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Autor:
Roger S. Pearce
Publikováno v:
Bioscience Education. 13:1-21
The article describes a compulsory bioethics module delivered to ~120 biology students in their final year. The main intended learning outcome is that students should be able to analyse and reason about bioethical issues. Interactive lectures explain
Autor:
Roger S. Pearce
Publikováno v:
Bioscience Education. 12:1-5
Developing critical thinking is a perceived weakness in current education. Analysis and reasoning are core skills in bioethics making bioethics a useful vehicle to address this weakness. Assessment is widely considered to be the most influential fact
Autor:
Edward N. Ashworth, Roger S. Pearce
Publikováno v:
Planta. 214:798-805
Low-temperature scanning-electron microscopy was used to study the freezing of leaves of five species that have no resistance to freezing: bean (Phaseolus vulgaris L.), tobacco (Nicotiana tabacum L.), tomato (Lycopersicon esculentum L.), cucumber (Cu
Autor:
Roger S. Pearce
Publikováno v:
Annals of Botany. 87:417-424
Imaging methods are giving new insights into plant freezing and the consequent damage that affects survival and distribution of both wild and crop plants. Ice can enter plants through stomata and hydathodes. Intrinsic nucleation of freezing can also
Autor:
Michael P. Fuller, Roger S. Pearce
Publikováno v:
Plant Physiology. 125:227-240
Freezing of barley (Hordeum vulgare), Hordeum murinum, and Holcus lanatus was studied using infrared video thermography. In the field, ice could enter H. lanatus leaves through hydathodes. In laboratory tests with barley, initially 0.4% of the leaf w
Publikováno v:
Plant, Cell & Environment. 23:561-571
Agropyron desertorum and Lophopyrum elongatum were grown in a control environment or acclimated in high-salt (daily exposure to 75 or 150 mM NaCI for 6 d), cold (6/2 °C for 14 d) or drought environments (watering withheld for 6 d). Lophopyrum elonga
Autor:
Roger S. Pearce
Publikováno v:
Plant Growth Regulation. 29:47-76
Temperature is expected to affect all plant processes. Consistent with this, expression of a large number of specific mRNAs and proteins is up-regulated during cold-acclimation. Their possible functions are outlined, encompassing a wide range of proc
Autor:
Roger S. Pearce, Kathryn M. Atherton, Jane E. Rixon, Paul Harrison, Monica A. Hughes, Claire E. Houlston, M. Alison Dunn
Publikováno v:
Plant Physiology. 117:787-795
Tissues expressing mRNAs of three cold-induced genes, blt101, blt14, andblt4.9, and a control gene, elongation factor 1α, were identified in the crown and immature leaves of cultivated barley (Hordeum vulgare L. cv Igri). Hardiness and tissue damage
Autor:
Roger S. Pearce
Publikováno v:
Bioscience Education. 6:1-3
Publikováno v:
Plant, Cell and Environment. 19:275-290
The purpose of this work was to examine environmental control of expression, at the mRNA level, of cold-inducible genes and to test the relationship of the expression of the genes to cold acclimation. Barley plants (Hordeum vulgare L. cv. Igri) at th