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Effective Defence (effective + defence)
Selected AbstractsJames I, Gondomar and the Dissolution of the Parliament of 1621HISTORY, Issue 279 2000Brennan C. Pursell Letters written by Count Gondomar reveal that King James I devised a secret plan to dissolve the parliament of 1621 before it was recalled for a second session. Because of the escalating war in the Holy Roman Empire, James faced a belligerent parliament in England which pressured him to mount an effective defence of the Lower Palatinate against Spanish and imperial forces. James resisted and decided instead to maintain his rapport with Spain, and therefore it became necessary to sacrifice the parliament of 1621. Motivated by a genuine desire for peace, the king provoked a confrontation with the House of Commons in order to give him a pretext for dissolving parliament. [source] Law and the demoralisation of medicineLEGAL STUDIES, Issue 2 2006Jonathan Montgomery In his Dimbleby Lecture in December 2002, the Archbishop of Canterbury examined the effect of the emergence of the market state on the legitimacy of government activity in areas of morality. He suggested that, while this is becoming limited, the continuing need to provide a moral context for social life provided an opportunity for religious communities to play a crucial role. This paper suggests that the increasing significance of market concepts in healthcare law poses a similar challenge to the moral basis of medical practice, threatening to drive moral argument outside the scope of the discipline, with the consequent effect of undermining the values that drive good healthcare. Thus, the de-moralisation of medicine is also demoralising for those within the health professions. To counteract this tendency, a strong sense of a common moral community needs to be maintained amongst those engaged with the discipline of healthcare law. This paper also examines the role of law in this area. Traditionally, legal scholars have attacked the reluctance of legislators and the judiciary to wrestle from the grip of doctors the authority to determine ethical issues. The dominant view has been that this was a failure to recognise the fact that society has a stake in these matters and that legal non-intervention was an abdication of responsibility that undermines the rule of law. However, the integration of medical and moral decision making into a collaborative enterprise can also be seen as a more effective defence against the forces of demoralisation than the separation that the orthodox approach implies. If this is correct, then a key task for healthcare lawyers, as yet undeveloped, is to consider how to establish a legitimate common moral community, and what role the law might have to play in that process. [source] Below-ground herbivory and root toughness: a potential model system using lignin-modified tobaccoPHYSIOLOGICAL ENTOMOLOGY, Issue 2 2010SCOTT N. JOHNSON Plants exploit an array of defences against insect herbivores based on chemical and biomechanical properties. There is increasing evidence that plant toughness comprises a particularly effective defence against herbivory, yet studies to date have focussed exclusively on leaf toughness and folivore behaviour. The relationship between root mechanical properties and the chewing behaviour of a root-feeding insect, the Agriotes spp. wireworm (Coleoptera: Elateridae L.), feeding on tobacco (Nicoiana tabacum) is investigated. Root toughness is manipulated using introduced transgenes for the down-regulation of key enzymes in the lignin biosynthesis pathway: cinnamoyl-CoA reductase (CCR line) and caffeate O -methyltransferase and cinnamyl alcohol dehydrogenase (CO line). Two biomechanical analyses (i.e. conventional cutting and notched tensile) are conducted to quantify root toughness on both lines. Roots from the CO line are significantly tougher than those of the CCR line in terms of fracture toughness and fracture energy, although not for cutting energy or stiffness. Bioassays that compel wireworms to chew through roots demonstrate that only 30% can penetrate roots of the CO line compared with 90% on the CCR line. It takes wireworms over twice as long to penetrate roots from the CO line (8 h) compared with CCR roots (3.5 h). There is a statistically significant positive relationship between penetration time and fracture toughness evaluated with tensile tests, although not with cutting energy from cutting tests. Using this exploratory model system, it is concluded that root toughness derived from tensile tests is a practical indicator of the ability of root-feeding insects to penetrate roots. [source] Transcriptional profiling reveals elevated CO2 and elevated O3 alter resistance of soybean (Glycine max) to Japanese beetles (Popillia japonica)PLANT CELL & ENVIRONMENT, Issue 4 2008CLARE L. CASTEEL ABSTRACT The accumulation of CO2 and O3 in the troposphere alters phytochemistry which in turn influences the interactions between plants and insects. Using microarray analysis of field-grown soybean (Glycine max), we found that the number of transcripts in the leaves affected by herbivory by Japanese beetles (Popillia japonica) was greater when plants were grown under elevated CO2, elevated O3 and the combination of elevated CO2 plus elevated O3 than when grown in ambient atmosphere. The effect of herbivory on transcription diminished strongly with time (<1% of genes were affected by herbivory after 3 weeks), and elevated CO2 interacted more strongly with herbivory than elevated O3. The majority of transcripts affected by elevated O3 were related to antioxidant metabolism. Constitutive levels and the induction by herbivory of key transcripts associated with defence and hormone signalling were down-regulated under elevated CO2; 1-aminocyclopropane-1-carboxylate (ACC) synthase, lipoxygenase (LOX), allene oxide synthase (AOS), allene oxide cyclase (AOC), chalcone synthase (CHS), polyphenol oxidase (PPO) and cysteine protease inhibitor (CystPI) were lower in abundance compared with levels under ambient conditions. By suppressing the ability to mount an effective defence, elevated CO2 may decrease resistance of soybean to herbivory. [source] Parasitism by Cuscuta pentagona sequentially induces JA and SA defence pathways in tomatoPLANT CELL & ENVIRONMENT, Issue 2 2010JUSTIN B. RUNYON ABSTRACT While plant responses to herbivores and pathogens are well characterized, responses to attack by other plants remain largely unexplored. We measured phytohormones and C18 fatty acids in tomato attacked by the parasitic plant Cuscuta pentagona, and used transgenic and mutant plants to explore the roles of the defence-related phytohormones salicylic acid (SA) and jasmonic acid (JA). Parasite attachment to 10-day-old tomato plants elicited few biochemical changes, but a second attachment 10 d later elicited a 60-fold increase in JA, a 30-fold increase in SA and a hypersensitive-like response (HLR). Host age also influenced the response: neither Cuscuta seedlings nor established vines elicited a HLR in 10-day-old hosts, but both did in 20-day-old hosts. Parasites grew larger on hosts deficient in SA (NahG) or insensitive to JA [jasmonic acid-insensitive1 (jai1) ], suggesting that both phytohormones mediate effective defences. Moreover, amounts of JA peaked 12 h before SA, indicating that defences may be coordinated via sequential induction of these hormones. Parasitism also induced increases in free linolenic and linoleic acids and abscisic acid. These findings provide the first documentation of plant hormonal signalling induced by a parasitic plant and show that tomato responses to C. pentagona display characteristics similar to both herbivore- and pathogen-induced responses. [source] | ||||||||||