Molecular Mechanism of Seed Germination under Different Environment Conditions Ⅱ

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Physiology and Metabolism".

Deadline for manuscript submissions: closed (20 June 2023) | Viewed by 1128

Special Issue Editors

Center for Seed Science and Technology, College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Interests: maize seed biology
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Seeds are one of the basic resources for agricultural production, whose germination begins with imbibition and ends with radicle emergence. Successful germination with rapid and uniform seedling establishment is important for crop yield. Numerous studies have shed light on the molecular and physiological basis regulating seed germination in Arabidopsis and other crops. However, the environments in the field are totally different from those in controlled lab conditions, as fields are coupled with multiple abiotic and biotic stresses. Knowledge about the molecular and physiological mechanisms underlying the environmental effects on germination has been lacking. The main purpose of this Special Issue, entitled “Molecular Mechanism of Seed Germination under Different Environmental Conditions”, is to compile the most recent discoveries on seed physiology, genetics, biochemistry, and omics in response to biotic and abiotic stresses, with the aim of promoting research in the field of seed germination. We welcome original research papers, perspectives, opinions, and reviews focused on this domain area.

Dr. Riliang Gu
Dr. Zhoufei Wang
Guest Editors

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Keywords

  • seed germination
  • molecular mechanism
  • environmental stress
  • crops

Published Papers (1 paper)

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Research

20 pages, 5833 KiB  
Article
Transcriptome Analysis Revealed the Potential Molecular Mechanism of Anthocyanidins’ Improved Salt Tolerance in Maize Seedlings
Plants 2023, 12(15), 2793; https://doi.org/10.3390/plants12152793 - 27 Jul 2023
Cited by 1 | Viewed by 893
Abstract
Anthocyanin, a kind of flavonoid, plays a crucial role in plant resistance to abiotic stress. Salt stress is a kind of abiotic stress that can damage the growth and development of plant seedlings. However, limited research has been conducted on the involvement of [...] Read more.
Anthocyanin, a kind of flavonoid, plays a crucial role in plant resistance to abiotic stress. Salt stress is a kind of abiotic stress that can damage the growth and development of plant seedlings. However, limited research has been conducted on the involvement of maize seedlings in salt stress resistance via anthocyanin accumulation, and its potential molecular mechanism is still unclear. Therefore, it is of great significance for the normal growth and development of maize seedlings to explore the potential molecular mechanism of anthocyanin improving salt tolerance of seedlings via transcriptome analysis. In this study, we identified two W22 inbred lines (tolerant line pur–W22 and sensitive line bro–W22) exhibiting differential tolerance to salt stress during seedling growth and development but showing no significant differences in seedling characteristics under non–treatment conditions. In order to identify the specific genes involved in seedlings’ salt stress response, we generated two recombinant inbred lines (RILpur–W22 and RILbro–W22) by crossing pur–W22 and bro–W22, and then performed transcriptome analysis on seedlings grown under both non–treatment and salt treatment conditions. A total of 6100 and 5710 differentially expressed genes (DEGs) were identified in RILpur–W22 and RILbro–W22 seedlings, respectively, under salt–stressed conditions when compared to the non–treated groups. Among these DEGs, 3160 were identified as being present in both RILpur–W22 and RILbro–W22, and these served as commonly stressed EDGs that were mainly enriched in the redox process, the monomer metabolic process, catalytic activity, the plasma membrane, and metabolic process regulation. Furthermore, we detected 1728 specific DEGs in the salt–tolerant RILpur–W22 line that were not detected in the salt–sensitive RILbro–W22 line, of which 887 were upregulated and 841 were downregulated. These DEGs are primarily associated with redox processes, biological regulation, and the plasma membrane. Notably, the anthocyanin synthesis related genes in RILpur–W22 were strongly induced under salt treatment conditions, which was consistented with the salt tolerance phenotype of its seedlings. In summary, the results of the transcriptome analysis not only expanded our understanding of the complex molecular mechanism of anthocyanin in improving the salt tolerance of maize seedlings, but also, the DEGs specifically expressed in the salt–tolerant line (RILpur–W22) provided candidate genes for further genetic analysis. Full article
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