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Tree Plant Genomics: Towards a Future with Evolutionary Significance and Breeding Applications

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Plant Sciences".

Deadline for manuscript submissions: closed (20 October 2024) | Viewed by 1819

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Guest Editor
Research Institute of Subtropical Forestry, Chinese Academy of Forestry, Hangzhou 311400, China
Interests: tree genetics and genomics; genus Camellia; non-coding RNA; genome evolution; plant domestication
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

To sustain the effective ecological and economic functions of tree plants, the current molecular breeding paradigm calls for an enhanced breeding strategy to build resilience in economically and ecologically important trees. In recent years, many high-quality tree plant genomes have been published with advances in sequencing technology. This special issue aims to encourage research in tree plant genomics that is not limited to the phylogeny, the basis of ecological adaptations, and breeding analyses from a genomic perspective. We hope that these lines of research (e.g., gene expression, gene function, comparative genomics, etc.) will be sustained in order to address the new challenges that tree plants are facing in terms of evolution and applications.

Dr. Hengfu Yin
Guest Editor

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Keywords

  • tree plant
  • genomics
  • breeding

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Published Papers (1 paper)

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Research

14 pages, 3224 KiB  
Article
Genome-Wide Analysis of MADS-Box Gene Family Reveals CjSTK as a Key Regulator of Seed Abortion in Camellia japonica
by Yifan Yu, Xian Chu, Xianjin Ma, Zhikang Hu, Minyan Wang, Jiyuan Li and Hengfu Yin
Int. J. Mol. Sci. 2024, 25(11), 5770; https://doi.org/10.3390/ijms25115770 - 25 May 2024
Viewed by 1440
Abstract
The plant MADS-box transcription factor family is a major regulator of plant flower development and reproduction, and the AGAMOUS-LIKE11/SEEDSTICK (AGL11/STK) subfamily plays conserved functions in the seed development of flowering plants. Camellia japonica is a world-famous ornamental flower, and its seed kernels are [...] Read more.
The plant MADS-box transcription factor family is a major regulator of plant flower development and reproduction, and the AGAMOUS-LIKE11/SEEDSTICK (AGL11/STK) subfamily plays conserved functions in the seed development of flowering plants. Camellia japonica is a world-famous ornamental flower, and its seed kernels are rich in highly valuable fatty acids. Seed abortion has been found to be common in C. japonica, but little is known about how it is regulated during seed development. In this study, we performed a genome-wide analysis of the MADS-box gene the in C. japonica genome and identified 126 MADS-box genes. Through gene expression profiling in various tissue types, we revealed the C/D-class MADS-box genes were preferentially expressed in seed-related tissues. We identified the AGL11/STK-like gene, CjSTK, and showed that it contained a typical STK motif and exclusively expressed during seed development. We found a significant increase in the CjSTK expression level in aborted seeds compared with normally developing seeds. Furthermore, overexpression of CjSTK in Arabidopsis thaliana caused shorter pods and smaller seeds. Taken together, we concluded that the fine regulation of the CjSTK expression at different stages of seed development is critical for ovule formation and seed abortion in C. japonica. The present study provides evidence revealing the regulation of seed development in Camellia. Full article
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