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Review

The Dead Can Nurture: Novel Insights into the Function of Dead Organs Enclosing Embryos

French Associates Institute for Agriculture and Biotechnology of Drylands, Blaustein Institutes for Desert Research, Ben-Gurion University of the Negev, Midreshet Ben Gurion 84990, Israel
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Int. J. Mol. Sci. 2018, 19(8), 2455; https://doi.org/10.3390/ijms19082455
Received: 23 July 2018 / Revised: 16 August 2018 / Accepted: 16 August 2018 / Published: 19 August 2018
(This article belongs to the Special Issue Seed Development, Dormancy and Germination)
Plants have evolved a variety of dispersal units whereby the embryo is enclosed by various dead protective layers derived from maternal organs of the reproductive system including seed coats (integuments), pericarps (ovary wall, e.g., indehiscent dry fruits) as well as floral bracts (e.g., glumes) in grasses. Commonly, dead organs enclosing embryos (DOEEs) are assumed to provide a physical shield for embryo protection and means for dispersal in the ecosystem. In this review article, we highlight recent studies showing that DOEEs of various species across families also have the capability for long-term storage of various substances including active proteins (hydrolases and ROS detoxifying enzymes), nutrients and metabolites that have the potential to support the embryo during storage in the soil and assist in germination and seedling establishment. We discuss a possible role for DOEEs as natural coatings capable of “engineering” the seed microenvironment for the benefit of the embryo, the seedling and the growing plant. View Full-Text
Keywords: dead organs enclosing embryos (DOEE); long-term storage; seed coats; pericarps; glumes; lemmas; paleas; hydrolases; ROS detoxification; cell wall modification; seed microenvironment; seed longevity; seed germination; seedling vigor dead organs enclosing embryos (DOEE); long-term storage; seed coats; pericarps; glumes; lemmas; paleas; hydrolases; ROS detoxification; cell wall modification; seed microenvironment; seed longevity; seed germination; seedling vigor
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MDPI and ACS Style

Raviv, B.; Godwin, J.; Granot, G.; Grafi, G. The Dead Can Nurture: Novel Insights into the Function of Dead Organs Enclosing Embryos. Int. J. Mol. Sci. 2018, 19, 2455. https://doi.org/10.3390/ijms19082455

AMA Style

Raviv B, Godwin J, Granot G, Grafi G. The Dead Can Nurture: Novel Insights into the Function of Dead Organs Enclosing Embryos. International Journal of Molecular Sciences. 2018; 19(8):2455. https://doi.org/10.3390/ijms19082455

Chicago/Turabian Style

Raviv, Buzi, James Godwin, Gila Granot, and Gideon Grafi. 2018. "The Dead Can Nurture: Novel Insights into the Function of Dead Organs Enclosing Embryos" International Journal of Molecular Sciences 19, no. 8: 2455. https://doi.org/10.3390/ijms19082455

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