New record of a bloom forming, genotoxic strain  Nodularia  strain (KT447209) from Andaman and Nicobar Islands, India

Narayana, Sumantha; Mohanraju, R.; Singh, Prashant; Thamke, Viresh; Tapase, Savita R.; Shouche, Yogesh S.; Kodam, Kisan M.

doi:10.1016/j.chemosphere.2017.01.139

Cited by 4 publications

(2 citation statements)

References 30 publications

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“…In addition, we detected some cyanobacteria that are usually found in the aquatic environment, indirectly indicating the contribution from the aquatic source. For instance, Nodularia sp., one of the principal genera causing the cyanobacterial blooms, were most commonly observed in the marine ecosystem, e.g., along the Andaman and Nicobar Islands in India [ 49 ] and the Baltic Sea [ 50 ]. As mentioned above, there are many inland ponds, rivers, and lakes, which are usually influenced by cyanobacteria growth and even algal bloom, located in Shanghai.…”

Section: Discussionmentioning

confidence: 99%

Abundant Cyanobacteria in Autumn Adhering to the Heating, Ventilation, and Air-Conditioning (HVAC) in Shanghai

et al. 2023

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Cyanobacteria are ever-present, mainly flourishing in aquatic environments and surviving virtually in other habitats. The microbiota of indoor dust on the pre-filter of heating, ventilation, and air-conditioning (HVAC) systems, which reflect indoor microbial contamination and affect human health, has attracted attention. Contemporary studies on cyanobacteria deposited on the pre-filter of HVAC remain scant. By the culture-independent approach of qPCR and high throughput sequencing technologies, our results documented that the cyanobacterial concentrations were highest in autumn, occurred recurrently, and were about 2.60 and 10.57-fold higher than those in winter and summer. We proposed that aquatic and terrestrial cyanobacteria contributed to the pre-filter of HVAC by airborne transportation produced by wave breaks, bubble bursts, and soil surface by wind force, owing to the evidence that cyanobacteria were commonly detected in airborne particulate matters. The cyanobacteria community structure was characterized in Shanghai, where Chroococcidiopsaceae, norank_cyanobacteriales, Nostocaceae, Paraspirulinaceae, and others dominated the dust on the pre-filter of HVAC. Some detected genera, including Nodularia sp., Pseudanabaena sp., and Leptolyngbya sp., potentially produced cyanobacterial toxins, which need further studying to determine their potential threat to human health. The present work shed new insight into cyanobacteria distribution in the specific environment besides aquatic habitats.

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Section: Discussionmentioning

confidence: 99%

Abundant Cyanobacteria in Autumn Adhering to the Heating, Ventilation, and Air-Conditioning (HVAC) in Shanghai

et al. 2023

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“…In April 1998, a bloom of the genus Cladophora was reported in the Pokhribal area of Nigeen basin (Western basin of Dal Lake) that stench like untreated sewage and choked the waterways near the Amir Khan Canal exit point (Kundangar, 1999). Many reports of CHABs in various Indian water bodies and reservoirs in 2019 (hottest-year recorded) were reported (Narayana et al, 2020;Inaotombi and Sarma, 2021). Apart from the coastal waters on India's East and West coasts, Ukai Dam in Gujarat, Chilika Lagoon in Odisha, Gandhisagar and Bargi Dams in Madhya Pradesh, Stanley Reservoir in Tamil Nadu, and Dal Lake in Kashmir, India are just a few examples of affected Indian inland water bodies (Mishra et al, 2020;Ray et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Microcystis sp. AE03 strain in Dal Lake harbors cylindrospermopsin and microcystin synthetase gene cluster

Bashir

Rajput

et al. 2022

Front. Sustain. Food Syst.

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Cyanobacterial harmful algal blooms (CHABs) are increasing at an alarming rate in different water bodies worldwide. In India, CHAB events in water bodies such as Dal Lake have been sporadically reported with no study done to characterize the cyanobacterial species and their associated toxins. We hypothesized that this Lake is contaminated with toxic cyanobacterial species with the possibility of the presence of cyanotoxin biosynthetic genes. We, therefore, used some of the molecular tools such as 16S ribosomal DNA, PCR, and phylogenetic analysis to explore cyanobacterial species and their associated toxins. A 3-year (2018–2020) survey was conducted at three different sampling sites of Dal Lake namely, Grand Palace Gath (S1), Nigeen basin (S2), and Gagribal basin (S3). Two strains of Dolichospermum sp. AE01 and AE02 (S3 and S1 site) and one strain of Microcystis sp. AE03 (S2 site) was isolated, cultured, and characterized phylogenetically by 16S ribosomal DNA sequencing. The presence of cyanotoxin genes from the isolates was evaluated by PCR of microcystins (mcyB), anatoxins (anaC), and cylindrospermopsins (pks) biosynthesis genes. Results revealed the presence of both mcyB and pks gene in Microcystis sp. AE03, and only anaC gene in Dolichospermum sp. AE02 strain. However, Dolichospermum sp. AE01 strain was not found to harbor any such genes. Our findings, for the first time, reported the coexistence of pks and mcyB in a Microcystis AE03 strain. This study has opened a new door to further characterize the unexplored cyanobacterial species, their associated cyanotoxin biosynthetic genes, and the intervention of high-end proteomic techniques to characterize the cyanotoxins.

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Natural and anthropogenic dispersal of cyanobacteria: a review

Curren

Leong

2020

Hydrobiologia

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New record of a bloom forming, genotoxic strain Nodularia strain (KT447209) from Andaman and Nicobar Islands, India

Cited by 4 publications

References 30 publications

Abundant Cyanobacteria in Autumn Adhering to the Heating, Ventilation, and Air-Conditioning (HVAC) in Shanghai

Abundant Cyanobacteria in Autumn Adhering to the Heating, Ventilation, and Air-Conditioning (HVAC) in Shanghai

Microcystis sp. AE03 strain in Dal Lake harbors cylindrospermopsin and microcystin synthetase gene cluster

Natural and anthropogenic dispersal of cyanobacteria: a review

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