Phospholipase Dδ Mediates the Process of Cold Acclimation in Arabidopsis thaliana

doi:10.11983/CBB29333

Chinese Bulletin of Botany ›› 2010, Vol. 45 ›› Issue (05): 541-547.DOI: 10.11983/CBB29333 cstr: 32102.14.j.issn.1674-3466.2010.05.003

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Phospholipase Dδ Mediates the Process of Cold Acclimation in Arabidopsis thaliana

Tao Wang^1,2, Xurong Mei¹, Xiuli Zhong^1*, Yuzhong Li¹, Zhengbing Zeng¹, Haiyan Wang¹, Lei Sun¹, Xu Xia¹

¹Key Laboratory of Dryland Farming and Water-saving Agriculture, Ministry of Agriculture, Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing 100081, China

²Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming 650106, China

Received:2009-10-23 Revised:2010-01-05 Online:2010-09-01 Published:2010-09-20
Contact: Xiuli Zhong

Abstract

Abstract: We compared cold-acclimated and non-acclimated phospholipase D (PLD)δ-knockout and wild-type Arabidopsis thaliana plants for tolerance to freezing. PLDδ-knockout plants showed lower freezing tolerance than did wild-type plants with cold acclimation; without cold acclimation, the two genotypes did not differ in freezing tolerance. Therefore, the PLDδ gene is involved in the process of cold acclimation. The pathways through which PLDδ acts in the process of cold acclimation were then analyzed. During cold acclimation, PLDδ was not involved in the activation of SOD, CAT, or POD anti-oxidative enzymes; it negatively regulated the accumulation of proline and soluble sugar, and mediated the process of freezing resistance induced by the low temperature signaling molecule ABA.

Key words: cold acclimation, phospholipase Dδ, signaling

Tao Wang, Xurong Mei, Xiuli Zhong, Yuzhong Li, Zhengbing Zeng, Haiyan Wang, Lei Sun, Xu Xia. Phospholipase Dδ Mediates the Process of Cold Acclimation in Arabidopsis thaliana[J]. Chinese Bulletin of Botany, 2010, 45(05): 541-547.

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Phospholipase Dδ Mediates the Process of Cold Acclimation in Arabidopsis thaliana

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