Researchers at King Abdullah University of Science and Technology (KAUST) found that restoring a key cellular molecule, NAD+, can partially reverse the effects of acidic stress in human cells. Published in Communications Biology, their study utilized a precisely controlled bioreactor system to investigate how mild extracellular acidity disrupts cellular energy generation and mitochondrial function. The research identified NAD+ depletion as a key underlying mechanism and demonstrated that NMN supplementation partially restored cellular function and reduced mitochondrial dysfunction. Why it matters: These findings could inform future strategies to protect cells and support human health, particularly in diseases like cancer and inflammation where acidic conditions are common.
KAUST Associate Professor Liming Xiong is researching how plants adapt to drought conditions, focusing on reducing water consumption, increasing water uptake, and surviving under stress. His "whole plant" approach aims to identify major genes controlling water uptake, water loss, and cellular detoxification. The research seeks to develop plants that use water more efficiently or can be irrigated with brackish water, important for agriculture in Saudi Arabia. Why it matters: Understanding the molecular mechanisms of plant drought tolerance can help in breeding stress-tolerant crops suitable for the arid conditions in the region.
KAUST Discovery Professor Aranda's team has been researching coral adaptation to temperature and ocean acidification. The research is focused on the transgenerational aspect of this adaptation using controlled environments. The research has been ongoing for the past two years. Why it matters: Understanding the epigenetic mechanisms of climate resilience in corals is crucial for conservation efforts in the Red Sea and beyond.
Researchers from KAUST and the University of Padova studied how hyperoxia, or excessive oxygen supply, extends heat tolerance in marine ectotherms. The study, published in Science Advances, examined the role of photosynthetic organisms like seagrasses in producing oxygen in aquatic habitats. They found that increased oxygen availability helps coastal marine animals like crabs, sea cucumbers, and shellfish increase their resilience to rising temperatures. Why it matters: Understanding the interplay between oxygen levels and temperature tolerance can inform strategies for preserving marine ecosystems in the face of global warming.
KAUST and the National Center for Wildlife (NCW) discovered an unexpected ecosystem deep below the Farasan Bank coral reef system in the Red Sea. The deep waters were inhabited by corals, fish, and other animals thriving in low oxygen and high acidity conditions. Creatures showed coping strategies like slower swimming and healthy coral growth despite conditions normally preventing calcification. Why it matters: The discovery highlights the Red Sea's significance as a natural laboratory for studying marine resilience to climate change, expanding our understanding of how marine life adapts to extreme conditions.
KAUST researchers are studying coral reefs in the Northern Red Sea, which exhibit unusual heat tolerance, surviving temperatures 5°C above the mean summer maximum. This resilience makes them a potential refuge for coral, offering a "climate change insurance" for the next 100 years. Researchers aim to understand the mechanisms behind this thermotolerance to aid coral conservation efforts globally. Why it matters: Understanding and preserving these unique coral reefs could provide crucial insights and strategies for protecting coral ecosystems worldwide in the face of rising ocean temperatures.
KAUST researchers have discovered that the bacterium Enterobacter sp. SA187, found in desert plants, enhances plant salt tolerance by triggering sulfur metabolism. Salt stress prompts the bacteria to release sulfur metabolites, which then generate the antioxidant glutathione in the plant, protecting it from salt-induced damage. A KAUST startup aims to commercialize SA187 as a probiotic treatment for seeds and crops. Why it matters: This research offers a biotechnological approach to enable saline agriculture, which is crucial for water-scarce regions like Saudi Arabia that rely on energy-intensive desalination.
KAUST researchers have discovered how sea anemones recycle nitrogen waste, allowing them to thrive in nutrient-poor ocean environments. The study used laser microdissection and single-cell RNA-sequencing to analyze tissue-specific gene expression in Aiptasia. They found that anemones distribute glucose received from symbionts across tissues to recycle nitrogen waste. Why it matters: This research enhances understanding of coral reef ecosystems and their resilience, which is particularly relevant for Red Sea biodiversity and Saudi Arabia's environmental efforts.