Genome-wide identification, comparative analysis and functional roles in flavonoid biosynthesis of cytochrome P450 superfamily in pear (Pyrus spp.)
The cytochrome P450 (CYP) superfamily is the largest enzyme metabolism family in plants identified to date, and it is involved in many biological processes, including secondary metabolite biosynthesis, hormone me... (Source: BMC Genetics)
Source: BMC Genetics - October 3, 2023 Category: Genetics & Stem Cells Authors: Wei Zhang, Hongxiang Li, Qionghou Li, Zewen Wang, Weiwei Zeng, Hao Yin, Kaijie Qi, Ying Zou, Jian Hu, Baisha Huang, Peng Gu, Xin Qiao and Shaoling Zhang Tags: Research Source Type: research

The pear genomics database (PGDB): a comprehensive multi-omics research platform for Pyrus spp.
Pears are among the most important temperate fruit trees in the world, with significant research efforts increasing over the last years. However, available omics data for pear cannot be easily and quickly retr... (Source: BMC Plant Biology)
Source: BMC Plant Biology - September 15, 2023 Category: Biology Authors: Shulin Chen, Manyi Sun, Shaozhuo Xu, Cheng Xue, Shuwei Wei, Pengfei Zheng, Kaidi Gu, Zhiwen Qiao, Zhiying Liu, Mingyue Zhang and Jun Wu Tags: Research Source Type: research

Genes, Vol. 14, Pages 1785: Transcriptome and Physiological Analysis Highlight Lignin Metabolism of the Fruit Dots Disordering during Postharvest Cold Storage in & lsquo;Danxiahong & rsquo; Pear
Genes, Vol. 14, Pages 1785: Transcriptome and Physiological Analysis Highlight Lignin Metabolism of the Fruit Dots Disordering during Postharvest Cold Storage in ‘Danxiahong’ Pear Genes doi: 10.3390/genes14091785 Authors: Ruiwei Duan Xiangzhan Zhang Yudong Liu Lei Wang Jian Yang Long Wang Suke Wang Yanli Su Huabai Xue Pear (Pyrus L.) is one of the most important fruits in the world. Fruit dots are an important trait that affects pear quality. Abnormal fruit dots usually reduce the merchantability of pears. In this research, during cold storage, ‘Danxiahong&r...
Source: Genes - September 11, 2023 Category: Genetics & Stem Cells Authors: Ruiwei Duan Xiangzhan Zhang Yudong Liu Lei Wang Jian Yang Long Wang Suke Wang Yanli Su Huabai Xue Tags: Article Source Type: research

GSE234786 Detection of plant microRNAs in edible-plant based products
Contributors : E D íez-Sainz ; S Lorente-Cebrián ; P Aranaz ; J I Riezu-Boj ; F I MilagroSeries Type : Non-coding RNA profiling by high throughput sequencingOrganism : Citrus sinensis ; Juglans regia ; Malus domestica ; Olea europaea ; Prunus dulcis ; Pyrus communis ; Solanum lycopersicum ; Spinacia oleraceaPlant-based diets could be a key source of microRNAs in animals. Plant microRNAs are cross-kingdom gene expression regulators that could modulate mammalian gene expression, influencing their physiology. Therefore, it is important to identify the microRNA expression profile of plant foods in order to identify potent...
Source: GEO: Gene Expression Omnibus - September 5, 2023 Category: Genetics & Stem Cells Tags: Non-coding RNA profiling by high throughput sequencing Citrus sinensis Juglans regia Malus domestica Olea europaea Prunus dulcis Pyrus communis Solanum lycopersicum Spinacia oleracea Source Type: research

Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) involved in lignin accumulation in pear fruits
Physiol Mol Biol Plants. 2023 Jun;29(6):791-798. doi: 10.1007/s12298-023-01329-1. Epub 2023 Jul 10.ABSTRACTOne of the most important factors impacting the quality of pear fruit is the presence of stone cells and lignin. Lignin is the main component of stone cells in pear fruits. Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) are involved in lignin accumulation in pear fruits. However, the functions of these genes in lignin biosynthesis were excluded in pear. In our study, we isolated and cloned Pb4CL11 (GenBank: KM455955.1) and PbC3H1 (GenBank: KM373790.1) from...
Source: Mol Biol Cell - July 31, 2023 Category: Molecular Biology Authors: Yunpeng Cao Yu Chen Lin Zhang Yongping Cai Source Type: research

Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) involved in lignin accumulation in pear fruits
Physiol Mol Biol Plants. 2023 Jun;29(6):791-798. doi: 10.1007/s12298-023-01329-1. Epub 2023 Jul 10.ABSTRACTOne of the most important factors impacting the quality of pear fruit is the presence of stone cells and lignin. Lignin is the main component of stone cells in pear fruits. Two monolignoid biosynthetic genes 4-coumarate:coenzyme A ligase (4CL) and p-coumaric acid 3-hdroxylase (C3H) are involved in lignin accumulation in pear fruits. However, the functions of these genes in lignin biosynthesis were excluded in pear. In our study, we isolated and cloned Pb4CL11 (GenBank: KM455955.1) and PbC3H1 (GenBank: KM373790.1) from...
Source: Mol Biol Cell - July 31, 2023 Category: Molecular Biology Authors: Yunpeng Cao Yu Chen Lin Zhang Yongping Cai Source Type: research

PearMODB: a multiomics database for  pear (Pyrus) genomics, genetics and breeding study
AbstractPear (Pyrus ssp.) belongs to Rosaceae and is an important fruit tree widely cultivated around the world. Currently, challenges to cope with the burgeoning sets of multiomics data are rapidly increasing. Here, we constructed the Pear Multiomics Database (PearMODB) by integrating genome, transcriptome, epigenome and population variation data, and aimed to provide a portal for accessing and analyzing pear multiomics data. A variety of online tools were built including gene search, BLAST, JBrowse, expression heatmap, synteny analysis and primer design. The information of DNA methylation sites and single-nucleotide poly...
Source: Database : The Journal of Biological Databases and Curation - July 6, 2023 Category: Databases & Libraries Source Type: research

GSE193982 Comparative Transcriptome Analysis Reveals Insight into Exocarp Russeting Pear Variety
Contributors : Chunlei Wang ; Jing ZhangSeries Type : Expression profiling by high throughput sequencingOrganism : Pyrus pyrifoliaWe carried out the transcriptome analysis to identify the key genes involved in pear fruit russet formation by comparing five pear varieties with distinct exocarp characteristics (Source: GEO: Gene Expression Omnibus)
Source: GEO: Gene Expression Omnibus - June 30, 2023 Category: Genetics & Stem Cells Tags: Expression profiling by high throughput sequencing Pyrus pyrifolia Source Type: research

Molecules, Vol. 28, Pages 4794: Exploring the Aroma Fingerprint of Various Chinese Pear Cultivars through Qualitative and Quantitative Analysis of Volatile Compounds Using HS-SPME and GC & times;GC-TOFMS
This study contributes to further research on volatile compound analysis, and provides useful data for the improvement of fruit sensory quality and breeding work. (Source: Molecules)
Source: Molecules - June 15, 2023 Category: Chemistry Authors: Wenjun Zhang Mengmeng Yan Xinxin Zheng Zilei Chen Huidong Li Jiangsheng Mao Hongwei Qin Chao Zhu Hongxia Du A. M. Abd El-Aty Tags: Article Source Type: research

Metabolome and transcriptome profiling revealed the enhanced synthesis of volatile esters in Korla pear
Flavor contributes to the sensory quality of fruits, including taste and aroma aspects. The quality of foods is related to their flavor-associated compounds. Pear fruits have a fruity sense of smell, and ester... (Source: BMC Plant Biology)
Source: BMC Plant Biology - May 19, 2023 Category: Biology Authors: Yuan Liu, Huan Wen, Xiaoping Yang, Cuiyun Wu, Jiaqi Ming, Hongyan Zhang, Jiajing Chen, Jiangbo Wang and Juan Xu Tags: Research Source Type: research

Low temperatures inhibit the pectin degradation of 'Docteur Jules Guyot' pear (Pyrus communis L.)
In this study, the fruit firmness, pectin polysaccharide content, pectin-degrading enzyme activity, and pectin degradation gene expression of 'Docteur Jules Guyot' pears under low temperature (LT) and room temperature (RT) were analyzed. It was found that water-soluble pectin (WSP) was significantly negatively correlated with fruit flesh firmness, and the activities of several pectin-degrading enzymes were inhibited under LT storage conditions. In addition, it was also found that the gene expression patterns of PcPME2, PcPME3, PcPG1, PcPG2, PcPL, PcGAL1, PcGAL2, PcGAL4, and PcARF1 were inhibited by LT. The C-repeat binding...
Source: International Journal of Biological Macromolecules - May 7, 2023 Category: Biochemistry Authors: Jianzhao Li Xiaonan Dai Qingyu Li Fudong Jiang Xiaofei Xu Tingting Guo Hongxia Zhang Source Type: research

Low temperatures inhibit the pectin degradation of 'Docteur Jules Guyot' pear (Pyrus communis L.)
In this study, the fruit firmness, pectin polysaccharide content, pectin-degrading enzyme activity, and pectin degradation gene expression of 'Docteur Jules Guyot' pears under low temperature (LT) and room temperature (RT) were analyzed. It was found that water-soluble pectin (WSP) was significantly negatively correlated with fruit flesh firmness, and the activities of several pectin-degrading enzymes were inhibited under LT storage conditions. In addition, it was also found that the gene expression patterns of PcPME2, PcPME3, PcPG1, PcPG2, PcPL, PcGAL1, PcGAL2, PcGAL4, and PcARF1 were inhibited by LT. The C-repeat binding...
Source: International Journal of Biological Macromolecules - May 7, 2023 Category: Biochemistry Authors: Jianzhao Li Xiaonan Dai Qingyu Li Fudong Jiang Xiaofei Xu Tingting Guo Hongxia Zhang Source Type: research

Molecules, Vol. 28, Pages 3862: Bioactive Compounds and Sensory Analysis of Freeze-Dried Prickly Pear Fruits from An Inter-Andean Valley in Peru
The objective of this research was to evaluate the bioactive compounds and the sensory analysis of freeze-dried prickly pear fruits from an inter-Andean valley in Peru. The prickly pear fruits of the morada, anaranjada, and blanca ecotypes came from an inter-Andean valley in Peru at 2972 m altitude. The sliced fruits were freeze-dried at −40 °C and 0.25 mTorr, and the total polyphenol content (TPC), vitamin C, and antioxidant activity (AA) were determined, as well as the color L* a* b*, color index (CI*), FTIR spectra, and mineral content. In the same way, sensory analysis of preferences with nine...
Source: Molecules - May 3, 2023 Category: Chemistry Authors: David Choque-Quispe Carlos A. Ligarda-Samanez Edith R. Huam án-Rosales John Peter Aguirre Landa Henrry W. Agreda Cerna Miluska M. Zamalloa-Puma Genaro Julio Álvarez-López Gloria I. Barboza-Palomino Humberto Alzamora-Flores Wilfredo Gamarra-Villanueva Tags: Article Source Type: research

Chitosan and chitooligosaccharide regulated reactive oxygen species homeostasis at wounds of pear fruit during healing
In this study, the wounded pear fruit (Pyrus bretschneideri cv. Dongguo) was treated with a 1 g L-1 CTS and COS. We found CTS and COS treatments increased NADPH oxidase and superoxide dismutase activities, and promoted O2.- and H2O2 production at wounds. CTS and COS also enhanced the activities of catalase, peroxidase, ascorbate peroxidase, monodehydroascorbate reductase, dehydroascorbate reductase, and glutathione reductase, and elevated the levels of ascorbic acid and glutathione. In addition, the two chemicals improved antioxidant capacity in vitro and maintained cell membrane integrity at fruit wounds during healing. T...
Source: International Journal of Biological Macromolecules - April 13, 2023 Category: Biochemistry Authors: Lirong Yu Xuemei Zhang Feng Zhang Yingbo Tang Di Gong William Oyom Yongcai Li Dov Prusky Gianfranco Romanazzi Yang Bi Source Type: research