In one pathway, sperm that have undergone the acrosome reaction bind directly to ZP2

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#Unit 6. System Physiology – Plant

The elevated calcium levels in the cytosol then activate CDPKs that phosphorylate and activate RBOH proteins which generate more ROS.

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#Unit 6. System Physiology – Plant

Function of light

a) Development

b) Photosynthesis

c) Stomata opening

d) Flowering

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#Unit 6. System Physiology – Plant

Light wavelengths detected by plant light receptors.

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#Unit 6. System Physiology – Plant

Phytochrome Can Interconvert between Pr and Pfr Forms

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#Unit 6. System Physiology – Plant

Effects of red light (650–680 nm) on morphogenesis could be reversed by a subsequent irradiation with light of longer wavelengths (710–740 nm), called far-red light. This phenomenon was first demonstrated in germinating seeds.

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#Unit 6. System Physiology – Plant

In dark-grown or etiolated plants, phytochrome is present in a red light–absorbing form, referred to as Pr because it is synthesized in this form.