JOURNAL OF PHYCOLOGY藻类学杂志
JOURNAL OF PHYCOLOGY(英文缩写 J PHYCOL),ISSN 0022-3646,eISSN 1529-8817,中文译名:藻类学杂志 是一本学术期刊。本页汇总该期刊的最新影响因子、分区信息以及最新收录于 PubMed 的文献,帮助您快速了解期刊全貌。
发文量统计区间：2025-11-01 至 2026-10-31，按本站收录文献的发表日期统计。
期刊介绍
历年影响因子趋势
| JCR 数据年份 | 影响因子 | JCR 分区 |
|---|---|---|
| 2021 | 3.173 | Q1 |
| 2022 | 2.900 | Q1 |
| 2023 | 2.800 | Q1 |
| 2024 | 3.400 | Q1 |
| 2025 | 4.300 | Q1 |
JOURNAL OF PHYCOLOGY 最新收录文献
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1. Genome-wide association study of morphometric and metabolic characteristics in European populations of the sugar kelp Saccharina latissima.
1. 糖海带（Saccharina latissima）欧洲种群形态计量与代谢特征的全基因组关联研究PMID:日期:2026-09-26The sugar kelp Saccharina latissima is a promising candidate for sustainable aquaculture in the North Atlantic and Northeast Pacific, but genetic improvement has been hindered by a limited understanding of the genetic basis of economically important traits. We conducted a genome-wide association study (GWAS) for this species using 202 self-fertilized pseudo-F1 individuals derived from 12 of 13 sampled populations spanning northern and southern European genetic clusters. Individuals were genotyped with ddRAD-seq-derived single nucleotide polymorphism markers and phenotyped in a common-garden experiment for four morphological traits (blade length, blade width, blade area, and stipe length) and six metabolic traits related to nitrogen metabolism. We identified 18 significant marker-trait associations, with individual loci explaining 1.37% to 10.93% of phenotypic variance (PVE). Rather than major-effect quantitative trait locus (QTL), the associated loci each accounted for a small-to-moderate proportion of trait variance, the largest being for nitrogen-metabolism traits (up to 10.93% PVE), and a single locus on chromosome 17 influenced both blade length and blade area. Marker-based heritability was high for morphological traits (0.75-0.99) but ranged widely for metabolic traits (0-0.99), with large standard errors throughout. Cross-validated genomic selection models yielded predictive abilities of 0.21-0.59 across traits, the only exception being for protein content, for which both heritability and predictive ability were effectively null. Overall, these results indicate a mixed genetic architecture, comprising moderate-effect loci amenable to marker-assisted selection and polygenic traits better suited to genomic selection, and they provide a foundation for genomics-assisted breeding in kelp aquaculture.
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2. Lithochloron, a new genus of green algae residing in coral skeleton (Cladophorales, Chlorophyta).
2. 石绿藻属，一种栖息于珊瑚骨骼中的绿藻新属（刚毛藻目，绿藻门）PMID:日期:2026-09-24Coral skeletons host diverse microbial communities, including endolithic green algae that contribute to holobiont functioning. The siphonous green alga Ostreobium (Bryopsidales) is arguably the best-known coral endolith, but recent environmental sequencing has indicated that other lineages of green algae may also inhabit the coral skeleton, including members of the Cladophorales. Here, we characterize a new endolithic green alga isolated from a Porites coral skeleton collected from Heron Island on the southern Great Barrier Reef. The alga forms uniseriate, sparsely branched grass-green filaments composed of elongated vegetative cells with infrequent cross walls. Phylogenetic analyses of 18S and 28S nrDNA gene sequences placed the strain as an early-diverging lineage within the Siphonocladus clade of the Cladophorales order of the Ulvophyceae. Based on morphological and molecular evidence, we describe the alga as the new genus and species Lithochloron capricornicum. Analysis of environmental 18S nrDNA gene amplicon data from Great Barrier Reef corals revealed extensive sequence diversity, suggesting the genus has additional yet undescribed species. Environmental sequencing further showed that it is most abundant at intermediate depths within the coral skeleton and suggested niche differentiation with Ostreobium along the vertical light gradient in the skeleton, with Lithochloron tending to peak at shallower depths than Ostreobium. The discovery of Lithochloron challenges the long-standing assumption that Ostreobium is the only dominant green algal endolith in coral skeletons and highlights the underestimated diversity of endolithic algae more broadly.
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3. Extensive induction of diploid aposporous gametophytes and their application in polyploid breeding of Undaria pinnatifida.
3. 二倍体无配子生殖配子体的大规模诱导及其在裙带菜多倍体育种中的应用PMID:日期:2026-09-18Triploid breeding is a promising strategy for developing Undaria pinnatifida cultivars with higher yield, better quality, and stronger resistance to environmental stresses. We previously developed a triploid breeding method through crossing aposporous gametophytes derived from doubled haploid sporophytes with haploid gametophytes. However, only one male diploid aposporous gametophyte line was obtained. In the present study, we extensively induced three kinds of aposporous gametophytes, namely MoAG, PaAG, and CAG, from sporophytes derived, respectively, from selfing of monoicous gametophytes, parthenogenesis of female gametophytes, and cross-fertilization. We found that all the MoAGs were diploid and monoicous, the PaAGs all female and either diploid or haploid, and the CAGs all monoicous and either diploid or haploid. Parentage analysis revealed that cross-fertilization predominated when crossing the monoicous aposporous gametophytes with female haploid gametophytes. Triploid sporophyte lines were extensively generated by crossing the diploid gametophytes with haploid gametophytes. Six out of 17 triploid lines exhibited significantly superior comprehensive economic traits after cultivation in the sea and are therefore promising candidate cultivars for larger scale cultivation. Tetraploid sporophytes were obtained through selfing of diploid monoicous gametophytes. This study lays a solid foundation for polyploid breeding and development of superior cultivars in U. pinnatifida.
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4. EBA-Net: A hybrid EfficientNetB3-BiLSTM-Attention model for species-level diatom classification.
PMID:日期:2026-09-18Species identification in diatoms is important for assessing water bodies, determining environmental quality, and analyzing biodiversity. Nonetheless, diatom classification has proven difficult due to intra-class variation, interclass similarity, and data imbalance in microscopic images. In this regard, we propose a new deep learning approach for species-level diatom classification. Various deep learning models, including traditional convolutional neural networks or CNNs (ResNet50, DenseNet121), state-of-the-art CNNs (EfficientNetB3, Xception, MobileNetV3), transformer-based architectures (ViT-B16, Swin-Tiny), and our proposed EBA-Net (EfficientNetB3-BiLSTM-Attention Network), were extensively compared under identical experimental settings. The EBA-Net integrates the advantages of convolutional feature extraction, sequence modeling, and an attention mechanism to improve classification accuracy. It first uses the EfficientNetB3 model as the backbone network to obtain higher-level features, followed by a BiLSTM layer to capture dependencies among the extracted features. Then, it applies the attention mechanism to the BiLSTM output to highlight the most informative features. Experimental results showed that the proposed EBA-Net model outperforms other models considered in the study, yielding 95.8% accuracy and 85.1% macro F1-score. In addition, Top-3 (98.9%) and Top-5 (99.6%) accuracies confirmed the efficiency of the proposed model for classifying objects from visually similar classes. An analysis of the model's interpretability was conducted using Gradient-weighted Class Activation Mapping, showing that the proposed model's attention is concentrated on relevant morphological features of diatoms. To the best of our knowledge, the suggested approach achieves state-of-the-art accuracy on the data set of diatoms used.
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5. Circumscription of three new taxa of Merismopedia-like Cyanobacteria shows how far convergent evolution can go.
5. 三种新发现的类片藻属蓝细菌的分类界定展示了趋同进化可以达到的程度PMID:日期:2026-09-18The genus Merismopedia (Merismopediaceae, Chroococcales), characterized by rectangular colonies with cells arranged in regular perpendicular rows and columns, represents a challenging study system due to its limited cultivability. The genus recently underwent taxonomic revision using cultivation-independent techniques and a polyphasic approach. Following the designation of an epitype, its type species, M. tranquilla was placed within a phylogenetic framework. Polyphyletic "Merismopedia" was split, and its species clustered within at least three distinct families. The case represents a clear example of convergent evolution, a phenomenon not uncommon among Cyanobacteria. The present study further explores the convergent evolution of Cyanobacteria with colonies exhibiting regularly perpendicular cell rows. Using predominantly a single-colony sequencing approach, partial 16S rRNA gene and ITS rRNA region sequence data were obtained for four additional Merismopedia morphotypes. Phylogenetic analyses supported the placement of two of these taxa within a recently described genus Eucapsopsis. Accordingly, two new species are proposed: Eucapsopsis complanata, distinguished by its loosely arranged cells, and Eucapsopsis sphagnicola, a new combination for Merismopedia sphagnicola, typically occurring in oligotrophic peat bogs. Furthermore, the description of a morphologically cryptic genus Cryptoplanktopedia is presented. A strain identified as "Merismopedia" cf. angularis NIVA-CYA 199, characterized by its L-shaped colonies, clustered as another distant lineage within Chroococcales although with ambiguous systematic placement. The results demonstrate that Merismopedia-like colony morphology is a widespread trait and has evolved convergently among Cyanobacteria.
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6. {"_":"Improved primary production and gross respiration measurements using the H O technique with membrane inlet mass spectrometry and introduction of a small volume-uniform irradiance incubation chamber.","sub":["2"],"sup":["18"]}
PMID:日期:2026-09-17An improvement in the H O technique for phytoplankton gross primary productivity (GPP), net primary productivity (NPP), and gross respiration (GR) is described that reduces cost, labor, and time over the traditional isotope ratio mass spectrometer (IRMS) method. Membrane inlet mass spectrometry (MIMS) was optimized to measure small (3 mL) samples with low isotope enrichment (1% O) and at high analytical precision (~1 per mil). A photosynthetron was used to measure up to 10-point light curves of GPP, NPP, and GR using a total of 50 mL of sample water with an isotope cost of <$15 per experiment. A new incubation device is described, a Coronatron, that allows up to 12 samples with nutrient manipulation under uniform irradiance. Example light curves from highly contrasting natural water samples are presented that show elevated GPP relative to NPP and substantial light-stimulated GR. To highlight the improved method, examples nutrient manipulation curves are also presented showing GPP, NPP, and GR as a function of changes in ambient nitrate concentrations and different temperatures under constant light.
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7. Bridging the gap between genomic, phenotypic, and modeling data in picophytoplankton-virus interactions.
7. 弥合超微浮游植物与病毒相互作用中基因组、表型和建模数据之间的鸿沟PMID:日期:2026-09-16We present a comprehensive synthesis of recent developments in methodological approaches to combine experimental and genomic studies of picophytoplankton-virus interactions. This synthesis will not only enhance our understanding of these relationships but also stimulate new hypotheses for the interpretation of metagenomic data and enrich current modeling efforts. Marine picophytoplankton are significant primary producers despite their low contribution to biomass. Pan-oceanic metagenomic studies have revealed an astounding genetic diversity within these communities and the astronomical abundance of viruses that infect them. Despite recent advances in understanding the genetic and genomic diversity of picophytoplankton and viruses, the interpretation of these data relies heavily on ecological and physiological insights. Specifically, our understanding of the mechanisms and dynamics governing host-virus interactions is limited because the current wealth of sequence data has not yet been matched with corresponding life-history traits. Linking phenotypes to genotypes in picophytoplankton-virus systems is also essential for accurately modeling their interactions and their impact on the global carbon cycle. Ultimately, the synergy of the three domains allows for a mechanistic interpretation of environmental data.
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8. Macroalgae respond to consumer-mediated nutrient cycling in a temperate ecosystem.
8. 大型海藻对温带生态系统中消费者介导的营养循环作出响应PMID:日期:2026-09-10Primary production in coastal upwelling regions has often been presumed to be supported primarily by allochthonous nutrients, but inconsistent nutrient delivery and the metabolic cost of nitrate assimilation can leave producers nitrogen limited during the growing season. As a potential supplement for insufficient allochthonous supply, nutrient provisioning through the metabolic wastes of animals, termed consumer-mediated nutrient cycling (CNC), provides easily assimilated nitrogen in the form of ammonium. Although it has been suggested that CNC sustains macroalgal growth on the west coast of North America, experimental fertilization experiments, especially on kelps, are lacking. Here, we measured the growth rates of winged kelp (Alaria marginata) and sea lettuce (Ulva sp.) under ammonium levels that varied experimentally in the laboratory as well as naturally across sites in the wild. We observed evidence that in the field, a regionally high-nitrate environment, elevated ammonium was associated with 1.4× higher growth and 1.2× higher percent nitrogen content in A. marginata. Using in situ mesocosms, we observed that Ulva grew 3.8× faster and had 1.4× higher internal nitrogen concentration when exposed to nitrogen-rich excretion from red rock crabs (Cancer productus). Our study suggests kelps growing in low ammonium but higher nitrate conditions may be nitrogen limited, suggesting that nitrates from allochthonous sources may not meet the nutrient requirements of macroalgae in this moderate upwelling ecosystem. Therefore, nutrient regeneration by animals may be an important source of nitrogen across varying levels of allochthonous nitrate supply.
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9. Genome-scale insights into metabolic streamlining and photosynthetic energy balance in the extremophile green alga Picocystis salinarum (Picocystophyceae, Chlorophyta).
9. 极端嗜盐绿藻Picocystis salinarum（Picocystophyceae，绿藻门）代谢精简与光合能量平衡的基因组尺度解析PMID:日期:2026-09-10Picocystis salinarum is an early-diverging chlorophyte and the sole described member of the Picocystophyceae, frequently dominating hypersaline and alkaline lakes despite extreme physicochemical constraints. To elucidate the genomic foundations of its ecological success, we generated a fully annotated, chromosome-scale nuclear genome assembly of the type strain originally isolated from a saline pond in San Francisco Bay. The 18.5-Mb genome comprises 30 chromosomal assemblies, exhibits clear diploidy, and contains multiple copies of intact Ty3/Gypsy and Ty1/Copia long terminal repeat retrotransposons encoding polyproteins with atypical accessory domains. Phylogenomic analyses reveal strong affinity with the Nephroselmidophyceae. Comparative analyses reveal extensive metabolic streamlining, including the absence of a queuosine salvage pathway, the 2-methylcitrate cycle, β-oxidation of propionate, and branched-chain amino acid catabolism, traits retained in several marine prasinophyte lineages. In contrast, the genome preserves multiple ancestral bacterial derived systems. Notably, P. salinarum features a complete chloroplast NADH dehydrogenase-like complex, including all membrane, electron binding, and assembly components, a configuration not previously reported in sequenced chlorophyte algae. This retention implies substantial capacity for cyclic electron flow and chlororespiration, processes expected to be critical in chronically low-light and chemically extreme environments. The genome further reveals a distinctive biochemical CO-concentrating mechanism centered on plastid-targeted phosphoenolpyruvate carboxykinase, complete plastid peptidoglycan biosynthetic and remodeling pathways, and partial retention of lipid-A-related machinery. Conversely, P. salinarum lacks canonical non-photochemical quenching proteins while retaining xanthophyll-cycle enzymes that support slower photoprotective responses. Together, these features define a coordinated genomic architecture that underpins the specialization of P. salinarum to hypersaline, alkaline, and persistently low-light ecosystems.
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10. Identifying thermally tolerant bull kelp (Nereocystis luetkeana) source populations for restoration under climate change.
10. 识别耐热性公牛海带（Nereocystis luetkeana）源种群以用于气候变化下的恢复PMID:日期:2026-09-10Kelp forests are declining in many parts of the world due to climate change and other stressors. Restoration is one solution to return kelp forests to places where they have been lost, yet continually warming oceans may necessitate the identification of thermally tolerant strains to facilitate the long-term success of kelp restoration. The Salish Sea is a waterway in British Columbia, Canada, and Washington State, United States, where ocean temperatures increasingly exceed the thermal limit for bull kelp (Nereocystis luetkeana), causing substantial losses along parts of its range. To identify thermally tolerant source material, we cultured bull kelp sourced from five populations along a thermal gradient in the northern Salish Sea and outplanted them in a common garden experiment at a warm site where bull kelp has been extirpated: Maude Reef on Hornby Island. We tracked stipe length, blade elongation, blade condition, sorus formation, and persistence. Kelp from the nearest cool site reached the largest sizes overall and produced the most sori. In the warm summer, kelp from the nearest warm site had significantly greater blade elongation rates and persisted longer than kelp from distant sites. Blade opacity did not show any distinct pattern, suggesting that loss of photosynthetic pigmentation is likely not the mechanism or consequence of observed differences in growth rate. Significant population-level variation in growth and blade condition may hint at possible adaptive strategies for heat avoidance in bull kelp. From these findings, we suggest population sourcing or mixture strategies that may increase restoration success.