alexa Beyond the barrier: communication in the root through the endodermis.


Pharmaceutical Analytical Chemistry: Open Access

Author(s): Robbins NE nd, Trontin C, Duan L, Dinneny JR

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Abstract The root endodermis is characterized by the Casparian strip and by the suberin lamellae, two hydrophobic barriers that restrict the free diffusion of molecules between the inner cell layers of the root and the outer environment. The presence of these barriers and the position of the endodermis between the inner and outer parts of the root require that communication between these two domains acts through the endodermis. Recent work on hormone signaling, propagation of calcium waves, and plant-fungal symbiosis has provided evidence in support of the hypothesis that the endodermis acts as a signaling center. The endodermis is also a unique mechanical barrier to organogenesis, which must be overcome through chemical and mechanical cross talk between cell layers to allow for development of new lateral organs while maintaining its barrier functions. In this review, we discuss recent findings regarding these two important aspects of the endodermis. © 2014 American Society of Plant Biologists. All Rights Reserved.
This article was published in Plant Physiol and referenced in Pharmaceutical Analytical Chemistry: Open Access

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