A single locus confers tolerance to continuous light and allows substantial yield increase in tomato

A.I. Vélez Ramírez, W. van Ieperen, D. Vreugdenhil, P.M.J.A. van Poppel, E. Heuvelink, F.F. Millenaar

Research output: Contribution to journalArticleAcademicpeer-review

44 Citations (Scopus)

Abstract

An important constraint for plant biomass production is the natural day length. Artificial light allows for longer photoperiods, but tomato plants develop a detrimental leaf injury when grown under continuous light—a still poorly understood phenomenon discovered in the 1920s. Here, we report a dominant locus on chromosome 7 of wild tomato species that confers continuous light tolerance. Genetic evidence, RNAseq data, silencing experiments and sequence analysis all point to the type III light harvesting ¿chlorophyll a/b binding protein 13 (¿CAB-13) gene as a major factor responsible for the tolerance. In Arabidopsis thaliana, this protein is thought to have a regulatory role balancing light harvesting by photosystems I and II. Introgressing the tolerance into modern tomato hybrid lines, results in up to 20% yield increase, showing that limitations for crop productivity, caused by the adaptation of plants to the terrestrial 24-h day/night cycle, can be overcome.
Original languageEnglish
Article number4549
JournalNature Communications
Volume5
DOIs
Publication statusPublished - 2014

Keywords

  • differential expression analysis
  • photosystem-ii
  • lycopersicon-esculentum
  • greenhouse tomato
  • dependent phosphorylation
  • chlorophyll fluorescence
  • arabidopsis-thaliana
  • gene-expression
  • air humidity
  • plants

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