Light acclimation of needle pigment composition in Sabina vulgaris seedlings under nurse plant canopy

Y. Ishii, K. Sakamoto, N. Yamanaka, L. Wang, K. Yoshikawa

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

In order to clarify the physiological mechanisms that allow establishment of Sabina vulgaris in different light conditions under a Salix cheilophila canopy in the frost-prone Mu Us Sandy Land of northern China, the photochemical efficiency of photosystem II at predawn (Fv/Fm) and the pigment composition of the needles of S. vulgaris seedlings in various light conditions were examined in late summer and winter. In the summer season, the Fv/Fm values of all seedlings were around 0.80. The ratio of chlorophyll (Chl)-a to Chl-b (Chl-a/Chl-b ratio) increased with growth light conditions. In the winter season, the Fv/Fm decreased considerably depending on growth light conditions. Although the Chl-a/Chl-b ratio remained the same in the summer season, changes in carotenoids such as lutein, the xanthophyll cycle pigments, and β-carotene were detected, particularly under high light conditions. These results suggest that changes in pigment composition against high light and/or low temperature may alleviate photodamage and contribute to establishment of the seedlings in a frost-prone semi-arid land.

Original languageEnglish
Pages (from-to)403-415
Number of pages13
JournalJournal of Arid Environments
Volume67
Issue number3
DOIs
Publication statusPublished - Nov 1 2006

Keywords

  • Carotenoids
  • Low temperature stress
  • Sabina vulgaris
  • Seedling establishment

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Ecology
  • Earth-Surface Processes

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