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Identification of the LcGAMYB Gene Family in Litchi chinensis and Development of Molecular Markers Associated with Dwarfing
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Shuying FU1, Mingchao YANG1, Ding CHEN1, Yukun HE1, Haida DENG1, Zhe CHEN1, 2, Tingting YAN1, Xianghe WANG1, 2, Fuchu HU1, 2
Chinese Journal of Tropical Crops | 2026, 47(3) : 588 - 602
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Chinese Journal of Tropical Crops | 2026, 47(3): 588-602
• Omics & Biotechnology •
Identification of the LcGAMYB Gene Family in Litchi chinensis and Development of Molecular Markers Associated with Dwarfing
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Shuying FU1, Mingchao YANG1, Ding CHEN1, Yukun HE1, Haida DENG1, Zhe CHEN1, 2, Tingting YAN1, Xianghe WANG1, 2, Fuchu HU1, 2
Affiliations
  • 1.Institute of Tropical Fruit Trees, Hainan Academy of Agricultural Sciences/Key Laboratory of Tropical Horticultural Genetic Resources Evaluation and Utilization (Jointly Established with Hainan Province), Ministry of Agriculture and Rural Affairs/Hainan Provincial Key Laboratory of Tropical Fruit Tree Biology/Haikou Scientific Observation and Experiment Station for Tropical Fruit Trees, Ministry of Agriculture and Rural Affairs, Haikou, Hainan 571100, China
  • 2.Sanya Research Institute of Hainan Academy of Agricultural Sciences, Sanya, Hainan 572000, China
Published: 2026-03-25 doi: 10.3969/j.issn.1000-2561.2026.03.004
Outline
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Dwarfism is a key trait for Litchi chinensis breeding and cultivation. Focusing on the candidate gene LcGAMYB23 implicated in dwarfism by prior quantitative trait locus (QTL) mapping, we evaluated the MYB transcription factor family background and its molecular application potential. A genome-wide bioinformatic survey identified 151 members of the LcMYB gene family. Conserved motif and domain analyses showed that all family members harbored the canonical Myb_DNA-binding domain, indicating high sequence conservation in litchi. We further cloned and sequenced LcGAMYB23 from three standard (non-dwarf) cultivars (9918, Feizixiao, FZX; Sanyuehong, SYH) and three dwarf cultivars (Nuomici, NMC; Yamulong, YML; Ziniangxi, ZNX), and detected consistent sequence differences between the two groups. Based on the divergent single-nucleotide polymorphism (SNP) sites, we developed molecular markers and validated them across 70 cultivars. The markers effectively discriminated standard versus dwarf types at the cDNA level, with concordant results at the genomic DNA level. The findings would provide practical tools for molecular typing and marker-assisted selection of dwarfism in litchi and lay the groundwork for functional elucidation of LcGAMYB23.

lychee  /  LcGAMYB23  /  gene family  /  bioinformatics analysis  /  molecular marker
Shuying FU, Mingchao YANG, Ding CHEN, Yukun HE, Haida DENG, Zhe CHEN, Tingting YAN, Xianghe WANG, Fuchu HU. Identification of the LcGAMYB Gene Family in Litchi chinensis and Development of Molecular Markers Associated with Dwarfing[J]. Chinese Journal of Tropical Crops, 2026 , 47 (3) : 588 -602 . DOI: 10.3969/j.issn.1000-2561.2026.03.004
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Year 2026 volume 47 Issue 3
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Article Info
doi: 10.3969/j.issn.1000-2561.2026.03.004
  • Receive Date：2025-11-03
  • Online Date：2026-06-26
  • Published：2026-03-25
Article Data
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History
  • Received：2025-11-03
  • Accepted：2025-11-20
Funding
Affiliations
    1.Institute of Tropical Fruit Trees, Hainan Academy of Agricultural Sciences/Key Laboratory of Tropical Horticultural Genetic Resources Evaluation and Utilization (Jointly Established with Hainan Province), Ministry of Agriculture and Rural Affairs/Hainan Provincial Key Laboratory of Tropical Fruit Tree Biology/Haikou Scientific Observation and Experiment Station for Tropical Fruit Trees, Ministry of Agriculture and Rural Affairs, Haikou, Hainan 571100, China
    2.Sanya Research Institute of Hainan Academy of Agricultural Sciences, Sanya, Hainan 572000, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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