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61.
Sunil Kumar Theboral Jeevaraj Mohd H. Yunus Subhra Chakraborty Niranjan Chakraborty 《Plant, cell & environment》2023,46(1):5-22
Stress resilience behaviours in plants are defensive mechanisms that develop under adverse environmental conditions to promote growth, development and yield. Over the past decades, improving stress resilience, especially in crop species, has been a focus of intense research for global food security and economic growth. Plants have evolved specific mechanisms to sense external stress and transmit information to the cell interior and generate appropriate responses. Plant cytoskeleton, comprising microtubules and actin filaments, takes a center stage in stress-induced signalling pathways, either as a direct target or as a signal transducer. In the past few years, it has become apparent that the function of the plant cytoskeleton and other associated proteins are not merely limited to elementary processes of cell growth and proliferation, but they also function in stress response and resilience. This review summarizes recent advances in the role of plant cytoskeleton and associated proteins in abiotic stress management. We provide a thorough overview of the mechanisms that plant cells employ to withstand different abiotic stimuli such as hypersalinity, dehydration, high temperature and cold, among others. We also discuss the crucial role of the plant cytoskeleton in organellar positioning under the influence of high light intensity. 相似文献
62.
A new imprinting material, “Ther-mocool”, has been used for preparing negative replicas of plant as well as metal surfaces for SEM study. The technique has wide application and gives very good results. 相似文献
63.
Genetic variability and advance under four selection procedures in wheat pedigree breeding programme
R. B. Srivastava R. S. Paroda S. C. Sharma Md. Yunus 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1989,77(4):516-520
Summary Four methods of generation advance (SPS, SSD, BP and MMS) were compared in F3 and F4 generations. In the F3 generation, the SPS and SSD methods of generation advance proved superior to the BP and MMS methods for grain yield per plant and for at least one of the yield component traits. The F3 SSD population did not differ significantly from the F3 SPS for any of the traits. However, the F3 SSD population retained more range and cv for different traits than with other methods of generation advance. F4 progenies derived from F3 SSD population were significantly superior for grain yield than lines derived from the other three F3 populations. The MMS method of generation advance proved useful for increasing the 1,000-grain weight for which initial selection was made.Part of Ph.D. Thesis submitted by senior author to Haryana Agricultural University, Hisar 相似文献
64.
M. Yunus R. S. Paroda 《TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik》1982,62(4):337-343
Summary Phenotypic and genotypic correlation coefficients and path-coefficients were studied in the biparental (BIPs) and F3 self progenies of the two wheat crosses. A comparison of correlation coefficients in the BIPs and the F3's revealed that as many as twelve new significant correlations were noticed in case of the BIPs in cross I although some of them occurred in the undesirable direction. On the other hand, only three new correlations were observed in the BIPs of cross II, although as many as fifteen correlations were not significant. Results suggested that intermating in the F2 was effective in breaking the linkages. Path-coefficient analysis further revealed that the direct effect of tillers/ plant on grain yield was important and remained unchanged in both populations of cross I. In cross II, the direct effect of tillers/plants on grain yield was also high and it increased in the BIPs. Intermating seemed to have influenced considerably both the direct and indirect effects. 相似文献
65.
66.
A recombinant Newcastle disease virus (NDV) expressing VP2 protein of infectious bursal disease virus (IBDV) protects against NDV and IBDV 总被引:18,自引:0,他引:18
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Infectious bursal disease virus (IBDV) causes a highly immunosuppressive disease in chickens. Currently available, live IBDV vaccines can lead to generation of variant viruses. We have developed an alternative vaccine that will not create variant IBDV. By using the reverse genetics approach, we devised a recombinant Newcastle disease virus (NDV) vector from a commonly used vaccine strain LaSota to express the host-protective immunogen VP2 of a variant IBDV strain GLS-5. The gene encoding the VP2 protein of the IBDV was inserted into the most 3'-proximal locus of a full-length NDV cDNA for high-level expression. We successfully recovered the recombinant virus, rLaSota/VP2. The rLaSota/VP2 was genetically stable, at least up to 12 serial passages in chicken embryos, and was shown to express the VP2 protein. The VP2 protein was not incorporated into the virions of recombinant virus. Recombinant rLaSota/VP2 replicated to a titer similar to that of parental NDV strain LaSota in chicken embryos and cell cultures. To assess protective efficacy of the rLaSota/VP2, 2-day-old specific-pathogen-free chickens were vaccinated with the recombinant virus and challenged with a highly virulent NDV strain Texas GB or IBDV variant strain GLS-5 at 3 weeks postvaccination. Vaccination with rLaSota/VP2 generated antibody responses against both NDV and IBDV and provided 90% protection against NDV and IBDV. Booster immunization induced higher levels of antibody responses against both NDV and IBDV and conferred complete protection against both viruses. These results indicate that the recombinant NDV can be used as a vaccine vector for other avian pathogens. 相似文献
67.
Maitham A. Khajah Maryam M. Fateel Kethireddy V. Ananthalakshmi Yunus A. Luqmani 《PloS one》2016,11(3)
Background
There is evidence to support a role for angiotensin (Ang) 1–7 in reducing the activity of inflammatory signaling molecules such as MAPK, PKC and SRC. Enhanced angiotensin converting enzyme 2 (ACE2) expression has been observed in patients with inflammatory bowel disease (IBD) suggesting a role in its pathogenesis, prompting this study.Methods
The colonic expression/activity profile of ACE2, Ang 1–7, MAS1-receptor (MAS1-R), MAPK family and Akt were determined by western blot and immunofluorescence. The effect of either exogenous administration of Ang 1–7 or pharmacological inhibition of its function (by A779 treatment) was determined using the mouse dextran sulfate sodium model.Results
Enhanced colonic expression of ACE2, Ang1-7 and MAS1-R was observed post-colitis induction. Daily Ang 1–7 treatment (0.01–0.06 mg/kg) resulted in significant amelioration of DSS-induced colitis. In contrast, daily administration of A779 significantly worsened features of colitis. Colitis-associated phosphorylation of p38, ERK1/2 and Akt was reduced by Ang 1–7 treatment.Conclusion
Our results indicate important anti-inflammatory actions of Ang 1–7 in the pathogenesis of IBD, which may provide a future therapeutic strategy to control the disease progression. 相似文献68.
69.
Reflections on the Principle of Non-Cut Off: A Growing Concept in Maritime Boundary Delimitation Law
Yunus Emre Acikgonul 《Ocean Development & International Law》2016,47(1):52-71
The application of the principle of non-cut off is a significant tool in maritime delimitation to provide an equitable solution. Unfortunately, scholars and experts have paid scant attention to this principle of maritime delimitation. This article analyzes the growing role of the principle of non-cut off in the law of maritime boundary delimitation and examines the related jurisprudence on the issue. 相似文献
70.
Psychosocial stress has been long known to have deleterious effects on health. Nevertheless, an exposure to moderate stressors enhances resilience and promotes health benefits. Male and female organisms differ in many aspects of health and disease. The aim of this study was to investigate antioxidant activity and oxidative damage in saliva in a psychosocial stress paradigm in men and women. Here, we show that an acute stressor of moderate strength augments antioxidant activity and decreases oxidative damage in whole saliva of young people. An examination stress caused a significant increase of catalase activity, accompanied by a decrease of levels of oxidized proteins. Levels of thiobarbituric acid-reacting substances did not increase at stress, indicating that lipid peroxidation was not activated. The stress-induced alterations were more manifested in young women compared to young men. Thus, antioxidant protective mechanisms are more activated by a moderate stressor in young women than in young men. 相似文献