scholarly journals Peer Review #1 of "Transcriptome analysis of diploid and triploid Populus tomentosa (v0.1)"

2020 ◽  
Keyword(s):  
Peer Review ◽  
Transcriptome Analysis ◽  
Populus Tomentosa ◽  
Triploid Populus Tomentosa

Influences of Laccase Mediator System on Bleachability and Fiber Properties of APMP Pulp

2014 ◽  
Vol 1081 ◽  
pp. 299-303
Author(s):  
Hui Mei Wang ◽  
Yu Liu ◽  
Jia Chuan Chen ◽  
Zhen Wang
Keyword(s):  
Hydrogen Peroxide ◽  
Populus Tomentosa ◽  
Fiber Morphology ◽  
Alkaline Hydrogen Peroxide ◽  
Obvious Effect ◽  
Peroxide Bleaching ◽  
Fiber Properties ◽  
Mediator System ◽  
Laccase Mediator System ◽  
Triploid Populus Tomentosa

In this research, the laccase mediator system (LMS) was used to modify the unbleached triploid populus tomentosa alkaline hydrogen peroxide pulp (APMP). The changes of pulp brightness were measured and the effects of LMS on the subsequent hydrogen peroxide bleaching were also determined. Besides, the fiber morphology was analyzed by ESEM, and then the obvious changes of pulp have been recovered. In a word, the LMS has obvious effect on cellulose.

scholarly journals Antioxidative low molecular weight extractives from triploid Populus tomentosa xylem

BioResources ◽  
2010 ◽  
Vol 6 (1) ◽  
pp. 232-242
Author(s):  
Chuan-Ling Si ◽  
Yi-Yuan Lu ◽  
Yu Zhang ◽  
Jie Xu ◽  
Pan-Pan Qin ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Paper Industry ◽  
Radical Scavenging ◽  
Good Alternative ◽  
Populus Tomentosa ◽  
Low Molecular Weight ◽  
Phytochemical Investigation ◽  
Populus Tomentosa Carr ◽  
Triploid Populus Tomentosa ◽  
Bioactive Potential

Triploid Populus tomentosa Carr. (Salicaceae) is a good alternative to meet the increasing need of the global pulp and paper industry. Meanwhile, the xylem of this species could be a useful bioresource to develop low molecular extractives with significant bioactive potential. In the present work, a phytochemical investigation on aqueous EtOH extractives of Triploid P. tomentosa xylem, by systematical performance of Sephadex LH-20 open column chromatography and Thin Layer Chromatography (TLC), resulted in the isolation of two phenolic acids (ρ-coumaric acid (I) and caffeic acid (II)), two flavonoids (apigenin (III) and luteolin (IV)), and three phenolic glucosides (salicortin (V), salireposide (VI) and populoside (VII)). The structure elucidation and determination of the isolated extractives were based on their spectroscopical data and physiochemical evidences. This was the first time to report the low molecular weight extractives of Triploid P. tomentosa. Various low molecular weight extractives fromTriploid P. tomentosa xylem exhibited significant antioxidative activities by DPPH and hydroxyl radical scavenging assays.

scholarly journals Transcriptome analysis of diploid and triploid Populus tomentosa

PeerJ ◽  
2020 ◽  
Vol 8 ◽  
pp. e10204
Author(s):  
Wen Bian ◽  
Xiaozhen Liu ◽  
Zhiming Zhang ◽  
Hanyao Zhang
Keyword(s):  
Transcriptome Sequencing ◽  
Carbon Fixation ◽  
Wood Quality ◽  
Populus Tomentosa ◽  
Plant Materials ◽  
Young Tree ◽  
Mapk Signalling Pathway ◽  
Expression Of Genes ◽  
Phenylpropanoid Biosynthesis ◽  
Triploid Populus Tomentosa

Triploid Chinese white poplar (Populus tomentosa Carr., Salicaceae) has stronger advantages in growth and better stress resistance and wood quality than diploid P. tomentosa. Using transcriptome sequencing technology to identify candidate transcriptome-based markers for growth vigor in young tree tissue is of great significance for the breeding of P. tomentosa varieties in the future. In this study, the cuttings of diploid and triploid P. tomentosa were used as plant materials, transcriptome sequencing was carried out, and their tissue culture materials were used for RT-qPCR verification of the expression of genes. The results showed that 12,240 differentially expressed genes in diploid and triploid P. tomentosa transcripts were annotated and enriched into 135 metabolic pathways. The top six pathways that enriched the most significantly different genes were plant-pathogen interaction, phenylpropanoid biosynthesis, MAPK signalling pathway-plant, ascorbate and aldarate metabolism, diterpenoid biosynthesis, and the betalain biosynthesis pathway. Ten growth-related genes were selected from pathways of plant hormone signal transduction and carbon fixation in photosynthetic organisms for RT-qPCR verification. The expression levels of MDH and CYCD3 in tissue-cultured and greenhouse planted triploid P. tomentosa were higher than those in tissue-cultured diploid P. tomentosa, which was consist ent with the TMM values calculated by transcriptome.

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