electrolytes; energy; enzyme activity; firmness; fruits; gene expression; malondialdehyde; pears; phospholipase D; ripening; shelf life; vacuoles;     Show all 20 Subjects
Abstract:
... The postharvest ripening and senescence of ‘Nanguo’ pears (Pyrus ussuriensis Maxim.) can be effectively delayed by low temperature storage. However, peel browning (PB) often occurs in pear fruit during shelf life at room temperature. In this study, ATP treatment on ‘Nanguo’ pears has efficiently inhibited the occurrence of PB. Higher flesh firmness, ATP concentration and energy charge (EC) were de ...
DOI:
10.1016/j.scienta.2018.06.036

17. Chemical components and bioactivity evaluation of extracts from pear (Pyrus Ussuriensis Maxim) fruit

Author:
Peng, Fei; Xie, Ying; Li, Xiaojing; Li, Gang; Yang, Yuedong
Source:
Journal of food biochemistry 2018 v.42 no.5 pp. e12586
ISSN:
0145-8884
Subject:
Pyrus ussuriensis,   etc   ; anti-inflammatory agents; beta-sitosterol; betulinic acid; bioactive compounds; bioactive properties; ears; edema; ethyl acetate; fruits; functional foods; functional properties; in vivo studies; metabolites; mice; myristic acid; nitric oxide; oleanolic acid; pears; tumor necrosis factor-alpha; ursolic acid;     Show all 21 Subjects
Abstract:
... In order to discover the bioactive metabolites of Pyrus ussuriensis Maxim, the systematic chemical and pharmacological investigations were performed. The ethyl acetate extract of the plant displayed activities against ear edema in mice, with an inhibition rate of 17.1%, at a dose of 400mg/kg in vivo. Meanwhile, the ethyl acetate extract showed the best apophlegmatic (inhibition: 49.9%) and antitus ...
DOI:
10.1111/jfbc.12586

18. Deep sequencing-based characterization of transcriptome of Pyrus ussuriensis in response to cold stress

Author:
Yang, Tianyuan; Huang, Xiao-San
Source:
Gene 2018 v.661 pp. 109-118
ISSN:
0378-1119
Subject:
Pyrus ussuriensis,   etc   ; cold stress; cold tolerance; data collection; gene ontology; genes; high-throughput nucleotide sequencing; hormones; innate immunity; pears; photosynthesis; plant hormones; quantitative polymerase chain reaction; signal transduction; transcription factors; transcriptome;     Show all 16 Subjects
Abstract:
... Pyrus ussuriensis is extremely cold hardy when fully acclimated, but knowledge relevant to the molecular mechanisms underlying this economically valuable trait is still limited so far. In this study, global transcriptome profiles of Pyrus ussuriensis under cold conditions (4 °C) over a time course were generated by high-throughput sequencing. In total, >57,121,199 high quality clean reads were obt ...
DOI:
10.1016/j.gene.2018.03.067

19. Effect of low temperature storage on energy and lipid metabolisms accompanying peel browning of ‘Nanguo’ pears during shelf life

Author:
Wang, Junwei; Jiang, Yangao; Li, Guode; Lv, Mei; Zhou, Xin; Zhou, Qian; Fu, Weiwei; Zhang, Lei; Chen, Yufeng; Ji, Shujuan
Source:
Postharvest biology and technology 2018 v.139 pp. 75-81
ISSN:
0925-5214
Subject:
Pyrus ussuriensis,   etc   ; H+/K+-exchanging ATPase; H-transporting ATP synthase; NAD (coenzyme); NADH dehydrogenase; adenosine triphosphate; adenosinetriphosphatase; cold storage; electrolytes; energy; energy metabolism; malondialdehyde; pears; phospholipase D; refrigeration; shelf life; storage time; vacuoles;     Show all 18 Subjects
Abstract:
... Low temperature storage is an effective technology which is widely used in prolonging the postharvest storage of ‘Nanguo’ pears (Pyrus ussuriensis Maxim). However, the peel of pears gradually turned brown during shelf life at 20 °C after the long period of cold storage. In this study, peel browning (PB) particularly appeared during shelf life in the pears which were stored for 120 d and 180 d. Inc ...
DOI:
10.1016/j.postharvbio.2018.01.020

20. Antioxidant phenolic compounds isolated from wild Pyrus ussuriensis Maxim. fruit peels and leaves

Author:
Qiu, Daren; Guo, Jie; Yu, Huimei; Yan, Jiao; Yang, Shengxiang; Li, Xiang; Zhang, Yamei; Sun, Jinzhu; Cong, Jie; He, Shuliang; Wei, Dongsheng; Qin, Jian-Chun
Source:
Food chemistry 2018 v.241 pp. 182-187
ISSN:
0308-8146
Subject:
Pyrus ussuriensis,   etc   ; 2,2-diphenyl-1-picrylhydrazyl; antioxidant activity; apigenin; chromatography; daidzein; fruit peels; humans; inhibitory concentration 50; leaf extracts; leaves; medicine; nuclear magnetic resonance spectroscopy; pears; quercetin; reactive oxygen species; rutin;     Show all 17 Subjects
Abstract:
... Thirteen phenolic compounds were isolated from pear (Pyrus ussuriensis Maxim.) peels and leaves extracts by using various column chromatography techniques with a guided DPPH (1,1-diphenyl-2-picrylhydrazyl) radical-scavenging assay, the result of antioxidant activity of phenolic compounds is then verified by measurement of ROS (reactive oxygen species). The isolated compounds were identified as rut ...
DOI:
10.1016/j.foodchem.2017.08.072