Properties of Enzyme Pretreated Wikstroemia sikokiana and Broussonetia papyrifera Bast Fiber Pulps

Lin, Li-Hung; Chang, Feng-Cheng; Ko, Chun-Han; Wang, C.-Y.; Wang, Yanan

doi:10.15376/biores.10.2.3625-3637

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…The species are mostly fibrous trees, shrubs or subshrubs with a woody rhizome. Several species are cultivated as raw material for pulp production 2 , 3 , while a handful of them are reported to have medicinal properties 4 , 5 . However, studies of Wikstroemia have been confined to its utilization in pulp production and pharmacological applications; reports on genetic studies of Wikstroemia are scarce.…”

Section: Introductionmentioning

confidence: 99%

Complete plastomes of six species of Wikstroemia (Thymelaeaceae) reveal paraphyly with the monotypic genus Stellera

Zhang

Lee

2021

Sci Rep

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Wikstroemia (Thymelaeaceae) is a diverse genus that extends from Asia to Australia and has been recorded on the Hawaiian Islands. Despite its medicinal properties and resource utilization in pulp production, genetic studies of the species in this important genus have been neglected. In this study, the plastome sequences of six species of Wikstroemia were sequenced and analysed. The plastomes ranged in size between 172,610 bp (W. micrantha) and 173,697 bp (W. alternifolia) and exhibited a typical genome structure consisting of a pair of inverted repeat (IR) regions separated by a large single-copy (LSC) region and a small single-copy (SSC) region. The six plastomes were similar in the 138 or 139 genes predicted, which consisted of 92 or 93 protein-coding genes, 38 tRNA genes, and 8 rRNA genes. The overall GC contents were identical (36.7%). Comparative genomic analyses were conducted with the inclusion of two additional published species of Wikstroemia in which the sequence divergence and expansion of IRs in the plastomes were determined. When compared to the coding sequences (CDSs) of Aquilaria sinensis, five genes, namely, rpl2, rps7, rps18, ycf1 and ycf2, indicated positive selection in W. capitata. The plastome-based phylogenetic analysis inferred that Wikstroemia in its current state is paraphyletic to Stellera chamaejasme, while the ITS-based tree analyses could not properly resolve the phylogenetic relationship between Stellera and Wikstroemia. This finding rekindled interest in the proposal to synonymize Stellera with Wikstroemia, which was previously proposed but rejected due to taxonomic conflicts. Nevertheless, this study provides valuable genomic information to aid in the taxonomic implications and phylogenomic reconstruction of Thymelaeaceae.

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Section: Introductionmentioning

confidence: 99%

Complete plastomes of six species of Wikstroemia (Thymelaeaceae) reveal paraphyly with the monotypic genus Stellera

Zhang

Lee

2021

Sci Rep

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“…Paper mulberry ( Broussonetia papyrifera ) is a multipurpose tree or shrub belonging to the Moraceae [ 1 ] that mainly grows in eastern Asia and the Pacific islands [ 2 , 3 , 4 ]. Each organ of the tree species is valuable: bark fiber is an excellent raw material for paper-making and a potential bio-ethanol feedstock [ 5 , 6 , 7 ] and young shoots have a high feed and nutritional value [ 8 ]. There are many medicinal uses for paper mulberry as a source of flavonoids, terpenoids, polyphenols, alkaloids, and other compounds [ 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

An efficient protocol for regenerating shoots from paper mulberry (Broussonetia papyrifera) leaf explants

et al. 2020

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AbstractPaper mulberry (Broussonetia papyrifera) is a tree species that has many economic, ecological, and social uses. This study developed an efficient protocol for regenerating shoots from leaf explants using Murashige and Skoog (MS) medium supplemented with different concentrations of plant growth regulators (PGRs), which play vital roles in shoot regeneration. The best result, 86.67% induction frequency and 4.35 shoots per explant, was obtained in the MS medium containing 2.0 mg/L N6-benzyladenine (BA) and 0.05 mg/L indole-3-butyric acid. The effects of explant age, orientation, and genotype were also investigated. Explants from young leaves had a greater regeneration frequency than those from old leaves, and the results were better when the distal end of the leaf explant contacted the medium versus the proximal end. Approximately 70.96% of the shoots rooted well in the MS medium containing 0.4 mg/L α-naphthalene acetic acid (NAA). Although some genotypes achieved poorer results, the regeneration protocol is still applicable for mass multiplication and genetic transformation.

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“…The species are mostly brous trees, shrubs or subshrubs with a woody rhizome. Several species are cultivated as raw material for pulp production [2,3], while a handful of them are reported to have medicinal properties [4,5].…”

Section: Introductionmentioning

confidence: 99%

Characterization and phylogenetic analysis of the complete chloroplast genome sequences of six species of Wikstroemia (Thymelaeaceae) revealed paraphyletic relationship to the monotypic genus Stellera.

Zhang¹,

Lee²

2020

Preprint

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Wikstroemia (Thymelaeaceae) is a diverse genus, spanning both Asia and Australia and also recorded from the Hawaiian Islands. However, due to its medicinal properties and resource utilization in pulp production, genetic studies on these important species have been overshadowed. In this study, the chloroplast genome sequences of six species of Wikstroemia were sequenced and analyzed. The chloroplast genomes of the six species ranged between 172,610 bp (W. micrantha) and 173,697 bp (W. alternifolia), and exhibited a typical genome structure consisting of a pair of inverted repeat (IR) regions separated by a large single-copy (LSC) region and a small single-copy (SSC) region. The six chloroplast genomes were similar with a predicted 139 genes that consisted of 92 or 93 protein-coding genes, 38 tRNA genes, and 8 rRNA genes. The overall GC contents were identical (36.7%). Genome comparative analyses were conducted with the inclusion of two additional published species of Wikstroemia in which the sequence divergence and expansion of IRs in the chloroplast genomes were determined. The phylogenetic analysis inferred that Wikstroemia in its current circumscription is paraphyletic to Stellera chamaejasme, while the ITS-based tree analyses could not properly resolve the phylogenetic relationship between Stellera and Wikstroemia. This finding kindled interest in the proposal to synonymize Stellera with Wikstroemia, which was previously brought up, but rejected due to taxonomic conflicts. Nevertheless, this study provides valuable genomic information to aid in the taxonomic implications and phylogenomic reconstruction of Thymelaeaceae.

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Properties of Enzyme Pretreated Wikstroemia sikokiana and Broussonetia papyrifera Bast Fiber Pulps

Cited by 8 publications

References 21 publications

Complete plastomes of six species of Wikstroemia (Thymelaeaceae) reveal paraphyly with the monotypic genus Stellera

Complete plastomes of six species of Wikstroemia (Thymelaeaceae) reveal paraphyly with the monotypic genus Stellera

An efficient protocol for regenerating shoots from paper mulberry (Broussonetia papyrifera) leaf explants

Characterization and phylogenetic analysis of the complete chloroplast genome sequences of six species of Wikstroemia (Thymelaeaceae) revealed paraphyletic relationship to the monotypic genus Stellera.

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