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Module BSX-3154:
Attack and Defence in Plants

Attack & Defense in Plants 2024-25
BSX-3154
2024-25
School of Environmental & Natural Sciences
Module - Semester 2
20 credits
Module Organiser: Anil Shirsat
Overview

The strategies that plants employ to respond to biotic and abiotic stresses are currently the subject of intensive research, much of it at the molecular level. This module examines how higher plants cope with external challenges such as pathogen and pest attack by initiating specific gene expression programmes that act to minimise and overcome the effects of the stress. Topics covered include changes in cell wall protein composition in response to wounding and mechanical stress; the synthesis of phytoalexins; the role jasmonate, systemin, and salicylic acid play in localised and systemic responses; the induction of the systemic acquired resistance response and the use of transgenics to unravel the function of extensin cell wall proteins within the plant. The course will be illustrated with examples of ongoing research that is currently in progress within SBS.

Topics covered include changes in cell wall protein composition in response to wounding and mechanical stress; the synthesis of phytoalexins; the role jasmonate, systemin, and salicylic acid play in localised and systemic responses; the induction of the systemic acquired resistance response and the use of transgenics to unravel the function of extensin cell wall proteins within the plant. The course will be illustrated with examples of ongoing research that is currently in progress within SNS.

Assessment Strategy

Threshold -A threshold mark equates to basic understanding of the lecture material and knowledge of at least parts of the underlying experimental evidence.

Good -To gain a good mark of 60% or above the student must additionally be able to provide a wide range of appropriate examples when responding to unseen questions.

Excellent -To gain a mark of 70% or above, the student must show a comprehensive understanding of the lecture material, the answer should be well organised and to the point, and examples from additional reading (not part of the course) should be provided. This answer should give the impression of the student being an authority on the subject.

Learning Outcomes

  • Appreciate that plant defence responses are varied and complex and differentiated in timing.

  • Appreciate that the complexity of plant defence responses is a consequence of variations of gene expression.

  • Demonstrate an integrated understanding of the response of the plant to pathogen and pest attack.

  • Demonstrate knowledge of the major pathways involved in plant defence and how they can be studied at the molecular level.

  • Research the most recent topics in plant defense and prepare a course work essay based on the chosen topic.

Assessment method

Exam (Centrally Scheduled)

Assessment type

Summative

Description

Exam

Weighting

60%

Assessment method

Essay

Assessment type

Summative

Description

A course work essay ( 1600 words) chosen from a set of topics selected by the module organiser.

Weighting

40%

Due date

24/03/2023

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