Tomato arabinosyltransferase prevents precocious senescence
Senescence, a crucial developmental process in the life cycle of plants, involves programmed destruction of cellular components of leaves. The onset of senescence is synchronized with other developmental processes for successful reproduction since senescence eventually leads to cell death. Arabinosy...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2025-07-01
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| Series: | Horticultural Plant Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468014124000323 |
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| author | Ho-Young Jeong Yoonseo Lim Myeong-Gyun Seo Soon Ju Park Chanhui Lee Young-Joon Park Choon-Tak Kwon |
| author_facet | Ho-Young Jeong Yoonseo Lim Myeong-Gyun Seo Soon Ju Park Chanhui Lee Young-Joon Park Choon-Tak Kwon |
| author_sort | Ho-Young Jeong |
| collection | DOAJ |
| description | Senescence, a crucial developmental process in the life cycle of plants, involves programmed destruction of cellular components of leaves. The onset of senescence is synchronized with other developmental processes for successful reproduction since senescence eventually leads to cell death. Arabinosyltransferase FASCIATED AND BRANCHED 2 (FAB2) is known to control meristem proliferation. Here, we show that FAB2 could inhibit premature leaf senescence in tomato plants. Both chemically mutagenized and CRISPR-generated fab2 mutants exhibited excessively accelerated senescence, which resulted in sterility. Transcriptome analysis revealed that FAB2 extended leaf longevity by suppressing transcription of genes highly expressed in mature leaves. Transcription of FAB2 was increased in younger leaves, potentially inhibiting premature leaf senescence. The precocious senescence of fab2 mutants was in contrast to fasciated inflorescence (fin) mutants, which carried mutations in a hydroxyproline O-arabinosyltransferase gene, leading to meristem overproliferation. Our observations indicate that complex genetic hierarchy in the cascade of tomato arabinosyltransferases could control different aspects of developmental processes such as stem cell proliferation and senescence. |
| format | Article |
| id | doaj-art-4051a53cb2ca4d72b27cfe8207856cdb |
| institution | Kabale University |
| issn | 2468-0141 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Horticultural Plant Journal |
| spelling | doaj-art-4051a53cb2ca4d72b27cfe8207856cdb2025-08-20T03:28:24ZengKeAi Communications Co., Ltd.Horticultural Plant Journal2468-01412025-07-011141583159410.1016/j.hpj.2023.11.006Tomato arabinosyltransferase prevents precocious senescenceHo-Young Jeong0Yoonseo Lim1Myeong-Gyun Seo2Soon Ju Park3Chanhui Lee4Young-Joon Park5Choon-Tak Kwon6Department of Plant & Environmental New Resources, Kyung Hee University, Yongin 17104, Republic of KoreaGraduate School of Green-Bio Science, Kyung Hee University, Yongin 17104, Republic of KoreaGraduate School of Green-Bio Science, Kyung Hee University, Yongin 17104, Republic of KoreaDivision of Applied Life Science, Plant Molecular Biology and Biotechnology Research Center (PMBBRC), Gyeongsang National University, Jinju 52828, Republic of KoreaDepartment of Plant & Environmental New Resources, Kyung Hee University, Yongin 17104, Republic of Korea; Graduate School of Green-Bio Science, Kyung Hee University, Yongin 17104, Republic of KoreaDepartment of Smart Farm Science, Kyung Hee University, Yongin 17104, Republic of Korea; Corresponding authors.Graduate School of Green-Bio Science, Kyung Hee University, Yongin 17104, Republic of Korea; Department of Smart Farm Science, Kyung Hee University, Yongin 17104, Republic of Korea; Corresponding authors.Senescence, a crucial developmental process in the life cycle of plants, involves programmed destruction of cellular components of leaves. The onset of senescence is synchronized with other developmental processes for successful reproduction since senescence eventually leads to cell death. Arabinosyltransferase FASCIATED AND BRANCHED 2 (FAB2) is known to control meristem proliferation. Here, we show that FAB2 could inhibit premature leaf senescence in tomato plants. Both chemically mutagenized and CRISPR-generated fab2 mutants exhibited excessively accelerated senescence, which resulted in sterility. Transcriptome analysis revealed that FAB2 extended leaf longevity by suppressing transcription of genes highly expressed in mature leaves. Transcription of FAB2 was increased in younger leaves, potentially inhibiting premature leaf senescence. The precocious senescence of fab2 mutants was in contrast to fasciated inflorescence (fin) mutants, which carried mutations in a hydroxyproline O-arabinosyltransferase gene, leading to meristem overproliferation. Our observations indicate that complex genetic hierarchy in the cascade of tomato arabinosyltransferases could control different aspects of developmental processes such as stem cell proliferation and senescence.http://www.sciencedirect.com/science/article/pii/S2468014124000323ArabinosyltransferaseLeaf senescenceCRISPRFAB2Transcriptome analysis |
| spellingShingle | Ho-Young Jeong Yoonseo Lim Myeong-Gyun Seo Soon Ju Park Chanhui Lee Young-Joon Park Choon-Tak Kwon Tomato arabinosyltransferase prevents precocious senescence Horticultural Plant Journal Arabinosyltransferase Leaf senescence CRISPR FAB2 Transcriptome analysis |
| title | Tomato arabinosyltransferase prevents precocious senescence |
| title_full | Tomato arabinosyltransferase prevents precocious senescence |
| title_fullStr | Tomato arabinosyltransferase prevents precocious senescence |
| title_full_unstemmed | Tomato arabinosyltransferase prevents precocious senescence |
| title_short | Tomato arabinosyltransferase prevents precocious senescence |
| title_sort | tomato arabinosyltransferase prevents precocious senescence |
| topic | Arabinosyltransferase Leaf senescence CRISPR FAB2 Transcriptome analysis |
| url | http://www.sciencedirect.com/science/article/pii/S2468014124000323 |
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