adaptive role
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2022 ◽  
Vol 6 (1) ◽  
Author(s):  
Ageng Abdi Putra ◽  
Muhammad Rosyidi ◽  
Febriati Astuti ◽  
Nurul Ilmi

Background : In 2018, Lombok had earthquake for about 3 weeks which killed a lot of victims, disaster and make people become refugees. Disaster makes stress and trauma for victims that need to adapt with new environment to fulfill their basic needs especially balanced nutrition. This research is aimed at identifying the correlation between the pattern of adaptation of parent’s post disaster role and the fulfillment of balanced nutrition of toddlers.Method : This research is designed as correlational study with Cross-sectional approach. The samples were 89 respondents selected through proportional random sampling technique. The data were collected using 2 types of questionnaires distributes to women with toddlers.Result : The research showed that of 89 respondents, 63 respondents (70.2%) had the adaptive role, 26 of them (29.2%) had ineffective role. In relation to balanced nutrition, it is 67 respondents (75.2%) that fulfill the balanced nutrition. Statistic test of spearmen rank’s correlation showed that (rho) value < 0.05 (0.00<0.05) which means that Ha is accepted. The correlation value is 0.584 meaning that there is strong and positive correlation.Conclution : It is inferred that there is correlation between the pattern of adaptation of parent’s post disaster role and the fulfillment of balanced nutrition of toddlers in Jenggala.


eLife ◽  
2022 ◽  
Vol 11 ◽  
Author(s):  
Marco Todesco ◽  
Natalia Bercovich ◽  
Amy Kim ◽  
Ivana Imerovski ◽  
Gregory L Owens ◽  
...  

Variation in floral displays, both between and within species, has been long known to be shaped by the mutualistic interactions that plants establish with their pollinators. However, increasing evidence suggests that abiotic selection pressures influence floral diversity as well. Here, we analyse the genetic and environmental factors that underlie patterns of floral pigmentation in wild sunflowers. While sunflower inflorescences appear invariably yellow to the human eye, they display extreme diversity for patterns of ultraviolet pigmentation, which are visible to most pollinators. We show that this diversity is largely controlled by cis-regulatory variation affecting a single MYB transcription factor, HaMYB111, through accumulation of ultraviolet (UV)-absorbing flavonol glycosides in ligules (the ‘petals’ of sunflower inflorescences). Different patterns of ultraviolet pigments in flowers are strongly correlated with pollinator preferences. Furthermore, variation for floral ultraviolet patterns is associated with environmental variables, especially relative humidity, across populations of wild sunflowers. Ligules with larger ultraviolet patterns, which are found in drier environments, show increased resistance to desiccation, suggesting a role in reducing water loss. The dual role of floral UV patterns in pollinator attraction and abiotic response reveals the complex adaptive balance underlying the evolution of floral traits.


2021 ◽  
Author(s):  
Roth E. Conrad ◽  
Tomeu Viver ◽  
Juan F. Gago ◽  
Janet K. Hatt ◽  
Stephanus N. Venter ◽  
...  

mSphere ◽  
2021 ◽  
Author(s):  
N. A. Kireeva ◽  
S. S. Sokolov ◽  
E. A. Smirnova ◽  
K. V. Galkina ◽  
F. F. Severin ◽  
...  

Eukaryotic microorganisms harbor elements of programmed cell death (PCD) mechanisms that are homologous to the PCD of multicellular metazoa. However, it is still debated whether microbial PCD has an adaptive role or whether the processes of cell death are an aimless operation in self-regulating molecular mechanisms.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Bruno Serranito ◽  
Marco Cavalazzi ◽  
Pablo Vidal ◽  
Dominique Taurisson-Mouret ◽  
Elena Ciani ◽  
...  

AbstractSmall ruminants are suited to a wide variety of habitats and thus represent promising study models for identifying genes underlying adaptations. Here, we considered local Mediterranean breeds of goats (n = 17) and sheep (n = 25) from Italy, France and Spain. Based on historical archives, we selected the breeds potentially most linked to a territory and defined their original cradle (i.e., the geographical area in which the breed has emerged), including transhumant pastoral areas. We then used the programs PCAdapt and LFMM to identify signatures of artificial and environmental selection. Considering cradles instead of current GPS coordinates resulted in a greater number of signatures identified by the LFMM analysis. The results, combined with a systematic literature review, revealed a set of genes with potentially key adaptive roles in relation to the gradient of aridity and altitude. Some of these genes have been previously implicated in lipid metabolism (SUCLG2, BMP2), hypoxia stress/lung function (BMPR2), seasonal patterns (SOX2, DPH6) or neuronal function (TRPC4, TRPC6). Selection signatures involving the PCDH9 and KLH1 genes, as well as NBEA/NBEAL1, were identified in both species and thus could play an important adaptive role.


2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Borja Figueirido ◽  
Alberto Martín-Serra ◽  
Alejandro Pérez-Ramos ◽  
David Velasco ◽  
Francisco J. Pastor ◽  
...  

AbstractOrganisms comprise multiple interacting parts, but few quantitative studies have analysed multi-element systems, limiting understanding of phenotypic evolution. We investigate how disparity of vertebral morphology varies along the axial column of mammalian carnivores — a chain of 27 subunits — and the extent to which morphological variation have been structured by evolutionary constraints and locomotory adaptation. We find that lumbars and posterior thoracics exhibit high individual disparity but low serial differentiation. They are pervasively recruited into locomotory functions and exhibit relaxed evolutionary constraint. More anterior vertebrae also show signals of locomotory adaptation, but nevertheless have low individual disparity and constrained patterns of evolution, characterised by low-dimensional shape changes. Our findings demonstrate the importance of the thoracolumbar region as an innovation enabling evolutionary versatility of mammalian locomotion. Moreover, they underscore the complexity of phenotypic macroevolution of multi-element systems and that the strength of ecomorphological signal does not have a predictable influence on macroevolutionary outcomes.


2021 ◽  
Author(s):  
Álvaro Chiner-Oms ◽  
Mariana Gabriela López ◽  
Iñaki Comas

Genetic differences between different Mycobacterium tuberculosis complex (MTBC) strains determine their ability to transmit within different host populations, their latency times, and their drug-resistance profiles. Said differences usually emerge through de novo mutations and are maintained or discarded by the balance of evolutionary forces. Using a dataset of ~5,000 strains representing global MTBC diversity, we determined the past and present selective forces that have shaped the current variability observed in the pathogen population. We identified regions that have evolved under changing types of selection since the time of the MTBC common ancestor. Our approach highlighted striking differences in the genome regions relevant for host-pathogen interaction and, in particular, suggested an adaptive role for the sensor protein of two-component systems. In addition, we applied our approach to successfully identify potential determinants of resistance to drugs administered as second-line tuberculosis treatments.


Author(s):  
Emiko S. Kashima ◽  
Danielle P. Ochoa ◽  
Gandalf Nicolas ◽  
Getrude C. Ah Gang ◽  
Hongfei Du ◽  
...  
Keyword(s):  

2021 ◽  
Author(s):  
Marco Todesco ◽  
Natalia Bercovich ◽  
Amy Kim ◽  
Ivana Imerovski ◽  
Gregory L Owens ◽  
...  

Variation in floral displays, both between and within species, has been long known to be shaped by the mutualistic interactions that plants establish with their pollinators. However, increasing evidence suggests that abiotic selection pressures influence floral diversity as well. Here we analyze the genetic and environmental factors that underlie patterns of floral pigmentation in wild sunflowers. While sunflower inflorescences appear invariably yellow to the human eye, they display extreme diversity for patterns of ultraviolet pigmentation, which are visible to most pollinators. We show that this diversity is largely controlled by cis-regulatory variation at a single MYB transcription factor, HaMYB111, through accumulation of UV-absorbing flavonol glycosides. As expected, different patterns of ultraviolet pigments in flowers have a strong effect on pollinator preferences. However, variation for floral ultraviolet patterns is also associated with environmental variables, especially relative humidity, across populations of wild sunflowers. Larger ultraviolet patterns, which are found in drier environments, limit transpiration, therefore reducing water loss. The dual role of floral UV patterns in pollination attraction and abiotic responses reveals the complex adaptive balance underlying the evolution of floral traits.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fahd Yazin ◽  
Moumita Das ◽  
Arpan Banerjee ◽  
Dipanjan Roy

AbstractEpisodic memories are contextual experiences ordered in time. This is underpinned by associative binding between events within the same contexts. The role of prediction errors in declarative memory is well established but has not been investigated in the time dimension of complex episodic memories. Here we combine these two properties of episodic memory, extend them into the temporal domain and demonstrate that prediction errors in different naturalistic contexts lead to changes in the temporal ordering of event structures in them. The wrongly predicted older sequences were weakened despite their reactivation. Interestingly the newly encoded sequences with prediction errors, seen once, showed accuracy as high as control sequences which were viewed repeatedly without change. Drift–diffusion modelling revealed a lower decision threshold for the newer sequences than older sequences, reflected by their faster recall. Moreover, participants’ adjustments to their decision threshold significantly correlated with their relative speed of sequence memory recall. These results suggest a temporally distinct and adaptive role for prediction errors in learning and reorganizing episodic temporal sequences.


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