In flowering plants, storage product deposition begins soon after the completion of the histodifferentiation phase.
Besides histological studies, little is known about the physiology of storage product deposition and how storage products influence germination behavior and long term seed storability (Schwallier et al. 2011; Colville et al. 2016).
Sedimentation in caves is often episodic, with episodes of storage and deposition, sometimes redeposition of sediment, which means that biostratinomic, preservational, factors become very significant.
Nonetheless, qualitative changes in anther and pistil development have been shown, and significant qualitative changes occur in storage reserve deposition during seed development.
Storage protein deposition in maturing seeds and mobilization in germinating seeds are highly specialized processes.
This same sequestration of calcium in the form of calcium granules is known to occur throughout nature as part of a general cycle of calcium storage, retrieval, deposition, and disposal (see ref. [3] for a more detailed discussion; see Ryall's comprehensive and insightful review [51] on calcium granules, now known to be found in organisms spanning a wide range of phylogenetic complexities).
However, storage protein deposition and protein body formation in the wheat endosperm presents some important differences when compared with rice.
The LEC genes are also involved in regulation of fatty acid biosynthesis and storage lipid deposition during embryo development.
Gene expression studies have established clear correlations between storage protein deposition or mobilization, cystatin content, and Cys protease activity in seeds or vegetative storage organs of different plants [ 4, 12].
Our findings on the featured metabolic processes and the LEC1 regulatory cascade offer new angles for investigation on the integration of endosperm gene expression with embryo development and storage product deposition in seed development.
