Changes in the alkaloid content of developing fruits of tomato (Lycopersicon esculentum Mill.): I. Analyses of cultivars and mutants with different ripening characteristics

Elsadig A. Eltayeb, James G. Roddick

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Normal ripening red-, orange- and yellow-fruited cultivars of tomato showed similar patterns of fruit growth and tomatine accumulation to those of non-ripening mutants. In all fruits, the tomatine concentration declined continuously from an early stage although the absolute amount per fruit showed a biphasic pattern of accumulation and decline. The turning point' occurred at an earlier developmental stage in normal fruits than in mutants. Normal fruits also had a lower initial and higher final tomatine content than mutants on a per fruit basis although, on a unit weight basis, their initial concentration was higher and final concentration lower. Small, prematurely-ripened red fruits had alkaloid levels intermediate between large, unripe, green fruits and large, ripe, red fruits. It is concluded that growth and ripening processes may both contribute to the decline in fruit tomatine.

Original languageEnglish
Pages (from-to)252-260
Number of pages9
JournalJournal of Experimental Botany
Volume35
Issue number2
DOIs
Publication statusPublished - Feb 1984

Fingerprint

Lycopersicon Esculentum
Alkaloids
Tomato
ripening
alkaloid
Fruit
Lycopersicon esculentum
Fruits
Mutant
Solanum lycopersicum var. lycopersicum
cultivar
alkaloids
fruit
tomatoes
Tomatine
mutants
fruits
cultivars
mutant
Ripening

Keywords

  • Fruit ripening
  • Tomatine
  • Tomato

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Plant Science
  • Physiology
  • Statistics, Probability and Uncertainty
  • Ecology
  • Applied Mathematics

Cite this

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abstract = "Normal ripening red-, orange- and yellow-fruited cultivars of tomato showed similar patterns of fruit growth and tomatine accumulation to those of non-ripening mutants. In all fruits, the tomatine concentration declined continuously from an early stage although the absolute amount per fruit showed a biphasic pattern of accumulation and decline. The turning point' occurred at an earlier developmental stage in normal fruits than in mutants. Normal fruits also had a lower initial and higher final tomatine content than mutants on a per fruit basis although, on a unit weight basis, their initial concentration was higher and final concentration lower. Small, prematurely-ripened red fruits had alkaloid levels intermediate between large, unripe, green fruits and large, ripe, red fruits. It is concluded that growth and ripening processes may both contribute to the decline in fruit tomatine.",
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