湛江海域5种江蓠属物种(江蓠科,红藻门)的形态与分子鉴定研究

doi:10.11978/2025026

Morphological and molecular identification of five Gracilaria species (Gracilariaceae, Rhodophyta) in the Zhanjiang sea area

LI Nenghui^{1, 2, 3}, LYV Zhengwen^{1, 2, 3}, CAI Hongyan², LI Hang², ZENG Jun², HE Haiping², ZHU Yuzhen^{1,
2, 3, 4}, WU Kefeng^{1, 3, 4}, ZHAO Wei⁵, TAN Huaqiang^2,
4, LUO Hui^{1, 3, 4}

1. School of Ocean and Tropical Medicine, Guangdong Medical University, Zhanjiang 524023, China;

2. Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang), Zhanjiang 524002, China;

3. Marine Biomedical Research Institute of Guangdong Zhanjiang, Zhanjiang 524023, China;

4. Zhanjiang Engineering Research Center for Algae High-value Utilization, Zhanjiang 524023, China;

5. Guangdong Provincial Key Laboratory of Tropical Disease Research, School of Public Health, Southern Medical University, Guangzhou 510515, China

Received:2025-02-18 Revised:2025-04-22 Accepted:2025-04-27
Supported by:
Southern Marine Science and Engineering Guangdong Laboratory (Zhanjiang) Project, China (ZJW-2023-12); Zhanjiang Marine Youth Talent Innovation Program, China (2023E0008); Core Technology Research Project for Suitable Species of Modern Marine Ranch in Guangdong Province, China (2024-MRB-00-001); Discipline Construction Project of Guangdong Medical University, China (4SG23009G, 4SG22264G); Special Science and Technology Innovation Project of Guangdong Province, China (2022A01207)

Abstract

Abstract: Zhanjiang is located in the South China Sea and is rich in seaweed resources, but studies on the species diversity of the genus Gracilaria are scarce. To clarify the diversity of Gracilaria species and their phylogenetic relationships in this region, this study was conducted to taxonomically investigate the intertidal macroalgae resources in Zhanjiang waters through morphological, anatomical and molecular analyses. The results showed that five species were identified, namely Gracilaria hainanensis, G. salicornia, G. spinulosa, and two undescribed species (Gracilaria sp.). The taxonomic status of these five Gracilaria species is discussed in detail, and detailed and rich anatomical characterization images and molecular sequence data are provided. This study not only enriches the diversity of Gracilaria species in the Zhanjiang Sea, but also provides a scientific basis for the development of seaweed resources and biodiversity conservation in the region.

Key words: Gracilariaceae, phylogenetic analysis, rbcL, diversity, cryptic species

LI Nenghui LYV Zhengwen CAI Hongyan LI Hang ZENG Jun HE Haiping ZHU Yuzhen WU Kefeng ZHAO Wei TAN Huaqiang LUO Hui. Morphological and molecular identification of five Gracilaria species (Gracilariaceae, Rhodophyta) in the Zhanjiang sea area[J].Journal of Tropical Oceanography, 0, (): 1-.

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Morphological and molecular identification of five Gracilaria species (Gracilariaceae, Rhodophyta) in the Zhanjiang sea area

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