Two new Polyangium species, P. aurulentum sp. nov. and P. jinanense sp. nov., isolated from a soil sample

Chromosomal organization of biosynthetic gene clusters suggests plasticity of myxobacterial specialized metabolism including descriptions for nine novel species:Archangium lansiniumsp. nov.,Myxococcus landrumussp. nov.,Nannocystis bainbridgeasp. nov.,Nannocystis poenicansasp. nov.,Nannocystis radixulmasp. nov.,Polyangium mundeleiniumsp. nov.,Pyxidicoccus parkwaysissp. nov.,Sorangium ateriumsp. nov.,Stigmatella ashevillenasp. nov

“…Unlike Nannocystis konarekensis, N. exedans , and N. pusilla , none of the Nannocystis strains grew at pH 10. Temperature and pH-dependent growth ranges for RJM3 are notably different from other Polyangium , which all grow at temperatures above 30°C and pH ranges of 6-8.5 (15). The growth profile and biochemical activity of SCPEA02 were closely aligned with the reported activities of Py.…”

“…Isolate RJM3 is most phylogenetically similar to Polyangium fumosum DSM 14688 T (Figure 2C). However, only three of ten Polyangium type strains have sufficient 16S rRNA and genome sequence data suitable for thorough analysis (15, 24). Isolate SCPEA02 is most phylogenetically similar to Pyxidicoccus caerfyrddinensis CA032A T (Figure 2G) (11).…”

“…Ongoing natural product discoveries from novel species of myxobacteria reinforce the need for continued isolation and characterization of environmental myxobacteria (6)(7)(8)(9). Most recently described Myxococcota belong to the genera Corallococcus, Myxococcus, and Pyxidicoccus (10)(11)(12)(13)(14), and comparatively fewer members of lesser-studied myxobacterial taxa have been reported over the last decade (15)(16)(17). For example, no new type strain Stigmatella has been reported since 2007.…”

Concepts and conjectures concerning predatory performance of myxobacteria

“…Technological and methodological advances over decades have introduced challenges to traditionally accepted theories and premises related to predatory myxobacteria. The transition from morphology-based classification of myxobacteria to a combination of traditional methods and comparative genomics has resulted in various taxonomic reassignments and proposed updates ( Awal et al, 2017 ; Waite et al, 2020 ; Ahearne et al, 2021 ), and descriptions from newly discovered myxobacteria often include predation data ( Figure 2 ; Fudou et al, 2002 ; Sanford et al, 2002 ; Iizuka et al, 2003a , b , 2013 ; Reichenbach et al, 2006 ; Garcia et al, 2009 , 2014 , 2016 ; Mohr et al, 2012 , 2018a , b ; Yamamoto et al, 2014 ; Sood et al, 2015 ; Awal et al, 2016 , 2017 ; Moradi et al, 2017 ; Garcia and Muller, 2018 ; Chambers et al, 2020 ; Livingstone et al, 2020 ; Wang et al, 2021a ; Zhou et al, 2021 ). Myxobacteria are often split into two groups based on presumed nutritional preferences or needs, predatory myxobacteria that acquire nutrients from prey lysate and cellulolytic myxobacteria ( Shimkets et al, 2006 ; Mohr, 2018 ).…”

Understanding the ecological effects of the fungicide difenoconazole on soil and Enchytraeus crypticus gut microbiome

“…Besides, we identified the significantly different genera in the microbiome, which presented a gradient response to the difenoconazole dose, such as Bradyrhizobium, Kaistia, Polyangium, and Blautia, which decreased gradually in contaminated treatments. Interestingly, Bradyrhizobium, Kaistia, and Polyangium are mainly involved in nitrogen fixation (Favero et al, 2022), biodegrading aromatic compounds (Liao et al, 2021), and promoting plant growth (Wang et al, 2021b). More importantly, the Blautia genus contributes to anti-inflammatory responses to maintain intestinal health (Wang et al, 2019;Zhou et al, 2021a).…”