Rose, Ray J; Wang, Xin-Ding; Nolan, Kim E; Rolfe, Barry
Leaf explants of Medicago truncatula were used to investigate the origins of auxin-induced root formation. On the application of auxin there is some callus formation (not the massive amount that occurs in response to auxin plus cytokinin) and roots appear shortly after the first visible callus. Histological examination reveals morphologically distinctive sheets of callus cells that emanate from the veins of the leaf explants and, within this cell type, root primordia are produced as well as...[Show more]
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