Choline induced chill-tolerance in mung bean (Vigna radiata L. Wilcz.)

Michael G. Guye, Laszlo Vigh, John M. Wilson

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Exogenous application of choline reduced chill-sensitivity in seedlings of mung bean (Vigna radiata L. Wilcz.) cv. Berken. In contrast with choline treatment chill-hardening at 12°C, 4.2 g m-3 vapour saturation deficit for 4 days was ineffective in preventing symptoms of chilling injury when subsequently chilled at 5°C for 24 h under light conditions. The choline treatment reduced stomatal aperture prior to chilling and this reduced the development of a chilling-induced water stress in the primary leaves at 5°C. Choline treated plants showed almost complete recovery of leaf water content after chilling, while untreated plants showed a progressive desiccation of the leaf tissue throughout a chill-warm cycle. Choline caused increases in the concentration of chlorophylls, carotenoid and the carotenoid/chlorophyll ratio in non-chilled plants. During chilling photo-oxidative degradation of chlorophyll and carotenoid and the associated decreases in chlorophyll sola b and carotenoid/chlorophyll ratios were prevented by choline application.

Original languageEnglish
Pages (from-to)223-228
Number of pages6
JournalPlant Science
Volume53
Issue number3
DOIs
Publication statusPublished - 1987

Keywords

  • Vigna radiata
  • carotenoid/ chlorophyll
  • chill-hardening
  • chill-sensitivity
  • chlorophyll
  • choline
  • water stress

ASJC Scopus subject areas

  • Genetics
  • Agronomy and Crop Science
  • Plant Science

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