Summary Bacteroidetes are thought to be specialized for the degradation of algae‐derived ocean polysaccharides. Here, we show that Bacteroidetes are the predominant phylum in deep‐sea sediments and possess more genes associated with polysaccharides degradation than other bacteria. We have isolated a novel Bacteroidetes species from the deep‐sea sediments by using a special polysaccharide containing medium, Maribellus comscasis...

Summary Photoreceptors are found in all kingdoms of life and bacteriophytochromes (Bphps) are the most abundant photo‐sensing receptors in bacteria. Interestingly, BphPs have been linked to some bacterial physiological responses, yet most of the biological processes they regulate are still elusive, especially in non‐photosynthetic bacteria. Here, we show that a bacteriophytochrome (CmoBphp) from a deep‐sea bacterium Croceicocc...

Summary The cell wall integrity (CWI) signaling activates the transcription factor Swi6 through a MAPK signaling cascade in response to cell wall stresses. In this study, we observed two different mRNA variants of swi6 ( GlSwi6A and GlSwi6B ) existed, due to alternative splicing. Besides, the expression level of GlSwi6B was higher than that of the GlSwi6A mRNA variant. The co‐silencing of GlSwi6A and GlSwi6B was more sensitive...

Summary Cadmium (Cd) is a common toxic heavy metal in the environment, and bacteria have evolved different strategies against Cd‐toxicity. Here, we found that marine bacterium Bacillus sp. 98 could significantly alleviate Cd‐toxicity by recruiting calcium (Ca) for reducing excessive intracellular nitric oxide (NO) and enhancing iron acquisition. To investigate the underlying mechanisms, mass spectrometry‐based proteomic analys...