Secretion mechanism and adhesive mechanism of diatoms: Direct evidence from the quantitative analysis

Guan, Yu; Chen, Rongrong; Sun, Gaohui; Liu, Qi; Liu, Jingyuan; Yu, Jing; Wang, Jun

doi:10.1016/j.micron.2020.102951

Cited by 9 publications

(5 citation statements)

References 42 publications

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“…According to the study results of Godillot et al (2001), diatoms species are more adaptable to attach to the substrate as periphyton in waters. Therefore, diatoms will be more commonly found as periphyton in various aquatic environments because they have a better ability to attach to the substrate (Guan et al 2021).…”

Section: Resultsmentioning

confidence: 99%

Pollution level of Banjaran River, Banyumas District, Indonesia: A study based on the Saprobic Index of periphytic microalgae

Samudra

Fitriadi²,

Baedowi³

et al. 2022

Biodiversitas

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Abstract. Samudra SR, Fitriadi R, Baedowi M, Sari LK. 2022. Pollution level of Banjaran River, Banyumas District, Indonesia: A study based on the Saprobic Index of periphytic microalgae. Biodiversitas 23: 1527-1534. The saprobic index of periphytic microalgae can be used to determine the level of water pollution based on the number and composition of species. Banjaran River is one of the rivers in the Banyumas District, Central Java, Indonesia, which is widely used by the local people for daily activities. The increase of domestic and agricultural activities in the river triggers an increase in the pollutants input into the river. This study aims to determine the status of the waters in the midstream of Banjaran River by using the periphytic microalgae saprobic index as a bioindicator of water quality. Purposive sampling method was used in this study by establishing four stations and five replications at each station. The result showed that the abundance of periphytic microalgae ranged from 7,547-8,733 cells/cm2; the diversity index ranged from 1.64-2.07 (moderately polluted waters); the dominance index ranged from 0.21-0.26 (no particular species of periphytic microalgae dominating the four stations); and saprobic index value of Banjaran River ranged from 1.00 to 1.03 which indicates that Banjaran River belongs to ?-meso/oligo saprobic water. In other words, it was water with a light pollution level. An action to reduce organic pollution is necessary, one of which is by reducing the people's activities such as washing and disposing of household waste into the river so that the condition of Banjaran River can be maintained properly and reduce pollution in its subsequent river flows.

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Section: Resultsmentioning

confidence: 99%

Pollution level of Banjaran River, Banyumas District, Indonesia: A study based on the Saprobic Index of periphytic microalgae

Samudra

Fitriadi²,

Baedowi³

et al. 2022

Biodiversitas

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“…Several aquatic organisms have evolved to achieve rapid and robust attachment to various materials underwater through synthesising, secreting, and curing biological adhesives (Gan et al, 2022). Naturally produced adhesives are common in many biological systems: bacteria, spiders, marine tubeworms, sea cucumbers, barnacles, mussels, and diatoms (Silverman and Roberto, 2007;Guan et al, 2021;Sun et al, 2023). Mussels are capable of strong underwater adhesion to a variety of surfaces through the synergistic effect of lysine, which displaces the water molecules at the interface, and 3,4-dihydroxyphenylalanine, which interacts with the surface (Shin et al, 2020).…”

Section: Modification Of Surface Adhesionmentioning

confidence: 99%

Bioinspired building materials—lessons from nature

Sandak,

Butina Ogorelec

2023

Front. Mater.

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Systems found in nature are a valuable source of inspiration for several applications. Scientists and researchers from different fields (structural engineering, robotics, medicine, and materials science) use the concepts of biomimicking, biomimetics, and bioinspiration. More recently the possibility to benefit from solutions developed by nature has become of interest for sustainable architecture. Living organisms use smart, optimised, and elegant solutions to survive, thanks to continuous selection and mutation processes. For over 460 million years plants have been evolving in a constantly changing environment and have become well-adapted to different climatic conditions. Faced with several challenges (water loss, extreme temperatures, UV radiation, etc.) plants, for example, developed tissues with barrier properties. Furthermore, due to their immobility, plants are excellent biological materials for detecting climate phenomena. While animals, being mobile, developed other creative survival strategies through a long evolutionary process. Being exposed to various environments, they not only developed multifunctional surfaces, but also movements and a broad portfolio of sensing methods that increased their survival efficiency. Comprehensive analysis and evaluation of the adaptation strategies of plants (both static strategies and dynamic mechanisms) and animals to their environment in different climate zones are indispensable for transferring concepts from biology to architecture. Consequently, specific adaptation solutions might be implemented in new materials that will be used for building envelopes erected in the same climatic zones. Integrating length scales and mixing biological, chemical, and physical concepts for tailoring the properties of materials during preparation should allow for better designing of future smart materials. The process should lead to the development of active biomaterials that perform as interfaces between outdoor conditions and internal comfort. In that they should be able to regulate humidity, temperature, CO2, and light as well as capture and filter pollutants; in addition, they should have self-assembling, self-cleaning, grafting, and self-healing properties. This contribution provides an analysis of several examples that represent the adaptation of organisms to various environments and are presented with the aim to inspire future researchers in the development of new building materials.

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“…The Bacillariophyta Division is a microalga with mucus, so it has an excellent ability to attach to fastflowing river substrates. The Bacillariophyta Division has an adherent device to attach to the substrate in a gelatine stalk with high adhesion (Guan et al 2021). Bacillariophyta is a group of autotrophic epiphytic microalgae, the most abundant of which are found in freshwater, brackish water, and marine water worldwide and moist terrestrial habitats (Al Diana et al 2020).…”

Section: Epiphytic Microalgae Community Structurementioning

confidence: 99%

Epiphytic microalgae community as aquatic bioindicator in Brantas River, East Java, Indonesia

et al. 2021

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Abstract. Arsad S, Putra KT, Latifah N, Kadim MK, Musa M. 2021. Epiphytic microalgae community as aquatic bioindicator in Brantas River, East Java, Indonesia. Biodiversitas 22: 2961-2971. One way to monitor water quality is by using biological indicators, namely epiphytic microalgae (periphyton). This study aims to analyze the epiphytic periphyton community structure and analyze the river health status using a saprobic index. The research location was in the Brantas River, Blitar District, East Java, Indonesia. The method used was a survey with sampling at three sites based on the purposive sampling technique. Periphyton samples were taken using the quadrant transect (5x5 cm²) method and then identified using the Lackey Drop Micro transect Counting Method. The results show that the periphyton community structure is in balance, and there are six divisions of 59 different genera. The six divisions found are Bacillariophyta, Cyanophyta, Chlorophyta, Charophyta, Ochrophyta, and Rhodophyta. The most identified genus is from the Bacillariophyta Division with 28 genera, while the least identified genus is the Rhodophyta division with 1 genus. The abundance ??ranges from 242,800-1,229,174 cells. cm-2, the relative abundance index ??of periphyton ranges from 3-60% (site 1), 9-57% (site 2), 1-62% (site 3), the diversity index ranges from 1.212-2.617 (moderate), the uniformity index ranges from 0.307-2.151 (high), the dominance index ranges from 0.105-0.549 (moderate), and the saprobic index ranges from-0.18 to 0.55. Moreover, supporting water quality parameters are still optimal, except for ammonia and total organic matter parameters that exceed the quality standard. Based on the saprobic value obtained, the water quality of the Brantas River in Tawangrejo Village can be classified into the category of ?/?-mesosaprobic to ?-mesosaprobic saprobic levels with mild to moderate levels of pollution.

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Secretion mechanism and adhesive mechanism of diatoms: Direct evidence from the quantitative analysis

Cited by 9 publications

References 42 publications

Pollution level of Banjaran River, Banyumas District, Indonesia: A study based on the Saprobic Index of periphytic microalgae

Pollution level of Banjaran River, Banyumas District, Indonesia: A study based on the Saprobic Index of periphytic microalgae

Bioinspired building materials—lessons from nature

Epiphytic microalgae community as aquatic bioindicator in Brantas River, East Java, Indonesia

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