A Prasanna

King Abdullah University of Science and Technology

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J M Jeni

B.R. Sona

Marcela Herrera

Okinawa Institute of Science and Technology Graduate University

B. Anusri Mahalakshmi

PSG INSTITUTE OF TECHNOLOGY AND APPLIED RESEARCH

Shannon G. Klein

King Abdullah University of Science and Technology

Manuel Aranda

King Abdullah University of Science and Technology

N S Chandrasekhara

Sara Campana

University of Amsterdam

Carlos M. Duarte

King Abdullah University of Science and Technology

Jit Ern Chen

Sunway University

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King Abdullah University of Science and Technology

Red Sea University

Google (United States)

Tamil Nadu Dr. J Jayalalitha Fisheries University

Okinawa Institute of Science and Technology Graduate University

Universidad de Costa Rica

University of Chile

PSG INSTITUTE OF TECHNOLOGY AND APPLIED RESEARCH

Clinical Research Institute

University at Buffalo, State University of New York

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Exploring the Vital Role of Coral Disease in Coral Reef Sustainability: A Comprehensive Analysis

Asian Journal of Environment & Ecology (2024)

K S Susmaa J M Jeni A Prasanna D. Manikandavelu B.R. Sona

Coral reefs are one of the most bio diverse ecosystems in the world. These are also regarded as one of the major productive ecosystem. The commonly reported threats to coral health include bleaching, over exploitation of fish stocks, destructive fishing and the rapid man-made development in the coastal areas. These environmental impacts have paved the way to the emergence of coral disease and are considered as the most serious issue of coral reefs deterioration. Globally, the major diseases affecting corals are Black band disease, White band disease, Aspergillosis, Dark spot disease, Stony coral disease, Pink line syndrome, Yellow band disease, and Skeletal eroding diseases. In this paper, all the diseases affecting the corals are elaborately discussed.

Coral reef organizations

Aquaculture of coral

10.9734/ajee/2024/v23i8582

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Forest and the Law

A Prasanna N S Chandrasekhara

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Forest and the Law: problems and perspectives

INFLIBNET (1993)

A Prasanna

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Temperature transcends partner specificity in the symbiosis establishment of a cnidarian

The ISME Journal (2020)

Marcela Herrera Shannon G. Klein Sara Campana Jit Ern Chen A Prasanna

Abstract Coral reef research has predominantly focused on the effect of temperature on the breakdown of coral-dinoflagellate symbioses. However, less is known about how increasing temperature affects the establishment of new coral-dinoflagellate associations. Inter-partner specificity and environment-dependent colonization are two constraints proposed to limit the acquisition of more heat tolerant symbionts. Here, we investigated the symbiotic dynamics of various photosymbionts in different host genotypes under “optimal” and elevated temperature conditions. To do this, we inoculated symbiont-free polyps of the sea anemone Exaiptasia pallida originating from Hawaii (H2), North Carolina (CC7), and the Red Sea (RS) with the same mixture of native symbiont strains (Breviolum minutum, Symbiodinium linucheae, S. microadriaticum, and a Breviolum type from the Red Sea) at 25 and 32 °C, and assessed their ITS2 composition, colonization rates, and PSII photochemical efficiency (Fv/Fm). Symbiont communities across thermal conditions differed significantly for all hosts, suggesting that temperature rather than partner specificity had a stronger effect on symbiosis establishment. Overall, we detected higher abundances of more heat resistant Symbiodiniaceae types in the 32 °C treatments. Our data further showed that PSII photophysiology under elevated temperature improved with thermal pre-exposure (i.e., higher Fv/Fm), yet, this effect depended on host genotype and was influenced by active feeding as photochemical efficiency dropped in response to food deprivation. These findings highlight the role of temperature and partner fidelity in the establishment and performance of symbiosis and demonstrate the importance of heterotrophy for symbiotic cnidarians to endure and recover from stress.

Geomicrobiology

10.1038/s41396-020-00768-y

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