New Records of Corticolous Microalgae and Cyanobacteria for Philippine Algal Flora From Mt. Makiling Forest Reserve

Arguelles, Eldrin De Los Reyes

doi:10.15414/jmbfs.2019.9.1.1-8

Cited by 4 publications

(1 citation statement)

References 13 publications

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“… Algae inhabiting tree trunks have been the subject of a few studies, most of which focused on green algae and cyanobacteria ( Foerester 1971 ; Wylie and Schlichting 1973 ; Mrozińska 1990 ; Thompson and Wujek 1997 ; Salleh and Milow 1999 ; Czerwik and Mrozińska 2000 ; Neustupa 2003 , 2005 ; Soni and Shukla 2006 ; Neustupa and Škaloud 2008 , 2010 ; Lemes-Da-Silva et al 2010 ; Bhakta et al 2014 ; Kharkongor and Ramanujam 2014 ; Štifterová and Neustupa 2015 ; Narasimha Rao 2017 ; Ambika and Krishnamurthy 2018 ). In research on bark-associated algae, diatoms have been reported rarely to date and are usually only listed as single taxa in species’ lists ( Neustupa and Škaloud 2010 ; Neustupa and Štifterová 2013 ; Kharkongor and Ramanujam 2014 ; Štifterová and Neustupa 2015 ; Nirmala et al 2016 ; Eldrin 2019 ). Lakatos and co-authors ( Lakatos et al 2004 ) studied diatoms inhabiting the thallus of the arboreal lichen Coenogonium linkii Ehrenb., and during this research they noted 18 taxa.…”

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confidence: 99%

Study of terrestrial diatoms in corticolous assemblages from deciduous trees in Central Europe with descriptions of two new Luticola D.G.Mann taxa

Rybak¹,

Czarnota²,

Noga³

2023

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Although many studies have examined the algae associated with various habitats in tree trunks, the diatoms in these environments are still poorly studied. Studies of corticolous algae mainly focus on green algae and cyanobacteria, which are usually immediately visible, while diatoms are mostly overlooked or not reported. During the research, 143 species of diatoms were identified, including two new representatives of the genus Luticola: L. bryophilasp. nov. with relatively large central area and short distal raphe endings and L. confusasp. nov. characterized by the presence of small depressions on central raphe endings. Both are described herein based on light and scanning electron microscopy observations and compared to similar taxa based on literature data. Basic morphological data for almost all the diatom taxa are noted, and their habitat requirements, and photographic documentation are also presented. The present research showed that the occurrence of diatom assemblages on tree trunks is influenced by various factors like host tree species, the area where the host tree grows, and the availability of suitable microhabitats within the trunk. However, the species composition of this assemblages depends mainly on the tree species.

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Section: Introductionmentioning

confidence: 99%

Study of terrestrial diatoms in corticolous assemblages from deciduous trees in Central Europe with descriptions of two new Luticola D.G.Mann taxa

Rybak¹,

Czarnota²,

Noga³

2023

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Optimization of Process Conditions for the Production of Holocellulase by a <i>Bacillus</i> Species Isolated from Nahoon Beach Sediments

Fatokun¹,

Nwodo²,

Olaniran³

et al. 2017

American Journal of Biochemistry and Biotechnology

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Production of holocellulase by a newly isolated marine Bacillus species via submerged fermentation technique at varying cultivation conditions was investigated. Enzyme production was optimized by altering one variable per time. Moreover effect of lignocellulosic saccharides in inducing cellulase and xylanase production was also investigated. The 16S ribosomal Deoxyribonucleic Acid (16S rDNA) gene sequence analysis exhibited 98% sequence similarity of the isolate with other Bacillus species in the gene bank and was deposited with the accession number KX524510. Optimal xylanase and cellulase production was attained at pH 7, temperature 30°C and agitation speed of 50 and 150 rpm. Furthermore, maximum xylanase and cellulase production were both achieved at 60 h corresponding to the late stationary growth stage, with activity of 16.6 and 0.061 U mL −1 respectively. Xylanase production was maximally induced by beechwood xylan, xylose and arabinose with activities of 13.59, 8.78 and 1.90 (U mL −1 ) respectively; while cellulase production was induced by carboxymethyl cellulose only and no cellulase activity was detected in the culture supernatant of the other carbon sources tested. Optimization increased cellulase and xylanase yields being 0.006-0.061 and 0.23-16.6 (U mL −1 ) from unoptimized to optimized respectively. The results of the study suggest the bacterial strain to be a proficient producer of cellulase and xylanase with potentials in biotechnological application.

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Evaluating the Diversity of Culturable Thermotolerant Bacteria from Four Hot Springs of India

Yadav¹

2014

J Biodivers Biopros Dev

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The culturable bacterial diversity of four hot springs of India was analysed, employing different media and screened for temperature tolerance (40°C -70°C). Sixty morphotypes from Bakreshwar, 48 from Balrampur, 46 from Chumathang and 52 from Vashist were obtained. A set of 112 isolates, tolerant to 45°C and above, were analysed employing Amplified ribosomal DNA restriction analysis (ARDRA). Sequencing of 16S rRNA gene of the representative isolates revealed that 86%, 93%, 44% and 44% of the isolates respectively from Bakreshwar, Balrampur, Chumathang and Vashist, belonged to Firmicutes. Members of Actinobacteria were present in all the four hot springs, while Proteobacteria were present only in Chumathang and Vashist and Bacteroidetes found only in Bakreshwar. This is the first report of Aurantimonas and Brevundimonas in hot springs. Biolog analyses of three isolates, growing at or above 60°C revealed unique abilities, in terms of utilization of substrates and resistance patterns.

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New Records of Corticolous Microalgae and Cyanobacteria for Philippine Algal Flora From Mt. Makiling Forest Reserve

Cited by 4 publications

References 13 publications

Study of terrestrial diatoms in corticolous assemblages from deciduous trees in Central Europe with descriptions of two new Luticola D.G.Mann taxa

Study of terrestrial diatoms in corticolous assemblages from deciduous trees in Central Europe with descriptions of two new Luticola D.G.Mann taxa

Optimization of Process Conditions for the Production of Holocellulase by a <i>Bacillus</i> Species Isolated from Nahoon Beach Sediments

Evaluating the Diversity of Culturable Thermotolerant Bacteria from Four Hot Springs of India

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New Records of Corticolous Microalgae and Cyanobacteria for Philippine Algal Flora From Mt. Makiling Forest Reserve

Cited by 4 publications

References 13 publications

﻿Study of terrestrial diatoms in corticolous assemblages from deciduous trees in Central Europe with descriptions of two new Luticola D.G.Mann taxa

﻿Study of terrestrial diatoms in corticolous assemblages from deciduous trees in Central Europe with descriptions of two new Luticola D.G.Mann taxa

Optimization of Process Conditions for the Production of Holocellulase by a <i>Bacillus</i> Species Isolated from Nahoon Beach Sediments

Evaluating the Diversity of Culturable Thermotolerant Bacteria from Four Hot Springs of India

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Study of terrestrial diatoms in corticolous assemblages from deciduous trees in Central Europe with descriptions of two new Luticola D.G.Mann taxa

Study of terrestrial diatoms in corticolous assemblages from deciduous trees in Central Europe with descriptions of two new Luticola D.G.Mann taxa