Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i3.30
A. A.-A. Ennan, G. M. Shikhaleyeva, P. M. Tsarenko, H.M. Kiryushkina, V. P. Gerasimyuk
The dynamics of seasonal development of the algal flora from the Kuyalnyk Estuary between 2001-2018 is considered here. A significant spatial heterogeneity was established for the distribution of the aquatic microalgae aquatic habitat for the different growth seasons. The lowest and highest indicators of the number and biomass of microalgae were observed in the shallow waters of the northern part of the estuary.
{"title":"Seasonal Dynamics of Algoflora Development of the Hyperhaline Kuyalnyk Estuary (North-Western Black Sea Coast, Ukraine)","authors":"A. A.-A. Ennan, G. M. Shikhaleyeva, P. M. Tsarenko, H.M. Kiryushkina, V. P. Gerasimyuk","doi":"10.1615/interjalgae.v25.i3.30","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i3.30","url":null,"abstract":"The dynamics of seasonal development of the algal flora from the Kuyalnyk Estuary between 2001-2018 is considered here. A significant spatial heterogeneity was established for the distribution of the aquatic microalgae aquatic habitat for the different growth seasons. The lowest and highest indicators of the number and biomass of microalgae were observed in the shallow waters of the northern part of the estuary.","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135733698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i2.30
Y. Shelyuk
The peculiarities of the phytoplankton structures of the main Polissia rivers - Pripyat and Teteriv - have been established. The main trends in the transformation of the autotrophic network of Polissia rivers have been uncovered. In total, between 2003-2020, 621 species of algae were identified, represented by 660 intraspecific taxa belonging to 217 genera, 81 families, 35 orders, 14 classes, and 8 divisions. Fifty-one specific and intraspecific taxa were found to be new to the Ukrainian Polissia. The appearance of species new to the region is largely due to changes in the hydrological and hydrochemical regimes of watercourses associated with regulation, land reclamation, anthropogenic pollution, and climate changes. The thoroughness and purposefulness of this study by covering a many territories and watercourses including various physical and geographical regions in the Ukrainian Polissia. The main abiotic parameters that cause changes in the structural indicators of phytoplankton in the studied watercourses have been determined. It was established that the relationship between algofloristic indicators and environmental factors is largely determined by the content of biogens. A strong inverse connection was found between the number of algae species and water color, as well as a weak correlation with temperature. A bioindicative analysis of the species composition of phytoplankton of river ecosystems was carried out, and the quality of their waters was assessed. In the watercourses of the region, the predominance of saprobity indicators, which correspond to the III class of water quality, was determined.
{"title":"Phytoplankton of the Ukrainian Polissia River Ecosystems","authors":"Y. Shelyuk","doi":"10.1615/interjalgae.v25.i2.30","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i2.30","url":null,"abstract":"The peculiarities of the phytoplankton structures of the main Polissia rivers - Pripyat and Teteriv - have been established. The main trends in the transformation of the autotrophic network of Polissia rivers have been uncovered. In total, between 2003-2020, 621 species of algae were identified, represented by 660 intraspecific taxa belonging to 217 genera, 81 families, 35 orders, 14 classes, and 8 divisions. Fifty-one specific and intraspecific taxa were found to be new to the Ukrainian Polissia. The appearance of species new to the region is largely due to changes in the hydrological and hydrochemical regimes of watercourses associated with regulation, land reclamation, anthropogenic pollution, and climate changes. The thoroughness and purposefulness of this study by covering a many territories and watercourses including various physical and geographical regions in the Ukrainian Polissia. The main abiotic parameters that cause changes in the structural indicators of phytoplankton in the studied watercourses have been determined. It was established that the relationship between algofloristic indicators and environmental factors is largely determined by the content of biogens. A strong inverse connection was found between the number of algae species and water color, as well as a weak correlation with temperature. A bioindicative analysis of the species composition of phytoplankton of river ecosystems was carried out, and the quality of their waters was assessed. In the watercourses of the region, the predominance of saprobity indicators, which correspond to the III class of water quality, was determined.","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i2.60
M. Davoodi, S. Amirali, B. Nowruzi, L. Golestan
The prevailing conditions for the production, storage, and sale of traditional cheese seem to increase the probability of microbial contamination. Escherichia coli and Staphylococcus aureus are among the bacteria that may cause major complications such as diarrhea, hemolytic uremic syndrome (HUS), food poisoning, and gastrointestinal infections in cheese consumers. The use of food coloring to enhance the microbial load of food products, as an innovative and cost-effective biological control, is one of the most efficient methods in managing the production, storage, and quality of food. Extracted naturally from Spirulina sp., phycocyanin is widely used in various pharmaceutical, food, cosmetic and health industries. This is the first attempt to investigate the possible effect of adding phycocyanin pigment into traditional cheese, in order to improve-the nutritional value, quality and shelf life of traditional cheese. This study collected five different types of traditional cheese from different localities in Iran. The researcher immersed the samples in concentrations of 1%, 1.5% and 2% phycocyanin pigment. After identifying the existing bacteria, the possible effect of the pigment on the total number of bacteria, as well as the number of E. coli and S. aureus, were evaluated within 15 days. The study used Ferric ion reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and nitric oxide trapping with the sensory testing in order to determine the amount of protein, fat, ash, moisture, and antioxidant properties. Statistical analyses showed that, compared to the control group, the concentration of phycocyanin rose when the number of bacteria decreased and antioxidant activity increased in all types of cheese. The results revealed a significant increase in the amount of protein (93%), fat (80%), moisture (100%), and ash (67%). In addition, the highest consumer satisfaction was observed on day 1 and days 7 and 15; cheese with a concentrations of 1.5% and 2% pigments were preferred.
{"title":"The Effect of Phycocyanin on the Microbial, Antioxidant, and Nutritional Properties of Iranian Cheese","authors":"M. Davoodi, S. Amirali, B. Nowruzi, L. Golestan","doi":"10.1615/interjalgae.v25.i2.60","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i2.60","url":null,"abstract":"The prevailing conditions for the production, storage, and sale of traditional cheese seem to increase the probability of microbial contamination. Escherichia coli and Staphylococcus aureus are among the bacteria that may cause major complications such as diarrhea, hemolytic uremic syndrome (HUS), food poisoning, and gastrointestinal infections in cheese consumers. The use of food coloring to enhance the microbial load of food products, as an innovative and cost-effective biological control, is one of the most efficient methods in managing the production, storage, and quality of food. Extracted naturally from Spirulina sp., phycocyanin is widely used in various pharmaceutical, food, cosmetic and health industries. This is the first attempt to investigate the possible effect of adding phycocyanin pigment into traditional cheese, in order to improve-the nutritional value, quality and shelf life of traditional cheese. This study collected five different types of traditional cheese from different localities in Iran. The researcher immersed the samples in concentrations of 1%, 1.5% and 2% phycocyanin pigment. After identifying the existing bacteria, the possible effect of the pigment on the total number of bacteria, as well as the number of E. coli and S. aureus, were evaluated within 15 days. The study used Ferric ion reducing antioxidant power (FRAP), 2,2-diphenyl-1-picrylhydrazyl (DPPH), and nitric oxide trapping with the sensory testing in order to determine the amount of protein, fat, ash, moisture, and antioxidant properties. Statistical analyses showed that, compared to the control group, the concentration of phycocyanin rose when the number of bacteria decreased and antioxidant activity increased in all types of cheese. The results revealed a significant increase in the amount of protein (93%), fat (80%), moisture (100%), and ash (67%). In addition, the highest consumer satisfaction was observed on day 1 and days 7 and 15; cheese with a concentrations of 1.5% and 2% pigments were preferred.","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i3.10
S. Genkal, V. Gabyshev
The study of algological material, from tundra lakes adjacent to the territories in the Ust-Lena Reserve (Yakutia, Russia), using a scanning electron microscopy revealed a new diatom species to science, Humidophila davydovae sp. nov. The new species has morphological similarities with other species of the genus, H. schmassmannii, but differs in shape of the valve and the central field, leaf length, width, and the number of striae.
{"title":"Humidophila davydovae (Bacillariophyta), a New Diatom Species to Science","authors":"S. Genkal, V. Gabyshev","doi":"10.1615/interjalgae.v25.i3.10","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i3.10","url":null,"abstract":"The study of algological material, from tundra lakes adjacent to the territories in the Ust-Lena Reserve (Yakutia, Russia), using a scanning electron microscopy revealed a new diatom species to science, Humidophila davydovae sp. nov. The new species has morphological similarities with other species of the genus, H. schmassmannii, but differs in shape of the valve and the central field, leaf length, width, and the number of striae.","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i3.40
A. Avramenko, V. Pushkar
The analysis of diatomaceous deposits in the South of the Russian Far East allowed us to determine the taxonomic composition of the diatom flora and assess its qualitative (ecological) and quantitative traits. The obtained data enabled us to identify biofacies associated with the conditions of diatomite formation and reveal the reasons behind it. Possible reasons of high diatom productivity in the Neogene could be: development of a dense system of rivers and lakes; a long growing season under the conditions of a tropical monsoon climate with mild winters; active volcanic activity, the eruption products of which were the source of materials needed for the formation of valves and supporting the life activity of diatoms.
{"title":"Conditions of Diatomites Formation in the Primorye (South of the Russian Far East)","authors":"A. Avramenko, V. Pushkar","doi":"10.1615/interjalgae.v25.i3.40","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i3.40","url":null,"abstract":"The analysis of diatomaceous deposits in the South of the Russian Far East allowed us to determine the taxonomic composition of the diatom flora and assess its qualitative (ecological) and quantitative traits. The obtained data enabled us to identify biofacies associated with the conditions of diatomite formation and reveal the reasons behind it. Possible reasons of high diatom productivity in the Neogene could be: development of a dense system of rivers and lakes; a long growing season under the conditions of a tropical monsoon climate with mild winters; active volcanic activity, the eruption products of which were the source of materials needed for the formation of valves and supporting the life activity of diatoms.","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i2.50
N. Zaimenko, P. Tsarenko, N. Didyk, B. Ivanytska, N. Ellanska, N. Pavliuchenko, I. Kharytonova
The combined effect of the culture medium of green microalgae (Chlorella vulgaris) and organosilicon fertilizer (analcite + peat (pH 5.8) in a ratio of 1 : 3) on characteristics of growth, development, photosynthetic productivity, yield and quality of bell pepper (Capsicum annuum L., cv. "Bilozyorka"), as well as microbiocenosis, allelopathic and agronomic characteristics of the soil were studied in pot experiments. The culture medium of microalgae was added at a rate of 10 mL per pot (0.7 L) to sifted and sterile gray podzolid soil. Plants were grown in a phytochamber under controlled conditions of light, temperature and soil moisture. The vitality of pepper plants was assessed by morphometric growth characteristics (shoot height, stem diameter, surface area of leaves, root length, dry weight of shoots and roots, number and weight of fruits), the content of photosynthetic pigments in leaves, and protective antioxidants (carotenoids, flavonoids and anthocyanins) in fruits. At the end of the experiment, the content of phenolic compounds, electrical conductivity, redox potential, pH, content of NH4+, NO3- and HCO3- ions in the soil solution were determined. Eco-trophic groups of soil microorganisms were also determined. A synergistic enhancement of the positive effect of microalgae and organosilicon fertilizer on the growth, development, productivity and fruit quality in bell pepper was established. The combined application of the microalgae with organosilicon fertilizer more effectively improved the agronomic and allelopathic characteristics of the soil, stimulated the development of agronomically useful eco-trophic groups of microorganisms, incresed the intensity of the mineralization and transformation of organic matter compared to the control and treatments in which microalgae or fertilizer were applied separately.
绿色微藻(Chlorella vulgaris)培养基与有机硅肥(方解石+泥炭(pH 5.8)比例为1:3)联合施用对甜椒(Capsicum annuum L.， cv.)生长发育、光合生产力、产量和品质的影响。在盆栽试验中，研究了土壤的微生物群落、化感作用和农艺特性。将微藻培养基以每罐10 mL (0.7 L)的速率加入筛选过的无菌灰灰土中。植物在受控的光、温度和土壤湿度条件下在植物室中生长。通过形态测量生长特征(茎高、茎粗、叶表面积、根长、茎根干重、果实数量和重量)、叶片光合色素含量和果实中保护性抗氧化剂(类胡萝卜素、类黄酮和花青素)来评价辣椒植株的活力。实验结束时，测定土壤溶液中酚类化合物含量、电导率、氧化还原电位、pH、NH4+、NO3-、HCO3-离子含量。测定了土壤微生物的生态营养类群。研究了微藻与有机硅肥对甜椒生长发育、产量和果实品质的协同增强效应。与单独施用微藻或有机肥的对照和处理相比，微藻与有机硅肥的配施更有效地改善了土壤的农艺和化感特性，促进了农艺上有用的生态营养微生物群的发育，提高了有机质的矿化和转化强度。
{"title":"Combined Effect of Chlorella vulgaris Beijer. (Chlorophyta) and Silicon-Containing Organic Fertilizer on Bell Pepper Productivity, Microbiocenosis, Allelopathic and Agronomic Soil Characteristics","authors":"N. Zaimenko, P. Tsarenko, N. Didyk, B. Ivanytska, N. Ellanska, N. Pavliuchenko, I. Kharytonova","doi":"10.1615/interjalgae.v25.i2.50","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i2.50","url":null,"abstract":"The combined effect of the culture medium of green microalgae (Chlorella vulgaris) and organosilicon fertilizer (analcite + peat (pH 5.8) in a ratio of 1 : 3) on characteristics of growth, development, photosynthetic productivity, yield and quality of bell pepper (Capsicum annuum L., cv. \"Bilozyorka\"), as well as microbiocenosis, allelopathic and agronomic characteristics of the soil were studied in pot experiments. The culture medium of microalgae was added at a rate of 10 mL per pot (0.7 L) to sifted and sterile gray podzolid soil. Plants were grown in a phytochamber under controlled conditions of light, temperature and soil moisture. The vitality of pepper plants was assessed by morphometric growth characteristics (shoot height, stem diameter, surface area of leaves, root length, dry weight of shoots and roots, number and weight of fruits), the content of photosynthetic pigments in leaves, and protective antioxidants (carotenoids, flavonoids and anthocyanins) in fruits. At the end of the experiment, the content of phenolic compounds, electrical conductivity, redox potential, pH, content of NH4+, NO3- and HCO3- ions in the soil solution were determined. Eco-trophic groups of soil microorganisms were also determined. A synergistic enhancement of the positive effect of microalgae and organosilicon fertilizer on the growth, development, productivity and fruit quality in bell pepper was established. The combined application of the microalgae with organosilicon fertilizer more effectively improved the agronomic and allelopathic characteristics of the soil, stimulated the development of agronomically useful eco-trophic groups of microorganisms, incresed the intensity of the mineralization and transformation of organic matter compared to the control and treatments in which microalgae or fertilizer were applied separately.","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i4.60
Rakesh Kumar
Control of undesirable algal species is the primary requirement for the long-term maintenance of health of an aquatic ecosystem. Their excessive growth may cause ecosystem imbalance by depleting the water quality and affecting the life of aquatic fauna. The present paper describes the physical, chemical and biological methods of controlling undesirable algal species.
{"title":"Controlling Undesirable Algal Species From Aquatic Ecosystems","authors":"Rakesh Kumar","doi":"10.1615/interjalgae.v25.i4.60","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i4.60","url":null,"abstract":"Control of undesirable algal species is the primary requirement for the long-term maintenance of health of an aquatic ecosystem. Their excessive growth may cause ecosystem imbalance by depleting the water quality and affecting the life of aquatic fauna. The present paper describes the physical, chemical and biological methods of controlling undesirable algal species.","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i1.60
Fatemeh Yadollahi, S. Shokravi, M. Mahmoudjanlo, M. Ebadi
The possibility of change in the phycobilisome status, photosynthetic pigments, ratios and light parameters of soil cyanobacteria Fischerella sp. FS 18 has been investigated by two pre-treatment factors, with neutral and extreme alkaline pH (7 and 9) over a short period. After purification, cyanobacteria were subjected to extreme alkaline treatment for under one hour at 20 min intervals (20, 40 and 60 min). A sample was selected as a control without pre-treatment. Colorimetric assays (phycocyanin, alophycocyanin, phycoerythrin, chlorophyll) and a comparison of the combined effect of time and alkalinity on photosystemic ratios were performed through photophysiology. The photosynthesis - light curves were compared with direct measurements. The results showed that the combination of time and alkalinity after 20 min of inoculation significantly increased the performance of the photosystem and stability of the phycobilin system. The 40 min time interval, under both neutral and alkaline conditions, significantly increased the yield of photosystem II, increased the production of the first photosystem compared to the second system, increased the linear fraction of the photosynthesis-light curve, and reduced the energy needed to achieve maximum photosynthesis. Maximal photosynthesis was entirely different at 40 min pretreatment conditions versus without pretreatment. Concerning the 20 and 60 min time intervals, the results show no specific regularity or trend. Production of light collecting antennas is influenced by both time and alkalinity. Two important conclusions from this study include: applying pre-treatment times, even at 60 min or less, cause a significant change in the structure and performance of the photosynthetic apparatus; as well as,-using simple alkaline pretreatments in a very short time period, saving energy whilst, photosynthesis and cyanobacterial materialization can be significantly increased.
{"title":"The Effect of Short Term Alkalinity on Photosynthesis Apparatus in Soil Cyanobacterium Fischerella sp. FS 18 - Ecophysiological Approach","authors":"Fatemeh Yadollahi, S. Shokravi, M. Mahmoudjanlo, M. Ebadi","doi":"10.1615/interjalgae.v25.i1.60","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i1.60","url":null,"abstract":"The possibility of change in the phycobilisome status, photosynthetic pigments, ratios and light parameters of soil cyanobacteria Fischerella sp. FS 18 has been investigated by two pre-treatment factors, with neutral and extreme alkaline pH (7 and 9) over a short period. After purification, cyanobacteria were subjected to extreme alkaline treatment for under one hour at 20 min intervals (20, 40 and 60 min). A sample was selected as a control without pre-treatment. Colorimetric assays (phycocyanin, alophycocyanin, phycoerythrin, chlorophyll) and a comparison of the combined effect of time and alkalinity on photosystemic ratios were performed through photophysiology. The photosynthesis - light curves were compared with direct measurements. The results showed that the combination of time and alkalinity after 20 min of inoculation significantly increased the performance of the photosystem and stability of the phycobilin system. The 40 min time interval, under both neutral and alkaline conditions, significantly increased the yield of photosystem II, increased the production of the first photosystem compared to the second system, increased the linear fraction of the photosynthesis-light curve, and reduced the energy needed to achieve maximum photosynthesis. Maximal photosynthesis was entirely different at 40 min pretreatment conditions versus without pretreatment. Concerning the 20 and 60 min time intervals, the results show no specific regularity or trend. Production of light collecting antennas is influenced by both time and alkalinity. Two important conclusions from this study include: applying pre-treatment times, even at 60 min or less, cause a significant change in the structure and performance of the photosynthetic apparatus; as well as,-using simple alkaline pretreatments in a very short time period, saving energy whilst, photosynthesis and cyanobacterial materialization can be significantly increased.","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i3.50
J. Rathod, V. Kothari, S. Bhagat, Satyam Pawar, Mayuri Gaikwad, Preety Jadhav, Pranali Randive, Dhanashree Nevase
Microalgae are gaining importance in the agriculture sector because of their biostimulant activities and thereby increasing crop and vegetable yields worldwide. In the current study, intact microalgal cells were used as bio-stimulants for Cucumis sativus root treatment in a soilless agricultural system inside a Dutch polyhouse along with routine nutrients. The control sets with routine nutrients and with only D/W were put to study the exact effect of microalga on the growth of the cucumber plant. The average length of the biostimulant treated cucumber climber was 12.25% more than nutrient set, which itself showed 48.28% more growth than the control set. Similarly, biostimulant treated set showed an increase in the stem diameter (10%), the number of leaves (37.66%), and the number of floral buds (39.47%) as compared to nutrient set, which themselves exhibited superior parameters than the control set. The numbers of flowers were 100% and fruits were 77.78% more in the biostimulant treated set than in the nutrient set. When the pigment profile was studied, the biostimulant treated set showed increased chlorophyll a (23.77%), chlorophyll b (68.78%) and decreased carotenoids (65.75%) content as compared to the nutrient set. Microscopic observation of roots of microalga biostimulant treated set revealed microalga-root association. To the best of our knowledge, it is the first report of the microalga-root association in C. sativus along with a positive impact on the overall growth and yield of cucumber plants under soilless conditions. The findings have the potential to lay the groundwork for a novel microbe-root interaction between microalgae and plant roots (Phyco-rrhiza).
{"title":"Phyco-rrhiza: the First Report of Beneficial Microalga-Root Association of Cucumis sativus Grown on Soilless Media Under Dutch Polyhouse Conditions","authors":"J. Rathod, V. Kothari, S. Bhagat, Satyam Pawar, Mayuri Gaikwad, Preety Jadhav, Pranali Randive, Dhanashree Nevase","doi":"10.1615/interjalgae.v25.i3.50","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i3.50","url":null,"abstract":"Microalgae are gaining importance in the agriculture sector because of their biostimulant activities and thereby increasing crop and vegetable yields worldwide. In the current study, intact microalgal cells were used as bio-stimulants for Cucumis sativus root treatment in a soilless agricultural system inside a Dutch polyhouse along with routine nutrients. The control sets with routine nutrients and with only D/W were put to study the exact effect of microalga on the growth of the cucumber plant. The average length of the biostimulant treated cucumber climber was 12.25% more than nutrient set, which itself showed 48.28% more growth than the control set. Similarly, biostimulant treated set showed an increase in the stem diameter (10%), the number of leaves (37.66%), and the number of floral buds (39.47%) as compared to nutrient set, which themselves exhibited superior parameters than the control set. The numbers of flowers were 100% and fruits were 77.78% more in the biostimulant treated set than in the nutrient set. When the pigment profile was studied, the biostimulant treated set showed increased chlorophyll a (23.77%), chlorophyll b (68.78%) and decreased carotenoids (65.75%) content as compared to the nutrient set. Microscopic observation of roots of microalga biostimulant treated set revealed microalga-root association. To the best of our knowledge, it is the first report of the microalga-root association in C. sativus along with a positive impact on the overall growth and yield of cucumber plants under soilless conditions. The findings have the potential to lay the groundwork for a novel microbe-root interaction between microalgae and plant roots (Phyco-rrhiza).","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67361672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-01-01DOI: 10.1615/interjalgae.v25.i4.40
I. L. Sukhodolska, I. V. Basaraba
This study considers the algal flora of Lake Zasvitske (Rivne region, Ukraine). The author identifies 61 species of algae presented with 62 intraspecific taxa subdivided into nomenclatural types that belong to 8 divisions, 13 classes, 24 orders, 34 families and 51 genera. The paper demonstrates that Bacillariophyta, Chlorophyta, Cyanobacteria and Streptophyta play a significant role in lake phytoplankton development. According to the population, the Shannon diversity index varies from 2.13 bit/spec. (October) to 3.89 bit/spec. (July), and according to biomass this index varies from 1.63 bit/spec. (June) to 4.10 bit/spec. (July). In the lake phytoplankton, polydominant structure prevails. In Lake Zasvitske the phytoplankton core is developed with planktonic-benthic and planktonic species, slow-flowing species according to water saturation with oxygen and rheophilicity, indifferent species in relation to the density, pH level of the environment and water temperature, mesoeutrophic ones and species with wide amplitude according to the trophic level. Eurysaprobes (according to the Watanabe system) and beta-mesosaprobionts (according to the Pantle-Buk system as modified by Sladecek) are predominant among indicator species of organic water pollution.
{"title":"Seasonal Dynamics of Algal Flora of Lake Zasvitske (Rivne Region, Ukraine)","authors":"I. L. Sukhodolska, I. V. Basaraba","doi":"10.1615/interjalgae.v25.i4.40","DOIUrl":"https://doi.org/10.1615/interjalgae.v25.i4.40","url":null,"abstract":"This study considers the algal flora of Lake Zasvitske (Rivne region, Ukraine). The author identifies 61 species of algae presented with 62 intraspecific taxa subdivided into nomenclatural types that belong to 8 divisions, 13 classes, 24 orders, 34 families and 51 genera. The paper demonstrates that <i>Bacillariophyta, Chlorophyta, Cyanobacteria</i> and <i>Streptophyta </i>play a significant role in lake phytoplankton development. According to the population, the Shannon diversity index varies from 2.13 bit/spec. (October) to 3.89 bit/spec. (July), and according to biomass this index varies from 1.63 bit/spec. (June) to 4.10 bit/spec. (July). In the lake phytoplankton, polydominant structure prevails. In Lake Zasvitske the phytoplankton core is developed with planktonic-benthic and planktonic species, slow-flowing species according to water saturation with oxygen and rheophilicity, indifferent species in relation to the density, pH level of the environment and water temperature, mesoeutrophic ones and species with wide amplitude according to the trophic level. Eurysaprobes (according to the Watanabe system) and beta-mesosaprobionts (according to the Pantle-Buk system as modified by Sladecek) are predominant among indicator species of organic water pollution.","PeriodicalId":39315,"journal":{"name":"International Journal on Algae","volume":"241 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134888339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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