Genetic Basis for Rice Seed Development and Germination

A special issue of Life (ISSN 2075-1729). This special issue belongs to the section "Plant Science".

Deadline for manuscript submissions: closed (22 June 2022) | Viewed by 5151

Special Issue Editors


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Guest Editor
State Key Laboratory of Rice Biology and Breeding, China National Rice Research Institute, Hangzhou 311400, China
Interests: rice (Oryza sativa L.); quantitative trait locus; seed development; grain weight
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Rice (Oryza sativa L.), a semi-aquatic annual grass plant, has been serving as the staple food for over half of the world’s population, with a long history of over seven thousand years. As a consequence of double fertilization, rice seed comprises a maternal caryopsis coat, a diploid embryo, and a triploid endosperm. The embryo carries the life of the progenies, while endosperm is stuffed with nutrients such as starch, protein, lipids, and other trace substances, which could be utilized for the embryo germination or human consumption. It has been clear that the establishment of rice seeds is orchestrated by both environmental cues and genetic factors. So far, quite a few QTLs or genes controlling rice seed development or germination have been identified. Nevertheless, the genetic basis and regulatory mechanism of rice seed development remain largely unclear.

The aim of this Special Issue of Life is to collect newest fundamental discoveries on the genetic basis and regulatory mechanism of rice seed development underpinning rice grain size, yield, quality, as well as seed germination, dormancy, and vigor. We hope the findings of this Special Issue will help to address the fundamental scientific questions of plant seed development and provide means to improve crop productivity. We welcome all kinds of submissions, including original research papers, reviews, and methods.

Dr. Jian Zhang
Dr. Zhoufei Wang
Prof. Dr. Jiezheng Ying
Guest Editors

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Keywords

  • Rice (Oryza sativa L.)
  • Seed development
  • Embryogenesis
  • Seed germination
  • Seed dormancy
  • Seed vigor
  • Grain quality
  • Grain size
  • Genetic basis
  • Genetic improvement

Published Papers (1 paper)

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Review

20 pages, 1420 KiB  
Review
Understanding of Hormonal Regulation in Rice Seed Germination
by Diankai Gong, Fei He, Jingyan Liu, Cheng Zhang, Yanrong Wang, Shujun Tian, Chi Sun and Xue Zhang
Life 2022, 12(7), 1021; https://doi.org/10.3390/life12071021 - 9 Jul 2022
Cited by 15 | Viewed by 4360
Abstract
Seed germination is a critical stage during the life cycle of plants. It is well known that germination is regulated by a series of internal and external factors, especially plant hormones. In Arabidopsis, many germination-related factors have been identified, while in rice, [...] Read more.
Seed germination is a critical stage during the life cycle of plants. It is well known that germination is regulated by a series of internal and external factors, especially plant hormones. In Arabidopsis, many germination-related factors have been identified, while in rice, the important crop and monocot model species and the further molecular mechanisms and regulatory networks controlling germination still need to be elucidated. Hormonal signals, especially those of abscisic acid (ABA) and gibberellin (GA), play a dominant role in determining whether a seed germinates or not. The balance between the content and sensitivity of these two hormones is the key to the regulation of germination. In this review, we present the foundational knowledge of ABA and GA pathways obtained from germination research in Arabidopsis. Then, we highlight the current advances in the identification of the regulatory genes involved in ABA- or GA-mediated germination in rice. Furthermore, other plant hormones regulate seed germination, most likely by participating in the ABA or GA pathways. Finally, the results from some regulatory layers, including transcription factors, post-transcriptional regulations, and reactive oxygen species, are also discussed. This review aims to summarize our current understanding of the complex molecular networks involving the key roles of plant hormones in regulating the seed germination of rice. Full article
(This article belongs to the Special Issue Genetic Basis for Rice Seed Development and Germination)
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