Huu Hao Ngo

Abstract Viruses are integral yet underexplored components of coral holobionts, with their roles in shaping microbial diversity, modulating symbioses, and contributing to Darwin’s paradox remaining largely unresolved. Here, we present the Global Coral Holobiont Virome Database (GCHVD), encompassing 76,755 viral contigs and 36,860 unique viral operational taxonomic units (vOTUs) identified from 36 coral species across 18 regions worldwide.

1. Introduction In the circular economy, recovery and recycling of resources are becoming more critical perspectives in wastewater treatment beyond reducing the contaminants [1,2]. Carbon neutrality is presently a much-debated topic for wastewater treatment plants, involving conversations around the reduction of energy consumption, energy resources recovery, and greenhouse gas (GHG) emissions [3,4,5].

A common and long-existing operational issue of wastewater denitrification is the unexpected accumulation of nitrite (NO2–) that could suppress the activity of various microorganisms involved in biological wastewater treatment process and nitrous oxide (N2O) that could emit as a potent greenhouse gas.