Oryza glaberrima not shatter, making the grains easy for humans to gather. A mutation that caused rice not to shatter would probably have been the beginning of domestication. Ibn Baṭṭūṭa recorded rice couscous in the area of present-day Mali in 1350. In the late fifteenth and sixteenth centuries, the Portuguese sailed to the Southern Rivers area in West Africa and wrote that the land was rich in rice. "<nowiki>[T]</nowiki>hey said they found the country covered by vast crops, with many cotton trees and large fields planted in rice … the country looked to them as having the aspect of a pond (i.e.,
Arogenate dehydratase hybrida", "Sorghum bicolor"", "and "Oryza sativa"", "which are all considered higher-order plants. "Erwinia herbicola"" and Pseudomonas aeruginosa"" "are known to" "have homologues for cyclohexadienyl dehydratase. Of the plants with ADT homologues, both "Arabidopsis thaliana "and "Petunia hybrida "are known to have paralogues for the gene (six and three, respectively). Arogenate dehydratase Arogenate dehydratase (ADT) (EC 4.2.1.91) is an enzyme that catalyzes the chemical reaction Hence, this enzyme has one substrate, L-arogenate, but 3 products:L-phenylalanine, HO, and CO. Certain forms of the protein have the potential to catalyze a second reaction, L-prephenate → L-phenylpyruvate + HO + CO This enzyme participates