Naslov
Molecular properties of 4-substituted indole-3-acetic acids affecting pea pericarp elongation

Autori
Reinecke, Dennis M. ; Ozga, Jocelyn ; Ilić, Nebojša ; Magnus Volker ; Kojić-Prodić, Biserka

Izvornik
Plant growth regulation (0167-6903) 27 (1999), 1; 39-48

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

Ključne riječi
4-chloroindole-3-acetic acid; Fabaceae; pea pericarp; Pisum sativum; structure-activity relationship; 4-substituted IAA

Sažetak
Pea (Pisum sativum L.) fruit naturally contain the auxins, indole-3-acetic acid (IAA) and 4-chloroindole-3-acetic acid (4-Cl-IAA). However, only 4-Cl-IAA can substitute for the seeds in maintaining pea fruit growth in planta. The importance of the substituent at the 4-position of the indole ring was tested by comparing the molecular properties of 4-X-IAA (X = H, Me, Et, F, or Cl) and their effect on the elongation of pea pericarps in planta. Structure-activity is discussed in terms of structural data derived from X-ray analysis, computed conformations in solution, semiempirical shape and bulk parameters, and experimentally determined lipophilicities and NH-acidities. The size of the 4-substituent, and its lipophilicity, are associated with growth-promoting activity in the pea pericarp, while there was no obvious relationship with electromeric effects

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA