Wheat Escapes Low Light Stress by Altering Pollination Types
Although low light stress seriously affects florets fertility and grain number during the reproductive period, crops can be fertilized by heterologous pollen to alleviate the reduction of grain number. However, wheat is strongly autogamous, how to change to outcross after low light remains unclear....
| Main Authors: | , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2022-06-01
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| Series: | Frontiers in Plant Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.924565/full |
| _version_ | 1818162165819899904 |
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| author | Hong Yang Yongpeng Li Dongxiao Li Liantao Liu Yunzhou Qiao Hongyong Sun Wenwen Liu Wenwen Liu Wenjun Qiao Wenjun Qiao Yuzhao Ma Mengyu Liu Cundong Li Baodi Dong |
| author_facet | Hong Yang Yongpeng Li Dongxiao Li Liantao Liu Yunzhou Qiao Hongyong Sun Wenwen Liu Wenwen Liu Wenjun Qiao Wenjun Qiao Yuzhao Ma Mengyu Liu Cundong Li Baodi Dong |
| author_sort | Hong Yang |
| collection | DOAJ |
| description | Although low light stress seriously affects florets fertility and grain number during the reproductive period, crops can be fertilized by heterologous pollen to alleviate the reduction of grain number. However, wheat is strongly autogamous, how to change to outcross after low light remains unclear. To understand the mechanisms of this change process, an approach combined morphological, physiological, and transcriptomic analyses was performed under low light stress imposed at the young microspore stage the booting stage from tetrad to uni-nucleate microspores stage. The results showed that low light stress caused pollen abortion, and the unfertilized ovary is fertilized by heterologous pollen after floret opening. Compared to control, the opening angle of lemma and glume were increased by 11.6–48.6 and 48.4–78.5%, respectively. The outcross of stressed wheat compensated for the 2.1–18.0% of grain number loss. During this process, phytohormones played an important role. Jasmonic acid (JA) and methyl jasmonate (MeJA) levels in spikelets were increased. Meanwhile, lignin and cellulose content decreased, and genes associated with cell wall related GO terms were enriched. Among the differentially expressed genes (DEGs), were identified 88-710 transcription factors genes, of which some homologs in Arabidopsis are proposed to function in lignin and cellulose, influencing the glume and lemma opening. Our finding can provide new insight into a survival mechanism to set seeds through pollination way alteration in the absence of self-fertilization after the stress of adversity. |
| first_indexed | 2024-12-11T16:29:20Z |
| format | Article |
| id | doaj.art-e5fccb2e9b8b4fd3bfb27630cb99cc37 |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-12-11T16:29:20Z |
| publishDate | 2022-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-e5fccb2e9b8b4fd3bfb27630cb99cc372022-12-22T00:58:38ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-06-011310.3389/fpls.2022.924565924565Wheat Escapes Low Light Stress by Altering Pollination TypesHong Yang0Yongpeng Li1Dongxiao Li2Liantao Liu3Yunzhou Qiao4Hongyong Sun5Wenwen Liu6Wenwen Liu7Wenjun Qiao8Wenjun Qiao9Yuzhao Ma10Mengyu Liu11Cundong Li12Baodi Dong13Key Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, State Key Laboratory of North China Crop Improvement and Regulation, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, ChinaKey Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, State Key Laboratory of North China Crop Improvement and Regulation, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, ChinaState Key Laboratory of North China Crop Improvement and Regulation, College of Agronomy, Hebei Agricultural University, Baoding, ChinaState Key Laboratory of North China Crop Improvement and Regulation, College of Agronomy, Hebei Agricultural University, Baoding, ChinaKey Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, State Key Laboratory of North China Crop Improvement and Regulation, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, ChinaKey Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, State Key Laboratory of North China Crop Improvement and Regulation, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, ChinaKey Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, State Key Laboratory of North China Crop Improvement and Regulation, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, ChinaCollege of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, State Key Laboratory of North China Crop Improvement and Regulation, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, ChinaCollege of Advanced Agricultural Sciences, University of Chinese Academy of Sciences, Beijing, ChinaKey Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, State Key Laboratory of North China Crop Improvement and Regulation, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, ChinaKey Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, State Key Laboratory of North China Crop Improvement and Regulation, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, ChinaState Key Laboratory of North China Crop Improvement and Regulation, College of Agronomy, Hebei Agricultural University, Baoding, ChinaKey Laboratory of Agricultural Water Resources, Hebei Laboratory of Agricultural Water-Saving, State Key Laboratory of North China Crop Improvement and Regulation, Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, ChinaAlthough low light stress seriously affects florets fertility and grain number during the reproductive period, crops can be fertilized by heterologous pollen to alleviate the reduction of grain number. However, wheat is strongly autogamous, how to change to outcross after low light remains unclear. To understand the mechanisms of this change process, an approach combined morphological, physiological, and transcriptomic analyses was performed under low light stress imposed at the young microspore stage the booting stage from tetrad to uni-nucleate microspores stage. The results showed that low light stress caused pollen abortion, and the unfertilized ovary is fertilized by heterologous pollen after floret opening. Compared to control, the opening angle of lemma and glume were increased by 11.6–48.6 and 48.4–78.5%, respectively. The outcross of stressed wheat compensated for the 2.1–18.0% of grain number loss. During this process, phytohormones played an important role. Jasmonic acid (JA) and methyl jasmonate (MeJA) levels in spikelets were increased. Meanwhile, lignin and cellulose content decreased, and genes associated with cell wall related GO terms were enriched. Among the differentially expressed genes (DEGs), were identified 88-710 transcription factors genes, of which some homologs in Arabidopsis are proposed to function in lignin and cellulose, influencing the glume and lemma opening. Our finding can provide new insight into a survival mechanism to set seeds through pollination way alteration in the absence of self-fertilization after the stress of adversity.https://www.frontiersin.org/articles/10.3389/fpls.2022.924565/fullwheatfloretgrain numberlow light stresspollination way |
| spellingShingle | Hong Yang Yongpeng Li Dongxiao Li Liantao Liu Yunzhou Qiao Hongyong Sun Wenwen Liu Wenwen Liu Wenjun Qiao Wenjun Qiao Yuzhao Ma Mengyu Liu Cundong Li Baodi Dong Wheat Escapes Low Light Stress by Altering Pollination Types Frontiers in Plant Science wheat floret grain number low light stress pollination way |
| title | Wheat Escapes Low Light Stress by Altering Pollination Types |
| title_full | Wheat Escapes Low Light Stress by Altering Pollination Types |
| title_fullStr | Wheat Escapes Low Light Stress by Altering Pollination Types |
| title_full_unstemmed | Wheat Escapes Low Light Stress by Altering Pollination Types |
| title_short | Wheat Escapes Low Light Stress by Altering Pollination Types |
| title_sort | wheat escapes low light stress by altering pollination types |
| topic | wheat floret grain number low light stress pollination way |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.924565/full |
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