SAFS 421 Lecture Notes - Lecture 2: Etiolation, Net Income, C3 Carbon Fixation
9 Dec 2017
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When temp goes down below the dew point. Radiative freeze (radiation freezes are characterized by clear skies and dry air. Often the day is warm and pleasant when the sun is out. During the day, the ground absorbs heat from the sun and gets warmer. At night, the ground radiates this heat back to the sky) You could prepare for this, energy is released as water is freezing. Example occurs for the blueberry b/c water freezing is exothermic. Advective freeze (high winds, sub freezing temp, low pressure) This irrigation method could negatively affect the plants because water could possibly evaporate b/c that is a cooling process. Light driven reaction occur in chloroplast, in the thylakoid membrane. Where concentration gradients are established to power pumps (atp synthase) Main products: atp and nadph and o2. Energy from atp and nadph are used to power the calvin cycle. Occurs in the stroma (liquid in the chloroplasts).
