The higher expression and distribution of 9-cis-epoxycarotenoid dioxygenase1 (AhNCED1) from Arachis hyopgaea L. contribute to tolerance to water stress in a drought-tolerant cultivar

• Autorzy: Hu B , Hong L. , Liu X. , Xiao S. , Lv Y. , Li L.
• Języki publikacji: EN

Abstrakty

EN

The 9-cis-epoxycarotenoid dioxygenase (NCED) is thought to be the rate-limiting enzyme in the abscisic acid (ABA) biosynthetic pathway. In this study, transient expression of AhNCED1 and ABA distribution were detected in the vascular cambium of a drought-tolerant peanut cultivar (Yueyou 7) under a water stress treatment. It caused increases in ABA content in this region. The synthesis of ABA and AhNCED1 in the leaves of Yueyou 7 took place more quickly than in the control cultivar (Shanyou 523). Furthermore, AhNCED1 mRNA and proteins were induced in Yueyou 7 than in Shanyou 523, coinciding with greater ABA accumulation. During the seedling, blooming, and fruiting stages, AhNCED1 protein expression was higher in Yueyou 7 than in Shanyou 523, and it was induced more quickly when the plants were under water stress. These data suggest that the drought-tolerant cultivar can synthesize and distribute ABA more rapidly than does the control cultivar because of a high level of AhNCED1 expression, which then modulates physiological responses under water stress conditions.

• Wydawca: -
• Czasopismo: Acta Physiologiae Plantarum
• Rocznik: 2013
• Tom: 35
• Numer: 05
• Opis fizyczny: p.1667-1674,fig.,ref.

Twórcy

autor

Hu B

• Guangdong Provincial Key Lab of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, People’s Republic of China

autor

Hong L.

• Guangdong Provincial Key Lab of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, People’s Republic of China

autor

Liu X.

• Guangdong Provincial Key Lab of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, People’s Republic of China

autor

Xiao S.

• Guangdong Provincial Key Lab of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, People’s Republic of China

autor

Lv Y.

• Guangdong Provincial Key Lab of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, People’s Republic of China

autor

Li L.

• Guangdong Provincial Key Lab of Biotechnology for Plant Development, College of Life Sciences, South China Normal University, Guangzhou 510631, People’s Republic of China

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