Naslov
Interaction of free indole-3-acetic acid and its amino acid conjugates in tomato hypocotyl cultures

Autori
Magnus, Volker ; Hangarter, Roger P. ; Good, Norman E.

Izvornik
Journal of plant growth regulation (0721-7595) 11 (1992), 2; 67-75

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Lycopersicon esculentum ; indole-3-acetic acid ; IAA ; amino acid ; conjugate ; in vitro culture ; morphogenesis ; callus ; organogenesis

Sažetak
The interaction of free indole-3-acetic acid (IAA) and its amino acid conjugates on growth and development of cultured tomato hypocotyl tissue (Lycopersicon esculentum Mill. cv. Marglobe) was studied. In a nutrient medium containing 10 micromol/L of benzyladenine, free IAA stimulated shoot and root development with little callus proliferation. In contrast, all IAA-amino acid conjugates tested supported mostly callus growth. Simultaneous application of free IAA and its conjugates resulted in the expression of mixed morphogenetic responses (i. e., both vigorous callus growth and organogenesis resulted). Growth kinetics and the effect of temporal exposure of the tissues to the bound and the free auxin suggest that some IAA-amino acid conjugates may specifically influence plant morphogenesis in ways that cannot be easily explained by simply a function of their slow hydrolysis to release free IAA.

Izvorni jezik
Engleski

Znanstvena područja
Kemija, Biologija

POVEZANOST RADA