202 research outputs found

    The Persistence of Political Power: A Communist ‘Party Village’ in Kerala and the Paradox of Egalitarian Hierarchies

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    This article combines political analysis with ethnographic fieldwork to theorise Communist party’s construction of political allegiance and their persistence of power in the democratic context at a local village level in the state of Kerala in India. We provide an inaugural scholarly conceptualisation of an empirical phenomenon, known in Kerala popular parlance as ‘party gramam’ or the ‘party village’, as the focus of analysis. As we explain, a ‘party village’ is an administrative unit where a particular political party dominates not simply electorally but in all lived experience. We posit that the concept of ‘party village’ is of specific value in our understanding of various forms of current (Communist) politics. The original ascendancy of communism in the village (as in many regions of Kerala) during the twentieth century was due to its progressive ideological challenge to feudal structures of class and caste oppression. However, in democratic post-independence India, the overwhelming dominance of Communist Party in the 'party village' presents the paradox of a party with an egalitarian ideology having adapted to a persistent Hindu caste hierarchy. After situating our work within the conceptual problematisations of political party competition, and in conversation with wider communist studies literature, we provide a background to the politics of Kerala and explain the unique phenomenon of ‘party villages’ in Kerala. We then provide an insight into the social and economic structures of one such village, explaining the salience of these structures in relation to political allegiances. Next, we illustrate the paradox of continued caste hierarchies in a Communist Party village, and the multiple ways in which Hindu religion and caste structures are important to performing individual identity in social settings. We dissect the various means through which the grassroots Communist Party apparatus in the village maintains its dominance by adapting itself to regressive caste hierarchies for political profit at the same time as laying claim to having challenged them. In our concluding section, we place our village observations in the longer frame of historical north Kerala village politics, noting the changes over time and offering theoretical perspectives upon them. In this sense, through a mix of empirical observation with historical context and theorisation, we highlight the importance and the implications of unconventional democratic dynamics more generally

    Comparison of the two different recombinant proteins representing region II of the duffy binding protein of plasmodium vivax by assaying for natural antibodies

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    Two different recombinant proteins representing region II of the Duffy Binding Protein of Plasmodium vivax, DBP and PvRII expressed in the bacculovirus and Eschericia coli vector systems, respectively, were compared by assaying the total immunoglobulin (IgM + IgG) responses of sera of patients with acute vivax malaria in an indirect ELISA. The patients were from two malaria endemic areas, Anuradhapura (n=64) and Kataragama (n=90), and a nonendemic area, Colombo (n=90). The antibody prevalence was 50% and 44% from Anuradhapura, 39% and 28% Kataragama and 57% and 41% from Colombo, for PvRII and DBP, respectively. The antibody prevalence for PvRII was higher than that for DBP in each test area, that was significant only in Colombo (p=0.001). The percentages of patients that they responded to both proteins were 34% (n=22), 19% (n=17) and 40% (n=36) from Anuradhapura, Kataragama and from Colombo, respectively. In comparison, a significantly lower (p=0.007) percentage of individuals from Kataragama responded to both proteins. Further 16% (n=10) from Anuradhapura, 19% (n=17) from Kataragama and 16% (n=14) from Colombo preferentially recognised PvRII, whereas, corresponding values for DBP were 9% (n=6), 10% (n=9) and 1% (n=1), respectively, where this difference was significant only in Colombo (p=0.031). Among the previously non-exposed patients from Colombo, 24% responded preferentially to PvRII whereas it was only 3% for DBP (p=0.021). On the other hand, of the previously exposed patients from Colombo, 10% preferentially responded to PvRII whereas no preferential recognition of DBP was observed (p=0.063). Thus the results of this study show a higher natural antibody response to recombinant protein PvRII, which represents the functional conformation of region II of the Duffy Binding Protein

    Drought resistance of Sorghum bicolor. 6. Changes in endogenous growth regulators of plants grown across an irrigation gradient

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    A gradient of water stress was created among sorghum plants with a line-source sprinkler irrigation system. Changes in endogenous growth regulators, leaf water potential (ψw), solute potential (ψs), leaf conductance, leaf temperature, leaf senescence, leaf area and plant height were monitored. Abscisic acid (AbA) levels were increased and phaseic acid (PA) levels were reduced under stress. IAA levels could not be related to stress. Leaf ψw, leaf ψs and leaf conductance were reduced and leaf temperature was increased by water stress. Leaf area development was more sensitive to stress than stem elongation. Linear correlations between irrigation, AbA, leaf ψw, leaf ψs and plant height were high (r > 0.9). The correlation between AbA and grain yield (r = − 0.65) was similar to that between irrigation and grain yield (r = 0.68), but opposite in sign. Leaf AbA content measured during early growth could thus be used to predict grain yield under a given irrigation regime.Key words: Abscisic acid, phaseic acid, indole-3-acetic acid, water stress, grain yield, sorghu

    SHINE Transcription Factors Act Redundantly to Pattern the Archetypal Surface of Arabidopsis Flower Organs

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    Floral organs display tremendous variation in their exterior that is essential for organogenesis and the interaction with the environment. This diversity in surface characteristics is largely dependent on the composition and structure of their coating cuticular layer. To date, mechanisms of flower organ initiation and identity have been studied extensively, while little is known regarding the regulation of flower organs surface formation, cuticle composition, and its developmental significance. Using a synthetic microRNA approach to simultaneously silence the three SHINE (SHN) clade members, we revealed that these transcription factors act redundantly to shape the surface and morphology of Arabidopsis flowers. It appears that SHNs regulate floral organs' epidermal cell elongation and decoration with nanoridges, particularly in petals. Reduced activity of SHN transcription factors results in floral organs' fusion and earlier abscission that is accompanied by a decrease in cutin load and modified cell wall properties. SHN transcription factors possess target genes within four cutin- and suberin-associated protein families including, CYP86A cytochrome P450s, fatty acyl-CoA reductases, GSDL-motif lipases, and BODYGUARD1-like proteins. The results suggest that alongside controlling cuticular lipids metabolism, SHNs act to modify the epidermis cell wall through altering pectin metabolism and structural proteins. We also provide evidence that surface formation in petals and other floral organs during their growth and elongation or in abscission and dehiscence through SHNs is partially mediated by gibberellin and the DELLA signaling cascade. This study therefore demonstrates the need for a defined composition and structure of the cuticle and cell wall in order to form the archetypal features of floral organs surfaces and control their cell-to-cell separation processes. Furthermore, it will promote future investigation into the relation between the regulation of organ surface patterning and the broader control of flower development and biological functions

    Contrasting Roles for TLR Ligands in HIV-1 Pathogenesis

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    The first line of a host's response to various pathogens is triggered by their engagement of cellular pattern recognition receptors (PRRs). Binding of microbial ligands to these receptors leads to the induction of a variety of cellular factors that alter intracellular and extracellular environment and interfere directly or indirectly with the life cycle of the triggering pathogen. Such changes may also affect any coinfecting microbe. Using ligands to Toll-like receptors (TLRs) 5 and 9, we examined their effect on human immunodeficiency virus (HIV)-1 replication in lymphoid tissue ex vivo. We found marked differences in the outcomes of such treatment. While flagellin (TLR5 agonist) treatment enhanced replication of CC chemokine receptor 5 (CCR 5)-tropic and CXC chemokine receptor 4 (CXCR4)-tropic HIV-1, treatment with oligodeoxynucleotide (ODN) M362 (TLR9 agonist) suppressed both viral variants. The differential effects of these TLR ligands on HIV-1 replication correlated with changes in production of CC chemokines CCL3, CCL4, CCL5, and of CXC chemokines CXCL10, and CXCL12 in the ligand-treated HIV-1-infected tissues. The nature and/or magnitude of these changes were dependent on the ligand as well as on the HIV-1 viral strain. Moreover, the tested ligands differed in their ability to induce cellular activation as evaluated by the expression of the cluster of differentiation markers (CD) 25, CD38, CD39, CD69, CD154, and human leukocyte antigen D related (HLA)-DR as well as of a cell proliferation marker, Ki67, and of CCR5. No significant effect of the ligand treatment was observed on apoptosis and cell death/loss in the treated lymphoid tissue ex vivo. Our results suggest that binding of microbial ligands to TLRs is one of the mechanisms that mediate interactions between coinfected microbes and HIV-1 in human tissues. Thus, the engagement of appropriate TLRs by microbial molecules or their mimetic might become a new strategy for HIV therapy or prevention

    The Toll-Like Receptor 4 (TLR4) Variant rs2149356 and Risk of Gout in European and Polynesian Sample Sets

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    Deposition of crystallized monosodium urate (MSU) in joints as a result of hyperuricemia is a central risk factor for gout. However other factors must exist that control the progression from hyperuricaemia to gout. A previous genetic association study has implicated the toll-like receptor 4 (TLR4) which activates the NLRP3 inflammasome via the nuclear factor-κB signaling pathway upon stimulation by MSU crystals. The T-allele of single nucleotide polymorphism rs2149356 in TLR4 is a risk factor associated with gout in a Chinese study. Our aim was to replicate this observation in participants of European and New Zealand Polynesian (Māori and Pacific) ancestry. A total of 2250 clinically-ascertained prevalent gout cases and 13925 controls were used. Non-clinically-ascertained incident gout cases and controls from the Health Professional Follow-up (HPFS) and Nurses Health Studies (NHS) were also used. Genotypes were derived from genome-wide genotype data or directly obtained using Taqman. Logistic regression analysis was done including age, sex, diuretic exposure and ancestry as covariates as appropriate. The T-allele increased the risk of gout in the clinically-ascertained European samples (OR = 1.12, P = 0.012) and decreased the risk of gout in Polynesians (OR = 0.80, P = 0.011). There was no evidence for association in the HPFS or NHS sample sets. In conclusion TLR4 SNP rs2143956 associates with gout risk in prevalent clinically-ascertained gout in Europeans, in a direction consistent with previously published results in Han Chinese. However, with an opposite direction of association in Polynesians and no evidence for association in a non-clinically-ascertained incident gout cohort this variant should be analysed in other international gout genetic data sets to determine if there is genuine evidence for association
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