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Plant Breeding: High-Yield and Quality, Stress-Resistant Trait Genetic Improvement and Application

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: 29 September 2025 | Viewed by 327

Special Issue Editor


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Guest Editor
National Key Laboratory of Cotton Bio-Breeding and Integrated Utilization, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang 455000, China
Interests: plant breeding; biology; biotechnology; molecular genetics; genomics; bioinformatics; environmental stress
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Special Issue Information

Dear Colleagues,

Plant breeding focuses on enhancing crop yield, quality, and resistance to environmental stresses. The primary objectives are to achieve high yields, superior quality, and robust stress resistance. By employing techniques such as cross-breeding, selection, and genome editing, crop varieties with high yields that can thrive in diverse environmental conditions can be developed. In contemporary agriculture, genetic improvement technologies can significantly boost crop performance, enhance economic gains, supply more high-quality agricultural products for human consumption, meet the escalating food demands of a growing population, and promote agricultural sustainability.

Balancing quality, high yield, and stress resistance during the breeding process poses a complex and demanding challenge. Techniques like whole-genome sequencing and marker-assisted selection enable the precise identification and introduction of superior genes, enhancing breeding efficiency and accuracy. Gene mining and analysis have expedited the creation of new varieties and advanced precision breeding. Through ongoing scientific exploration and technological innovation, there is potential for cultivating even better crop varieties, thereby making substantial contributions to the sustainable development of global agriculture.

Dr. Juwu Gong
Guest Editor

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Keywords

  • plant breeding
  • crop genetic improvement
  • gene editing
  • stress resistance
  • crop quality
  • crop yield
  • gene resource utilization

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Published Papers (1 paper)

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Research

21 pages, 8106 KiB  
Article
The PAP Gene Family in Cotton: Impact of Genome-Wide Identification on Fiber Secondary Wall Synthesis
by Cong Sun, Weijie Li, Ruiqiang Qi, Yangming Liu, Xiaoyu Wang, Juwu Gong, Wankui Gong, Jingtao Pan, Yang Li, Yuzhen Shi, Haoliang Yan, Haihong Shang and Youlu Yuan
Int. J. Mol. Sci. 2025, 26(9), 3944; https://doi.org/10.3390/ijms26093944 - 22 Apr 2025
Viewed by 190
Abstract
Cotton is a crucial cash crop widely valued for its fiber. It is an important source of natural fiber and has diverse applications. Improving fiber quality is of significant economic and agricultural importance. Purple acid phosphatases (PAPs) are multifunctional enzymes critical for plant [...] Read more.
Cotton is a crucial cash crop widely valued for its fiber. It is an important source of natural fiber and has diverse applications. Improving fiber quality is of significant economic and agricultural importance. Purple acid phosphatases (PAPs) are multifunctional enzymes critical for plant cell wall biosynthesis, root architecture modulation, low-phosphorus stress adaptation, and salt/ROS stress tolerance. In this study, a comprehensive genome-wide analysis of the PAP gene family was performed for four cotton species (G. hirsutum, G. barbadense, G. raimondii, and G. arboreum) to explore its potential role in improving fiber quality. A total of 193 PAP genes were identified in these species, revealing several conserved domains that contribute to their functional diversity. Phylogenetic analysis showed that the cotton PAP2 genes exhibited high homology with NtPAP12, a cell wall synthesis-related gene. Using cotton varieties with contrasting fiber thickness (EZ60, micronaire 4.5 vs. CCRI127, micronaire 3.5), qRT-PCR analysis demonstrated significantly higher expression levels of GhPAP2.2, GhPAP2.6, GhPAP2.8, and GhPAP2.9 in EZ60 fibers during 20–25 DPA compared to CCRI127. These results highlight the potential influence of PAP genes on cotton fiber development and provide valuable insights for improving fiber quality in cotton breeding. Full article
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