Transcriptomic landscape of staminate catkins development during overwintering process in Betula platyphylla

, belonging to the cold-specialized lineage Betulaceae, exhibits a unique reproductive strategy where staminate catkins emerge in the first summer and undergo an overwintering process, culminating in flowering in the following year. However, the underlying regulatory mechanism remains unclear. In th...

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Published inFrontiers in plant science Vol. 14; p. 1249122
Main Authors Zhang, Jingyun, Shi, Jiayuan, Zeng, Kehao, Cai, Mengjie, Lan, Xingguo
Format Journal Article
LanguageEnglish
Published Switzerland Frontiers Media S.A 08.01.2024
Subjects
Betula platyphylla
microspore
Plant Science
staminate catkins
transcriptome
weighted gene co-expression network analysis
weighted gene co-expression network analysis
Betula platyphylla
microspore
staminate catkins
transcriptome
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Summary:, belonging to the cold-specialized lineage Betulaceae, exhibits a unique reproductive strategy where staminate catkins emerge in the first summer and undergo an overwintering process, culminating in flowering in the following year. However, the underlying regulatory mechanism remains unclear. In this study, we investigated the male germline development of in four distinct stages: microsporocytes in Oct. (S1), uninuclear microspores from Dec. (S2) to Mar. of the following year (S3), and bicellular microspores in Apr. (S4). We performed RNA sequencing on mature pollen and the four stages of staminate catkins. Using weighted gene co-expression network analysis (WGCNA), we identified five highly correlated gene modules with distinct expression profiles. These modules exhibited strong correlations with sugar metabolism, cell cycle, flowering, and cell wall dynamics, highlighting their dynamic roles during male germline developmental stages. During the overwintering process, we observed that the expression of transcription factors such as and at the appropriate developmental stages, suggests their significant roles in male germline development. The expression patterns of and suggest their potential involvement in temperature perception during male reproductive development. These findings offer valuable insights into the reproductive success of plants adapting to cold environments.
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Edited by: Shaojun Dai, Shanghai Normal University, China
Chunpu Qu, Guizhou University, China
These authors have contributed equally to this work and share first authorship
Reviewed by: Lijun Chai, Huazhong Agricultural University, China
ISSN:1664-462X
1664-462X
DOI:10.3389/fpls.2023.1249122