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Biology

Diversified diazotrophs associated with the rhizosphere of Western Indian Himalayan native red kidney beans (Phaseolus vulgaris L.)
submitted by sflonniry2 17 minutes ago - Topic: Biology
Red kidney beans (RKBs) are one of the major components in the human diet of Western Indian Himalaya (WIH). Their cultivation in these habitats is strongly influenced by various biotic and abiotic stresses and therefore, there must be a selection of RKB associated microorganisms that are adapted to these harsh conditions. Seven cold adaptive diazotrophs from the same rhizosphere were isolated i...



Sinojohnstonia ruhuaii (Boraginaceae), a New Species from Jiangxi, China
submitted by blaiail 36 minutes ago - Topic: Biology
Sinojohnstonia Hu (Boraginaceae, Trigonotideae) is endemic to China and previously included only three species. Sinojohnstonia ruhuaii W. B. Liao & Lei Wang, a new species from Jiangxi, China, is described and illustrated. The new species is most closely related to S. chekiangensis (Migo) W. T. Wang by its morphology and differs in that its flowers are smaller, the corolla limb is slightly ...

A New Species of Burmeistera (Campanulaceae, Lobelioideae) from the Western Cordillera of Colombia
submitted by blaiail 38 minutes ago - Topic: Biology
Burmeistera salicifolia Garzón, Luteyn & F. González (Campanulaceae, Lobelioideae), a new species from the departments of Chocó and Valle del Cauca in Colombia, is illustrated and described, and its affinities are discussed. The species is a small epiphytic to terrestrial herb with a green corolla. It stands out from other species by its narrow leaves with brochidodromous venation; the s...

Three New Combinations and a Replacement Name in Eurasian Senecio (Compositae, Senecioneae)
submitted by blaiail 38 minutes ago - Topic: Biology
Three new combinations (Compositae, Senecioneae), Senecio doronicum (L.) L. subsp. longifolius (Willk.) J. Calvo, S. macedonicus Griseb subsp. barckhausiifolius (Boiss. & Heldr.) J. Calvo, and S. racemosus (M. Bieb.) DC. subsp. kirghisicus (DC.) J. Calvo, are here proposed, as well as the replacement name S. doronicum subsp. orientalis J. Calvo for S. orientalis Ten. The names S. doronicum ...

Patterns and Processes in Plant Phylogeography in the Mediterranean Basin. A Review
submitted by bregetti 1 hour ago - Topic: Biology
Phylogeography, born to bridge population genetics and phylogenetics in an explicit geographic context, has provided a successful platform for unveiling species evolutionary histories. The Mediterranean Basin, one of the earth's 25 biodiversity hotspots, is known for its complex geological and palaeoclimatic history. ing to throw light on the causes and circumstances that underlie such a rich b...



Are MTCs tethering complexes or trafficking complexes that may act as tethers?
submitted by f2060o 1 hour ago - Topic: Biology
Since the late 1990s, a number of multisubunit tethering complexes (MTCs) have been described that function in membrane trafficking events: TRAPP I, TRAPP II, TRAPP III, COG, HOPS, CORVET, Dsl1, GARP and exocyst. Based mainly on structural and sequence similarities, they have been categorized as complexes associated with tethering containing helical rods (CATCHR) (Dsl1, COG, GARP, exocyst) or...

Prioritization of emotional signals by the human auditory system: evidence from a perceptual hysteresis protocol
submitted by hetz2333 2 hours ago - Topic: Biology
It is expected that natural selection has endowed our auditory apparatus with the ability to adaptively prioritize information that is crucial for survival and reproduction, such as vocal emotional signals emitted by our conspecifics, even in a noisy and dynamic natural environment (signals progressively emerge or fade away in noise as conspecifics move towards or away from us). Here, we tested...


A functional high-content miRNA screen identifies miR-30 family to boost recombinant protein production in CHO cells
submitted by amor 2 hours ago - Topic: Biology
The steady improvement of mammalian cell factories for the production of biopharmaceuticals is a key challenge for the biotechnology community. Recently, small regulatory microRNAs (miRNAs) were identified as novel targets for optimizing Chinese hamster ovary (CHO) production cells as they do not add any translational burden to the cell while being capable of regulating entire physiological pat...

A wheat aminocyclopropane-1-carboxylate oxidase gene, TaACO1, negatively regulates salinity stress in Arabidopsis thaliana
submitted by goremo 3 hours ago - Topic: Biology
TaACO1 could catalyze ACC into ethylene in vitro. Constitutive expression ofTaACO1in Arabidopsis conferred salt sensitivity, andTaACO1regulates salt stress mainly via the DREB1/CBF signal transduction pathway. Ethylene signaling plays essential roles in mediating plant responses to biotic and abiotic stresses, besides regulating plant growth and development. The roles of ethylene biosynthesis i...


Improved expression of recombinant plant-made hEGF
submitted by goremo 3 hours ago - Topic: Biology
The yield of recombinant hEGF was increased approximately tenfold through a range of optimisations. Further, the recombinant protein was found to have biological activity comparable to commercial hEGF. Human epidermal growth factor (hEGF) is a powerful mitogen that can enhance the healing of a wide range of injuries, including burns, cuts, diabetic ulcers and gastric ulcers. However, despite it...

Pacific-wide reef resistance to OA
submitted by rabhawett 4 hours ago - Topic: Biology
Ocean acidification (OA) and its associated decline in calcium carbonate saturation states is one of the major threats that tropical coral reefs face this century. Previous studies of the effect of OA on coral reef calcifiers have described a wide variety of outcomes for studies using comparable partial pressure of CO2 (pCO2) ranges, suggesting that key questions remain unresolved. One unresolv...


Heritable variation in glucocorticoids
submitted by rabhawett 4 hours ago - Topic: Biology
Glucocorticoid hormones (CORT) are predicted to promote adaptation to variable environments, yet little is known about the potential for CORT secretion patterns to respond to selection in free-living populations. We assessed the heritable variation underlying differences in hormonal phenotypes using a cross-foster experimental design with nestling North American barn swallows (Hirundo rustica e...

Effects of Deception in Social Networks
submitted by rabhawett 4 hours ago - Topic: Biology
Honesty plays a crucial role in any situation where organisms exchange information or resources. Dishonesty can thus be expected to have damaging effects on social coherence if agents cannot trust the information or goods they receive. However, a distinction is often drawn between prosocial lies (‘white’ lies) and antisocial lying (i.e. deception for personal gain), with the former ...

Male receiver bias for agonistic signal
submitted by rabhawett 4 hours ago - Topic: Biology
Receiver bias models of signal evolution are typically regarded as alternatives or complements to ornament evolution due to coevolving mate choice, whereas sexually or socially selected agonistic signals are rarely studied with respect to receiver psychology. Against the background of convergent evolution of red agonistic signals from yellow ancestors in the genus Euplectes (widowbirds and bish...

Adaptive evolution of index signals
submitted by rabhawett 4 hours ago - Topic: Biology
Animals often convey useful information, despite a conflict of interest between the signaller and receiver. There are two major explanations for such ‘honest’ signalling, particularly when the size or intensity of signals reliably indicates the underlying quality of the signaller. Costly signalling theory (including the handicap principle) predicts that dishonest signals are too cos...