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Zhou L, Mao Y, Yang Y, Wang J, Zhong X, Han Y, Zhang Y, Shi Q, Huang X, Meyers BC, Zhu J, Yang Z. Temperature and light reverse the fertility of rice P/TGMS line ostms19 via reactive oxygen species homeostasis. PLANT BIOTECHNOLOGY JOURNAL 2024; 22:2020-2032. [PMID: 38421616 PMCID: PMC11182586 DOI: 10.1111/pbi.14322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 01/30/2024] [Accepted: 02/17/2024] [Indexed: 03/02/2024]
Abstract
P/TGMS (Photo/thermo-sensitive genic male sterile) lines are crucial resources for two-line hybrid rice breeding. Previous studies revealed that slow development is a general mechanism for sterility-fertility conversion of P/TGMS in Arabidopsis. However, the difference in P/TGMS genes between rice and Arabidopsis suggests the presence of a distinct P/TGMS mechanism in rice. In this study, we isolated a novel P/TGMS line, ostms19, which shows sterility under high-temperature conditions and fertility under low-temperature conditions. OsTMS19 encodes a novel pentatricopeptide repeat (PPR) protein essential for pollen formation, in which a point mutation GTA(Val) to GCA(Ala) leads to ostms19 P/TGMS phenotype. It is highly expressed in the tapetum and localized to mitochondria. Under high temperature or long-day photoperiod conditions, excessive ROS accumulation in ostms19 anthers during pollen mitosis disrupts gene expression and intine formation, causing male sterility. Conversely, under low temperature or short-day photoperiod conditions, ROS can be effectively scavenged in anthers, resulting in fertility restoration. This indicates that ROS homeostasis is critical for fertility conversion. This relationship between ROS homeostasis and fertility conversion has also been observed in other tested rice P/TGMS lines. Therefore, we propose that ROS homeostasis is a general mechanism for the sterility-fertility conversion of rice P/TGMS lines.
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Affiliation(s)
- Lei Zhou
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life SciencesShanghai Normal UniversityShanghaiChina
| | - Yi‐Chen Mao
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life SciencesShanghai Normal UniversityShanghaiChina
| | - Yan‐Ming Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life SciencesShanghai Normal UniversityShanghaiChina
| | - Jun‐Jie Wang
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life SciencesShanghai Normal UniversityShanghaiChina
| | - Xiang Zhong
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life SciencesShanghai Normal UniversityShanghaiChina
| | - Yu Han
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life SciencesShanghai Normal UniversityShanghaiChina
| | - Yan‐Fei Zhang
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life SciencesShanghai Normal UniversityShanghaiChina
| | - Qiang‐Sheng Shi
- Jiangxi Yangtze River Economic Zone Research InstituteJiujiang UniversityJiujiangJiangxiChina
| | - Xue‐hui Huang
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life SciencesShanghai Normal UniversityShanghaiChina
| | | | - Jun Zhu
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life SciencesShanghai Normal UniversityShanghaiChina
| | - Zhong‐Nan Yang
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life SciencesShanghai Normal UniversityShanghaiChina
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Yao Q, Li P, Wang X, Liao S, Wang P, Huang S. Molecular mechanisms underlying the negative effects of transient heatwaves on crop fertility. PLANT COMMUNICATIONS 2024:101009. [PMID: 38915200 DOI: 10.1016/j.xplc.2024.101009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2024] [Revised: 06/04/2024] [Accepted: 06/22/2024] [Indexed: 06/26/2024]
Abstract
Transient heatwaves occurring more frequently as the climate warms, yet their impacts on crop yield are severely underestimated and even overlooked. Heatwaves lasting only a few days or even hours during sensitive stages, such as microgametogenesis and flowering, can significantly reduce crop yield by disrupting plant reproduction. Recent advances in multi-omics and GWAS analysis have shed light on the specific organs (e.g., pollen, lodicule, style), key metabolic pathways (sugar and reactive oxygen species metabolism, Ca2+ homeostasis), and essential genes that are involved in crop responses to transient heatwaves during sensitive stages. This review therefore places particular emphasis on heat-sensitive stages, with pollen development, floret opening, pollination, and fertilization as the central narrative thread. The multifaceted effects of transient heatwaves and their molecular basis are systematically reviewed, with a focus on key structures such as the lodicule and tapetum. A number of heat-tolerance genes associated with these processes have been identified in major crops like maize and rice. The mechanisms and key heat-tolerance genes shared among different stages may facilitate the more precise improvement of heat-tolerant crops.
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Affiliation(s)
- Qian Yao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Ping Li
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Xin Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
| | - Shuhua Liao
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Pu Wang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China
| | - Shoubing Huang
- College of Agronomy and Biotechnology, China Agricultural University, Beijing 100193, China.
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Zhang Z, Guo YY, Wang YC, Zhou L, Fan J, Mao YC, Yang YM, Zhang YF, Huang XH, Zhu J, Zhang C, Yang ZN. A point mutation in the meiotic crossover formation gene HEI10/TFS2 leads to thermosensitive genic sterility in rice. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2024; 118:506-518. [PMID: 38169508 DOI: 10.1111/tpj.16621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/18/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024]
Abstract
Thermosensitive genic female sterility (TGFS) is a promising property to be utilized for hybrid breeding. Here, we identified a rice TGFS line, tfs2, through an ethyl methyl sulfone (EMS) mutagenesis strategy. This line showed sterility under high temperature and became fertile under low temperature. Few seeds were produced when the tfs2 stigma was pollinated, indicating that tfs2 is female sterile. Gene cloning and genetic complementation showed that a point mutation from leucine to phenylalanine in HEI10 (HEI10tfs2), a crossover formation protein, caused the TGFS trait of tfs2. Under high temperature, abnormal univalents were formed, and the chromosomes were unequally segregated during meiosis, similar to the reported meiotic defects in oshei10. Under low temperature, the number of univalents was largely reduced, and the chromosomes segregated equally, suggesting that crossover formation was restored in tfs2. Yeast two-hybrid assays showed that HEI10 interacted with two putative protein degradation-related proteins, RPT4 and SRFP1. Through transient expression in tobacco leaves, HEI10 were found to spontaneously aggregate into dot-like foci in the nucleus under high temperature, but HEI10tfs2 failed to aggregate. In contrast, low temperature promoted HEI10tfs2 aggregation. This result suggests that protein aggregation at the crossover position contributes to the fertility restoration of tfs2 under low temperature. In addition, RPT4 and SRFP1 also aggregated into dot-like foci, and these aggregations depend on the presence of HEI10. These findings reveal a novel mechanism of fertility restoration and facilitate further understanding of HEI10 in meiotic crossover formation.
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Affiliation(s)
- Zheng Zhang
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yu-Yi Guo
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yi-Chen Wang
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Lei Zhou
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Jing Fan
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yi-Chen Mao
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yan-Ming Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Yan-Fei Zhang
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Xue-Hui Huang
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Jun Zhu
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Cheng Zhang
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
| | - Zhong-Nan Yang
- Shanghai Engineering Research Center of Plant Germplasm Resources, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
- Shanghai Key Laboratory of Plant Molecular Sciences, Shanghai Collaborative Innovation Center of Plant Germplasm Resources Development, College of Life Sciences, Shanghai Normal University, Shanghai, 200234, China
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