Genetic Mechanisms Related to Maize Seed Development

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

Deadline for manuscript submissions: 31 December 2024 | Viewed by 982

Special Issue Editors

College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Interests: seed development; seedling establishment; seed germination; maize; QTL; lipid biosynthesis; lignin biosyn-thesis
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Guest Editor
College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
Interests: gene regulation; epigenetics; maize kernel development; maize seed development; protein quality; molecular genetics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Maize (Zea mays L.), an important food crop, has rich genetic diversity that contributes to its adaptability and productivity. Understanding the genetic basis of seed development in maize is crucial for enhancing yield and nutritional value. The aim of this Special Issue is to promote joint discussion on the frontiers of research dynamics and find opportunities for collaboration in this field. We encourage you to submit research articles and comprehensive reviews exploring the complex genetic networks and processes that drive the development of maize seeds.

The scope of the research area for this Special Issue mainly includes:

  1. Genetic and biological aspects of maize seed development;
  2. Dehydration physiology of maize seeds during seed production;
  3. Hormone regulation in seed development or seedling development;
  4. Secondary metabolism during maize seed development;
  5. Seed germination and seedling establishment;
  6. Stress response during seed or seedling development.

Dr. Li Li
Dr. Zeyang Ma
Guest Editors

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Keywords

  • seed development
  • seed germination
  • stress
  • seed vigor
  • maize

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Published Papers (1 paper)

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Research

15 pages, 6538 KiB  
Article
Transcriptome Analysis Revealed ZmPTOX1 Is Required for Seedling Development and Stress Tolerance in Maize
by Yixuan Peng, Zhi Liang, Xindong Qing, Motong Wen, Zhipeng Yuan, Quanquan Chen, Xuemei Du, Riliang Gu, Jianhua Wang and Li Li
Plants 2024, 13(17), 2346; https://doi.org/10.3390/plants13172346 - 23 Aug 2024
Viewed by 614
Abstract
Plant seedling morphogenesis is considerably related to photosynthesis, pigment synthesis, and circadian periodicity during seedling development. We identified and cloned a maize zebra or crossbanding leaves mutant wk3735, which produces pale white kernels and was identified and plays a role in the [...] Read more.
Plant seedling morphogenesis is considerably related to photosynthesis, pigment synthesis, and circadian periodicity during seedling development. We identified and cloned a maize zebra or crossbanding leaves mutant wk3735, which produces pale white kernels and was identified and plays a role in the equilibrium of the Redox state the in/out of ETC by active oxygen scavenging. Interestingly, it produces the zebra leaves during the production of the first seven leaves, which is apparently different from the mutation of homologs AtPTOX in Arabidopsis. It is intriguing to investigate how and why yellow crossbands (zebra leaf phenotype) emerge on leaves. As expected, chlorophyll concentration and photosynthetic efficiency both significantly declined in the yellow sector of wk3735 leaves. Meanwhile, we observed the circadian expression pattern of ZmPTOX1, which was further validated by protein interaction assays of the circadian clock protein TIM1 and ZmPTOX1. The transcriptome data of yellow (muW) and green (muG) sectors of knock-out lines and normal leaves of overexpression lines (OE) at the 5th-leaf seedling stage were analyzed. Zebra leaf etiolated sections exhibit a marked defect in the expression of genes involved in the circadian rhythm and rhythmic stress (light and cold stress) responses than green sections. According to the analysis of co-DEGs of muW vs. OE and muG vs. OE, terms linked to cell repair function were upregulated while those linked to environmental adaptability and stress response were downregulated due to the mutation of ZmPTOX1. Further gene expression level analyses of reactive oxygen species (ROS) scavenging enzymes and detection of ROS deposition indicated that ZmPTOX1 played an essential role in plant stress resistance and ROS homeostasis. The pleiotropic roles of ZmPTOX1 in plant ROS homeostasis maintenance, stress response, and circadian rhythm character may collectively explain the phenotype of zebra leaves during wk3735 seedling development. Full article
(This article belongs to the Special Issue Genetic Mechanisms Related to Maize Seed Development)
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