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Wang Y, Wang Q, Zhang F, Han C, Li W, Ren M, Wang Y, Qi K, Xie Z, Zhang S, Tao S. PbARF19-mediated auxin signaling regulates lignification in pear fruit stone cells. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2024; 344:112103. [PMID: 38657909 DOI: 10.1016/j.plantsci.2024.112103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 04/18/2024] [Accepted: 04/21/2024] [Indexed: 04/26/2024]
Abstract
The stone cells in pear fruits cause rough flesh and low juice, seriously affecting the taste. Lignin has been demonstrated as the main component of stone cells. Auxin, one of the most important plant hormone, regulates most physiological processes in plants including lignification. However, the concentration effect and regulators of auxin on pear fruits stone cell formation remains unclear. Here, endogenous indole-3-acetic acid (IAA) and stone cells were found to be co-localized in lignified cells by immunofluorescence localization analysis. The exogenous treatment of different concentrations of IAA demonstrated that the application of 200 µM IAA significantly reduced stone cell content, while concentrations greater than 500 µM significantly increased stone cell content. Besides, 31 auxin response factors (ARFs) were identified in pear genome. Putative ARFs were predicted as critical regulators involved in the lignification of pear flesh cells by phylogenetic relationship and expression analysis. Furthermore, the negative regulation of PbARF19 on stone cell formation in pear fruit was demonstrated by overexpression in pear fruitlets and Arabidopsis. These results illustrated that the PbARF19-mediated auxin signal plays a critical role in the lignification of pear stone cell by regulating lignin biosynthetic genes. This study provides theoretical and practical guidance for improving fruit quality in pear production.
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Affiliation(s)
- Yanling Wang
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Qi Wang
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Fanhang Zhang
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Chenyang Han
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Wen Li
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Mei Ren
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Yueyang Wang
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Kaijie Qi
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhihua Xie
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Shaoling Zhang
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China
| | - Shutian Tao
- Sanya Institute, College of Horticulture, State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing 210095, China.
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Zhang X, Bian A, Yang J, Liang Y, Zhang Z, Yan M, Yuan S, Zhang Q. Morphological Innovation Drives Sperm Release in Bryophytes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2306767. [PMID: 38552153 PMCID: PMC11132054 DOI: 10.1002/advs.202306767] [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: 09/17/2023] [Revised: 03/17/2024] [Indexed: 05/29/2024]
Abstract
Plant movements for survival are nontrivial. Antheridia in the moss Physcomitrium patens (P. patens) use motion to eject sperm in the presence of water. However, the biological and mechanical mechanisms that actuate the process are unknown. Here, the burst of the antheridium of P. patens, triggered by water, results from elastic instability and is determined by an asymmetric change in cell geometry. The tension generated in jacket cell walls of antheridium arises from turgor pressure, and is further promoted when the inner walls of apex burst in hydration, causing water and cellular contents of apex quickly influx into sperm chamber. The outer walls of the jacket cells are strengthened by NAC transcription factor VNS4 and serve as key morphomechanical innovations to store hydrostatic energy in a confined space in P. patens. However, the antheridium in liverwort Marchantia polymorpha (M. polymorpha) adopts a different strategy for sperm release; like jacket cell outer walls of P. patens, the cells surrounding the antheridium of M. polymorpha appear to play a similar role in the storage of energy. Collectively, the work shows that plants have evolved different ingenious devices for sperm discharge and that morphological innovations can differ.
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Affiliation(s)
- Xinxin Zhang
- Institute of BotanyChinese Academy of SciencesBeijing100093China
| | - Ang Bian
- College of Computer ScienceSichuan UniversityChengdu610065China
| | - Junbo Yang
- Shenzhen BranchGuangdong Laboratory of Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of Agriculture and Rural AffairsAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhenGuangdong518120China
| | - Ye Liang
- Core Facility of the State Key Laboratory of Membrane BiologyPeking UniversityBeijing100871China
| | - Zhe Zhang
- Department of Mechanical and Aerospace EngineeringThe Hong Kong University of Science and TechnologyClear Water BayHong Kong999077China
| | - Meng Yan
- School of Life ScienceHangzhou Institute for Advanced StudyUniversity of Chinese Academy of SciencesHangzhouZhejiang310024China
| | - Siqi Yuan
- College of Life SciencesState Key Laboratory of Crop Genetics & Germplasm Enhancement and UtilizationNanjing Agricultural UniversityNanjing210095China
| | - Qun Zhang
- College of Life SciencesState Key Laboratory of Crop Genetics & Germplasm Enhancement and UtilizationNanjing Agricultural UniversityNanjing210095China
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Gao H, Ma J, Zhao Y, Zhang C, Zhao M, He S, Sun Y, Fang X, Chen X, Ma K, Pang Y, Gu Y, Dongye Y, Wu J, Xu P, Zhang S. The MYB Transcription Factor GmMYB78 Negatively Regulates Phytophthora sojae Resistance in Soybean. Int J Mol Sci 2024; 25:4247. [PMID: 38673832 PMCID: PMC11050205 DOI: 10.3390/ijms25084247] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 04/08/2024] [Accepted: 04/09/2024] [Indexed: 04/28/2024] Open
Abstract
Phytophthora root rot is a devastating disease of soybean caused by Phytophthora sojae. However, the resistance mechanism is not yet clear. Our previous studies have shown that GmAP2 enhances sensitivity to P. sojae in soybean, and GmMYB78 is downregulated in the transcriptome analysis of GmAP2-overexpressing transgenic hairy roots. Here, GmMYB78 was significantly induced by P. sojae in susceptible soybean, and the overexpressing of GmMYB78 enhanced sensitivity to the pathogen, while silencing GmMYB78 enhances resistance to P. sojae, indicating that GmMYB78 is a negative regulator of P. sojae. Moreover, the jasmonic acid (JA) content and JA synthesis gene GmAOS1 was highly upregulated in GmMYB78-silencing roots and highly downregulated in overexpressing ones, suggesting that GmMYB78 could respond to P. sojae through the JA signaling pathway. Furthermore, the expression of several pathogenesis-related genes was significantly lower in GmMYB78-overexpressing roots and higher in GmMYB78-silencing ones. Additionally, we screened and identified the upstream regulator GmbHLH122 and downstream target gene GmbZIP25 of GmMYB78. GmbHLH122 was highly induced by P. sojae and could inhibit GmMYB78 expression in resistant soybean, and GmMYB78 was highly expressed to activate downstream target gene GmbZIP25 transcription in susceptible soybean. In conclusion, our data reveal that GmMYB78 triggers soybean sensitivity to P. sojae by inhibiting the JA signaling pathway and the expression of pathogenesis-related genes or through the effects of the GmbHLH122-GmMYB78-GmbZIP25 cascade pathway.
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Affiliation(s)
- Hong Gao
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Jia Ma
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Yuxin Zhao
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Chuanzhong Zhang
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Ming Zhao
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Shengfu He
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Yan Sun
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Xin Fang
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Xiaoyu Chen
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Kexin Ma
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Yanjie Pang
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Yachang Gu
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Yaqun Dongye
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Junjiang Wu
- Soybean Research Institute of Heilongjiang Academy of Agricultural Sciences/Key Laboratory of Soybean Cultivation of Ministry of Agriculture, Harbin 150030, China;
| | - Pengfei Xu
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
| | - Shuzhen Zhang
- Soybean Research Institute of Northeast Agricultural University/Key Laboratory of Soybean Biology of Chinese Education Ministry, Harbin 150030, China; (H.G.); (J.M.); (Y.Z.); (C.Z.); (M.Z.); (S.H.); (Y.S.); (X.F.); (X.C.); (K.M.); (Y.P.); (Y.G.); (Y.D.)
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Zhang Z, Liu Z, Wu H, Xu Z, Zhang H, Qian W, Gao W, She H. Genome-Wide Identification and Characterization of MYB Gene Family and Analysis of Its Sex-Biased Expression Pattern in Spinacia oleracea L. Int J Mol Sci 2024; 25:795. [PMID: 38255867 PMCID: PMC10815031 DOI: 10.3390/ijms25020795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 12/29/2023] [Accepted: 12/29/2023] [Indexed: 01/24/2024] Open
Abstract
The members of the myeloblastosis (MYB) family of transcription factors (TFs) participate in a variety of biological regulatory processes in plants, such as circadian rhythm, metabolism, and flower development. However, the characterization of MYB genes across the genomes of spinach Spinacia oleracea L. has not been reported. Here, we identified 140 MYB genes in spinach and described their characteristics using bioinformatics approaches. Among the MYB genes, 54 were 1R-MYB, 80 were 2R-MYB, 5 were 3R-MYB, and 1 was 4R-MYB. Almost all MYB genes were located in the 0-30 Mb region of autosomes; however, the 20 MYB genes were enriched at both ends of the sex chromosome (chromosome 4). Based on phylogeny, conserved motifs, and the structure of genes, 2R-MYB exhibited higher conservation relative to 1R-MYB genes. Tandem duplication and collinearity of spinach MYB genes drive their evolution, enabling the functional diversification of spinach genes. Subcellular localization prediction indicated that spinach MYB genes were mainly located in the nucleus. Cis-acting element analysis confirmed that MYB genes were involved in various processes of spinach growth and development, such as circadian rhythm, cell differentiation, and reproduction through hormone synthesis. Furthermore, through the transcriptome data analysis of male and female flower organs at five different periods, ten candidate genes showed biased expression in spinach males, suggesting that these genes might be related to the development of spinach anthers. Collectively, this study provides useful information for further investigating the function of MYB TFs and novel insights into the regulation of sex determination in spinach.
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Affiliation(s)
- Zhilong Zhang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China (W.Q.)
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Zhiyuan Liu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China (W.Q.)
| | - Hao Wu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China (W.Q.)
| | - Zhaosheng Xu
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China (W.Q.)
| | - Helong Zhang
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China (W.Q.)
| | - Wei Qian
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China (W.Q.)
| | - Wujun Gao
- College of Life Sciences, Henan Normal University, Xinxiang 453007, China
| | - Hongbing She
- State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China (W.Q.)
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Wang Y, Zhou H, He Y, Shen X, Lin S, Huang L. MYB transcription factors and their roles in the male reproductive development of flowering plants. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 335:111811. [PMID: 37574139 DOI: 10.1016/j.plantsci.2023.111811] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/29/2023] [Accepted: 07/25/2023] [Indexed: 08/15/2023]
Abstract
As one of the largest transcription factor families with complex functional differentiation in plants, the MYB transcription factors (MYB TFs) play important roles in the physiological and biochemical processes of plant growth and development. Male reproductive development, an essential part of sexual reproduction in flowering plants, is undoubtedly regulated by MYB TFs. In this review, we summarize the roles of the MYB TFs involved in the three stages of male reproductive development: pollen grains formation and maturation, filament elongation and anther dehiscence, and fertilization. Also, the potential downstream target genes and upstream regulators of these MYB TFs are discussed. Furthermore, we propose the underlying regulatory mechanisms of these MYB TFs: (1) A complex network of MYB TFs regulates various aspects of male reproductive development; (2) MYB homologous genes in different species may be functionally conserved or differentiated; (3) MYB TFs often form regulatory complexes with bHLH TFs.
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Affiliation(s)
- Yijie Wang
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Huiyan Zhou
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Yuanrong He
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China; Hainan Institute of Zhejiang University, Sanya, China
| | - Xiuping Shen
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China
| | - Sue Lin
- Institute of Life Sciences, College of Life and Environmental Science, Wenzhou University, Wenzhou 325000, Zhejiang, China
| | - Li Huang
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou 310058, China; Hainan Institute of Zhejiang University, Sanya, China.
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6
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Atsumi G, Naramoto S, Nishihara M, Nakatsuka T, Tomita R, Matsushita Y, Hoshi N, Shirakawa A, Kobayashi K, Fukuda H, Sekine KT. Identification of a novel viral factor inducing tumorous symptoms by disturbing vascular development in planta. J Virol 2023; 97:e0046323. [PMID: 37668368 PMCID: PMC10537666 DOI: 10.1128/jvi.00463-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 06/14/2023] [Indexed: 09/06/2023] Open
Abstract
Plant viruses induce various disease symptoms that substantially impact agriculture, but the underlying mechanisms of viral disease in plants are poorly understood. Kobu-sho is a disease in gentian that shows gall formation with ectopic development of lignified cells and vascular tissues such as xylem. Here, we show that a gene fragment of gentian Kobu-sho-associated virus, which is designated as Kobu-sho-inducing factor (KOBU), induces gall formation accompanied by ectopic development of lignified cells and xylem-like tissue in Nicotiana benthamiana. Transgenic gentian expressing KOBU exhibited tumorous symptoms, confirming the gall-forming activity of KOBU. Surprisingly, KOBU expression can also induce differentiation of an additional leaf-like tissue on the abaxial side of veins in normal N. benthamiana and gentian leaves. Transcriptome analysis with Arabidopsis thaliana expressing KOBU revealed that KOBU activates signaling pathways that regulate xylem development. KOBU protein forms granules and plate-like structures and co-localizes with mRNA splicing factors within the nucleus. Our findings suggest that KOBU is a novel pleiotropic virulence factor that stimulates vascular and leaf development. IMPORTANCE While various mechanisms determine disease symptoms in plants depending on virus-host combinations, the details of how plant viruses induce symptoms remain largely unknown in most plant species. Kobu-sho is a disease in gentian that shows gall formation with ectopic development of lignified cells and vascular tissues such as xylem. Our findings demonstrate that a gene fragment of gentian Kobu-sho-associated virus (GKaV), which is designated as Kobu-sho-inducing factor, induces the gall formation accompanied by the ectopic development of lignified cells and xylem-like tissue in Nicotiana benthamiana. The molecular mechanism by which gentian Kobu-sho-associated virus induces the Kobu-sho symptoms will provide new insight into not only plant-virus interactions but also the regulatory mechanisms underlying vascular and leaf development.
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Affiliation(s)
- Go Atsumi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
- Bioproduction Research Institute, National Institute of Advanced Industrial Science and Technology, Sapporo, Hokkaido, Japan
- Graduate School of Agriculture, Hokkaido University, Sapporo, Hokkaido, Japan
| | - Satoshi Naramoto
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | | | | | - Reiko Tomita
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
| | - Yosuke Matsushita
- National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Nobue Hoshi
- Iwate Agricultural Research Center, Kitakami, Iwate, Japan
| | | | - Kappei Kobayashi
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
- Faculty of Agriculture, Ehime University, Matsuyama, Ehime, Japan
| | - Hiroo Fukuda
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
| | - Ken-Taro Sekine
- Iwate Biotechnology Research Center, Kitakami, Iwate, Japan
- Faculty of Agriculture, University of the Ryukyus, Nishihara, Okinawa, Japan
- Department of Environmental Sciences and Conservation Biology, The United Graduate School of Agricultural Sciences, Kagoshima University, Kagoshima, Kagoshima, Japan
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Hu R, Wang J, Yang H, Wei D, Tang Q, Yang Y, Tian S, Wang Z. Comparative transcriptome analysis reveals the involvement of an MYB transcriptional activator, SmMYB108, in anther dehiscence in eggplant. FRONTIERS IN PLANT SCIENCE 2023; 14:1164467. [PMID: 37521920 PMCID: PMC10382176 DOI: 10.3389/fpls.2023.1164467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2023] [Accepted: 06/16/2023] [Indexed: 08/01/2023]
Abstract
Male sterility is a highly attractive agronomic trait as it effectively prevents self-fertilization and facilitates the production of high-quality hybrid seeds in plants. Timely release of mature pollen following anther dehiscence is essential for stamen development in flowering plants. Although several theories have been proposed regarding this, the specific mechanism of anther development in eggplant remains elusive. In this study, we selected an R2R3-MYB transcription factor gene, SmMYB108, that encodes a protein localized primarily in the nucleus by comparing the transcriptomics of different floral bud developmental stages of the eggplant fertile line, F142. Quantitative reverse transcription polymerase chain reaction revealed that SmMYB108 was preferentially expressed in flowers, and its expression increased significantly on the day of flowering. Overexpression of SmMYB108 in tobacco caused anther dehiscence. In addition, we found that SmMYB108 primarily functions as a transcriptional activator via C-terminal activation (amino acid 262-317). Yeast one-hybrid and dual-luciferase reporter assays revealed that genes (SmMYB21, SmARF6, and SmARF8) related to anther development targeted the SmMYB108 promoter. Overall, our results provide insights into the molecular mechanisms involved in the regulation of anther development by SmMYB108.
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Affiliation(s)
- Ruolin Hu
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Olericulture, Chongqing, China
| | - Jiali Wang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Olericulture, Chongqing, China
| | - Huiqing Yang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Olericulture, Chongqing, China
| | - Dayong Wei
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Olericulture, Chongqing, China
| | - Qinglin Tang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Olericulture, Chongqing, China
| | - Yang Yang
- The Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, China
| | - Shibing Tian
- The Institute of Vegetables and Flowers, Chongqing Academy of Agricultural Sciences, Chongqing, China
| | - Zhimin Wang
- College of Horticulture and Landscape Architecture, Southwest University, Chongqing, China
- Chongqing Key Laboratory of Olericulture, Chongqing, China
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Dong T, Wang L, Wang R, Yang X, Jia W, Yi M, Zhou X, He J. Transcriptomic analysis reveals candidate genes associated with anther development in Lilium Oriental Hybrid 'Siberia'. FRONTIERS IN PLANT SCIENCE 2023; 14:1128911. [PMID: 36844086 PMCID: PMC9945121 DOI: 10.3389/fpls.2023.1128911] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2022] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Lily (Lilium spp. and hybrids) is an important cut flower crop worldwide. Lily flowers have large anthers, which release a large amount of pollen that stains the tepals or clothing and thus can affect the commercial value of cut flowers. In this study, lily Oriental 'Siberia' was used to investigate the regulatory mechanism of lily anther development, which may provide information to prevent pollen pollution in the future. Based on the flower bud length, anther length and color, and anatomical observations, lily anther development was categorized into five stages: green (G), green-to-yellow 1 (GY1), green-to-yellow 2 (GY2), yellow (Y), and purple (P). Total RNA was extracted from the anthers at each stage for transcriptomic analysis. A total of 268.92-Gb clean reads were generated, and 81,287 unigenes were assembled and annotated. The number of differentially expressed genes (DEGs) and unique genes were largest for the pairwise comparison between the G and GY1 stages. The G and P samples were clustered separately, whereas the GY1, GY2, and Y samples were clustered together in scatter plots from a principal component analysis. Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses of DEGs detected in the GY1, GY2, and Y stages revealed that the pectin catabolic process, hormone levels, and phenylpropanoid biosynthesis were enriched. The DEGs associated with jasmonic acid biosynthesis and signaling were highly expressed at the early stages (G and GY1), whereas the DEGs associated with phenylpropanoid biosynthesis were mainly expressed in the intermediate stages (GY1, GY2, and Y). The DEGs involved in the pectin catabolic process were expressed at advanced stages (Y and P). Cucumber mosaic virus-induced gene silencing of LoMYB21 and LoAMS caused a strongly inhibited anther dehiscence phenotype, but without affecting the development of other floral organs. These results provide novel insights for understanding the regulatory mechanism of anther development in lily and other plants.
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Affiliation(s)
- Tingting Dong
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Lixuan Wang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Rui Wang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Xi Yang
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Wenjie Jia
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, College of Horticulture, China Agricultural University, Beijing, China
- Flower Research Institute, Yunnan Academy of Agriculture Sciences, Kunming, China
| | - Mingfang Yi
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Xiaofeng Zhou
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, College of Horticulture, China Agricultural University, Beijing, China
| | - Junna He
- Beijing Key Laboratory of Development and Quality Control of Ornamental Crops, College of Horticulture, China Agricultural University, Beijing, China
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Liu X, Zhang L, Yang S. Analysis of Floral Organ Development and Sex Determination in Schisandra chinensis by Scanning Electron Microscopy and RNA-Sequencing. LIFE (BASEL, SWITZERLAND) 2022; 12:life12081260. [PMID: 36013439 PMCID: PMC9410518 DOI: 10.3390/life12081260] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/09/2022] [Accepted: 08/11/2022] [Indexed: 11/16/2022]
Abstract
S. chinensis is a typical monoecious plant, and the number and development of female flowers determines the yield of S. chinensis. Due to a lack of genetic information, the molecular mechanism of sex differentiation in S. chinensis remains unclear. In this study, the combination of scanning electron microscopy (SEM) and RNA sequencing (RNA-seq) was used to understand the way of sex differentiation of S. chinensis and to mine the related genes of sex determination. The result shows the development of male and female S. chinensis flowers was completed at the same time, the unisexual S. chinensis flowers did not undergo a transition stage between sexes, and sex may have been determined at an early stage in flower development. The results of the gene function analysis of the plant hormone signaling pathway and sucrose metabolism pathway suggest that auxin and JA could be the key hormones for sex differentiation in S. chinensis, and sucrose may promote pollen maturation at the later stage of male flower development. Two AGAMOUS (GAG) genes, 10 AGAMOUS-like MADS-box (AGLs) genes, and the MYB, NAC, WRKY, bHLH, and Trihelix transcription factor families may play important roles in sex determination in S. chinensis. Taken together, the present findings provide valuable genetic information on flower development and sex determination in S. chinensis.
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Affiliation(s)
- Xiuyan Liu
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun 130118, China
- School of Life Sciences, Tonghua Normal University, Tonghua 134000, China
| | - Lifan Zhang
- School of Life Sciences, Tonghua Normal University, Tonghua 134000, China
| | - Shihai Yang
- College of Chinese Medicine Materials, Jilin Agricultural University, Changchun 130118, China
- Correspondence:
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10
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Wei L, Du H, Li X, Fan Y, Qian M, Li Y, Wang H, Qu C, Qian W, Xu X, Tang Z, Zhang K, Li J, Lu K. Spatio-temporal transcriptome profiling and subgenome analysis in Brassica napus. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 111:1123-1138. [PMID: 35763512 DOI: 10.1111/tpj.15881] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 06/22/2022] [Accepted: 06/23/2022] [Indexed: 06/15/2023]
Abstract
Brassica napus is an important oil crop and an allotetraploid species. However, the detailed analysis of gene function and homoeologous gene expression in all tissues at different developmental stages was not explored. In this study, we performed a global transcriptome analysis of 24 vegetative and reproductive tissues at six developmental stages (totally 111 tissues). These samples were clustered into eight groups. The gene functions of silique pericarp were similar to roots, stems and leaves. In particular, glucosinolate metabolic process was associated with root and silique pericarp. Genes involved in protein phosphorylation were often associated with stamen, anther and the early developmental stage of seeds. Transcription factor (TF) genes were more specific than structural genes. A total of 17 100 genes that were preferentially expressed in one tissue (tissue-preferred genes, TPGs), including 889 TFs (5.2%), were identified in the 24 tissues. Some TPGs were identified as hub genes in the co-expression network analysis, and some TPGs in different tissues were involved in different hormone pathways. About 67.0% of the homoeologs showed balanced expression, whereas biased expression of homoeologs was associated with structural divergence. In addition, the spatiotemporal expression of homoeologs was related to the presence of transposable elements (TEs) and regulatory elements (REs); more TEs and fewer REs in the promoters resulted in divergent expression in different tissues. This study provides a valuable transcriptional map for understanding the growth and development of B. napus, for identifying important genes for future crop improvement, and for exploring gene expression patterns in the B. napus.
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Affiliation(s)
- Lijuan Wei
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Hai Du
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Xiaodong Li
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Yonghai Fan
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Mingchao Qian
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Yali Li
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Huiyi Wang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Cunmin Qu
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Wei Qian
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Xinfu Xu
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Zhanglin Tang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Kai Zhang
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Jiana Li
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
| | - Kun Lu
- Integrative Science Center of Germplasm Creation in Western China (CHONGQING) Science City and Southwest University, College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing, 400715, China
- Academy of Agricultural Sciences, Southwest University, Beibei, Chongqing, 400715, China
- Engineering Research Center of South Upland Agriculture, Ministry of Education, Chongqing, 400715, China
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11
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Zhang L, Xie S, Yang C, Cao D, Fan S, Zhang X. Comparative Transcriptome Analysis Reveals Candidate Genes and Pathways for Potential Branch Growth in Elm ( Ulmus pumila) Cultivars. BIOLOGY 2022; 11:711. [PMID: 35625439 PMCID: PMC9139171 DOI: 10.3390/biology11050711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/29/2022] [Accepted: 05/02/2022] [Indexed: 11/16/2022]
Abstract
Wood plays a vital role in human life. It is important to study the thickening mechanism of tree branches and explore the mechanism of wood formation. Elm (Ulmus pumila) is a strong essential wood, and it is widely used in cabinets, sculptures, and ship making. In the present study, phenotypic and comparative transcriptomic analyses were performed in U. pumila fast- (UGu17 and UZuantian) and slow-growing cultivars (U81-07 and U82-39). Phenotypic observation showed that the thickness of secondary xylem of 2-year-old fast-growing branches was greater compared with slow-growing cultivars. A total of 9367 (up = 4363, down = 5004), 7159 (3413/3746), 7436 (3566/3870), and 5707 (2719/2988) differentially expressed genes (DEGs) were identified between fast- and slow-growing cultivars. Moreover, GO and KEGG enrichment analyses predicted that many pathways were involved in vascular development and transcriptional regulation in elm, such as "plant-type secondary cell wall biogenesis", "cell wall thickening", and "phenylpropanoid biosynthesis". NAC domain transcriptional factors (TFs) and their master regulators (VND1/MYB26), cellulose synthase catalytic subunits (CESAs) (such as IRX5/IRX3/IRX1), xylan synthesis, and secondary wall thickness (such as IRX9/IRX10/IRX8) were supposed to function in the thickening mechanism of elm branches. Our results indicated that the general phenylpropanoid pathway (such as PAL/C4H/4CL) and lignin metabolism (such as HCL/CSE/CCoAOMT/CCR/F5H) had vital functions in the growth of elm branches. Our transcriptome data were consistent with molecular results for branch thickening in elm cultivars.
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Affiliation(s)
| | | | | | | | - Shoujin Fan
- Key Lab of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan 250014, China; (L.Z.); (S.X.); (C.Y.); (D.C.)
| | - Xuejie Zhang
- Key Lab of Plant Stress Research, College of Life Science, Shandong Normal University, Jinan 250014, China; (L.Z.); (S.X.); (C.Y.); (D.C.)
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12
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Qi X, Guo S, Wang D, Zhong Y, Chen M, Chen C, Cheng D, Liu Z, An T, Li J, Jiao Y, Wang Y, Liu J, Zhang Y, Chen S, Liu C. ZmCOI2a and ZmCOI2b redundantly regulate anther dehiscence and gametophytic male fertility in maize. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:849-862. [PMID: 35167149 DOI: 10.1111/tpj.15708] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 02/07/2022] [Indexed: 06/14/2023]
Abstract
In higher plants, the generation and release of viable pollen from anthers is vital for double fertilization and the initiation of seed development. Thus, the characterization of genes related to pollen development and anther dehiscence in plants is of great significance. The F-box protein COI1 plays a crucial role in the jasmonate (JA) signaling pathway and interacts with many JAZ family proteins in the presence of jasmonoyl-isoleucine (JA-Ile) or coronatine (COR). The mutation of AtCOI1 in Arabidopsis leads to defective anther dehiscence and male sterility (MS), although COI has not been shown to affect fertility in Zea mays (maize). Here we identified two genes, ZmCOI2a and ZmCOI2b, that redundantly regulate gametophytic male fertility. Both ZmCOI2a and ZmCOI2b are highly homologous and constitutively expressed in all tissues tested. Subcellular localization revealed that ZmCOI2a and ZmCOI2b were located in the nucleus. The coi2a coi2b double mutant, generated by CRISPR/Cas9, had non-dehiscent anthers, delayed anther development and MS. In addition, coi2a coi2b male gametes could not be transmitted to the next generation because of severe defects in pollen germination. The JA content of coi2a coi2b anthers was unaltered compared with those of the wild type, and the exogenous application of JA could not rescue the fertility defects of coi2a coi2b. Transcriptome analysis showed that the expression of genes involving the JA signaling transduction pathway, including ZmJAZ3, ZmJAZ4, ZmJAZ5 and ZmJAZ15, was affected in coi2a coi2b. However, yeast two-hybrid assays showed that ZmJAZs interacted with ZmCOI1s, but not with ZmCOI2s. In conclusion, ZmCOI2a and ZmCOI2b redundantly regulate anther dehiscence and gametophytic male fertility in maize.
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Affiliation(s)
- Xiaolong Qi
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Shuwei Guo
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Dong Wang
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Yu Zhong
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Ming Chen
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Chen Chen
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Dehe Cheng
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Zongkai Liu
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Tai An
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Jinlong Li
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Yanyan Jiao
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Yuwen Wang
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Jinchu Liu
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Yuling Zhang
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Shaojiang Chen
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
| | - Chenxu Liu
- National Maize Improvement Center of China, Key Laboratory of Crop Heterosis and Utilization (MOE), China Agricultural University, Beijing, 100193, China
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13
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Guo X, Li L, Liu X, Zhang C, Yao X, Xun Z, Zhao Z, Yan W, Zou Y, Liu D, Li H, Lu H. MYB2 Is Important for Tapetal PCD and Pollen Development by Directly Activating Protease Expression in Arabidopsis. Int J Mol Sci 2022; 23:ijms23073563. [PMID: 35408924 PMCID: PMC8998314 DOI: 10.3390/ijms23073563] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 03/16/2022] [Accepted: 03/22/2022] [Indexed: 12/11/2022] Open
Abstract
Tapetal programmed cell death (PCD) is a complex biological process that plays an important role in pollen formation and reproduction. Here, we identified the MYB2 transcription factor expressed in the tapetum from stage 5 to stage 11 that was essential for tapetal PCD and pollen development in Arabidopsis thaliana. Downregulation of MYB2 retarded tapetal degeneration, produced defective pollen, and decreased pollen vitality. EMSA and transcriptional activation analysis revealed that MYB2 acted as an upstream activator and directly regulated expression of the proteases CEP1 and βVPE. The expression of these proteases was lower in the buds of the myb2 mutant. Overexpression of either/both CEP1 or/and βVPE proteases partially recover pollen vitality in the myb2 background. Taken together, our results revealed that MYB2 regulates tapetal PCD and pollen development by directly activating expression of the proteases CEP1 and βVPE. Thus, a transcription factor/proteases regulatory and activated cascade was established for tapetal PCD during another development in Arabidopsis thaliana. Highlight: MYB2 is involved in tapetal PCD and pollen development by directly regulating expression of the protease CEP1 and βVPE and establishes a transcription factor/proteases regulatory and activated cascade.
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Affiliation(s)
- Xiaorui Guo
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (X.G.); (H.L.)
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China;
| | - Lihong Li
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
| | - Xiatong Liu
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
| | - Chong Zhang
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
| | - Xiaoyun Yao
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
| | - Zhili Xun
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
| | - Zhijing Zhao
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
| | - Wenwen Yan
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
| | - Yirong Zou
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
| | - Di Liu
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China;
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
| | - Hui Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (X.G.); (H.L.)
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China;
- Correspondence:
| | - Hai Lu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (X.G.); (H.L.)
- The Tree and Ornamental Plant Breeding and Biotechnology Laboratory of National Forestry and Grassland Administration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (L.L.); (X.L.); (C.Z.); (X.Y.); (Z.X.); (Z.Z.); (W.Y.); (Y.Z.)
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14
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Zhang M, Cheng W, Yuan X, Wang J, Cheng T, Zhang Q. Integrated transcriptome and small RNA sequencing in revealing miRNA-mediated regulatory network of floral bud break in Prunus mume. FRONTIERS IN PLANT SCIENCE 2022; 13:931454. [PMID: 35937373 PMCID: PMC9355595 DOI: 10.3389/fpls.2022.931454] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/30/2022] [Indexed: 05/08/2023]
Abstract
MicroRNAs is one class of small non-coding RNAs that play important roles in plant growth and development. Though miRNAs and their target genes have been widely studied in many plant species, their functional roles in floral bud break and dormancy release in woody perennials is still unclear. In this study, we applied transcriptome and small RNA sequencing together to systematically explore the transcriptional and post-transcriptional regulation of floral bud break in P. mume. Through expression profiling, we identified a few candidate genes and miRNAs during different developmental stage transitions. In total, we characterized 1,553 DEGs associated with endodormancy release and 2,084 DEGs associated with bud flush. Additionally, we identified 48 known miRNAs and 53 novel miRNAs targeting genes enriched in biological processes such as floral organ morphogenesis and hormone signaling transudation. We further validated the regulatory relationship between differentially expressed miRNAs and their target genes combining computational prediction, degradome sequencing, and expression pattern analysis. Finally, we integrated weighted gene co-expression analysis and constructed miRNA-mRNA regulatory networks mediating floral bud flushing competency. In general, our study revealed the miRNA-mediated networks in modulating floral bud break in P. mume. The findings will contribute to the comprehensive understanding of miRNA-mediated regulatory mechanism governing floral bud break and dormancy cycling in wood perennials.
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15
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Zhu Y, Li L. Multi-layered Regulation of Plant Cell Wall Thickening. PLANT & CELL PHYSIOLOGY 2021; 62:1867-1873. [PMID: 34698856 DOI: 10.1093/pcp/pcab152] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 10/18/2021] [Accepted: 10/25/2021] [Indexed: 06/13/2023]
Abstract
Plants need to develop thickened cell walls with appropriate localization through precise regulation during the process of growth and development in order to support their body weight and to build long distance transportation systems. Wall thickening is achieved through a multitude of regulatory networks in various tissues under changeable environments. In this mini-review, we summarize current understanding of the regulatory pathways and mechanisms involved in cell wall thickening. Regulation of cell wall thickening is not only mechanistically essential to understand the plant structure accretion but also has applicable significance to plant cell wall biomass utilization.
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Affiliation(s)
- Yingying Zhu
- State Key Laboratory of Grassland Agro-ecosystem, Institute of Innovation Ecology and School of Life Science, Lanzhou University, Lanzhou 730000, China
| | - Laigeng Li
- National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200032, China
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Zhuang H, Chong SL, Priyanka B, Han X, Lin E, Tong Z, Huang H. Full-length transcriptomic identification of R2R3-MYB family genes related to secondary cell wall development in Cunninghamia lanceolata (Chinese fir). BMC PLANT BIOLOGY 2021; 21:581. [PMID: 34879821 PMCID: PMC8653563 DOI: 10.1186/s12870-021-03322-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 11/08/2021] [Indexed: 06/01/2023]
Abstract
BACKGROUND R2R3-MYB is a class of transcription factor crucial in regulating secondary cell wall development during wood formation. The regulation of wood formation in gymnosperm has been understudied due to its large genome size. Using Single-Molecule Real-Time sequencing, we obtained full-length transcriptomic libraries from the developmental stem of Cunninghamia lanceolata, a perennial conifer known as Chinese fir. The R2R3-MYB of C. lanceolata (hereafter named as ClMYB) associated with secondary wall development were identified based on phylogenetic analysis, expression studies and functional study on transgenic line. RESULTS The evolutionary relationship of 52 ClMYBs with those from Arabidopsis thaliana, Eucalyptus grandis, Populus trichocarpa, Oryza sativa, two gymnosperm species, Pinus taeda, and Picea glauca were established by neighbour-joining phylogenetic analysis. A large number of ClMYBs resided in the woody-expanded subgroups that predominated with the members from woody dicots. In contrast, the woody-preferential subgroup strictly carrying the members of woody dicots contained only one candidate. The results suggest that the woody-expanded subgroup emerges before the gymnosperm/angiosperm split, while most of the woody-preferential subgroups are likely lineage-specific to woody dicots. Nine candidates shared the same subgroups with the A. thaliana orthologs, with known function in regulating secondary wall development. Gene expression analysis inferred that ClMYB1/2/3/4/5/26/27/49/51 might participate in secondary wall development, among which ClMYB1/2/5/26/27/49 were significantly upregulated in the highly lignified compression wood region, reinforcing their regulatory role associated with secondary wall development. ClMYB1 was experimentally proven a transcriptional activator that localised in the nucleus. The overexpression of ClMYB1 in Nicotiana benthamiana resulted in an increased lignin deposition in the stems. The members of subgroup S4, ClMYB3/4/5 shared the ERF-associated amphiphilic repression motif with AtMYB4, which is known to repress the metabolism of phenylpropanoid derived compounds. They also carried a core motif specific to gymnosperm lineage, suggesting divergence of the regulatory process compared to the angiosperms. CONCLUSIONS This work will enrich the collection of full-length gymnosperm-specific R2R3-MYBs related to stem development and contribute to understanding their evolutionary relationship with angiosperm species.
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Affiliation(s)
- Hebi Zhuang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, China
| | - Sun-Li Chong
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, China
| | - Borah Priyanka
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, China
| | - Xiao Han
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, China
| | - Erpei Lin
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, China
| | - Zaikang Tong
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, China
| | - Huahong Huang
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Lin'an, Hangzhou, 311300, China.
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Li Z, Wang X, Yang K, Zhu C, Yuan T, Wang J, Li Y, Gao Z. Identification and expression analysis of the glycosyltransferase GT43 family members in bamboo reveal their potential function in xylan biosynthesis during rapid growth. BMC Genomics 2021; 22:867. [PMID: 34856932 PMCID: PMC8638195 DOI: 10.1186/s12864-021-08192-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 11/18/2021] [Indexed: 11/19/2022] Open
Abstract
Background Xylan is one of the most abundant hemicelluloses and can crosslink cellulose and lignin to increase the stability of cell walls. A number of genes encoding glycosyltransferases play vital roles in xylan biosynthesis in plants, such as those of the GT43 family. However, little is known about glycosyltransferases in bamboo, especially woody bamboo which is a good substitute for timber. Results A total of 17 GT43 genes (PeGT43–1 ~ PeGT43–17) were identified in the genome of moso bamboo (Phyllostachys edulis), which belong to three subfamilies with specific motifs. The phylogenetic and collinearity analyses showed that PeGT43s may have undergone gene duplication, as a result of collinearity found in 12 pairs of PeGT43s, and between 17 PeGT43s and 10 OsGT43s. A set of cis-acting elements such as hormones, abiotic stress response and MYB binding elements were found in the promoter of PeGT43s. PeGT43s were expressed differently in 26 tissues, among which the highest expression level was found in the shoots, especially in the rapid elongation zone and nodes. The genes coexpressed with PeGT43s were annotated as associated with polysaccharide metabolism and cell wall biosynthesis. qRT–PCR results showed that the coexpressed genes had similar expression patterns with a significant increase in 4.0 m shoots and a peak in 6.0 m shoots during fast growth. In addition, the xylan content and structural polysaccharide staining intensity in bamboo shoots showed a strong positive correlation with the expression of PeGT43s. Yeast one-hybrid assays demonstrated that PeMYB35 could recognize the 5′ UTR/promoter of PeGT43–5 by binding to the SMRE cis-elements. Conclusions PeGT43s were found to be adapted to the requirement of xylan biosynthesis during rapid cell elongation and cell wall accumulation, as evidenced by the expression profile of PeGT43s and the rate of xylan accumulation in bamboo shoots. Yeast one-hybrid analysis suggested that PeMYB35 might be involved in xylan biosynthesis by regulating the expression of PeGT43–5 by binding to its 5′ UTR/promoter. Our study provides a comprehensive understanding of PeGT43s in moso bamboo and lays a foundation for further functional analysis of PeGT43s for xylan biosynthesis during rapid growth. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-021-08192-y.
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Affiliation(s)
- Zhen Li
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing, 100102, China
| | - Xinyue Wang
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing, 100102, China
| | - Kebin Yang
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing, 100102, China
| | - Chenglei Zhu
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing, 100102, China
| | - Tingting Yuan
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing, 100102, China
| | - Jiongliang Wang
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing, 100102, China
| | - Ying Li
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing, 100102, China
| | - Zhimin Gao
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo & Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing, 100102, China.
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Onyenedum JG, Pace MR. The role of ontogeny in wood diversity and evolution. AMERICAN JOURNAL OF BOTANY 2021; 108:2331-2355. [PMID: 34761812 DOI: 10.1002/ajb2.1801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Accepted: 09/16/2021] [Indexed: 06/13/2023]
Abstract
Evolutionary developmental biology (evo-devo) explores the link between developmental patterning and phenotypic change through evolutionary time. In this review, we highlight the scientific advancements in understanding xylem evolution afforded by the evo-devo approach, opportunities for further engagement, and future research directions for the field. We review evidence that (1) heterochrony-the change in rate and timing of developmental events, (2) homeosis-the ontogenetic replacement of features, (3) heterometry-the change in quantity of a feature, (4) exaptation-the co-opting and repurposing of an ancestral feature, (5) the interplay between developmental and capacity constraints, and (6) novelty-the emergence of a novel feature, have all contributed to generating the diversity of woods. We present opportunities for future research engagement, which combine wood ontogeny within the context of robust phylogenetic hypotheses, and molecular biology.
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Affiliation(s)
- Joyce G Onyenedum
- School of Integrative Plant Sciences and L. H. Bailey Hortorium, Cornell University, Ithaca, New York, 14853, USA
| | - Marcelo R Pace
- Department of Botany, Instituto de Biología, Universidad Nacional Autónoma de México, Tercer Circuito s/n de Ciudad Universitaria, Mexico City, 04510, Mexico
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Åstrand J, Knight C, Robson J, Talle B, Wilson ZA. Evolution and diversity of the angiosperm anther: trends in function and development. PLANT REPRODUCTION 2021; 34:307-319. [PMID: 34173886 PMCID: PMC8566645 DOI: 10.1007/s00497-021-00416-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Accepted: 05/28/2021] [Indexed: 05/21/2023]
Abstract
Anther development and dehiscence is considered from an evolutionary perspective to identify drivers for differentiation, functional conservation and to identify key questions for future male reproduction research. Development of viable pollen and its timely release from the anther are essential for fertilisation of angiosperm flowers. The formation and subsequent dehiscence of the anther are under tight regulatory control, and these processes are remarkably conserved throughout the diverse families of the angiosperm clade. Anther development is a complex process, which requires timely formation and communication between the multiple somatic anther cell layers (the epidermis, endothecium, middle layer and tapetum) and the developing pollen. These layers go through regulated development and selective degeneration to facilitate the formation and ultimate release of the pollen grains. Insight into the evolution and divergence of anther development and dehiscence, especially between monocots and dicots, is driving greater understanding of the male reproductive process and increased, resilient crop yields. This review focuses on anther structure from an evolutionary perspective by highlighting their diversity across plant species. We summarise new findings that illustrate the complexities of anther development and evaluate how they challenge established models of anther form and function, and how they may help to deliver future sustainable crop yields.
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Affiliation(s)
- Johanna Åstrand
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
| | - Christopher Knight
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
| | - Jordan Robson
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
| | - Behzad Talle
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
| | - Zoe A. Wilson
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire LE12 5RD UK
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Pilati S, Malacarne G, Navarro-Payá D, Tomè G, Riscica L, Cavecchia V, Matus JT, Moser C, Blanzieri E. Vitis OneGenE: A Causality-Based Approach to Generate Gene Networks in Vitis vinifera Sheds Light on the Laccase and Dirigent Gene Families. Biomolecules 2021; 11:1744. [PMID: 34944388 PMCID: PMC8698957 DOI: 10.3390/biom11121744] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/11/2021] [Accepted: 11/16/2021] [Indexed: 12/24/2022] Open
Abstract
The abundance of transcriptomic data and the development of causal inference methods have paved the way for gene network analyses in grapevine. Vitis OneGenE is a transcriptomic data mining tool that finds direct correlations between genes, thus producing association networks. As a proof of concept, the stilbene synthase gene regulatory network obtained with OneGenE has been compared with published co-expression analysis and experimental data, including cistrome data for MYB stilbenoid regulators. As a case study, the two secondary metabolism pathways of stilbenoids and lignin synthesis were explored. Several isoforms of laccase, peroxidase, and dirigent protein genes, putatively involved in the final oxidative oligomerization steps, were identified as specifically belonging to either one of these pathways. Manual curation of the predicted sequences exploiting the last available genome assembly, and the integration of phylogenetic and OneGenE analyses, identified a group of laccases exclusively present in grapevine and related to stilbenoids. Here we show how network analysis by OneGenE can accelerate knowledge discovery by suggesting new candidates for functional characterization and application in breeding programs.
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Affiliation(s)
- Stefania Pilati
- Research and Innovation Centre, Department of Genomics and Biology of Fruit Crops, Fondazione Edmund Mach, 38098 San Michele all’Adige, Italy; (G.M.); (C.M.)
| | - Giulia Malacarne
- Research and Innovation Centre, Department of Genomics and Biology of Fruit Crops, Fondazione Edmund Mach, 38098 San Michele all’Adige, Italy; (G.M.); (C.M.)
| | - David Navarro-Payá
- Institute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, 46908 Paterna, Valencia, Spain; (D.N.-P.); (J.T.M.)
| | - Gabriele Tomè
- Centre for Integrative Biology (CIBIO), University of Trento, 38123 Trento, Italy;
| | - Laura Riscica
- Department of Information Engineering and Computer Science, University of Trento, 38123 Trento, Italy; (L.R.); (E.B.)
| | - Valter Cavecchia
- CNR-Institute of Materials for Electronics and Magnetism, 38123 Trento, Italy;
| | - José Tomás Matus
- Institute for Integrative Systems Biology (I2SysBio), Universitat de València-CSIC, 46908 Paterna, Valencia, Spain; (D.N.-P.); (J.T.M.)
| | - Claudio Moser
- Research and Innovation Centre, Department of Genomics and Biology of Fruit Crops, Fondazione Edmund Mach, 38098 San Michele all’Adige, Italy; (G.M.); (C.M.)
| | - Enrico Blanzieri
- Department of Information Engineering and Computer Science, University of Trento, 38123 Trento, Italy; (L.R.); (E.B.)
- CNR-Institute of Materials for Electronics and Magnetism, 38123 Trento, Italy;
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Transcriptome and Metabolome Analyses Provide Insights into the Stomium Degeneration Mechanism in Lily. Int J Mol Sci 2021; 22:ijms222212124. [PMID: 34830002 PMCID: PMC8619306 DOI: 10.3390/ijms222212124] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2021] [Revised: 11/03/2021] [Accepted: 11/04/2021] [Indexed: 11/18/2022] Open
Abstract
Lily (Lilium spp.) is a widely cultivated horticultural crop that has high ornamental and commercial value but also the serious problem of pollen pollution. However, mechanisms of anther dehiscence in lily remain largely unknown. In this study, the morphological characteristics of the stomium zone (SZ) from different developmental stages of ‘Siberia’ lily anthers were investigated. In addition, transcriptomic and metabolomic data were analyzed to identify the differentially expressed genes (DEGs) and secondary metabolites involved in stomium degeneration. According to morphological observations, SZ lysis occurred when flower buds were 6–8 cm in length and was completed in 9 cm. Transcriptomic analysis identified the genes involved in SZ degeneration, including those associated with hormone signal transduction, cell structure, reactive oxygen species (ROS), and transcription factors. A weighted co-expression network showed strong correlations between transcription factors. In addition, TUNEL (TdT-mediated dUTP nick-end labeling) assays showed that programmed cell death was important during anther SZ degeneration. Jasmonates might also have key roles in anther dehiscence by affecting the expression of the genes involved in pectin lysis, water transport, and cysteine protease. Collectively, the results of this study improve our understanding of anther dehiscence in lily and provide a data platform from which the molecular mechanisms of SZ degeneration can be revealed.
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Huang J, Chen F, Guo Y, Gan X, Yang M, Zeng W, Persson S, Li J, Xu W. GhMYB7 promotes secondary wall cellulose deposition in cotton fibres by regulating GhCesA gene expression through three distinct cis-elements. THE NEW PHYTOLOGIST 2021; 232:1718-1737. [PMID: 34245570 DOI: 10.1111/nph.17612] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 07/03/2021] [Indexed: 06/13/2023]
Abstract
Cotton fibre is the most important source for natural textiles. The secondary cell walls (SCWs) of mature cotton fibres contain the highest proportion of cellulose content (> 90%) in any plant. The onset and progression of SCW cellulose synthesis need to be tightly controlled to balance fibre elongation and cell wall deposition. However, regulatory mechanisms that control cellulose synthesis during cotton fibre growth remain elusive. Here, we conducted genetic and functional analyses demonstrating that the R2R3-MYB GhMYB7 controls cotton fibre cellulose synthesis. Overexpression of GhMYB7 in cotton sped up SCW cellulose biosynthesis in fibre cells, and led to shorter fibres with thicker walls. By contrast, RNA interference (RNAi) silencing of GhMYB7 delayed fibre SCW cellulose synthesis and resulted in elongated fibres with thinner walls. Furthermore, we demonstrated that GhMYB7 regulated cotton fibre SCW cellulose synthases by directly binding to three distinct cis-elements in the respective GhCesA4, GhCesA7 and GhCesA8 promoters. We found that this regulatory mechanism of cellulose synthesis was 'hi-jacked' also by other GhMYBs. Together, our findings uncover a hitherto-unknown mechanism that cotton fibre employs to regulate SCW cellulose synthesis. Our results also provide a strategy for genetic improvement of SCW thickness of cotton fibre.
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Affiliation(s)
- Junfeng Huang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Feng Chen
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Yanjun Guo
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Xinli Gan
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Mingming Yang
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Wei Zeng
- Sino-Australia Plant Cell Wall Research Centre, State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A&F University, Hangzhou, 311300, China
| | - Staffan Persson
- Joint International Research Laboratory of Metabolic & Developmental Sciences, State Key Laboratory of Hybrid Rice, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department for Plant and Environmental Sciences, University of Copenhagen, Frederiksberg C, 1871, Denmark
- Copenhagen Plant Science Center, University of Copenhagen, Frederiksberg C, 1871, Denmark
| | - Juan Li
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
| | - Wenliang Xu
- Hubei Key Laboratory of Genetic Regulation and Integrative Biology, School of Life Sciences, Central China Normal University, Wuhan, 430079, China
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Yang K, Li L, Lou Y, Zhu C, Li X, Gao Z. A regulatory network driving shoot lignification in rapidly growing bamboo. PLANT PHYSIOLOGY 2021; 187:900-916. [PMID: 34608957 PMCID: PMC8491019 DOI: 10.1093/plphys/kiab289] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Accepted: 05/31/2021] [Indexed: 05/24/2023]
Abstract
Woody bamboo is environmentally friendly, abundant, and an alternative to conventional timber. Degree of lignification and lignin content and deposition affect timber properties. However, the lignification regulatory network in monocots is poorly understood. To elucidate the regulatory mechanism of lignification in moso bamboo (Phyllostachys edulis), we conducted integrated analyses using transcriptome, small RNA, and degradome sequencing followed by experimental verification. The lignification degree and lignin content increased with increased bamboo shoot height, whereas phenylalanine ammonia-lyase and Laccase activities first increased and then decreased with shoot growth. Moreover, we identified 11,504 differentially expressed genes (DEGs) in different portions of the 13th internodes of different height shoots; most DEGs associated with cell wall and lignin biosynthesis were upregulated, whereas some DEGs related to cell growth were downregulated. We identified a total of 1,502 miRNAs, of which 687 were differentially expressed. Additionally, in silico and degradome analyses indicated that 5,756 genes were targeted by 691 miRNAs. We constructed a regulatory network of lignification, including 11 miRNAs, 22 transcription factors, and 36 enzyme genes, in moso bamboo. Furthermore, PeLAC20 overexpression increased lignin content in transgenic Arabidopsis (Arabidopsis thaliana) plants. Finally, we proposed a reliable miRNA-mediated "MYB-PeLAC20" module for lignin monomer polymerization. Our findings provide definite insights into the genetic regulation of bamboo lignification. In addition to providing a platform for understanding related mechanisms in other monocots, these insights could be used to develop strategies to improve bamboo timber properties.
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Affiliation(s)
- Kebin Yang
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Lichao Li
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Yongfeng Lou
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
- Jiangxi Academy of Forestry, Jiangxi Provincial Key Laboratory of Plant Biotechnology, Nanchang 330013, China
| | - Chenglei Zhu
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Xueping Li
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
| | - Zhimin Gao
- Key Laboratory of National Forestry and Grassland Administration/Beijing for Bamboo and Rattan Science and Technology, Institute of Gene Science and Industrialization for Bamboo and Rattan Resources, International Center for Bamboo and Rattan, Beijing 100102, China
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Kim S, Kim S. An insertion mutation located on putative enhancer regions of the MYB26-like gene induces inhibition of anther dehiscence resulting in novel genic male sterility in radish ( Raphanus sativus L.). MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2021; 41:67. [PMID: 37309318 PMCID: PMC10236041 DOI: 10.1007/s11032-021-01254-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 09/24/2021] [Indexed: 06/14/2023]
Abstract
A novel male-sterility trait was identified in a radish (Raphanus sativus L.) population. Although the size of male-sterile anthers was comparable to that of normal flowers, no pollen grain was observed during anther dehiscence. However, dissection of male-sterile anthers revealed an abundance of normal pollen grains. Analysis of segregating populations showed that a single recessive locus, designated RsMs1, conferred male sterility. Based on two radish draft genome sequences, molecular markers were developed to delimit the genomic region harboring the RsMs1. The region was narrowed down to approximately 24 kb after analyzing recombinants selected from 7511 individuals of a segregating population. Sequencing of the delimited region yielded six putative genes including four genes expressed in the floral tissue, and one gene with significant differential expression between male-fertile and male-sterile individuals of a segregating population. This differentially expressed gene was orthologous to the Arabidopsis MYB26 gene, which played a critical role in anther dehiscence. Excluding a synonymous single nucleotide polymorphism in exon3, no polymorphism involving coding and putative promoter regions was detected between alleles. A 955-bp insertion was identified 7.5 kb upstream of the recessive allele. Highly conserved motifs among four Brassicaceae species were identified around this insertion site, suggesting the presence of putative enhancer sequences. A functional marker was developed for genotyping of the RsMs1 based on the 955-bp insertion. A total of 120 PI accessions were analyzed using this marker, and 11 accessions were shown to carry the recessive rsms1 allele. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-021-01254-9.
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Affiliation(s)
- Seongjun Kim
- Jeollanamdo Agricultural Research and Extension Service, Naju-si, 58213 Republic of Korea
- Department of Horticulture, Biotechnology Research Institute, Chonnam National University, Gwangju, 61186 Republic of Korea
| | - Sunggil Kim
- Department of Horticulture, Biotechnology Research Institute, Chonnam National University, Gwangju, 61186 Republic of Korea
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Qu G, Peng D, Yu Z, Chen X, Cheng X, Yang Y, Ye T, Lv Q, Ji W, Deng X, Zhou B. Advances in the role of auxin for transcriptional regulation of lignin biosynthesis. FUNCTIONAL PLANT BIOLOGY : FPB 2021; 48:743-754. [PMID: 33663680 DOI: 10.1071/fp20381] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Accepted: 02/13/2021] [Indexed: 06/12/2023]
Abstract
Lignin is a natural polymer interlaced with cellulose and hemicellulose in secondary cell walls (SCWs). Auxin acts via its signalling transduction to regulate most of plant physiological processes. Lignification responds to auxin signals likewise and affects the development of anther and secondary xylem in plants. In this review, the research advances of AUXIN RESPONSE FACTOR (ARF)-dependent signalling pathways regulating lignin formation are discussed in detail. In an effort to facilitate the understanding of several key regulators in this process, we present a regulatory framework that comprises protein-protein interactions at the top and protein-gene regulation divided into five tiers. This characterises the regulatory roles of auxin in lignin biosynthesis and links auxin signalling transduction to transcriptional cascade of lignin biosynthesis. Our works further point to several of significant problems that need to be resolved in the future to gain a better understanding of the underlying mechanisms through which auxin regulates lignin biosynthesis.
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Affiliation(s)
- Gaoyi Qu
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China
| | - Dan Peng
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China; and Huitong National Field Station for Scientific Observation and Research of Chinese Fir Plantation Ecosystem in Hunan Province, Huitong 438107, China; and Forestry Biotechnology Hunan Key Laboratories, Hunan Changsha, 410004, China
| | - Ziqin Yu
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China
| | - Xinling Chen
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China
| | - Xinrui Cheng
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China
| | - Youzhen Yang
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China
| | - Tao Ye
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China
| | - Qiang Lv
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China
| | - Wenjun Ji
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China
| | - Xiangwen Deng
- National Engineering Laboratory of Applied Technology for Forestry and Ecology in Southern China, Changsha 410004, Hunan, China
| | - Bo Zhou
- Faculty of Life Science and Biotechnology of Central South University of Forestry and Technology; 410004, Changsha, China; and Huitong National Field Station for Scientific Observation and Research of Chinese Fir Plantation Ecosystem in Hunan Province, Huitong 438107, China; and National Engineering Laboratory of Applied Technology for Forestry and Ecology in Southern China, Changsha 410004, Hunan, China; and Forestry Biotechnology Hunan Key Laboratories, Hunan Changsha, 410004, China; and Key Laboratory of Cultivation and Protection for Non-Wood Forest Trees, Ministry of Education, Central South University of Forestry and Technology, 410018, Changsha, China; and Corresponding author.
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26
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Parker TA, Lo S, Gepts P. Pod shattering in grain legumes: emerging genetic and environment-related patterns. THE PLANT CELL 2021; 33:179-199. [PMID: 33793864 PMCID: PMC8136915 DOI: 10.1093/plcell/koaa025] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Accepted: 11/26/2020] [Indexed: 05/25/2023]
Abstract
A reduction in pod shattering is one of the main components of grain legume domestication. Despite this, many domesticated legumes suffer serious yield losses due to shattering, particularly under arid conditions. Mutations related to pod shattering modify the twisting force of pod walls or the structural strength of the dehiscence zone in pod sutures. At a molecular level, a growing body of evidence indicates that these changes are controlled by a relatively small number of key genes that have been selected in parallel across grain legume species, supporting partial molecular convergence. Legume homologs of Arabidopsis thaliana silique shattering genes play only minor roles in legume pod shattering. Most domesticated grain legume species contain multiple shattering-resistance genes, with mutants of each gene typically showing only partial shattering resistance. Hence, crosses between varieties with different genes lead to transgressive segregation of shattering alleles, producing plants with either enhanced shattering resistance or atavistic susceptibility to the trait. The frequency of these resistance pod-shattering alleles is often positively correlated with environmental aridity. The continued development of pod-shattering-related functional information will be vital for breeding crops that are suited to the increasingly arid conditions expected in the coming decades.
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Affiliation(s)
- Travis A Parker
- Department of Plant Sciences/MS1, Section of Crop & Ecosystem Sciences, University of California, 1 Shields Avenue, Davis, CA 95616-8780
| | - Sassoum Lo
- Department of Plant Sciences/MS1, Section of Crop & Ecosystem Sciences, University of California, 1 Shields Avenue, Davis, CA 95616-8780
| | - Paul Gepts
- Department of Plant Sciences/MS1, Section of Crop & Ecosystem Sciences, University of California, 1 Shields Avenue, Davis, CA 95616-8780
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Xiao R, Zhang C, Guo X, Li H, Lu H. MYB Transcription Factors and Its Regulation in Secondary Cell Wall Formation and Lignin Biosynthesis during Xylem Development. Int J Mol Sci 2021; 22:3560. [PMID: 33808132 PMCID: PMC8037110 DOI: 10.3390/ijms22073560] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 03/26/2021] [Accepted: 03/26/2021] [Indexed: 01/12/2023] Open
Abstract
The secondary wall is the main part of wood and is composed of cellulose, xylan, lignin, and small amounts of structural proteins and enzymes. Lignin molecules can interact directly or indirectly with cellulose, xylan and other polysaccharide molecules in the cell wall, increasing the mechanical strength and hydrophobicity of plant cells and tissues and facilitating the long-distance transportation of water in plants. MYBs (v-myb avian myeloblastosis viral oncogene homolog) belong to one of the largest superfamilies of transcription factors, the members of which regulate secondary cell-wall formation by promoting/inhibiting the biosynthesis of lignin, cellulose, and xylan. Among them, MYB46 and MYB83, which comprise the second layer of the main switch of secondary cell-wall biosynthesis, coordinate upstream and downstream secondary wall synthesis-related transcription factors. In addition, MYB transcription factors other than MYB46/83, as well as noncoding RNAs, hormones, and other factors, interact with one another to regulate the biosynthesis of the secondary wall. Here, we discuss the biosynthesis of secondary wall, classification and functions of MYB transcription factors and their regulation of lignin polymerization and secondary cell-wall formation during wood formation.
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Affiliation(s)
- Ruixue Xiao
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (R.X.); (H.L.)
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (C.Z.); (X.G.)
| | - Chong Zhang
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (C.Z.); (X.G.)
| | - Xiaorui Guo
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (C.Z.); (X.G.)
| | - Hui Li
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (R.X.); (H.L.)
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (C.Z.); (X.G.)
| | - Hai Lu
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, China; (R.X.); (H.L.)
- College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing 100083, China; (C.Z.); (X.G.)
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28
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Di Vittori V, Bitocchi E, Rodriguez M, Alseekh S, Bellucci E, Nanni L, Gioia T, Marzario S, Logozzo G, Rossato M, De Quattro C, Murgia ML, Ferreira JJ, Campa A, Xu C, Fiorani F, Sampathkumar A, Fröhlich A, Attene G, Delledonne M, Usadel B, Fernie AR, Rau D, Papa R. Pod indehiscence in common bean is associated with the fine regulation of PvMYB26. JOURNAL OF EXPERIMENTAL BOTANY 2021; 72:1617-1633. [PMID: 33247939 PMCID: PMC7921299 DOI: 10.1093/jxb/eraa553] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Accepted: 11/22/2020] [Indexed: 05/25/2023]
Abstract
In legumes, pod shattering occurs when mature pods dehisce along the sutures, and detachment of the valves promotes seed dispersal. In Phaseolus vulgaris (L)., the major locus qPD5.1-Pv for pod indehiscence was identified recently. We developed a BC4/F4 introgression line population and narrowed the major locus down to a 22.5 kb region. Here, gene expression and a parallel histological analysis of dehiscent and indehiscent pods identified an AtMYB26 orthologue as the best candidate for loss of pod shattering, on a genomic region ~11 kb downstream of the highest associated peak. Based on mapping and expression data, we propose early and fine up-regulation of PvMYB26 in dehiscent pods. Detailed histological analysis establishes that pod indehiscence is associated with the lack of a functional abscission layer in the ventral sheath, and that the key anatomical modifications associated with pod shattering in common bean occur early during pod development. We finally propose that loss of pod shattering in legumes resulted from histological convergent evolution and that it is the result of selection at orthologous loci.
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Affiliation(s)
- Valerio Di Vittori
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università Politecnica delle Marche, via Brecce Bianche, Ancona, Italy
- Max Planck Institute of Molecular Plant Physiology, Am Müehlenberg, Potsdam-Golm, Germany
| | - Elena Bitocchi
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università Politecnica delle Marche, via Brecce Bianche, Ancona, Italy
| | - Monica Rodriguez
- Dipartimento di Agraria, Università degli Studi di Sassari, Via E. De Nicola, Sassari, Italy
- Centro per la Conservazione e Valorizzazione della Biodiversità Vegetale, Università degli Studi di Sassari, SS 127bis, km 28.500 Surigheddu, Alghero, Italy
| | - Saleh Alseekh
- Max Planck Institute of Molecular Plant Physiology, Am Müehlenberg, Potsdam-Golm, Germany
- Center of Plant Systems Biology and Biotechnology, Plovdiv, Bulgaria
| | - Elisa Bellucci
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università Politecnica delle Marche, via Brecce Bianche, Ancona, Italy
| | - Laura Nanni
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università Politecnica delle Marche, via Brecce Bianche, Ancona, Italy
| | - Tania Gioia
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, viale dell’Ateneo Lucano, Potenza, Italy
| | - Stefania Marzario
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, viale dell’Ateneo Lucano, Potenza, Italy
| | - Giuseppina Logozzo
- Scuola di Scienze Agrarie, Forestali, Alimentari ed Ambientali, Università degli Studi della Basilicata, viale dell’Ateneo Lucano, Potenza, Italy
| | - Marzia Rossato
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Cà Vignal, Strada Le Grazie, Verona, Italy
| | - Concetta De Quattro
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Cà Vignal, Strada Le Grazie, Verona, Italy
| | - Maria L Murgia
- Dipartimento di Agraria, Università degli Studi di Sassari, Via E. De Nicola, Sassari, Italy
| | - Juan José Ferreira
- Plant Genetics Group, Agri-Food Research and Development Regional Service (SERIDA), Asturias, Spain
| | - Ana Campa
- Plant Genetics Group, Agri-Food Research and Development Regional Service (SERIDA), Asturias, Spain
| | - Chunming Xu
- Key Laboratory of Molecular Epigenetics of the Ministry of Education (MOE), Northeast Normal University, Changchun, China
| | - Fabio Fiorani
- Institute of Biosciences and Geosciences (IBG-2): Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Arun Sampathkumar
- Max Planck Institute of Molecular Plant Physiology, Am Müehlenberg, Potsdam-Golm, Germany
| | - Anja Fröhlich
- Max Planck Institute of Molecular Plant Physiology, Am Müehlenberg, Potsdam-Golm, Germany
| | - Giovanna Attene
- Dipartimento di Agraria, Università degli Studi di Sassari, Via E. De Nicola, Sassari, Italy
- Centro per la Conservazione e Valorizzazione della Biodiversità Vegetale, Università degli Studi di Sassari, SS 127bis, km 28.500 Surigheddu, Alghero, Italy
| | - Massimo Delledonne
- Dipartimento di Biotecnologie, Università degli Studi di Verona, Cà Vignal, Strada Le Grazie, Verona, Italy
| | - Björn Usadel
- Institute of Biosciences and Geosciences (IBG-2): Plant Sciences, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, Am Müehlenberg, Potsdam-Golm, Germany
- Center of Plant Systems Biology and Biotechnology, Plovdiv, Bulgaria
| | - Domenico Rau
- Dipartimento di Agraria, Università degli Studi di Sassari, Via E. De Nicola, Sassari, Italy
| | - Roberto Papa
- Dipartimento di Scienze Agrarie, Alimentari e Ambientali, Università Politecnica delle Marche, via Brecce Bianche, Ancona, Italy
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29
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Xue JS, Yao C, Xu QL, Sui CX, Jia XL, Hu WJ, Lv YL, Feng YF, Peng YJ, Shen SY, Yang NY, Lou YX, Yang ZN. Development of the Middle Layer in the Anther of Arabidopsis. FRONTIERS IN PLANT SCIENCE 2021; 12:634114. [PMID: 33643363 PMCID: PMC7902515 DOI: 10.3389/fpls.2021.634114] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 01/08/2021] [Indexed: 06/01/2023]
Abstract
The middle layer is an essential cell layer of the anther wall located between the endothecium and tapetum in Arabidopsis. Based on sectioning, the middle layer was found to be degraded at stage 7, which led to the separation of the tapetum from the anther wall. Here, we established techniques for live imaging of the anther. We created a marker line with fluorescent proteins expressed in all anther layers to study anther development. Several staining methods were used in the intact anthers to study anther cell morphology. We clarified the initiation, development, and degradation of the middle layer in Arabidopsis. This layer is initiated from both the inner and outer secondary parietal cells at stage 4, stopped cell division at stage 6, and finally degraded at stage 11. The neighboring cell layers, the epidermis, and endothecium continued cell division until stage 10, which led to a thin middle layer. The degradation of the tapetum cell wall at stage 7 lead to its isolation from the anther wall. This work presents fundamental information on the development of the middle layer, which facilitates the further investigation of anther development and plant fertility. These live imaging methods could be useful in future studies.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | - Zhong-Nan Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai, China
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30
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Cucinotta M, Cavalleri A, Chandler JW, Colombo L. Auxin and Flower Development: A Blossoming Field. Cold Spring Harb Perspect Biol 2021; 13:a039974. [PMID: 33355218 PMCID: PMC7849340 DOI: 10.1101/cshperspect.a039974] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The establishment of the species-specific floral organ body plan involves many coordinated spatiotemporal processes, which include the perception of positional information that specifies floral meristem and floral organ founder cells, coordinated organ outgrowth coupled with the generation and maintenance of inter-organ and inter-whorl boundaries, and the termination of meristem activity. Auxin is integrated within the gene regulatory networks that control these processes and plays instructive roles at the level of tissue-specific biosynthesis and polar transport to generate local maxima, perception, and signaling. Key features of auxin function in several floral contexts include cell nonautonomy, interaction with cytokinin gradients, and the central role of MONOPTEROS and ETTIN to regulate canonical and noncanonical auxin response pathways, respectively. Arabidopsis flowers are not representative of the enormous angiosperm floral diversity; therefore, comparative studies are required to understand how auxin underlies these developmental differences. It will be of great interest to compare the conservation of auxin pathways among flowering plants and to discuss the evolutionary role of auxin in floral development.
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Affiliation(s)
- Mara Cucinotta
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milan, Italy
| | - Alex Cavalleri
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milan, Italy
| | | | - Lucia Colombo
- Dipartimento di Bioscienze, Università degli Studi di Milano, 20133 Milan, Italy
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31
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Wang X, Wang D, Xu W, Kong L, Ye X, Zhuang Q, Fan D, Luo K. Histone methyltransferase ATX1 dynamically regulates fiber secondary cell wall biosynthesis in Arabidopsis inflorescence stem. Nucleic Acids Res 2021; 49:190-205. [PMID: 33332564 PMCID: PMC7797065 DOI: 10.1093/nar/gkaa1191] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Revised: 10/29/2020] [Accepted: 11/24/2020] [Indexed: 11/21/2022] Open
Abstract
Secondary wall thickening in the sclerenchyma cells is strictly controlled by a complex network of transcription factors in vascular plants. However, little is known about the epigenetic mechanism regulating secondary wall biosynthesis. In this study, we identified that ARABIDOPSIS HOMOLOG of TRITHORAX1 (ATX1), a H3K4-histone methyltransferase, mediates the regulation of fiber cell wall development in inflorescence stems of Arabidopsis thaliana. Genome-wide analysis revealed that the up-regulation of genes involved in secondary wall formation during stem development is largely coordinated by increasing level of H3K4 tri-methylation. Among all histone methyltransferases for H3K4me3 in Arabidopsis, ATX1 is markedly increased during the inflorescence stem development and loss-of-function mutant atx1 was impaired in secondary wall thickening in interfascicular fibers. Genetic analysis showed that ATX1 positively regulates secondary wall deposition through activating the expression of secondary wall NAC master switch genes, SECONDARY WALL-ASSOCIATED NAC DOMAIN PROTEIN1 (SND1) and NAC SECONDARY WALL THICKENING PROMOTING FACTOR1 (NST1). We further identified that ATX1 directly binds the loci of SND1 and NST1, and activates their expression by increasing H3K4me3 levels at these loci. Taken together, our results reveal that ATX1 plays a key role in the regulation of secondary wall biosynthesis in interfascicular fibers during inflorescence stem development of Arabidopsis.
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Affiliation(s)
- Xianqiang Wang
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing 400715, China
| | - Denghui Wang
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing 400715, China
| | - Wenjian Xu
- Beijing Key Laboratory for Genetics of Birth Defects, Beijing Pediatric Research Institute; MOE Key Laboratory of Major Diseases in Children; Genetics and Birth Defects Control Center, Beijing Children's Hospital, Capital Medical University, National Center for Children's Health, Beijing, China
| | - Lingfei Kong
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing 400715, China
| | - Xiao Ye
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing 400715, China
| | - Qianye Zhuang
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing 400715, China
| | - Di Fan
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing 400715, China.,Key Laboratory of Eco-environments of Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing 400715, China
| | - Keming Luo
- Chongqing Key Laboratory of Plant Resource Conservation and Germplasm Innovation, School of Life Sciences, Southwest University, Chongqing 400715, China.,Key Laboratory of Eco-environments of Three Gorges Reservoir Region, Ministry of Education, School of Life Sciences, Southwest University, Chongqing 400715, China
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32
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Rahmati Ishka M, Vatamaniuk OK. Copper deficiency alters shoot architecture and reduces fertility of both gynoecium and androecium in Arabidopsis thaliana. PLANT DIRECT 2020; 4:e00288. [PMID: 33283140 PMCID: PMC7700745 DOI: 10.1002/pld3.288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 10/21/2020] [Accepted: 10/25/2020] [Indexed: 05/05/2023]
Abstract
Copper deficiency reduces plant growth, male fertility, and seed set. The contribution of copper to female fertility and the underlying molecular aspects of copper deficiency-caused phenotypes are not well known. We show that among copper deficiency-caused defects in Arabidopsis thaliana were also the increased shoot branching, delayed flowering and senescence, and entirely abolished gynoecium fertility. The increased shoot branching of copper-deficient plants was rescued by the exogenous application of auxin or copper. The delayed flowering was associated with the decreased expression of the floral activator, FT. Copper deficiency also decreased the expression of senescence-associated genes, WRKY53 and SAG13, but increased the expression of SAG12. The reduced fertility of copper-deficient plants stemmed from multiple factors including the abnormal stigma papillae development, the abolished gynoecium fertility, and the failure of anthers to dehisce. The latter defect was associated with reduced lignification, the upregulation of copper microRNAs and the downregulation of their targets, laccases, implicated in lignin synthesis. Copper-deficient plants accumulated ROS in pollen and had reduced cytochrome c oxidase activity in both leaves and floral buds. This study opens new avenues for the investigation into the relationship between copper homeostasis, hormone-mediated shoot architecture, gynoecium fertility, and copper deficiency-derived nutritional signals leading to the delay in flowering and senescence.
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Affiliation(s)
- Maryam Rahmati Ishka
- Soil and Crop Sciences SectionSchool of Integrative Plant ScienceCornell UniversityIthacaNYUSA
| | - Olena K. Vatamaniuk
- Soil and Crop Sciences SectionSchool of Integrative Plant ScienceCornell UniversityIthacaNYUSA
- Plant Biology SectionSchool of Integrative Plant ScienceCornell UniversityIthacaNYUSA
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33
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Tang N, Liu W, Zhang W, Tang D. Integrative analysis of transcriptomic and proteomic changes related to male sterility in Tagetes erecta. PHYSIOLOGY AND MOLECULAR BIOLOGY OF PLANTS : AN INTERNATIONAL JOURNAL OF FUNCTIONAL PLANT BIOLOGY 2020; 26:2061-2074. [PMID: 33088050 PMCID: PMC7548268 DOI: 10.1007/s12298-020-00886-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 08/24/2020] [Accepted: 09/18/2020] [Indexed: 06/11/2023]
Abstract
Male sterile and male fertile two-type lines are important in heterosis utilization and breeding in Tagetes erecta, but the genes and pathways involved in male sterility are poorly understood. To explore these topics, transcriptome data (by RNA-seq) and proteome data (by iTRAQ) were gathered from flower buds of the male sterile line 'MS2-2' and male fertile line 'MF2-2' and integrated for a better understanding of the underlying molecular mechanisms of male sterility in T. erecta. The RNA-seq procedure generated 285,139,740 clean reads and 63359 unigenes and 6640 differentially expressed genes (DEGs) were identified, of which 4136 were downregulated and 2504 were upregulated in 'MS2-2'. DEGs related to flower development, pollen development, pollen wall assembly, endogenous hormones and transcription factors were identified. The iTRAQ analysis identified 3950 proteins in total; 789 were differentially expressed proteins (381 upregulated, 408 downregulated), which were mainly annotated to the Ribosome, Carbon metabolism and Biosynthesis of amino acids pathways. An association analysis revealed strong correlation (r Pearson = 0.6019) between the transcriptomic and proteomic data, and 256 and 34 proteins showed the same and opposite expression patterns with regard to their transcripts, respectively. Pathways such as photosynthesis, fatty acid biosynthesis and phenylpropanoid biosynthesis which influence tapetum and pollen development in male sterile plants, were significantly enriched at the transcript and protein levels. Most genes involved in these pathways were downregulated in 'MS2-2'. The low expression of these genes or functional loss of proteins could be associated with flower development, pollen development and related to changes in fertility in T. erecta. This study provided transcriptomic and proteomic information for T. erecta that could illuminate the mechanism of male sterility.
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Affiliation(s)
- Nan Tang
- Plateau Flower Research Centre, Department of Agriculture and Husbandry, Qinghai University, Xining, 810016 People’s Republic of China
- State Key Laboratory of Plateau Ecology and Agriculture, Qinghai University, Xining, 810016 People’s Republic of China
- Key Laboratory of Adaptation and Evolution of Plateau Biota, Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, 810001 People’s Republic of China
| | - Wei Liu
- College of Agriculture, Henan University of Science and Technology, Luoyang, 471003 People’s Republic of China
| | - Wuhua Zhang
- Plateau Flower Research Centre, Department of Agriculture and Husbandry, Qinghai University, Xining, 810016 People’s Republic of China
| | - Daocheng Tang
- Plateau Flower Research Centre, Department of Agriculture and Husbandry, Qinghai University, Xining, 810016 People’s Republic of China
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34
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Cheng Z, Hou D, Ge W, Li X, Xie L, Zheng H, Cai M, Liu J, Gao J. Integrated mRNA, MicroRNA Transcriptome and Degradome Analyses Provide Insights into Stamen Development in Moso Bamboo. PLANT & CELL PHYSIOLOGY 2020; 61:76-87. [PMID: 31550004 DOI: 10.1093/pcp/pcz179] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Accepted: 09/06/2019] [Indexed: 05/11/2023]
Abstract
A flower is an essential organ for sexual reproduction in flowering plants, which has been extensively studied in model plants. In this study, we used transcriptomic, small RNA and degradome analyses to characterize key microRNAs (miRNAs) and their targets in floral organs of moso bamboo. In total, we identified 13,051 differentially expressed genes and 109 known miRNAs from 26 miRNA families. We aligned the miRNAs to known miRNA databases and revealed some conserved as well as novel miRNAs. Sixteen conserved miRNAs were specifically and highly expressed in stamens, including miRNA159 and miRNA166. In situ hybridization shows that miRNA159 plays a key role in the regulation of stamen development, and the expression levels of its targets PheMYB98 and PheMYB42 were low. Furthermore, Phe-MIRNA159 partially recovers phenotypes of mir159ab double mutant. Overexpression of Phe-MIR159 could cause failure in anther dehisce, and the mature pollens could not be dispersed and further reduce fertility in Arabidopsis. Semi-thin section result shows that anther endothelial layer of Phe-MIRNA159 overexpressing lines is lack of secondary thickening, resulting in limited force for anther opening. Phe-miR159 may regulate the expression of genes related to secondary thickening through negative regulation of AtMYB33, affecting the anther dehiscence. Taken together, this study provides insights regarding molecular networks underlying floral organs development of moso bamboo.
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Affiliation(s)
- Zhanchao Cheng
- International Center for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry and Grassland Administration, Beijing 100102, China
| | - Dan Hou
- International Center for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry and Grassland Administration, Beijing 100102, China
| | - Wei Ge
- Beijing Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing University of Agriculture, Beijing, China
| | - Xiangyu Li
- International Center for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry and Grassland Administration, Beijing 100102, China
| | - Lihua Xie
- International Center for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry and Grassland Administration, Beijing 100102, China
| | - Huifang Zheng
- International Center for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry and Grassland Administration, Beijing 100102, China
| | - Miaomiao Cai
- International Center for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry and Grassland Administration, Beijing 100102, China
| | - Jun Liu
- International Center for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry and Grassland Administration, Beijing 100102, China
| | - Jian Gao
- International Center for Bamboo and Rattan, Key Laboratory of Bamboo and Rattan Science and Technology, State Forestry and Grassland Administration, Beijing 100102, China
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Acosta IF, Przybyl M. Jasmonate Signaling during Arabidopsis Stamen Maturation. PLANT & CELL PHYSIOLOGY 2019; 60:2648-2659. [PMID: 31651948 PMCID: PMC6896695 DOI: 10.1093/pcp/pcz201] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 10/22/2019] [Indexed: 06/10/2023]
Abstract
The last stages of stamen development, collectively called stamen maturation, encompass pollen viability, filament elongation and anther dehiscence or opening. These processes are essential for male fertility in Arabidopsis and require the function of jasmonate signaling. There is a good understanding of jasmonate synthesis, perception and transcriptional outputs in Arabidopsis stamens. In addition, the spatiotemporal localization of jasmonate signaling components at the tissue and cellular levels has started to emerge in recent years. However, the ultimate cellular functions activated by jasmonate to promote stamen maturation remain unknown. The hormones auxin and gibberellin have been proposed to control the activation of jasmonate synthesis to promote stamen maturation, although we hypothesize that this action is rather indirect. In this review, we examine these different areas, attempt to clarify some confusing aspects found in the literature and raise testable hypothesis that may help to further understand how jasmonate controls male fertility in Arabidopsis.
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Affiliation(s)
- Ivan F Acosta
- Max Planck Institute for Plant Breeding Research, Carl-von-Linn�-Weg 10, 50829 Cologne, Germany
| | - Marine Przybyl
- Max Planck Institute for Plant Breeding Research, Carl-von-Linn�-Weg 10, 50829 Cologne, Germany
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36
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Li Q, Wu Z, Wu H, Fang W, Chen F, Teng N. Transcriptome Profiling Unravels a Vital Role of Pectin and Pectinase in Anther Dehiscence in Chrysanthemum. Int J Mol Sci 2019; 20:E5865. [PMID: 31766739 PMCID: PMC6928809 DOI: 10.3390/ijms20235865] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/15/2019] [Accepted: 11/21/2019] [Indexed: 01/08/2023] Open
Abstract
Chrysanthemum (Chrysanthemum morifolium (Ramat.) Kitamura) plants have great ornamental value, but their flowers can also be a source of pollen contamination. Previously, morphological and cytological studies have shown that anthers of some chrysanthemum cultivars such as 'Qx-115' fail to dehisce, although the underlying mechanism is largely unknown. In this study, we investigated the molecular basis of anther indehiscence in chrysanthemum via transcriptome analysis of a dehiscent cultivar ('Qx-097') and an indehiscent cultivar ('Qx-115'). We also measured related physiological indicators during and preceding the period of anther dehiscence. Our results showed a difference in pectinase accumulation and activity between the two cultivars during dehiscence. Detection of de-esterified pectin and highly esterified pectin in anthers during the period preceding anther dehiscence using LM19 and LM20 monoclonal antibodies showed that both forms of pectin were absent in the stomium region of 'Qx-097' anthers but were abundant in that of 'Qx-115' anthers. Analysis of transcriptome data revealed a significant difference in the expression levels of two transcription factor-encoding genes, CmLOB27 and CmERF72, between 'Qx-097' and 'Qx-115' during anther development. Transient overexpression of CmLOB27 and CmERF72 separately in tobacco leaves promoted pectinase biosynthesis. We conclude that CmLOB27 and CmERF72 are involved in the synthesis of pectinase, which promotes the degradation of pectin. Our results lay a foundation for further investigation of the role of CmLOB27 and CmERF72 transcription factors in the process of anther dehiscence in chrysanthemum.
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Affiliation(s)
- Qian Li
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Baguazhou Science and Technology Innovation Center of Modern Horticulture Industry, Nanjing 210095, China
| | - Ze Wu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Baguazhou Science and Technology Innovation Center of Modern Horticulture Industry, Nanjing 210095, China
| | - Huijun Wu
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Baguazhou Science and Technology Innovation Center of Modern Horticulture Industry, Nanjing 210095, China
| | - Weimin Fang
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Fadi Chen
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
| | - Nianjun Teng
- College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
- Key Laboratory of Landscaping Agriculture, Ministry of Agriculture and Rural Affairs, Nanjing 210095, China
- Baguazhou Science and Technology Innovation Center of Modern Horticulture Industry, Nanjing 210095, China
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37
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Xiao Y, You S, Kong W, Tang Q, Bai W, Cai Y, Zheng H, Wang C, Jiang L, Wang C, Zhao Z, Wan J. A GARP transcription factor anther dehiscence defected 1 (OsADD1) regulates rice anther dehiscence. PLANT MOLECULAR BIOLOGY 2019; 101:403-414. [PMID: 31420780 DOI: 10.1007/s11103-019-00911-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 08/12/2019] [Indexed: 05/18/2023]
Abstract
Anther dehiscence, one of the essential steps in pollination and double fertilization, is regulated by a complex signaling pathway encompassing hormones and environmental factors. However, key components underlying the signaling pathway that regulate anther dehiscence remain largely elusive. Here, we isolated a rice mutant anther dehiscence defected 1 (Osadd1) that exhibited defects in anther dehiscence and glume open. Map-based cloning revealed that OsADD1 encoded a GARP (Golden2, ARR-B and Psr1) transcription factor. Sequence analysis showed that a single base deletion in Osadd1 mutant resulted in pre-termination of the GARP domain. OsADD1 was constitutively expressed in various tissues, with more abundance in the panicles. The major genes associated with anther dehiscence were affected in the Osadd1 mutant, and the expression level of the cellulose synthase-like D sub-family 4 (OsCSLD4) was significantly decreased. We demonstrate that OsADD1 regulated the expression of OsCSLD4 by binding to its promoter, and affects rice anther dehiscence.
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Affiliation(s)
- Yanjia Xiao
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shimin You
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Weiyi Kong
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qianying Tang
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Wenting Bai
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Yue Cai
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Hai Zheng
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chaolong Wang
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Ling Jiang
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chunming Wang
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhigang Zhao
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China
| | - Jianmin Wan
- National Key Laboratory for Crop Genetics and Germplasm Enhancement, Jiangsu Plant Gene Engineering Research Center, Nanjing Agricultural University, Nanjing, 210095, China.
- National Key Facility for Crop Gene Resources and Genetic Improvement, Institute of Crop Science, Chinese Academy of Agriculture Sciences, Beijing, 100081, China.
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38
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Xu XF, Wang B, Feng YF, Xue JS, Qian XX, Liu SQ, Zhou J, Yu YH, Yang NY, Xu P, Yang ZN. AUXIN RESPONSE FACTOR17 Directly Regulates MYB108 for Anther Dehiscence. PLANT PHYSIOLOGY 2019; 181:645-655. [PMID: 31345954 PMCID: PMC6776866 DOI: 10.1104/pp.19.00576] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/13/2019] [Indexed: 05/02/2023]
Abstract
The timely release of mature pollen following anther dehiscence is essential for reproduction in flowering plants. AUXIN RESPONSE FACTOR17 (ARF17) plays a crucial role in pollen wall pattern formation, tapetum development, and auxin signal transduction in anthers. Here, we showed that ARF17 is also involved in anther dehiscence. The Arabidopsis (Arabidopsis thaliana) arf17 mutant exhibits defective endothecium lignification, which leads to defects in anther dehiscence. The expression of MYB108, which encodes a transcription factor important for anther dehiscence, was dramatically down-regulated in the flower buds of arf17 Chromatin immunoprecipitation assays and electrophoretic mobility shift assays showed ARF17 directly binds to the MYB108 promoter. In an ARF17-GFP transgenic line, in which ARF17-GFP fully complements the arf17 phenotype, ARF17-GFP was observed in the endothecia at anther stage 11. The GUS signal driven by the MYB108 promoter was also detected in endothecia at late anther stages in transgenic plants expressing promoterMYB108::GUS Thus, the expression pattern of both ARF17 and MYB108 is consistent with the function of these genes in anther dehiscence. Furthermore, the expression of MYB108 driven by the ARF17 promoter successfully restored the defects in anther dehiscence of arf17 These results demonstrated that ARF17 regulates the expression of MYB108 for anther dehiscence. Together with its function in microcytes and tapeta, ARF17 likely coordinates the development of different sporophytic cell layers in anthers. The ARF17-MYB108 pathway involved in regulating anther dehiscence is also discussed.
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Affiliation(s)
- Xiao-Feng Xu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Bo Wang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Yi-Feng Feng
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Jing-Shi Xue
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Xue-Xue Qian
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Si-Qi Liu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Jie Zhou
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Ya-Hui Yu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Nai-Yin Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Ping Xu
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
| | - Zhong-Nan Yang
- Shanghai Key Laboratory of Plant Molecular Sciences, College of Life Sciences, Shanghai Normal University, Shanghai 200234, China
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39
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Zhao SQ, Li WC, Zhang Y, Tidy AC, Wilson ZA. Knockdown of Arabidopsis ROOT UVB SENSITIVE4 Disrupts Anther Dehiscence by Suppressing Secondary Thickening in the Endothecium. PLANT & CELL PHYSIOLOGY 2019; 60:2293-2306. [PMID: 31268148 DOI: 10.1093/pcp/pcz127] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Accepted: 06/20/2019] [Indexed: 06/09/2023]
Abstract
ROOT UV-B SENSITIVE4 (RUS4) encodes a protein with no known function that contains a conserved Domain of Unknown Function 647 (DUF647). The DUF647-containing proteins RUS1 and RUS2 have previously been associated with root UV-B-sensing pathway that plays a major role in Arabidopsis early seedling morphogenesis and development. Here, we show that RUS4 knockdown Arabidopsis plants, referred to as amiR-RUS4, were severely reduced in male fertility with indehiscent anthers. Light microscopy of anther sections revealed a significantly reduced secondary wall thickening in the endothecium of amiR-RUS4 anthers. We further show that the transcript abundance of the NAC domain genes NAC SECONDARY WALL THICKENING PROMOTING FACTOR1 (NST1) and NST2, which have been shown to regulate the secondary cell wall thickenings in the anther endothecium, were dramatically reduced in the amiR-RUS4 floral buds. Expression of the secondary cell wall-associated MYB transcription factor genes MYB103 and MYB85 were also strongly reduced in floral buds of the amiR-RUS4 plants. Overexpression of RUS4 led to increased secondary thickening in the endothecium. However, the rus4-2 mutant exhibited no obvious phenotype. Promoter-GUS analysis revealed that the RUS4 promoter was highly active in the anthers, supporting its role in anther development. Taken together, these results suggest that RUS4, probably functions redundantly with other genes, may play an important role in the secondary thickening formation in the anther endothecium by indirectly affecting the expression of secondary cell wall biosynthetic genes.
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Affiliation(s)
- Shu-Qing Zhao
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, China
| | - Wen-Chao Li
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, China
| | - Yi Zhang
- Key Laboratory of Chemical Biology and Molecular Engineering of Ministry of Education, Institute of Biotechnology, Shanxi University, Taiyuan, China
| | - Alison C Tidy
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
| | - Zoe A Wilson
- School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough, Leicestershire, UK
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40
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Shen X, Hu Z, Xiang X, Xu L, Cao J. Overexpression of a stamen-specific R2R3-MYB gene BcMF28 causes aberrant stamen development in transgenic Arabidopsis. Biochem Biophys Res Commun 2019; 518:726-731. [PMID: 31472956 DOI: 10.1016/j.bbrc.2019.08.119] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Accepted: 08/23/2019] [Indexed: 10/26/2022]
Abstract
In flowering plants, stamen development is a complex multistage process, which is highly regulated by a series of transcription factors. In this study, BcMF28, which encodes a R2R3-MYB transcription factor, was isolated from Brassica campestris. BcMF28 is localized in the nucleus and cytoplasm, and acts as a transcriptional activator. Quantitative real-time PCR and promoter activity analysis revealed that BcMF28 was predominately expressed in inflorescences. The expression of BcMF28 was specifically detected in tapetum, developing microspores, anther endothecium, and filaments during late stamen development. The overexpression of BcMF28 in Arabidopsis resulted in aberrant stamen development, including filament shortening, anther indehiscence, and pollen abortion. Detailed analysis of anther development in transgenic plants revealed that the degeneration of septum and stomium did not occur, and endothecium lignification was affected. Furthermore, the expression levels of genes involved in the phenylpropanoid metabolism pathway were altered in BcMF28-overexpressing transgenic plants. Our results suggest that BcMF28 plays an important regulatory role during late stamen development.
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Affiliation(s)
- Xiuping Shen
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Hangzhou, 310058, China.
| | - Ziwei Hu
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Hangzhou, 310058, China.
| | - Xun Xiang
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Hangzhou, 310058, China.
| | - Liai Xu
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Hangzhou, 310058, China.
| | - Jiashu Cao
- Laboratory of Cell & Molecular Biology, Institute of Vegetable Science, Zhejiang University, Hangzhou, 310058, China; Key Laboratory of Horticultural Plant Growth, Development and Quality Improvement, Ministry of Agriculture, Hangzhou, 310058, China; Zhejiang Provincial Key Laboratory of Horticultural Plant Integrative Biology, Hangzhou, 310058, China.
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41
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Jacobowitz JR, Doyle WC, Weng JK. PRX9 and PRX40 Are Extensin Peroxidases Essential for Maintaining Tapetum and Microspore Cell Wall Integrity during Arabidopsis Anther Development. THE PLANT CELL 2019; 31:848-861. [PMID: 30886127 PMCID: PMC6501601 DOI: 10.1105/tpc.18.00907] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 02/06/2019] [Accepted: 03/13/2019] [Indexed: 05/22/2023]
Abstract
Pollen and microspore development are essential steps in the life cycle of all land plants that generate male gametes. Within flowering plants, pollen development occurs inside of the anther. Here, we report the identification of two class III peroxidase-encoding genes, PEROXIDASE9 (PRX9) and PRX40, that are genetically redundant and essential for proper anther and pollen development in Arabidopsis (Arabidopsis thaliana). Arabidopsis double mutants devoid of functional PRX9 and PRX40 are male sterile. The mutant anthers display swollen, hypertrophic tapetal cells and pollen grains, suggesting disrupted cell wall integrity. These phenotypes lead to nearly 100%-penetrant pollen degeneration upon anther maturation. Using immunochemical and biochemical approaches, we show that PRX9 and PRX40 likely cross-link extensins to contribute to tapetal cell wall integrity during anther development. This work suggests that PRX9 and PRX40 encode Arabidopsis extensin peroxidases and highlights the importance of extensin cross-linking during pollen development.
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Affiliation(s)
- Joseph R Jacobowitz
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142
- Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139
| | - William C Doyle
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142
| | - Jing-Ke Weng
- Whitehead Institute for Biomedical Research, Cambridge, Massachusetts 02142
- Department of Biology, Massachusetts Institute of Technology, Cambridge, Massachusetts, 02139
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42
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Yan F, Deng W, Pang X, Gao Y, Chan H, Zhang Q, Hu N, Chen J, Li Z. Overexpression of the KNOX gene Tkn4 affects pollen development and confers sensitivity to gibberellin and auxin in tomato. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 281:61-71. [PMID: 30824062 DOI: 10.1016/j.plantsci.2018.12.024] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Revised: 12/04/2018] [Accepted: 12/20/2018] [Indexed: 05/28/2023]
Abstract
The knotted1-like homeobox genes not only regulate the formation and differentiation of meristems and vascular system but are also involved in biosynthesis and signal transduction of diverse plant hormones in tomato. Here, we showed that a knotted1-like homeobox gene Tkn4 is required for pollen and pollen tube growth when this gene is overexpressed in tomato. Pollen grains in the Tkn4 overexpressed plants (Tkn4-OX) germinated quicker than those in the wild-type (WT) plant cultured in vitro in germination media. The percentage of fruit set was higher in Tkn4-OX than in WT plants and the transgenic plants showed an ordered inflorescence. Tkn4-OX seedlings also exhibited sensitivity to gibberellins (GA) and auxins. RNA sequencing results showed that the expression of genes related to sugar, cell wall-modification, microtubule-associated vesicular transport for pollen growth, GA and auxin synthesis were significantly changed. Hence, Tkn4 contributes to a function in the development of pollen and pollen tube and the regulation of phytohormones to participate in plant growth. These results provided a potential application value for agricultural improvement to enhance the rate of fruit set in tomato.
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Affiliation(s)
- Fang Yan
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University; Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, 401331 Chongqing, China
| | - Wei Deng
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University; Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, 401331 Chongqing, China
| | - Xiaoqin Pang
- Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, 401331 Chongqing, China
| | - Yushuo Gao
- Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, 401331 Chongqing, China
| | - Helen Chan
- University of California, Davis, CA 95616
| | - Qiang Zhang
- Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, 401331 Chongqing, China
| | - Nan Hu
- Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, 401331 Chongqing, China
| | - Jingxuan Chen
- Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, 401331 Chongqing, China
| | - Zhengguo Li
- Key Laboratory of Plant Hormones and Development Regulation of Chongqing, School of Life Sciences, Chongqing University; Center of Plant Functional Genomics, Institute of Advanced Interdisciplinary Studies, Chongqing University, 401331 Chongqing, China.
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43
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Liu C, Yu H, Li L. SUMO modification of LBD30 by SIZ1 regulates secondary cell wall formation in Arabidopsis thaliana. PLoS Genet 2019; 15:e1007928. [PMID: 30657769 PMCID: PMC6355022 DOI: 10.1371/journal.pgen.1007928] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Revised: 01/31/2019] [Accepted: 01/02/2019] [Indexed: 11/18/2022] Open
Abstract
A wide range of biological processes are regulated by sumoylation, a post-translational modification involving the conjugation of SUMO (Small Ubiquitin-Like Modifier) to protein. In Arabidopsis thaliana, AtSIZ1 encodes a SUMO E3 ligase for SUMO modification. siz1 mutants displayed defective secondary cell walls (SCWs) in inflorescence fiber cells. Such defects were caused by repression of SND1/NST1-mediated transcriptional networks. Yeast two-hybrid assay indicated that SIZ1 interacts with the LBD30 C-terminal domain, which was further confirmed using bimolecular fluorescence complementation and immunoprecipitation. Mass spectrometry and co-immunoprecipitation indicated that SIZ1 mediates SUMO conjugation to LBD30 at the K226 residue. Genes controlling SCW formation were activated by the overexpression of LBD30, but not in the LBD30(K226R) mutant. LBD30 enhancement of SCW formation resulted from upregulation of SND1/NST1-mediated transcriptional networks. This study presents a mechanism by which sumoylation of LBD30, mediated by SIZ1, regulates SCW formation in A. thaliana.
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Affiliation(s)
- Chang Liu
- National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Hasi Yu
- National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
| | - Laigeng Li
- National Key Laboratory of Plant Molecular Genetics and CAS Center for Excellence in Molecular Plant Sciences, Shanghai Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, Shanghai, China
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44
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Wei D, Liu M, Chen H, Zheng Y, Liu Y, Wang X, Yang S, Zhou M, Lin J. INDUCER OF CBF EXPRESSION 1 is a male fertility regulator impacting anther dehydration in Arabidopsis. PLoS Genet 2018; 14:e1007695. [PMID: 30286083 PMCID: PMC6191155 DOI: 10.1371/journal.pgen.1007695] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 10/16/2018] [Accepted: 09/13/2018] [Indexed: 11/23/2022] Open
Abstract
INDUCER OF CBF EXPRESSION 1 (ICE1) encodes a MYC-like basic helix-loop-helix (bHLH) transcription factor playing a critical role in plant responses to chilling and freezing stresses and leaf stomata development. However, no information connecting ICE1 and reproductive development has been reported. In this study, we show that ICE1 controls plant male fertility via impacting anther dehydration. The loss-of-function mutation in ICE1 gene in Arabidopsis caused anther indehiscence and decreased pollen viability as well as germination rate. Further analysis revealed that the anthers in the mutant of ICE1 (ice1-2) had the structure of stomium, though the epidermis did not shrink to dehisce. The anther indehiscence and influenced pollen viability as well as germination in ice1-2 were due to abnormal anther dehydration, for most of anthers dehisced with drought treatment and pollen grains from those dehydrated anthers had similar viability and germination rates compared with wild type. Accordingly, the sterility of ice1-2 could be rescued by ambient dehydration treatments. Likewise, the stomatal differentiation of ice1-2 anther epidermis was disrupted in a different manner compared with that in leaves. ICE1 specifically bound to MYC-recognition elements in the promoter of FAMA, a key regulator of guard cell differentiation, to activate FAMA expression. Transcriptome profiling in the anther tissues further exhibited ICE1-modulated genes associated with water transport and ion exchange in the anther. Together, this work reveals the key role of ICE1 in male fertility control and establishes a regulatory network mediated by ICE1 for stomata development and water movement in the anther.
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Affiliation(s)
- Donghui Wei
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Mingjia Liu
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Hu Chen
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Ye Zheng
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Yuxiao Liu
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Xi Wang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Shuhua Yang
- State Key Laboratory of Plant Physiology and Biochemistry, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Mingqi Zhou
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, China
| | - Juan Lin
- State Key Laboratory of Genetic Engineering, Institute of Plant Biology, School of Life Sciences, Fudan University, Shanghai, China
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45
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Ghelli R, Brunetti P, Napoli N, De Paolis A, Cecchetti V, Tsuge T, Serino G, Matsui M, Mele G, Rinaldi G, Palumbo GA, Barozzi F, Costantino P, Cardarelli M. A Newly Identified Flower-Specific Splice Variant of AUXIN RESPONSE FACTOR8 Regulates Stamen Elongation and Endothecium Lignification in Arabidopsis. THE PLANT CELL 2018; 30:620-637. [PMID: 29514943 PMCID: PMC5894849 DOI: 10.1105/tpc.17.00840] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2017] [Revised: 01/29/2018] [Accepted: 03/06/2018] [Indexed: 05/18/2023]
Abstract
In addition to the full-length transcript ARF8.1, a splice variant (ARF8.2) of the auxin response factor gene ARF8 has been reported. Here, we identified an intron-retaining variant of ARF8.2, ARF8.4, whose translated product is imported into the nucleus and has tissue-specific localization in Arabidopsis thaliana By inducibly expressing each variant in arf8-7 flowers, we show that ARF8.4 fully complements the short-stamen phenotype of the mutant and restores the expression of AUX/IAA19, encoding a key regulator of stamen elongation. By contrast, the expression of ARF8.2 and ARF8.1 had minor or no effects on arf8-7 stamen elongation and AUX/IAA19 expression. Coexpression of ARF8.2 and ARF8.4 in both the wild type and arf8-7 caused premature anther dehiscence: We show that ARF8.2 is responsible for increased expression of the jasmonic acid biosynthetic gene DAD1 and that ARF8.4 is responsible for premature endothecium lignification due to precocious expression of transcription factor gene MYB26 Finally, we show that ARF8.4 binds to specific auxin-related sequences in both the AUX/IAA19 and MYB26 promoters and activates their transcription more efficiently than ARF8.2. Our data suggest that ARF8.4 is a tissue-specific functional splice variant that controls filament elongation and endothecium lignification by directly regulating key genes involved in these processes.
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Affiliation(s)
- Roberta Ghelli
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Sapienza Università di Roma, 00185 Rome, Italy
- Dipartimento di Biologia e Biotecnologie, Sapienza Università di Roma, 00185 Rome, Italy
| | - Patrizia Brunetti
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Sapienza Università di Roma, 00185 Rome, Italy
- Dipartimento di Biologia e Biotecnologie, Sapienza Università di Roma, 00185 Rome, Italy
| | - Nadia Napoli
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Sapienza Università di Roma, 00185 Rome, Italy
- Dipartimento di Biologia e Biotecnologie, Sapienza Università di Roma, 00185 Rome, Italy
| | - Angelo De Paolis
- Istituto di Scienze delle Produzioni Alimentari, Consiglio Nazionale delle Ricerche, 73100 Lecce, Italy
| | - Valentina Cecchetti
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Sapienza Università di Roma, 00185 Rome, Italy
| | - Tomohiko Tsuge
- Institute for Chemical Research, Kyoto University, Kyoto 606-8501, Japan
| | - Giovanna Serino
- Dipartimento di Biologia e Biotecnologie, Sapienza Università di Roma, 00185 Rome, Italy
| | - Minami Matsui
- RIKEN Center for Sustainable Resource Science, Yokohama, Kanagawa 230-0045, Japan
| | - Giovanni Mele
- Istituto di Biologia e Biotecnologia Agraria, Consiglio Nazionale delle Ricerche, Monterotondo Scalo, 00015 Rome, Italy
| | - Gianmarco Rinaldi
- Dipartimento di Biologia e Biotecnologie, Sapienza Università di Roma, 00185 Rome, Italy
| | - Gianna Aurora Palumbo
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Sapienza Università di Roma, 00185 Rome, Italy
| | - Fabrizio Barozzi
- Dipartimento di Biotecnologie e Scienze Ambientali, Università del Salento, 73100 Lecce, Italy
| | - Paolo Costantino
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Sapienza Università di Roma, 00185 Rome, Italy
- Dipartimento di Biologia e Biotecnologie, Sapienza Università di Roma, 00185 Rome, Italy
| | - Maura Cardarelli
- Istituto di Biologia e Patologia Molecolari, Consiglio Nazionale delle Ricerche, Sapienza Università di Roma, 00185 Rome, Italy
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