Significant improvement of salt tolerance with 2-day acclimatization treatment in Elaeagnus oxycarpa seedlings

Naoki Murata, Fumiko Iwanaga, Ailijiang Maimaiti, Shogo Imada, Nobuhiro Mori, Kiyoshi Tanaka, Norikazu Yamanaka

研究成果: Contribution to journalArticle査読

9 被引用数 (Scopus)

抄録

To enhance the salt tolerance of Elaeagnus oxycarpa, an orchard tree widely used for revegetation in northwest China, we applied a stress acclimatization treatment to hydroponically grown seedlings for 2 days by adding polyethylene glycol (PEG) to the culture solution. The seedlings were then transferred to culture solution containing 300mM NaCl for 2 weeks to evaluate their salt tolerance. All seedlings pretreated with 20% (w/v) PEG survived until the end of the NaCl treatment, while most seedlings without the acclimatization treatment died. The photosynthetic rate and chlorophyll fluorescence of the un-pretreated seedlings were dramatically decreased by salt stress; however, photosynthesis was maintained and chlorophyll fluorescence was almost unchanged in the seedlings subjected to acclimatization pretreatment with 20% PEG. The acclimatization treatment significantly increased fructose, glucose, and Ca 2+, and slightly increased maltose, K +, Mg 2+, and β-alanine betaine in leaves. We conclude that 2-day stress acclimatization treatment can improve salt tolerance of E. oxycarpa seedlings enough to adapt them to a lethal concentration of NaCl.

本文言語英語
ページ(範囲)170-174
ページ数5
ジャーナルEnvironmental and Experimental Botany
77
DOI
出版ステータス出版済み - 4 2012

All Science Journal Classification (ASJC) codes

  • 生態、進化、行動および分類学
  • 農業および作物学
  • 植物科学

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