Cytokinin biosynthesis, catalyzed by isopentenyl transferase (IPT), is the addition of the isopentenyl side chain from DMAPP (dimethylallyl diphosphate) to an adenosine moiety (ATP or ADP). iPRTP or iPRDP is converted to ZTP or ZDP respectively by cytochrome P450 monooxygenase (CYP735A) and eventually is converted to zeatin.

TLS Online TPP Program

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#Unit 10. Ecological Principles

TLS Online TPP Program

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#Unit 10. Ecological Principles

Facilitation may be important in early seral stages and inhibition important in later ones or vice versa.

TLS Online TPP Program

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#Unit 10. Ecological Principles

Morphological differences and the probability of invasion success

TLS Online TPP Program

#Id: 5841

#Unit 10. Ecological Principles

Plant species richness with field age

TLS Online TPP Program

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#Unit 10. Ecological Principles

Characteristics of early and late seral stages

TLS Online TPP Program

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#Unit 10. Ecological Principles

Character                     early-stage     late stage 

Root to shoot ratio                    high               low

Number of seed                          many             few

Seed size                                      small             large

Biotic potential                           high              low

Productivity per biomass           high              low

NPP                                              high              low

P/R ratio                                       >1                =1

Nutrient cycling                          open             closed

Importance of detrivores           less                more

Stratification                               No                Yes 

Regeneration ability                   more             less

Resistance ability                        less               more