ArticlePlanta2020
Extreme drought alters progeny dispersal unit properties of winter wild oat (Avena sterilis L.).
Article in Planta, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 12 citations in OpenAlex.
- Detailed analysis of agro-industrial byproducts/wastes to enable efficient sorting for various agro-industrial applications.Bioresources and bioprocessing · 2024Article
- Comprehensive analysis of silicon impact on defense and metabolic responses in rice exposed to herbivory stress.Frontiers in plant science · 2024Article
- FLOURY ENDOSPERM 6 mutations enhance the sugary phenotype caused by the loss of ISOAMYLASE1 in barley.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2023Article
- What Worth the Garlic Peel.International journal of molecular sciences · 2022Article
- Single and Combined Salinity and Heat Stresses Impact Yield and Dead Pericarp Priming Activity.Plants (Basel, Switzerland) · 2021Article
- Differential Response to Single and Combined Salt and Heat Stresses: Impact on Accumulation of Proteins and Metabolites in Dead Pericarps ofInternational journal of molecular sciences · 2021Article
- Dead but Not Dead End: Multifunctional Role of Dead Organs Enclosing Embryos in Seed Biology.International journal of molecular sciences · 2020Review
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Authors and funding
11 authors at 3 institutions in 2 countries.
Funding
Abstract
MAIN
conclusionThe dead husk is a vital component of the dispersal unit whose biochemical properties can be modified following exposure to drought. This might affect seed performance and fate, soil properties and consequently plant biodiversity. We investigated the effects of extreme drought on the dispersal unit (DU) properties of winter wild oat (Avena sterilis L.) in the Mediterranean ecosystems focusing on a commonly ignored component of the DU, namely the dead floral bracts (husk). DUs were collected from a climate change experimental research station in the Judean Hills, Israel, simulating extreme drought and from two additional sites differing in the rainfall amounts. Our results showed that drought conditions significantly affected A. sterilis reproductive traits displaying reduced DUs and caryopses weights. The husk contributes profoundly to seed performance showing that germination from the intact DUs or the intact florets 1 was higher, faster and more homogenous compared to naked caryopses; no effect of drought on germination properties was observed. The husk stored hundreds of proteins that retain enzymatic activity and multiple metabolites including phytohormones. Changes in rainfall amounts affected the composition and levels of proteins and other metabolites accumulated in the husk, with a notable effect on abscisic acid (ABA). The husk of both control and drought plants released upon hydration substances that selectively inhibited other species seed germination as well as substances that promoted microbial growth. Our data showed that the dead husk represents a functional component of the DU that have been evolved to nurture the embryo and to ensure its success in its unique habitat. Furthermore, drought conditions can modify husk biochemical properties, which in turn might affect seed performance and fate, soil microbiota and soil fertility and consequently plant species diversity.
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