Naslov
Increasing of serotonin content in seeds of Juglans cinerea L. and Juglans nigra L. during ripening

Autori
Vidaković, Željka ; Regula, Ivan ; Jelenčić, Biserka

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
1st Slovenian Symposium on Plant Physiology with International Participation - Abstracts / - Ljubljana, 1993, P4-P4

Skup
1st Slovenian Symposium on Plant Physiology with International Participation

Mjesto i datum
Gozd Martuljek, Slovenija, 29.09.1993. - 01.10.1993

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
serotonin; 5-hidroksitriptamine; Juglans nigra; Juglans cinerea

Sažetak
Serotonin (5-hydroxytriptamine) as a secondary plant product may have different functions in plant tissue. The accumulation of serotonin in seeds of walnuts (Juglans cinerea and Juglans nigra) is connected with the loss of moisture and vacuoles which are replaced with proteins bodies in the cells during the ripening period. To prevent the concentration of ammonia from rising to toxic levels, the seeds of walnuts reduce their ammonia content by synthesizing serotonin. Methanolic extracts of cotyledons in four maturity stages was examined. Serotonin from extracts was separated on ion exchanger Amberlite CG-50 and detected by chromatographic, spectrophotometric and spectrofluoriometric methods. Increasing level of serotonin during ripening was established in both species of walnuts. Serotonin was also in situ localized in cotyledons of walnuts using two histochemical reagents: p-dimethylaminobenzaldehide in chloric acid and ninhydrin in acetic acid.

Izvorni jezik
Engleski

Znanstvena područja
Biologija

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