Nieuwkoop center 

Dorsalmost vegetal cells of the blastula, which are capable of inducing the organizer dorsal vegetal cells can induce animal cells to become dorsal mesodermal tissue)

TLS Online TPP Program

#Id: 9738

#Unit 6. System Physiology – Plant

Members of the Poaceae family use benzoxazinoids an alkaloids derived from tryptophan as constitutively produced defensive secondary metabolites. 

TLS Online TPP Program

#Id: 9739

#Unit 6. System Physiology – Plant

Benzoxazinoids, especially 2,4-dihydroxy-1,4-benzoxazin-3-one (DIBOA) and its derivative 2,4-dihydroxy-7-methoxy-1,4-benzoxazin- 3-one (DIMBOA), are usually stored in the vacuole as glycosides coupled to d-glucose.

TLS Online TPP Program

#Id: 9740

#Unit 6. System Physiology – Plant

Cyanogenic glycosides represent a particularly toxic class of N-containing secondary metabolites. 

Upon tissue damage, these glycosides break down and release hydrogen cyanide (HCN). 

TLS Online TPP Program

#Id: 9741

#Unit 6. System Physiology – Plant

Cyanide inhibits cytochrome c oxidase in the mitochondria, which blocks the electron transport chain.

TLS Online TPP Program

#Id: 9742

#Unit 6. System Physiology – Plant

Amygdalin (the common cyanogenic glycoside found in the seeds of almonds, apricots, cherries, and peaches). 

Dhurrin from sorghum 

Linamarin and lotaustralin from cassava.

TLS Online TPP Program

#Id: 9743

#Unit 6. System Physiology – Plant

Glycosylated triterpenoid compound avenacin A1, found in oat (Avena sativa) roots The wheat root pathogen Gaeumannomyces graminis var. tritici is extremely sensitive to avenacins