AI Article Synopsis
- The megagametophyte in mature seeds has thin-walled cells filled with a central vacuole for protein storage and is rich in amyloplasts, mitochondria, and lipid bodies.
- The study focuses on how these reserves are mobilized during germination, analyzing programmed cell death (PCD) through various markers like DNA degradation and changes in the nuclei.
- Findings suggest that DNA fragmentation occurs early in germination, linked to specific nucleases, providing new insights into the breakdown of the storage tissue and PCD pathways in seeds.
Article Abstract
The megagametophyte of mature seeds of consists of cells with thin walls, one or more nuclei, a central vacuole storing proteins, and a cytoplasm rich in amyloplasts, mitochondria and lipid bodies. In this study, we describe the process of mobilization of reserves and analyzed the dismantling of the tissue during germination, using a range of well-established markers of programmed cell death (PCD), including: morphological changes in nuclei and amyloplasts, DNA degradation, and changes in nuclease profiles. TUNEL reaction and DNA electrophoresis demonstrate that DNA fragmentation in nuclei occurs at early stages of germination, which correlates with induction of specific nucleases. The results of the present study add knowledge on the dismantling of the megagametophyte of genus , a storage tissue that stores starch as the main reserve substance, as well as on the PCD pathway, by revealing new insights into the role of nucleases and the expression patterns of putative nuclease genes during germination.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6125354 | PMC |
| http://dx.doi.org/10.3389/fpls.2018.01275 | DOI Listing |
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