The initial observation was that the germination of lettuce seeds is stimulated by red light and inhibited by farred light.

TLS Online TPP Program

#Id: 7462

#Unit 5. Developmental Biology

Histidine phosphatase activity of DhkA causes inactivation of RegA, the accumulation of cAMP and PKA activation, causes spore maturation.

TLS Online TPP Program

#Id: 7463

#Unit 5. Developmental Biology

TLS Online TPP Program

#Id: 7464

#Unit 5. Developmental Biology

In prespore cells, PKA activation occurs by signalling cascade that is activated by SDF-3, which triggers the synthesis of GABA

TLS Online TPP Program

#Id: 7465

#Unit 5. Developmental Biology

Secreted GABA then acts on prestalk cells to induce the cell-surface exposure of the serine protease domain of the ABC transporter TagC.

TLS Online TPP Program

#Id: 7466

#Unit 5. Developmental Biology

GABA acts on prespore cells to induce secretion of AcbA.

TLS Online TPP Program

#Id: 7467

#Unit 5. Developmental Biology

AcbA is cleaved by the TagC protease to produce the peptide SDF-2.