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The F-box protein MIO1/SLB1 regulates organ size and leaf movement in Medicago truncatula
Zhou,Shaoli; Yang,Tianquan; Mao,Yawen; Liu,Ye; Guo,Shiqi; Wang,Ruoruo; Fangyue,Genwang; He,Liangliang; Zhao,Baolin; Bai,Quanzi; Li,Youhan; Zhang,Xiaojia; Wang,Dongfa; Wang,Chaoqun; Wu,Qing; Yang,Yuanfan; Liu,Yu; Tadege,Million; Chen,Jianghua
2021
Source PublicationJOURNAL OF EXPERIMENTAL BOTANY
ISSN0022-0957
Volume72Issue:8Pages:2995-3011
AbstractThe size of leaf and seed organs, determined by the interplay of cell proliferation and expansion, is closely related to the final yield and quality of forage and crops. Yet the cellular and molecular mechanisms underlying organ size modulation remain poorly understood, especially in legumes. Here, MINI ORGAN1 (MIO1), which encodes an F-box protein SMALL LEAF AND BUSHY1 (SLB1) recently reported to control lateral branching in Medicago truncatula, was identified as a key regulator of organ size. We show that loss-of-function of MIO1/SLB1 severely reduced organ size. Conversely, plants overexpressing MIO1/SLB1 had enlarged organs. Cellular analysis revealed that MIO1/SLB1 controlled organ size mainly by modulating primary cell proliferation during the early stages of leaf development. Biochemical analysis revealed that MIO1/SLB1 could form part of SKP1/Cullin/F-box (SCF) E3 ubiquitin ligase complex, to target BIG SEEDS1 (BSI), a repressor of primary cell division, for degradation. Interestingly, we found that MIO1/SLB1 also played a key role in pulvinus development and leaf movement by modulating cell proliferation of the pulvinus as leaves developed. Our study not only demonstrates a conserved role of MIO1/SLB1 in the control of organ size in legumes, but also sheds light on the novel function of MIO1/SLB1 in leaf movement.
KeywordBIG SEEDS1 (BS1) F-box protein MINI ORGAN1 (MIO1)/SMALL LEAF AND BUSHY1 (SLB1) SCF E3 ligase proteasome-mediated degradation organ size pulvinus CELL-PROLIFERATION ARABIDOPSIS-THALIANA TRANSCRIPTION FACTOR SEED SIZE GROWTH GENE IDENTIFICATION KINASES CYCLE E2FB
DOI10.1093/jxb/erab033
WOS IDWOS:000642310500016
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Document Type期刊论文
Identifierhttp://ir.kib.ac.cn/handle/151853/73755
Collection中国科学院昆明植物研究所
Affiliation1.Chinese Acad Sci, CAS Ctr Excellence Mol Plant Sci, CAS Key Lab Trop Plant Resources & Sustainable Us, Xishuangbanna Trop Bot Garden, Kunming, Yunnan, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming, Yunnan, Peoples R China
4.Univ Sci & Technol China, Sch Life Sci, Hefei, Peoples R China
5.Yunnan Univ, Sch Ecol & Environm Sci, Kunming, Yunnan, Peoples R China
6.Oklahoma State Univ, Inst Agr Biosci, Dept Plant & Soil Sci, 3210 Sam Noble Pkwy, Ardmore, OK 73401 USA
Recommended Citation
GB/T 7714
Zhou,Shaoli,Yang,Tianquan,Mao,Yawen,et al. The F-box protein MIO1/SLB1 regulates organ size and leaf movement in Medicago truncatula[J]. JOURNAL OF EXPERIMENTAL BOTANY,2021,72(8):2995-3011.
APA Zhou,Shaoli.,Yang,Tianquan.,Mao,Yawen.,Liu,Ye.,Guo,Shiqi.,...&Chen,Jianghua.(2021).The F-box protein MIO1/SLB1 regulates organ size and leaf movement in Medicago truncatula.JOURNAL OF EXPERIMENTAL BOTANY,72(8),2995-3011.
MLA Zhou,Shaoli,et al."The F-box protein MIO1/SLB1 regulates organ size and leaf movement in Medicago truncatula".JOURNAL OF EXPERIMENTAL BOTANY 72.8(2021):2995-3011.
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