UNIVERSITY OF SARGODHA
DEPARTMENT OF BOTANY
Course Title: Plant Physiology-II
Course Code: Bot-6218
Credit Hours: 3(2+1)
Instructor: Dr. Ameer Khan
Email: [email protected]
DESCRIPTION
Plant Physiology-II
Plants are immobile in nature, they want to fulfill all their requirements of their life without moving from one place to an other place. This course examines life process of plants such as signal transduction, different types of hormones (old group of hormones and newly discovered hormones) their synthesis, mode of action and beneficial effects. It also gives information about mechanism and different forces involve in uptake of water, role of water potential, minerals nutrition, their physiological role and deficiency symptoms in plants. This course also introduces photoperiodism, vernalization and assimilation of nutrients.
Objectives
To introduce the types and importance of plant hormones
To build a understanding about photoperiodism and mechanism of flowering in plants
To examine the physiological importance of minerals nutrition in plants
COURSE MATERIAL
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Course Contents |
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Week-1 |
Plant hormones, Introductions and types of hormone |
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Week-2 |
Bioassay, structure, biosynthesis, receptors, signal trasduction and mode of action, transport, physiological effects |
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Week-3 |
Auxins , Gibberellins (Practicals) To investigate water potential of a plant tissue by dye method and water potential apparatus). |
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Week-4 |
Cytokinins, Abscisic acid, |
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Week-5 |
Ethylene, Polyamines |
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Week-6 |
Brassinosteriods, Jasmonates |
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Week-7 |
Salicylic acid, Jasmonate, Brassinosteroids |
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Week-8 |
Fucicoccin, Turgorin, strigolactone, (Practical, To determine osmotic potential of massive tissue by freezing point depression method or by an osmometer ), Practical, To investigate the preferential absorption of ions by corn seedlings and potato slices. |
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Week-09 |
Water Relations: The soil -plant -atmosphere continuum - an overview. Structure of water. Physico-chemical properties of water, Water in the soil and its potentials. Water in cell components. Absorption of water in plants (pathways and driving forces, Aquaporins,-their structure and types) |
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Week-10 |
Cell water relations terminology. Hofler diagram - analysis of change in turgor, water and osmotic potential with changes in cell volume. Modulus of elasticity coefficient; Hydraulic conductivity. |
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Week-11 |
Osmoregulation, Methods for measurement of water , osmotic and turgor potentials- Pressure chamber, psychrometry, pressure probe, pressure volume curve. Practicals, Determination of K uptake by excised roots |
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Week-12 |
Plant Mineral Nutrition: Inorganic composition of plant and soil. Absorption of mineral nutrients - roots, mycorrhizae. Effect of soil pH on nutrient availability. Ion traffic into root. The nature of membrane carriers, channels and electrogenic pumps .Passive and active (primary and secondary) transports and their energetics. |
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Week-13 |
Essential and beneficial elements-their functions and deficiency symptoms in plants. Fertilizers and their significance in Agriculture. |
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Week-14 |
Phytochromes: Discovery of phytochromes and cryptochromes. Physical and chemical properties of phytochromes. Distribution of phytochromes among species, cells and tissues and their role in biological processes. Phytochromes and gene expression |
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Week-15 |
Control of Flowering: Autonomous versus environmental regulation. Circadien rhythms. Classification of plants according to photoperiodic reaction, photoperiodic induction, locus of photoperiodic reaction and dark periods in photoperiodism. |
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Week-16 |
Role of photoperiodism in flowering. Biochemical signaling involved in flowering. Vernalization and its effect on flowering. Floral meristem and floral organ development. Floral organ identity genes and the ABC model. |
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Week-17 |
Gene Regulation and Signal Transduction Genome size and organization. Gene regulation in prokaryotes and eukaryotes. Signal transduction in prokaryotes and eukaryotes |
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Week-18 |
Genome size and organization. Gene regulation in prokaryotes and eukaryotes. Signal transduction in prokaryotes and eukaryotes |
- Books Related to Plant Physiology-II
- Plant Hormones - Biosynthesis, Signal Transduction, Action!
Edited by Peter J. Davies
Springer 2004 - Plant Physiology
Lincoln Taiz and Eduardo Zeiger
7th Edition
- Advances in Plant Ethylene Research
Edited by Ramina, A.; Chang, C.; Giovannoni, J.; Klee, H.; Perata, P.; Woltering, E.
Springer 2007 - Brassinosteroids - Bioactivity and Crop Productivity
Edited by S Hayat and A Ahmad
Springer 2004 - Chemistry of Natural Products
Bhat, S.V., Nagasampagi, B.A., Sivakumar, M.
Springer 2004
- Handbook of Plant and Crop Physiology (Second Edition)
Edited by Mohammad Pessarakli
Marcel Dekker 2001 - Plant Biochemistry, 3rd Edition
Edited by Hans-Walter Heldt
Academic Press September 2004 - Plant Growth, Hormones, and Development
Edited by Dr. Lalit M. Srivastava
Academic Press 2002 - Plant Hormone Signaling
Edited by Peter Hedden and Stephen Thomas
Blackwell, August 2006
ASSESSMENT CRITERIA
Sessional: 10 (Attendance +Assignment)
Practicals: 15, Mid Term Exam: 30, Final exam: 45.
OUTCOMES
At the end of the course work including practicals, students will reach in the depth of knowledge and main themes of plant physiology at hormonal regulations, water relation of plants, minerals nutrition, photoperiodism and signal transduction
