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Yan W, Yuan S, Zu Y, Chang Z, Li Y, Chen Z, Xie G, Chen L, Lu C, Deng XW, Yang C, Xu C, Tang X. Ornithine δ-aminotransferase OsOAT is critical for male fertility and cold tolerance during rice plant development. Plant J 2023; 114:1301-1318. [PMID: 36932862 DOI: 10.1111/tpj.16194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 03/11/2023] [Indexed: 06/17/2023]
Abstract
Cold stress is a major factor limiting the production and geographical distribution of rice (Oryza sativa) varieties. However, the molecular mechanisms underlying cold tolerance remain to be elucidated. Here, we report that ornithine δ-aminotransferase (OsOAT) contributes to cold tolerance during the vegetative and reproductive development of rice. osoat mutant was identified as a temperature-sensitive male sterile mutant with deformed floral organs and seedlings sensitive to cold stress. Comparative transcriptome analysis showed that OsOAT mutation and cold treatment of the wild-type plant led to similar changes in the global gene expression profiles in anthers. OsOAT genes in indica rice Huanghuazhan (HHZ) and japonica rice Wuyungeng (WYG) are different in gene structure and response to cold. OsOAT is cold-inducible in WYG but cold-irresponsive in HHZ. Further studies showed that indica varieties carry both WYG-type and HHZ-type OsOAT, whereas japonica varieties mostly carry WYG-type OsOAT. Cultivars carrying HHZ-type OsOAT are mainly distributed in low-latitude regions, whereas varieties carrying WYG-type OsOAT are distributed in both low- and high-latitude regions. Moreover, indica varieties carrying WYG-type OsOAT generally have higher seed-setting rates than those carrying HHZ-type OsOAT under cold stress at reproductive stage, highlighting the favorable selection for WYG-type OsOAT during domestication and breeding to cope with low temperatures.
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Affiliation(s)
- Wei Yan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
- Institute of Plant and Food Science, Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Shuting Yuan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Yazhou Zu
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Zhenyi Chang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Yiqi Li
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Zhufeng Chen
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Gang Xie
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Lei Chen
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Changqing Lu
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Xing Wang Deng
- Institute of Plant and Food Science, Department of Biology, Southern University of Science and Technology, Shenzhen, 518055, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Chengwei Yang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
| | - Chunjue Xu
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
| | - Xiaoyan Tang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107, China
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Pan X, Yan W, Chang Z, Xu Y, Luo M, Xu C, Chen Z, Wu J, Tang X. OsMYB80 Regulates Anther Development and Pollen Fertility by Targeting Multiple Biological Pathways. Plant Cell Physiol 2020; 61:988-1004. [PMID: 32142141 PMCID: PMC7217667 DOI: 10.1093/pcp/pcaa025] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 03/01/2020] [Indexed: 05/13/2023]
Abstract
Pollen development is critical to the reproductive success of flowering plants, but how it is regulated is not well understood. Here, we isolated two allelic male-sterile mutants of OsMYB80 and investigated how OsMYB80 regulates male fertility in rice. OsMYB80 was barely expressed in tissues other than anthers, where it initiated the expression during meiosis, reached the peak at the tetrad-releasing stage and then quickly declined afterward. The osmyb80 mutants exhibited premature tapetum cell death, lack of Ubisch bodies, no exine and microspore degeneration. To understand how OsMYB80 regulates anther development, RNA-seq analysis was conducted to identify genes differentially regulated by OsMYB80 in rice anthers. In addition, DNA affinity purification sequencing (DAP-seq) analysis was performed to identify DNA fragments interacting with OsMYB80 in vitro. Overlap of the genes identified by RNA-seq and DAP-seq revealed 188 genes that were differentially regulated by OsMYB80 and also carried an OsMYB80-interacting DNA element in the promoter. Ten of these promoter elements were randomly selected for gel shift assay and yeast one-hybrid assay, and all showed OsMYB80 binding. The 10 promoters also showed OsMYB80-dependent induction when co-expressed in rice protoplast. Functional annotation of the 188 genes suggested that OsMYB80 regulates male fertility by directly targeting multiple biological processes. The identification of these genes significantly enriched the gene networks governing anther development and provided much new information for the understanding of pollen development and male fertility.
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Affiliation(s)
- Xiaoying Pan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Wei Yan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
| | - Zhenyi Chang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
| | - Yingchao Xu
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Ming Luo
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Chunjue Xu
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
| | - Zhufeng Chen
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
- Corresponding authors: Xiaoyan Tang, E-mail, ; Fax, +86 020 85211372; Jianxin Wu, E-mail, ; Fax, +86 020 85211372; Zhufeng Chen; E-mail, ; Fax, + 86 2085211372
| | - Jianxin Wu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Corresponding authors: Xiaoyan Tang, E-mail, ; Fax, +86 020 85211372; Jianxin Wu, E-mail, ; Fax, +86 020 85211372; Zhufeng Chen; E-mail, ; Fax, + 86 2085211372
| | - Xiaoyan Tang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
- Corresponding authors: Xiaoyan Tang, E-mail, ; Fax, +86 020 85211372; Jianxin Wu, E-mail, ; Fax, +86 020 85211372; Zhufeng Chen; E-mail, ; Fax, + 86 2085211372
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Chang Z, Jin M, Yan W, Chen H, Qiu S, Fu S, Xia J, Liu Y, Chen Z, Wu J, Tang X. The ATP-binding cassette (ABC) transporter OsABCG3 is essential for pollen development in rice. Rice (N Y) 2018; 11:58. [PMID: 30311098 PMCID: PMC6181869 DOI: 10.1186/s12284-018-0248-8] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 09/14/2018] [Indexed: 05/18/2023]
Abstract
BACKGROUND The pollen wall, which protects male gametophyte against various stresses and facilitates pollination, is essential for successful reproduction in flowering plants. The pollen wall consists of gametophyte-derived intine and sporophyte-derived exine. From outside to inside of exine are tectum, bacula, nexine I and nexine II layers. How these structural layers are formed has been under extensive studies, but the molecular mechanisms remain obscure. RESULTS Here we identified two osabcg3 allelic mutants and demonstrated that OsABCG3 was required for pollen development in rice. OsABCG3 encodes a half-size ABCG transporter localized on the plasma membrane. It was mainly expressed in anther when exine started to form. Loss-function of OsABCG3 caused abnormal degradation of the tapetum. The mutant pollen lacked the nexine II and intine layers, and shriveled without cytoplasm. The expression of some genes required for pollen wall formation was examined in osabcg3 mutants. The mutation did not alter the expression of the regulatory genes and lipid metabolism genes, but altered the expression of lipid transport genes. CONCLUSIONS Base on the genetic and cytological analyses, OsABCG3 was proposed to transport the tapetum-produced materials essential for pollen wall formation. This study provided a new perspective to the genetic regulation of pollen wall development.
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Affiliation(s)
- Zhenyi Chang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631 China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107 China
| | - Mingna Jin
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107 China
| | - Wei Yan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631 China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107 China
- School of Life Sciences, Capital Normal University, Beijing, 10048 China
| | - Hui Chen
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107 China
| | - Shijun Qiu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631 China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107 China
| | - Shan Fu
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 53004 China
| | - Jixing Xia
- State Key Laboratory of Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 53004 China
| | - Yuchen Liu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631 China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107 China
| | - Zhufeng Chen
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107 China
| | - Jianxin Wu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631 China
| | - Xiaoyan Tang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, 510631 China
- Shenzhen Institute of Molecular Crop Design, Shenzhen, 518107 China
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