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Identification and expression analysis of the gene lhcSR associated with adaptation to light and low temperature stress in the green tide forming alga Ulva prolifera
Dong, M.; Zhang, X.; Zou, J.; Ye, N.; Xu, D.; Mou, S.; Liang, C.; Wang, W. (2012). Identification and expression analysis of the gene lhcSR associated with adaptation to light and low temperature stress in the green tide forming alga Ulva prolifera. Mar. Biol. Res. 8(8): 746-755. dx.doi.org/10.1080/17451000.2012.676188
In: Marine Biology Research. Taylor & Francis: Oslo; Basingstoke. ISSN 1745-1000, more
Peer reviewed article  

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Keywords
    Algae; Ulva prolifera O.F.Müller, 1778 [WoRMS]; Marine
Author keywords
    Green tide; lhcSR; full-length; Expression analysis

Authors  Top 
  • Dong, M.
  • Zhang, X.
  • Zou, J.
  • Ye, N.
  • Xu, D.
  • Mou, S.
  • Liang, C.
  • Wang, W.

Abstract
    As the dominant species of the green tide-forming algae in the Yellow Sea of China during the past four years, Ulva prolifera was proposed as having evolved a perfect response mechanism to deal with different light and temperature stress. The LHCSR (also known as LI818 in green algae and LHCX in diatoms) protein is a stress-related member of the LHC family found only in algae. The homologues in the green alga Chlamydomonas were up-regulated in response to a variety of stresses and required for energy quenching. In this study, we cloned a putative lhcSR full-length cDNA sequence from U. prolifera and analysed the expression in response to various temperature and illumination gradients. The results showed that expression of lhcSR was up-regulated by light and transiently accumulated in 1 h. Expression of lhcSR could also be induced by low-temperature stress and could sustain the up-regulation for up to 6 days. These data suggest that the lhcSR gene in U. prolifera is involved in the adaption to the light and low-temperature stress in both the short and long term.

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