Differential expression in Arabidopsis of Lhca2, a PSI cab gene

Hong Zhang, Jing Wang, Howard M. Goodman

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A cDNA clone of the gene Lhca2 encoding a photosystem I (PSI) type II chlorophyll a/b-binding protein was isolated from Arabidopsis thaliana. The isolation of this, the fourth PSI cab gene from Arabidopsis, confirms a previous report [1] that indicated Arabidopsis may contain all four PSI cab genes identified in other plant species. Lhca2 is a single-copy gene as are the other known Arabidopsis PSI cab genes. The patterns of developmental expression and tissue-specific regulation of Lhca2 are similar to those of other PSI and PSII cab genes, but the light induction pattern and the steady-state mRNA level of Lhca2 are distinct. This suggests that a different mechanism may be employed to regulate the expression of Lhca2.

Original languageEnglish
Pages (from-to)551-557
Number of pages7
JournalPlant molecular biology
Issue number3
StatePublished - Jun 1994


  • Southern blots
  • chlorophyll
  • light induction
  • northern blots
  • photosystem I


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