Effects of Low Temperature Stress on Physiological Index and Protein Phospho-rylation in Brassica oleracea L.

ACTA HORTICULTURAE SINICA ›› 2003, Vol. 30 ›› Issue (5): 530-534.

• 研究论文 • Previous Articles Next Articles

Effects of Low Temperature Stress on Physiological Index and Protein Phospho-rylation in Brassica oleracea L.

Wu Nengbiao^1,2;Wu Junyan¹;Zhu Liquan¹;Wang Xiaojia¹

(¹ Horticulture Department, South-West Agriculture University,Chongqing 400716,China ; ² School of Life Science,South-West Normal University, Chongqing 400715 , China)

Received:2002-12-13 Revised:2003-02-24 Online:2003-10-25 Published:2003-10-25

Abstract

Abstract: The contents of MDA , proline , soluble sugar , ABA , and the activity of PKin Brassica oleracea L. rose remarkably in a short time at 5 ℃, then went down. And the peak of ABA content and the PK activity were prior to other indexes. Low temperature , first of all , caused the activity of PKand the content of endogenesis ABA increase through some signal matter. Then , activated or prohibited some genes expressing , and at last it caused the content of other matter rising remarkably. The activity of PK had an apparently reliance on Ca²⁺Mn²⁺ and Mg²⁺ had obvious effect on the PKactivity , too. The mechanismof the two ions to PK might be different . A kind of phosphoprotein (22.9 kD) caused by low temperature stress was separated

Key words: Brassica oleracea L., Temperature stress, The activity of PK, Ca²⁺

CLC Number:

S 635

Wu Nengbiao;Wu Junyan;Zhu Liquan;Wang Xiaojia. Effects of Low Temperature Stress on Physiological Index and Protein Phospho-rylation in Brassica oleracea L.[J]. ACTA HORTICULTURAE SINICA, 2003, 30(5): 530-534.

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Effects of Low Temperature Stress on Physiological Index and Protein Phospho-rylation in Brassica oleracea L.

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