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2014 | 36 | 08 |
Tytuł artykułu

Responses of Pigmentation and delta13C in Qilian juniper to cold and drought stresses under natural conditions in the Qilian Mountains, China

Autorzy
Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The seasonal changes of pigments and stable carbon isotope composition (δ¹³C values) were investigated in needles of Qilian juniper (Sabina przewalskii Kom.) from two typical sites, one drier and the other wetter, in the Qilian Mountains, China. The anthocyanins and rhodoxanthin content from both sites were much higher in winter than in summer. Plant needles contained more carotenoids and xanthophylls in winter at the wetter site, while no seasonal difference appeared at the drier site. However, lower chlorophyll content and higher proline and δ¹³C were observed at the drier site. Average tree height was shorter at the drier site trees than at the wetter site. Our results suggested that under natural conditions, pigmentation in S. przewalskii may serve to improve the energy balance of the photosynthetic apparatus under cold and drought stresses. Proline and δ¹³C could be used as drought indicators for S. przewalskii.
Słowa kluczowe
Wydawca
-
Rocznik
Tom
36
Numer
08
Opis fizyczny
p.2211-2218,fig.,ref.
Twórcy
autor
  • College of Life Sciences, Leshan Normal University, 614004 Leshan, Sichuan, China
  • State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, 730000 Lanzhou, Gansu, China
autor
  • State Key Laboratory of Cryospheric Sciences, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, 730000 Lanzhou, Gansu, China
Bibliografia
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Typ dokumentu
Bibliografia
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Identyfikator YADDA
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