Chromosome-level genome assembly for the ecologically and economically important alga Saccharina japonica.

Saccharina japonica is a major kelp species of brown algae with the highest production among aquaculture seaweeds and holds important ecological and economic value. Despite advancements in domestication, a high-quality chromosome-level genome assembly is needed to assist its genetic improvement. Previous genome assemblies of S.

Evidence of sterility of the male sporophytes of the brown alga Saccharina japonica (Phaeophyceae) in culture irrespective of their ploidy levels.

Monoclonal female gametophytes of Saccharina japonica, when cultured independently, can develop into female sporophytes. Previous research has shown that the chromosomes in female sporophytes of S. japonica may naturally duplicate, forming diploids, and these diploid female sporophytes are capable of forming sori and releasing zoospores.

Comparison of functional characterization of cancer stem cells in different tumor tissues of pseudomyxoma peritonei.

Background: Pseudomyxoma peritonei (PMP) is a rare malignant peritoneal tumor that readily recurs and metastasizes. Studies have shown that cancer stem cells (CSCs) play an important role in tumor recurrence, metastasis, and prognosis.

Objective: In this study, our aim was to isolate CSCs from various tissues of PMP patients and compare their proliferation, migration, and anti-inflammatory abilities.

Alleviative Effect of Iodine Pretreatment on the Stress of (Phaeophyceae, Laminariales) Caused by Cadmium and Its Molecular Basis Revealed by Comparative Transcriptomic Analysis.

Iodide is accumulated by the brown alga at a high concentration and has been proven to be an inorganic antioxidant that plays an important role in oxidative metabolism. Vanadium-dependent bromoperoxidases (vBPOs) and iodoperoxidases (vIPOs), which catalyze the oxidation of iodide, are essential for iodine accumulation and metabolism. Heavy metal pollutant cadmium (Cd) from anthropogenic activities can cause damage to algae mainly by producing oxidative stress.

Identification of a genomic region linked with sex determination of Undaria pinnatifida (Alariaceae) through genomic resequencing and genetic linkage analyses of a segregating gametophyte family.

Different from the traditional knowledge about kelp, three sexual phenotypes (female, male, and monoecious) exist in the haploid gametophytes of Undaria pinnatifida. However, the sex-determining mechanisms remain unknown. Genetic linkage mapping is an efficient tool to identify sex-linked regions.

Preoperative systemic chemotherapy does not benefit for appendiceal pseudomyxoma peritonei.

Background: Pseudomyxoma peritonei (PMP) is a clinically malignant tumour syndrome mainly derived from mucin-producing appendiceal tumours. This study aimed to explore the effect of preoperative systemic chemotherapy (PSC) before cytoreductive surgery (CRS) plus hyperthermic intraperitoneal chemotherapy (HIPEC) on the safety and postoperative survival in patients with appendiceal PMP.

Methods: We performed a retrospective analysis including consecutive patients with PMP undergoing primary surgery between January, 2008 and December, 2019 in Aerospace Center Hospital.

Breeding in the Economically Important Brown Alga : A Concise Review and Future Prospects.

is the commercially second most important brown alga in the world. Its global annual yield has been more than two million tonnes since 2012. It is extensively cultivated in East Asia, mainly consumed as food but also used as feed for aquacultural animals and raw materials for extraction of chemicals applicable in pharmaceutics and cosmetics.

Complete Cytoreductive Surgery vs. Debulking Surgery for pseudomyxoma peritonei of appendiceal origin: A propensity score-matched study based on a single-center experience.

Objective: This study aimed to report the prognostic predictors and compare the long-term outcomes of complete cytoreductive surgery (CCRS) vs. debulking surgery (DS) in patients with pseudomyxoma peritonei (PMP) of appendiceal origin.

Methods: A retrospective analysis of 1008 consecutive patients with PMP undergoing primary surgery from January 2008 to December 2019 was performed.

The Inheritable Characteristics of Monoecy and Parthenogenesis Provide A Means for Establishing A Doubled Haploid Population in the Economically Important Brown Alga Undaria pinnatifida (Laminariales, Alariaceae).

Monoecy and parthenogenesis exist in certain male and female gametophytes of the brown alga Undaria pinnatifida. The inheritance of these traits is not known. In this study, we made a cross between a male and a female gametophyte clone which could exhibit monoecy and parthenogenesis phenotypes, respectively, and obtained their next-generation gametophyte offspring.

The mutational landscape and prognostic indicators of pseudomyxoma peritonei originating from the ovary.

Pseudomyxoma peritonei (PMP) is a rare disorder with unique pathological and genetic changes. Although several studies have reported the clinical features and mutational changes of PMP that originates from the appendix, few studies on PMP originating from the ovary have been reported due to its extreme rarity. In order to characterize the somatic mutational landscape and to investigate the prognosis predicting factors of ovary-originating PMP, we examined 830 cases of PMP and identified 16 patients with PMP that originated from the ovary.

A method to establish an "immortalized F " sporophyte population in the economic brown alga Undaria pinnatifida (Laminariales: Alariaceae).

Studies of quantitative trait loci based on genetic linkage maps require the establishment of a mapping population. Permanent mapping populations are more ideal than temporary ones because they can be used repeatedly. However, there has been no reported permanent sporophyte population of economically important kelp species.

Effects of Cobalt on Spore Germination, Gametophyte Growth and Gametogenesis of Undaria pinnatifida (Phaeophyceae).

With rapid development of the construction of nuclear power plants along the coast, the concern of negative effects of potentially unexpected release of nuclides on marine organisms has increased. Cobalt (Co) is one of the crucial nuclides in nuclear polluted seawater. The effect of its presence in seawater on life cycle of macroalgae has seldom been studied.

Transcriptome profiling of the meristem tissue of Saccharina japonica (Phaeophyceae, Laminariales) under severe stress of copper.

Copper (Cu) is an essential metal involved in many physiological processes of living organisms. However, beyond a certain threshold, Cu can become highly toxic. For instance, in the summer sporeling production of the economic kelp Saccharina japonica, the excess Cu accidently released from the low-quality alloys of the refrigerating machine was deadly to the seedlings and led to the failure of hatchery operations.

Phytoremediation Potential of Saccharina japonica and Sargassum horneri (Phaeophyceae): Biosorption Study of Strontium.

Strontium (Sr) is an important nuclide in nuclear polluted seawater. Algal biosorption is regarded as an efficient and cost-effective way to scavenge detrimental metal ions of low concentration from polluted waters. In this study, we selected two algal species (Saccharina japonica and Sargassum horneri) through comparing background Sr contents in six algal species and explored their potential to scavenge Sr of low concentration from seawater in culture conditions.

Construction of a high-density genetic map and mapping of a sex-linked locus for the brown alga Undaria pinnatifida (Phaeophyceae) based on large scale marker development by specific length amplified fragment (SLAF) sequencing.

Background: Undaria pinnatifida is an important economic brown alga in East Asian countries. However, its genetic and genomic information is very scarce, which hinders further research in this species. A high-density genetic map is a basic tool for fundamental and applied research such as discovery of functional genes and mapping of quantitative trait loci (QTL).

Mitochondrial genome of Turbinaria ornata (Sargassaceae, Phaeophyceae): comparative mitogenomics of brown algae.

Turbinaria ornata (Turner) J. Agardh is a perennial brown alga native to coral reef ecosystems of tropical areas of the Pacific and Indian Ocean. Very little is known about its organellar genome structure.

Mitochondrial genome of Sargassum thunbergii: conservation and variability of mitogenomes within the subgenus Bactrophycus.

Sargassum thunbergii (Mertens ex Roth) Kuntze is a common brown seaweed in rocky intertidal zones along the northwestern Pacific coast. In the present study, we sequenced and annotated the complete mitochondrial genome of S. thunbergii.

Complete mitochondrial genome of the brown alga Colpomenia peregrina (Scytosiphonaceae, Phaeophyceae): genome characterization and comparative analyses.

Colpomenia peregrina Sauvageau has a biphasic, heteromorphic life history alternated with saccate gametophytes and crustose sporophytes. The circular C. peregrina mitogenome is 36,025 bp in length and encodes 66 genes, including 3 ribosomal RNA genes (rRNA), 25 transfer RNA genes (tRNA), 35 protein-coding genes, and 3 open reading frames (ORFs).

Complete mitochondrial genome of the brown alga Scytosiphon lomentaria (Scytosiphonaceae, Phaeophyceae).

We determined the complete mitochondrial genome of Scytosiphon lomentaria (Lyngbye) Link, which is the first representative of the genus Scytosiphon C. Agardh. The circular mitogenome of S.

Complete mitochondrial genome of the brown alga Sargassum hemiphyllum (Sargassaceae, Phaeophyceae): comparative analyses.

Sargassum hemiphyllum (Turner) C. Agardh is a common low intertidal brown alga in the northwestern Pacific, and two varieties (var. chinense and var.

Complete mitochondrial genome of the brown alga Sargassum fusiforme (Sargassaceae, Phaeophyceae): genome architecture and taxonomic consideration.

Sargassum fusiforme (Harvey) Setchell (=Hizikia fusiformis (Harvey) Okamura) is one of the most important economic seaweeds for mariculture in China. In this study, we present the complete mitochondrial genome of S. fusiforme.

Complete mitochondrial genome of the invasive brown alga Sargassum muticum (Sargassaceae, Phaeophyceae).

Sargassum muticum (Yendo) Fensholt is an invasive canopy-forming brown alga, expanding its presence from Northeast Asia to North America and Europe. The complete mitochondrial genome of S. muticum is characterized as a circular molecule of 34,720 bp.

Understanding the recurrent large-scale green tide in the Yellow Sea: temporal and spatial correlations between multiple geographical, aquacultural and biological factors.

The coast of Jiangsu Province in China - where Ulva prolifera has always been firstly spotted before developing into green tides - is uniquely characterized by a huge intertidal radial mudflat. Results showed that: (1) propagules of U. prolifera have been consistently present in seawater and sediments of this mudflat and varied with locations and seasons; (2) over 50,000 tons of fermented chicken manure have been applied annually from March to May in coastal animal aquaculture ponds and thereafter the waste water has been discharged into the radial mudflat intensifying eutrophication; and (3) free-floating U.

CONTROL OF REPRODUCTION RHYTHMICITY BY ENVIRONMENTAL AND ENDOGENOUS SIGNALS IN ULVA PSEUDOCURVATA (CHLOROPHYTA)(1).

A field population of Ulva pseudocurvata Koeman et C. Hoek (hereafter termed Ulva) at Sylt Island (North Sea, Germany) exhibited biweekly peaks of gametophytic reproduction during the colder seasons and approximately weekly peaks during summer. The reproductive events lasted 1-5 d and were separated from each other by purely vegetative phases.