Olive Schreiner : women, nature, culture

Bibliography: pages 102-112.This dissertation locates Olive Schreiner as a nineteenth-century colonial woman writer who challenges the traditional association of men with culture, and women with nature. In Schreiner's writing the oppression of women is situated within an understanding of the social construction of "woman" as closer to nature than man. Through the lives of her central female characters, Schreiner shows how this definition of "woman" works to position women as "other" to culture, both preventing their access to public power and marginalising their fully social activities within culture. Schreiner attempts to displace definitions of culture constituted through a system of binary oppositions which inevitably privilege masculinity as opposed to femininity by redefining culture in three distinct ways. The patriarchal conception culture as the sole preserve of men is rejected in Schreiner's demands for women's educational and legal equality, and for their right to economic independence. Conventional notions of culture are equally refused in Schreiner's stress on women's traditional domestic labour as essential to the very emergence and continuation of culture. Finally, the deconstruction of sexual difference as a fixed immutable category within Schreiner's writing exposes the definition of "woman" as socially constructed and legitimated. The contradictions and tensions within and between these demands illustrate the limits of Schreiner's feminist and socialist politics, and point to how her writing both challenges and articulates aspects of dominant nineteenth-century ideology. At the same time, such contradictions were vitally important in motivating Schreiner's on-going attempt to change radically the position of women within culture. Moreover, the co-existence of apparently conflicting demands within Schreiner's redefinition of culture suggests the terms of a resolution of the perennial problem within feminist discourse around competing claims for women's equality or for a recognition of their difference

Nitrogen Challenges and Opportunities for Agricultural and Environmental Science in India

In the last six decades, the consumption of reactive nitrogen (Nr) in the form of fertilizer in India has been growing rapidly, whilst the nitrogen use efficiency (NUE) of cropping systems has been decreasing. These trends have led to increasing environmental losses of Nr, threatening the quality of air, soils, and fresh waters, and thereby endangering climate-stability, ecosystems, and human-health. Since it has been suggested that the fertilizer consumption of India may double by 2050, there is an urgent need for scientific research to support better nitrogen management in Indian agriculture. In order to share knowledge and to develop a joint vision, experts from the UK and India came together for a conference and workshop on “Challenges and Opportunities for Agricultural Nitrogen Science in India.” The meeting concluded with three core messages: (1) Soil stewardship is essential and legumes need to be planted in rotation with cereals to increase nitrogen fixation in areas of limited Nr availability. Synthetic symbioses and plastidic nitrogen fixation are possibly disruptive technologies, but their potential and implications must be considered. (2) Genetic diversity of crops and new technologies need to be shared and exploited to reduce N losses and support productive, sustainable agriculture livelihoods. Móring et al. Nitrogen Challenges and Opportunities (3) The use of leaf color sensing shows great potential to reduce nitrogen fertilizer use (by 10–15%). This, together with the usage of urease inhibitors in neem-coated urea, and better management of manure, urine, and crop residues, could result in a 20–25% improvement in NUE of India by 2030

Towards the genetic engineering of triacylglycerols of defined fatty acid composition: major changes in erucic acid content at the sn-2 position affected by the introduction of a 1-acyl-sn-glycerol-3-phosphate acyltransferase from Limnanthes douglasii into oil seed rape

A cDNA encoding a 1-acyl-sn-glycerol-3-phosphate acyltransferase from Limnanthes douglasii was introduced into oil seed rape (Brassica napus) under the control of a napin promoter. Seed triacylglycerols from transgenic plants were analysed by reversed-phase HPLC and trierucin was detected at a level of 0.4% and 2.8% in two transgenic plants but was not found in untransformed rape seed. Total fatty acid composition analysis of seeds from these selected plants revealed that the erucic acid content was no higher than the maximum found in the starting population. Analysis of fatty acids at the sn-2 position showed no erucic acid in untransformed rape but in the selected transgenic plants 9% (mol/mol) and 28.3% (mol/mol) erucic acid was present. These results conclusively demonstrate that the gene from L. douglasii encodes a 1-acyl-sn-glycerol-3-phosphate acyltransferase which can function in rape and incorporate erucic acid at the sn-2 position of triacylglycerols in seed. Additional modifications may further increase levels of trierucin