Morphological and biochemical responses of tropical seagrasses (Family: Hydrocharitaceae) under colonization of the macroalgae <i>Ulva reticulata</i> Forsskål

Emmclan, Lau Sheng Hann; Zakaria, Muta Harah; Ramaiya, Shiamala Devi; Ikhsan, Natrah Fatin Mohd; Bujang, Japar Sidik

doi:10.7717/peerj.12821

Cited by 6 publications

(8 citation statements)

References 95 publications

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“…In Malaysia, E. acoroides, T. hemprichii, Halophila ovalis, H. major, and H. spinulosa possessed higher total phenolic and flavonoid contents in the Ulva reticulata-colonized sites than those of the non-colonized sites. Furthermore, sea walls constructed on the coasts of Mactan Island, Philippines, reduced the hydrodynamic forces and water current velocity, resulting in accumulated nutrients in the seagrass beds and favoring the growth of macroalgae as observed in Merambong, Malaysia (Emmclan et al 2022).…”

Section: Resultsmentioning

confidence: 99%

Influence of seagrass traits on the diversity of endophytic fungi

KINAMOT

2024

Biodiversitas

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Abstract. Kinamot VB. 2024. Influence of seagrass traits on the diversity of endophytic fungi. Biodiversitas 25: 1254-1263. The interest in endophytic fungi has grown recently because of their potential to enhance plant growth, tolerate stresses, and modulate phytohormone synthesis. Understanding how plants influence their endophytic fungal assemblage is vital to manipulating them for biotechnological applications. In this study, Bray-Curtis analysis determined the variation of endophytic fungal assemblage among different seagrass species. Leaf/root area, leaf/root dry matter content, leaf mass per area, leaf toughness, and specific leaf area of seagrasses were measured using a standard protocol. The Folin-Ciocalteau method was utilized to quantify the phenolic and tannin contents in seagrasses using tannic acid as standard. Canonical correspondence analysis correlated the influence of seagrass traits on endophytic fungal diversity. Results showed that endophytic fungal diversity varied with seagrass hosts in which higher similarity of the fungal assemblage was observed among the same seagrass species than in different seagrass species. The seagrass traits mediated the variation of endophytic fungi. Phenolic and tannin in seagrasses significantly influenced the diversity of endophytic fungi. An antifungal assay using the methanolic crude extract of seagrasses had 80-100% mycelial growth inhibition to the five species of endophytic fungi tested, which could be accounted for the chemicals like phenol and tannin that the seagrass hosts produce.

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Section: Resultsmentioning

confidence: 99%

Influence of seagrass traits on the diversity of endophytic fungi

KINAMOT

2024

Biodiversitas

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“…[45][46][47][48][49][50] Antioxidants are one of the most important factors in reducing radical compounds in the body to reduce cell damage and ultimately prevent the occurrence of several diseases. 51 Several other types of seagrass such as Enhalus acoroides, Halophila ovalis, Halophila major, and Halophila spinulosa contain flavonoids and phenolics which are commonly known as the largest phytochemical molecules and their antioxidant activity is stronger than vitamins C and E. [52][53][54] Chrysoeriol, one type of flavonoid that is usually studied for its antioxidant effects and is often found in seagrass plants, has a significant effect on increased cell viability, reduced ROS formation, and increased occurrence of antioxidant molecules in H 2 O 2 . In addition, this compound has the ability to suppress peroxidation and has lipid interactions with peroxyl radicals.…”

Section: Discussionmentioning

confidence: 99%

New insight on antioxidants and anti-obesity properties of two seagrasses Thalassia hemprichii and Zostera marina: an integrated molecular docking simulation with in vitro study

Wagey,

Gunawan,

Lasabuda

et al. 2024

F1000Res

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Background The oceans are teeming with a diverse range of marine organisms that offer unique health benefits, such as seagrass which is one of many key marine products that have garnered attention for their potential therapeutic properties. However, until now there have been few successful reports of seagrass’s metabolites profile and biological activity. Therefore, this work aims to profile metabolites or chemical constituents and assess the potential antioxidants and anti-obesity effects of two seagrasses, Thalassia hemprichii and Zostera marina. Methods Once authenticated, T. hemprichii and Z. marina were extracted with two different solvents, polar (ethanol) and nonpolar (hexane). Metabolite profiling was performed using untargeted metabolomic profiling via liquid chromatography coupled to high-resolution tandem mass spectrometry method analysis, and then antioxidant and anti-obesity capabilities were assessed by molecular docking and in vitro studies on selected receptors. Results A total of 9 and 11 metabolites were observed from T. hemprichii and Z. marina and continued molecular docking. Some of the observed compounds have promising potential as inhibitors of human inducible nitric oxide synthase, reactive oxygen species (ROS) 1 kinase, human pancreatic lipase, and fat mass and obesity-associated (FTO) proteins, including luteolin, 6-hydroxy compounds luteolin O-glucoside, luteolin-O-sulphate, Thalassiolin A, Thalassiolin C, kaempferol-7,4′-dimethylether-3-O-sulfate, apigenin, and diosmetin. T. hemprichii ethanol extract (THE) EC50 value shows antioxidant capabilities via ABTS radical scavenging activity of 76.00 μg/mL, a smaller value than standard antioxidant controls (Trolox, 76.54 μg/mL) and followed by EC50 of lipase inhibition activity by THE which has the same pattern (EC50 THE < EC50 Orlistat). Conclusions This concludes that the two seagrasses have promising biological activity as candidates for functional food and/or drugs in combating free radicals and obesity.

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Section: Evidence Of Seaweed-seagrass Positive and Neutral Interactionsmentioning

confidence: 99%

“…Although negative interactions dominate the relationships between seagrasses and macroalgae, there are instances in which positive interactions have been also documented (Ceccherelli and Cinelli, 1999;Ceccherelli and Campo, 2002;Irlandi et al, 2004;Hessing-Lewis et al, 2011;Alexandre et al, 2017;Pereda-Briones et al, 2019;Kalokora et al, 2021;Correia et al, 2022a;Emmclan et al, 2022). While most of these studies have shown that seagrasses could benefit from the presence of macroalgae (Ceccherelli and Campo, 2002;Irlandi et al, 2004;Hessing-Lewis et al, 2011;Pereda-Briones et al, 2019;Kalokora et al, 2021;Emmclan et al, 2022), a couple of studies found the opposite, i.e., a benefit primarily toward the macroalgae (Ceccherelli and Cinelli, 1999;Alexandre et al, 2017;Correia et al, 2022a). The presence of macroalgae has been causally associated with increased seagrass shoot density (Ceccherelli and Campo, 2002), enhanced growth (Kalokora et al, 2021) positive changes in seagrass morphology (Ceccherelli and Campo, 2002;Emmclan et al, 2022), and added protection from low-tide associated stressors, excessive epiphyte cover, hydrodynamic disturbance, and ocean warming (Irlandi et al, 2004;Hessing-Lewis et al, 2011;Pereda-Briones et al, 2019).…”

Section: Evidence Of Seaweed-seagrass Positive and Neutral Interactionsmentioning

confidence: 99%

“…While most of these studies have shown that seagrasses could benefit from the presence of macroalgae (Ceccherelli and Campo, 2002;Irlandi et al, 2004;Hessing-Lewis et al, 2011;Pereda-Briones et al, 2019;Kalokora et al, 2021;Emmclan et al, 2022), a couple of studies found the opposite, i.e., a benefit primarily toward the macroalgae (Ceccherelli and Cinelli, 1999;Alexandre et al, 2017;Correia et al, 2022a). The presence of macroalgae has been causally associated with increased seagrass shoot density (Ceccherelli and Campo, 2002), enhanced growth (Kalokora et al, 2021) positive changes in seagrass morphology (Ceccherelli and Campo, 2002;Emmclan et al, 2022), and added protection from low-tide associated stressors, excessive epiphyte cover, hydrodynamic disturbance, and ocean warming (Irlandi et al, 2004;Hessing-Lewis et al, 2011;Pereda-Briones et al, 2019). Meanwhile, the presence of seagrasses has been shown to enhance nutrient uptake in macroalgae (Alexandre et al, 2017), increase macroalgal density (Correia et al, 2022a), and provide protection against currents, tides, and hydrodynamic disturbance (Ceccherelli and Cinelli, 1999).…”

Section: Evidence Of Seaweed-seagrass Positive and Neutral Interactionsmentioning

confidence: 99%

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Seagrass-macroalgal interactions in a changing ocean

Richard,

Quijón

2023

Front. Clim.

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The number of reports highlighting the services provided by seagrass beds continues to be matched by those reporting on local seagrass declines across the world coastlines. Among the many factors driving the fate of seagrass beds, this Mini Review focuses on the interactions between seagrasses and algae, more specifically, macroalgae. Seagrasses are known to respond to sudden increases in co-occurring macroalgae, and the ongoing warming of ocean waters suggests that these interactions are most likely to grow in frequency and possibly in intensity in the decades ahead. What remains unclear is the nature (positive, neutral, negative) and the local outcome of those interactions. We examined the published evidence on explicit seagrass-algal interactions and found that in most cases these interactions have been negative, with seagrass species most often found at a competitive disadvantage with regards to macroalgae. Rising ocean temperatures are likely to add to this imbalance as at least some studies already suggest that the negative effects of macroalgae and warming are either additive or synergistic. The further examination of these effects will help predict likely future scenarios and aid in the prioritization of conservations efforts.

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Morphological and biochemical responses of tropical seagrasses (Family: Hydrocharitaceae) under colonization of the macroalgae Ulva reticulata Forsskål

Cited by 6 publications

References 95 publications

Influence of seagrass traits on the diversity of endophytic fungi

Influence of seagrass traits on the diversity of endophytic fungi

New insight on antioxidants and anti-obesity properties of two seagrasses Thalassia hemprichii and Zostera marina: an integrated molecular docking simulation with in vitro study

Seagrass-macroalgal interactions in a changing ocean

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