Calcium: The Missing Link in Auxin Action

Plants

Steffen Vanneste¹ 

[1] Plant Systems Biology, VIB, and Plant Biotechnology and Bio-informatics, Ghent University, Ghent 9052, Belgium

关键词: auxin;    calcium;    signal transduction;    auxin transport;   

DOI  :  10.3390/plants2040650

来源: mdpi

【 摘 要 】

Due to their sessile lifestyles, plants need to deal with the limitations and stresses imposed by the changing environment. Plants cope with these by a remarkable developmental flexibility, which is embedded in their strategy to survive. Plants can adjust their size, shape and number of organs, bend according to gravity and light, and regenerate tissues that were damaged, utilizing a coordinating, intercellular signal, the plant hormone, auxin. Another versatile signal is the cation, Ca²⁺, which is a crucial second messenger for many rapid cellular processes during responses to a wide range of endogenous and environmental signals, such as hormones, light, drought stress and others. Auxin is a good candidate for one of these Ca²⁺-activating signals. However, the role of auxin-induced Ca²⁺ signaling is poorly understood. Here, we will provide an overview of possible developmental and physiological roles, as well as mechanisms underlying the interconnection of Ca²⁺ and auxin signaling.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.