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Titolo:
Endogenous jasmonic acid and radial cell expansion in buds of potato tubers
Autore:
Castro, G; Kraus, T; Abdala, G;
Indirizzi:
Univ Nacl Rio Cuarto, Fac Ciencias Exactas, Dept Ciencias Nat, RA-5800 RioCuarto, Argentina Univ Nacl Rio Cuarto Rio Cuarto Argentina RA-5800 0 RioCuarto, Argentina Univ Nacl Rio Cuarto, Fac Agron & Vet, RA-5800 Rio Cuarto, Argentina Univ Nacl Rio Cuarto Rio Cuarto Argentina RA-5800 Rio Cuarto, Argentina
Titolo Testata:
JOURNAL OF PLANT PHYSIOLOGY
fascicolo: 6, volume: 155, anno: 1999,
pagine: 706 - 710
SICI:
0176-1617(199912)155:6<706:EJAARC>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
GROWTH-SUBSTANCES; CORTICAL MICROTUBULES; PLANT-GROWTH; TUBERIZATION; BIOSYNTHESIS; BIOCHEMISTRY; SENSITIVITY;
Keywords:
potato buds; jasmonic acid; cell expansion;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Abdala, G Univ Nacl Rio Cuarto, Fac Ciencias Exactas, Dept Ciencias Nat, RA-5800 RioCuarto, Argentina Univ Nacl Rio Cuarto Rio Cuarto Argentina RA-5800 o, Argentina
Citazione:
G. Castro et al., "Endogenous jasmonic acid and radial cell expansion in buds of potato tubers", J PLANT PHY, 155(6), 1999, pp. 706-710

Abstract

The finding of the expansion-inducing activity of jasmonic acid and methyljasmonic acid in medullary tissue of potato tuber, in addition to the occurrence of jasmonic acid in tuber buds and periderms, led us to investigate the possibility of a similar activity during the tuber buds growth. The aimof the present work was to measure the endogenous level of jasmonic acid in buds excised from tubers during two development stages (unsprouted buds and sprouts of 1 cm length) and to study the effect of exogenous jasmonic acid on fundamental meristem cell expansion of tuber excised buds (Solanum tuberosum L. cv. Spunta). Jasmonic acid endogenous level in tubers with unsprouted buds was 325 ng g(-1) dry weight, diminishing during sprouting to 164ng. In excised buds exposed to different concentrations of jasmonic acid the corpus cells responded to all treatments increasing radial cell expansion; the highest mean value (178.03 mu m) was obtained with jasmonic acid 3 x10(-8) mel L-1. The high levels of jasmonic acid found in potato tuber buds in correlation with the capacity of this compound to induce radial expansion of the meristematic cells in the buds indicate the participation of jasmonic acid in the growth of these organs during the process of bud transformation into sprouts.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 09/04/20 alle ore 12:46:29