Cold‐acclimation induced changes in freezing tolerance and translatable RNA content in Citrus grandis and Poncirus trifoliata

Richard E. Durham, Gloria A. Moore, Dale Haskell, Charles L. Guy

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Cold‐acclimation‐induced changes in freezing tolerance and translatable RNA content were compared in seedlings of a relatively cold sensitive citrus species, Citrus grandis L. Osb. cv. Thong Dee (pummelo), and the cold‐hardy citrus relative, Poncirus trifoliata L. Raf. cv. Pomeroy (trifoliate orange). Cold acclimation of pummelo (10 days at 15°C followed by 4 weeks at 10°/5°C, day/night) resulted in a decrease in LT50 from −6 to −8°C, while in trifoliate orange (acclimated for 7 weeks at 5°C), the LT50 decreased from −9 to −18°C. Qualitative changes in the in vitro translation profile, revealed by two‐dimensional gel electrophoresis, were observed following cold acclimation in both species. An mRNA for a large polypeptide (ca 160 kDa) was detected following cold acclimation of trifoliate orange. A similar change was not observed in pummelo following cold acclimation.

Original languageEnglish
Pages (from-to)519-522
Number of pages4
JournalPhysiologia Plantarum
Volume82
Issue number4
DOIs
StatePublished - Aug 1991

Keywords

  • Citrus
  • Citrus grandis
  • Poncirus trifoliata
  • fruit crop
  • hardiness
  • low temperature
  • stress proteins

ASJC Scopus subject areas

  • Physiology
  • Genetics
  • Plant Science
  • Cell Biology

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