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Zheng D, Guo J, Liang Z, Jin Y, Ding Y, Liu J, Qi C, Shi K, Xie L, Zhu M, Wang L, Hu Z, Yang Z, Liu Q, Li X, Ning W, Gao J. Supramolecular Nanofibers Ameliorate Bleomycin-Induced Pulmonary Fibrosis by Restoring Autophagy. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2401327. [PMID: 38725147 PMCID: PMC11267363 DOI: 10.1002/advs.202401327] [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: 02/05/2024] [Revised: 04/02/2024] [Indexed: 07/25/2024]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a progressive and ultimately fatal interstitial lung disease, with limited therapeutic options available. Impaired autophagy resulting from aberrant TRB3/p62 protein-protein interactions (PPIs) contributes to the progression of IPF. Restoration of autophagy by modulating the TRB3/p62 PPIs has rarely been reported for the treatment of IPF. Herein, peptide nanofibers are developed that specifically bind to TRB3 protein and explored their potential as a therapeutic approach for IPF. By conjugating with the self-assembling fragment (Ac-GFFY), a TRB3-binding peptide motif A2 allows for the formation of nanofibers with a stable α-helix secondary structure. The resulting peptide (Ac-GFFY-A2) nanofibers exhibit specific high-affinity binding to TRB3 protein in saline buffer and better capacity of cellular uptake to A2 peptide. Furthermore, the TRB3-targeting peptide nanofibers efficiently interfere with the aberrant TRB3/p62 PPIs in activated fibroblasts and fibrotic lung tissue of mice, thereby restoring autophagy dysfunction. The TRB3-targeting peptide nanofibers inhibit myofibroblast differentiation, collagen production, and fibroblast migration in vitro is demonstrated, as well as bleomycin-induced pulmonary fibrosis in vivo. This study provides a supramolecular method to modulate PPIs and highlights a promising strategy for treating IPF diseases by restoring autophagy.
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Affiliation(s)
- Debin Zheng
- Beijing Key Laboratory of Disaster MedicineMedical Innovation Research Division of the Chinese PLA General HospitalNo. 28 Fu Xing RoadBeijing100853P. R. China
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Jiasen Guo
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Ziyi Liang
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Yueyue Jin
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Yinghao Ding
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Jingfei Liu
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Chao Qi
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Kaiwen Shi
- Beijing Key Laboratory of Disaster MedicineMedical Innovation Research Division of the Chinese PLA General HospitalNo. 28 Fu Xing RoadBeijing100853P. R. China
| | - Limin Xie
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Meiqi Zhu
- Beijing Key Laboratory of Disaster MedicineMedical Innovation Research Division of the Chinese PLA General HospitalNo. 28 Fu Xing RoadBeijing100853P. R. China
| | - Ling Wang
- State Key Laboratory of Medicinal Chemical BiologyCollege of PharmacyNankai UniversityTianjin300071P. R. China
| | - Zhiwen Hu
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Zhimou Yang
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Qian Liu
- Department of UrologyTianjin First Central HospitalTianjin300192P. R. China
| | - Xiaoxue Li
- Beijing Key Laboratory of Disaster MedicineMedical Innovation Research Division of the Chinese PLA General HospitalNo. 28 Fu Xing RoadBeijing100853P. R. China
| | - Wen Ning
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
| | - Jie Gao
- State Key Laboratory of Medicinal Chemical BiologyKey Laboratory of Bioactive Materials (Ministry of Education)College of Life SciencesNankai International Advanced Research Institute (SHENZHEN FUTIAN)Nankai UniversityTianjin300071P. R. China
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Chauveau C, Roby D. Molecular complexity of quantitative immunity in plants: from QTL mapping to functional and systems biology. C R Biol 2024; 347:35-44. [PMID: 38771313 DOI: 10.5802/crbiol.153] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2024] [Revised: 03/20/2024] [Accepted: 03/28/2024] [Indexed: 05/22/2024]
Abstract
In nature, plants defend themselves against pathogen attack by activating an arsenal of defense mechanisms. During the last decades, work mainly focused on the understanding of qualitative disease resistance mediated by a few genes conferring an almost complete resistance, while quantitative disease resistance (QDR) remains poorly understood despite the fact that it represents the predominant and more durable form of resistance in natural populations and crops. Here, we review our past and present work on the dissection of the complex mechanisms underlying QDR in Arabidopsis thaliana. The strategies, main steps and challenges of our studies related to one atypical QDR gene, RKS1 (Resistance related KinaSe 1), are presented. First, from genetic analyses by QTL (Quantitative Trait Locus) mapping and GWAs (Genome Wide Association studies), the identification, cloning and functional analysis of this gene have been used as a starting point for the exploration of the multiple and coordinated pathways acting together to mount the QDR response dependent on RKS1. Identification of RKS1 protein interactors and complexes was a first step, systems biology and reconstruction of protein networks were then used to decipher the molecular roadmap to the immune responses controlled by RKS1. Finally, exploration of the potential impact of key components of the RKS1-dependent gene network on leaf microbiota offers interesting and challenging perspectives to decipher how the plant immune systems interact with the microbial communities' systems.
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Zhong S, Zhao P, Peng X, Li HJ, Duan Q, Cheung AY. From gametes to zygote: Mechanistic advances and emerging possibilities in plant reproduction. PLANT PHYSIOLOGY 2024; 195:4-35. [PMID: 38431529 PMCID: PMC11060694 DOI: 10.1093/plphys/kiae125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 02/13/2024] [Accepted: 02/13/2024] [Indexed: 03/05/2024]
Affiliation(s)
- Sheng Zhong
- State Key Laboratory for Protein and Plant Gene Research, Peking-Tsinghua Center for Life Sciences, New Cornerstone Science Laboratory, College of Life Sciences, Peking University, Beijing 100871, China
| | - Peng Zhao
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan 430072, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Xiongbo Peng
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan 430072, China
- Hubei Hongshan Laboratory, Wuhan 430070, China
| | - Hong-Ju Li
- Key Laboratory of Seed Innovation, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Center for Molecular Agrobiology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Qiaohong Duan
- College of Horticulture Science and Engineering, Shandong Agricultural University, Tai’an, Shandong 271018, China
| | - Alice Y Cheung
- Department of Biochemistry and Molecular Biology, Molecular and Cellular Biology Program, Plant Biology Graduate Program, University of Massachusetts, Amherst, MA 01003, USA
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Liu Q, Fu Q, Yan Y, Jiang Q, Mao L, Wang L, Yu F, Zheng H. Curation, nomenclature, and topological classification of receptor-like kinases from 528 plant species for novel domain discovery and functional inference. MOLECULAR PLANT 2024; 17:658-671. [PMID: 38384130 DOI: 10.1016/j.molp.2024.02.015] [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: 11/19/2023] [Revised: 01/25/2024] [Accepted: 02/19/2024] [Indexed: 02/23/2024]
Abstract
Receptor-like kinases (RLKs) are the most numerous signal transduction components in plants and play important roles in determining how different plants adapt to their ecological environments. Research on RLKs has focused mainly on a small number of typical RLK members in a few model plants. There is an urgent need to study the composition, distribution, and evolution of RLKs at the holistic level to increase our understanding of how RLKs assist in the ecological adaptations of different plant species. In this study, we collected the genome assemblies of 528 plant species and constructed an RLK dataset. Using this dataset, we identified and characterized 524 948 RLK family members. Each member underwent systematic topological classification and was assigned a gene ID based on a unified nomenclature system. Furthermore, we identified two novel extracellular domains in some RLKs, designated Xiao and Xiang. Evolutionary analysis of the RLK family revealed that the RLCK-XVII and RLCK-XII-2 classes were present exclusively in dicots, suggesting that diversification of RLKs between monocots and dicots may have led to differences in downstream cytoplasmic responses. We also used an interaction proteome to help empower data mining for inference of new RLK functions from a global perspective, with the ultimate goal of understanding how RLKs shape the adaptation of different plants to the environments/ecosystems. The assembled RLK dataset, together with annotations and analytical tools, forms an integrated foundation of multiomics data that is publicly accessible via the metaRLK web portal (http://metaRLK.biocloud.top).
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Affiliation(s)
- Qian Liu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University College of Biology, Changsha, Hunan 410082, China
| | - Qiong Fu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University College of Biology, Changsha, Hunan 410082, China
| | - Yujie Yan
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University College of Biology, Changsha, Hunan 410082, China
| | - Qian Jiang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University College of Biology, Changsha, Hunan 410082, China
| | - Longfei Mao
- Bioinformatics Center, Hunan University College of Biology, Changsha, Hunan 410082, China
| | - Long Wang
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University College of Biology, Changsha, Hunan 410082, China
| | - Feng Yu
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University College of Biology, Changsha, Hunan 410082, China.
| | - Heping Zheng
- State Key Laboratory of Chemo/Biosensing and Chemometrics, Hunan University College of Biology, Changsha, Hunan 410082, China; Bioinformatics Center, Hunan University College of Biology, Changsha, Hunan 410082, China.
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Fu Q, Liu Q, Zhang R, Chen J, Guo H, Ming Z, Yu F, Zheng H. Large-scale analysis of the N-terminal regulatory elements of the kinase domain in plant Receptor-like kinase family. BMC PLANT BIOLOGY 2024; 24:174. [PMID: 38443815 PMCID: PMC10916322 DOI: 10.1186/s12870-024-04846-7] [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: 06/11/2023] [Accepted: 02/21/2024] [Indexed: 03/07/2024]
Abstract
BACKGROUND The N-terminal regulatory element (NRE) of Receptor-like kinases (RLKs), consisting of the juxtamembrane segment in receptor kinases (RKs) and the N-terminal extension segment in RLCKs, is a crucial component that regulates the activities of these proteins. However, the features and functions of the NRE have remained largely unexplored. Herein, we comprehensively analyze 510,233 NRE sequences in RLKs from 528 plant species, using information theory and data mining techniques to unravel their common characteristics and diversity. We also use recombinant RKs to investigate the function of the NRE in vitro. RESULTS Our findings indicate that the majority of NRE segments are around 40-80 amino acids in length and feature a serine-rich region and a 14-amino-acid consensus sequence, 'FSYEELEKAT[D/N]NF[S/D]', which contains a characteristic α-helix and ST motif that connects to the core kinase domain. This conserved signature sequence is capable of suppressing FERONIA's kinase activity. A motif discovery algorithm identifies 29 motifs with highly conserved phosphorylation sites in RK and RLCK classes, especially the motif 'VGPWKpTGLpSGQLQKAFVTGVP' in LRR-VI-2 class. Phosphorylation of an NRE motif in an LRR-VI-2 member, MDIS1, modulates the auto-phosphorylation of its co-receptor, MIK1, indicating the potential role of NRE as a 'kinase switch' in RLK activation. Furthermore, the characterization of phosphorylatable NRE motifs improves the accuracy of predicting phosphorylatable sites. CONCLUSIONS Our study provides a comprehensive dataset to investigate NRE segments from individual RLKs and enhances our understanding of the underlying mechanisms of RLK signal transduction and kinase activation processes in plant adaptation.
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Affiliation(s)
- Qiong Fu
- Bioinformatics Center, Hunan University College of Biology, Hunan, 410082, China
| | - Qian Liu
- Bioinformatics Center, Hunan University College of Biology, Hunan, 410082, China
| | - Rensen Zhang
- Bioinformatics Center, Hunan University College of Biology, Hunan, 410082, China
| | - Jia Chen
- Bioinformatics Center, Hunan University College of Biology, Hunan, 410082, China
| | - Hengchang Guo
- Shenzhen H-Great Optoelectronic Co. Ltd, Shenzhen, 518110, China
| | - Zhenhua Ming
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Science and Technology, Guangxi University, Nanning, 530004, China
| | - Feng Yu
- Bioinformatics Center, Hunan University College of Biology, Hunan, 410082, China.
| | - Heping Zheng
- Bioinformatics Center, Hunan University College of Biology, Hunan, 410082, China.
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6
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Ponvert N, Johnson MA. Synergid cell calcium oscillations refine understanding of FERONIA/LORELEI signaling during interspecific hybridization. PLANT REPRODUCTION 2024; 37:57-68. [PMID: 37934279 PMCID: PMC10879309 DOI: 10.1007/s00497-023-00483-6] [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: 08/21/2023] [Accepted: 10/18/2023] [Indexed: 11/08/2023]
Abstract
KEY MESSAGE Pollen tubes from closely related species and mutants lacking pollen tube MYB transcription factors are able to initiate FER/LRE-dependent synergid cell calcium oscillations. Reproductive isolation leads to the evolution of new species; however, the molecular mechanisms that maintain reproductive barriers between sympatric species are not well defined. In flowering plants, sperm cells are immotile and are delivered to female gametes by the pollen grain. After landing on the stigmatic surface, the pollen grain germinates a polarized extension, the pollen tube, into floral tissue. After growing via polar extension to the female gametes and shuttling its cargo of sperm cells through its cytoplasm, the pollen tube signals its arrival and identity to synergid cells that flank the egg. If signaling is successful, the pollen tube and receptive synergid cell burst, and sperm cells are released for fusion with female gametes. To better understand cell-cell recognition during reproduction and how reproductive barriers are maintained between closely related species, pollen tube-initiated synergid cell calcium ion dynamics were examined during interspecific crosses. It was observed that interspecific pollen tubes successfully trigger synergid cell calcium oscillations-a hallmark of reproductive success-but signaling fails downstream of key signaling genes and sperm are not released. This work further defines pollen tube-synergid cell signaling as a critical block to interspecific hybridization and suggests that the FERONIA/LORELEI signaling mechanism plays multiple parallel roles during pollen tube reception.
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Affiliation(s)
- Nathaniel Ponvert
- Department of Plant Sciences, University of Arizona, Tucson, AZ, 85721, USA
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, 02912, USA
| | - Mark A Johnson
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, 02912, USA.
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Zhu L, Li F, Xie T, Li Z, Tian T, An X, Wei X, Long Y, Jiao Z, Wan X. Receptor-like kinases and their signaling cascades for plant male fertility: loyal messengers. THE NEW PHYTOLOGIST 2024; 241:1421-1434. [PMID: 38174365 DOI: 10.1111/nph.19527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Accepted: 12/19/2023] [Indexed: 01/05/2024]
Abstract
Receptor-like kinases (RLKs) are evolved for plant cell-cell communications. The typical RLK protein contains an extracellular and hypervariable N-terminus to perceive various signals, a transmembrane domain to anchor into plasma membrane, and a cytoplasmic, highly conserved kinase domain to phosphorylate target proteins. To date, RLKs have manifested their significance in a myriad of biological processes during plant reproductive growth, especially in male fertility. This review first summarizes a recent update on RLKs and their interacting protein partners controlling anther and pollen development, pollen release from dehisced anther, and pollen function during pollination and fertilization. Then, regulatory networks of RLK signaling pathways are proposed. In addition, we predict RLKs in maize and rice genome, obtain homologs of well-studied RLKs from phylogeny of three subfamilies and then analyze their expression patterns in developing anthers of maize and rice to excavate potential RLKs regulating male fertility in crops. Finally, current challenges and future prospects regarding RLKs are discussed. This review will contribute to a better understanding of plant male fertility control by RLKs, creating potential male sterile lines, and inspiring innovative crop breeding methods.
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Affiliation(s)
- Lei Zhu
- Research Institute of Biology and Agriculture, Zhongzhi International Institute of Agricultural Biosciences, Shunde Innovation School, University of Science and Technology Beijing, Beijing, 100083, China
- Industry Research Institute of Biotechnology Breeding, Yili Normal University, Yining, 835000, China
| | - Fan Li
- Research Institute of Biology and Agriculture, Zhongzhi International Institute of Agricultural Biosciences, Shunde Innovation School, University of Science and Technology Beijing, Beijing, 100083, China
| | - Tianle Xie
- Research Institute of Biology and Agriculture, Zhongzhi International Institute of Agricultural Biosciences, Shunde Innovation School, University of Science and Technology Beijing, Beijing, 100083, China
| | - Ziwen Li
- Research Institute of Biology and Agriculture, Zhongzhi International Institute of Agricultural Biosciences, Shunde Innovation School, University of Science and Technology Beijing, Beijing, 100083, China
- Industry Research Institute of Biotechnology Breeding, Yili Normal University, Yining, 835000, China
| | - Tian Tian
- Research Institute of Biology and Agriculture, Zhongzhi International Institute of Agricultural Biosciences, Shunde Innovation School, University of Science and Technology Beijing, Beijing, 100083, China
| | - Xueli An
- Research Institute of Biology and Agriculture, Zhongzhi International Institute of Agricultural Biosciences, Shunde Innovation School, University of Science and Technology Beijing, Beijing, 100083, China
- Industry Research Institute of Biotechnology Breeding, Yili Normal University, Yining, 835000, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Beijing Solidwill Sci-Tech Co. Ltd, Beijing, 100192, China
| | - Xun Wei
- Research Institute of Biology and Agriculture, Zhongzhi International Institute of Agricultural Biosciences, Shunde Innovation School, University of Science and Technology Beijing, Beijing, 100083, China
- Industry Research Institute of Biotechnology Breeding, Yili Normal University, Yining, 835000, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Beijing Solidwill Sci-Tech Co. Ltd, Beijing, 100192, China
| | - Yan Long
- Research Institute of Biology and Agriculture, Zhongzhi International Institute of Agricultural Biosciences, Shunde Innovation School, University of Science and Technology Beijing, Beijing, 100083, China
- Industry Research Institute of Biotechnology Breeding, Yili Normal University, Yining, 835000, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Beijing Solidwill Sci-Tech Co. Ltd, Beijing, 100192, China
| | - Ziwei Jiao
- Industry Research Institute of Biotechnology Breeding, Yili Normal University, Yining, 835000, China
| | - Xiangyuan Wan
- Research Institute of Biology and Agriculture, Zhongzhi International Institute of Agricultural Biosciences, Shunde Innovation School, University of Science and Technology Beijing, Beijing, 100083, China
- Industry Research Institute of Biotechnology Breeding, Yili Normal University, Yining, 835000, China
- Beijing Engineering Laboratory of Main Crop Bio-Tech Breeding, Beijing International Science and Technology Cooperation Base of Bio-Tech Breeding, Beijing Solidwill Sci-Tech Co. Ltd, Beijing, 100192, China
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Liu J, Li W, Wu G, Ali K. An update on evolutionary, structural, and functional studies of receptor-like kinases in plants. FRONTIERS IN PLANT SCIENCE 2024; 15:1305599. [PMID: 38362444 PMCID: PMC10868138 DOI: 10.3389/fpls.2024.1305599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Accepted: 01/03/2024] [Indexed: 02/17/2024]
Abstract
All living organisms must develop mechanisms to cope with and adapt to new environments. The transition of plants from aquatic to terrestrial environment provided new opportunities for them to exploit additional resources but made them vulnerable to harsh and ever-changing conditions. As such, the transmembrane receptor-like kinases (RLKs) have been extensively duplicated and expanded in land plants, increasing the number of RLKs in the advanced angiosperms, thus becoming one of the largest protein families in eukaryotes. The basic structure of the RLKs consists of a variable extracellular domain (ECD), a transmembrane domain (TM), and a conserved kinase domain (KD). Their variable ECDs can perceive various kinds of ligands that activate the conserved KD through a series of auto- and trans-phosphorylation events, allowing the KDs to keep the conserved kinase activities as a molecular switch that stabilizes their intracellular signaling cascades, possibly maintaining cellular homeostasis as their advantages in different environmental conditions. The RLK signaling mechanisms may require a coreceptor and other interactors, which ultimately leads to the control of various functions of growth and development, fertilization, and immunity. Therefore, the identification of new signaling mechanisms might offer a unique insight into the regulatory mechanism of RLKs in plant development and adaptations. Here, we give an overview update of recent advances in RLKs and their signaling mechanisms.
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Affiliation(s)
| | | | - Guang Wu
- College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Khawar Ali
- College of Life Sciences, Shaanxi Normal University, Xi’an, China
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Ogawa ST, Kessler SA. Update on signaling pathways regulating polarized intercellular communication in Arabidopsis reproduction. PLANT PHYSIOLOGY 2023; 193:1732-1744. [PMID: 37453128 DOI: 10.1093/plphys/kiad414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 06/22/2023] [Accepted: 06/22/2023] [Indexed: 07/18/2023]
Affiliation(s)
- Sienna T Ogawa
- Department of Botany and Plant Pathology and Center for Plant Biology, Purdue University, West Lafayette, IN 47905, USA
| | - Sharon A Kessler
- Department of Botany and Plant Pathology and Center for Plant Biology, Purdue University, West Lafayette, IN 47905, USA
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Guo L, Huang Z, Chen X, Yang M, Yang M, Liu Z, Han X, Ma X, Wang X, Gao Q. SD-RLK28 positively regulates pollen hydration on stigmas as a PCP-Bβ receptor in Arabidopsis thaliana. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2023; 65:2395-2406. [PMID: 37485903 DOI: 10.1111/jipb.13547] [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: 01/03/2023] [Accepted: 07/24/2023] [Indexed: 07/25/2023]
Abstract
Pollen hydration on dry stigmas is strictly regulated by pollen-stigma interactions in Brassicaceae. Although several related molecular events have been described, the molecular mechanism underlying pollen hydration remains elusive. Multiple B-class pollen coat proteins (PCP-Bs) are involved in pollen hydration. Here, by analyzing the interactions of two PCP-Bs with three Arabidopsis thaliana stigmas strongly expressing S-domain receptor kinase (SD-RLK), we determined that SD-RLK28 directly interacts with PCP-Bβ. We investigated pollen hydration, pollen germination, pollen tube growth, and stigma receptivity in the sd-rlk28 and pcp-bβ mutants. PCP-Bβ acts in the pollen to regulate pollen hydration on stigmas. Loss of SD-RLK28 had no effect on pollen viability, and sd-rlk28 plants had normal life cycles without obvious defects. However, pollen hydration on sd-rlk28 stigmas was impaired and pollen tube growth in sd-rlk28 pistils was delayed. The defect in pollen hydration on sd-rlk28 stigmas was independent of changes in reactive oxygen species levels in stigmas. These results indicate that SD-RLK28 functions in the stigma as a PCP-Bβ receptor to positively regulate pollen hydration on dry stigmas.
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Affiliation(s)
- Li Guo
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
| | - Ziya Huang
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
| | - Xingyu Chen
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
| | - Min Yang
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
| | - Miaomiao Yang
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
| | - Ziwei Liu
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
| | - Xuejie Han
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
| | - Xiangjie Ma
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
| | - Xiaoli Wang
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
| | - Qiguo Gao
- College of Horticulture and Landscape Architecture, Chongqing, 400716, China
- Ministry of Education, Key Laboratory of Horticulture Science for Southern Mountainous Regions, Chongqing, 400716, China
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Meng JG, Xu YJ, Wang WQ, Yang F, Chen SY, Jia PF, Yang WC, Li HJ. Central-cell-produced attractants control fertilization recovery. Cell 2023; 186:3593-3605.e12. [PMID: 37516107 DOI: 10.1016/j.cell.2023.06.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 03/13/2023] [Accepted: 06/26/2023] [Indexed: 07/31/2023]
Abstract
Animal fertilization relies on hundreds of sperm racing toward the egg, whereas, in angiosperms, only two sperm cells are delivered by a pollen tube to the female gametes (egg cell and central cell) for double fertilization. However, unsuccessful fertilization under this one-pollen-tube design can be detrimental to seed production and plant survival. To mitigate this risk, unfertilized-gamete-controlled extra pollen tube entry has been evolved to bring more sperm cells and salvage fertilization. Despite its importance, the underlying molecular mechanism of this phenomenon remains unclear. In this study, we report that, in Arabidopsis, the central cell secretes peptides SALVAGER1 and SALVAGER2 in a directional manner to attract pollen tubes when the synergid-dependent attraction fails or is terminated by pollen tubes carrying infertile sperm cells. Moreover, loss of SALs impairs the fertilization recovery capacity of the ovules. Therefore, this research uncovers a female gamete-attraction system that salvages seed production for reproductive assurance.
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Affiliation(s)
- Jiang-Guo Meng
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yin-Jiao Xu
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Wei-Qi Wang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Fei Yang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Shu-Yan Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Peng-Fei Jia
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Wei-Cai Yang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Hong-Ju Li
- State Key Laboratory of Plant Cell and Chromosome Engineering, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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12
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Palumbo F, Draga S, Magon G, Gabelli G, Vannozzi A, Farinati S, Scariolo F, Lucchin M, Barcaccia G. MIK2 is a candidate gene of the S-locus for sporophytic self-incompatibility in chicory ( Cichorium intybus, Asteraceae). FRONTIERS IN PLANT SCIENCE 2023; 14:1204538. [PMID: 37332702 PMCID: PMC10272723 DOI: 10.3389/fpls.2023.1204538] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Accepted: 05/22/2023] [Indexed: 06/20/2023]
Abstract
The Cichorium genus offers a unique opportunity to study the sporophytic self-incompatibility (SSI) system, being composed of species characterized by highly efficient self-incompatibility (e.g., C. intybus) and complete self-compatibility (e.g., C. endivia). To this end, the chicory genome was used to map seven previously identified SSI locus-associated markers. The region containing the S-locus was therefore restricted to an ~4 M bp window on chromosome 5. Among the genes predicted in this region, MDIS1 INTERACTING RECEPTOR LIKE KINASE 2 (ciMIK2) was particularly promising as a candidate for SSI. Its ortholog in Arabidopsis (atMIK2) is involved in pollen-stigma recognition reactions, and its protein structure is similar to that of S-receptor kinase (SRK), a key component of the SSI system in the Brassica genus. The amplification and sequencing of MIK2 in chicory and endive accessions revealed two contrasting scenarios. In C. endivia, MIK2 was fully conserved even when comparing different botanical varieties (i.e., smooth and curly endive). In C. intybus, 387 polymorphic positions and 3 INDELs were identified when comparing accessions of different biotypes all belonging to the same botanical variety (i.e., radicchio). The polymorphism distribution throughout the gene was uneven, with hypervariable domains preferentially localized in the LRR-rich extracellular region, putatively identified as the receptor domain. The gene was hypothesized to be under positive selection, as the nonsynonymous mutations were more than double the synonymous ones (dN/dS = 2.17). An analogous situation was observed when analyzing the first 500 bp of the MIK2 promoter: no SNPs were observed among the endive samples, whereas 44 SNPs and 6 INDELs were detected among the chicory samples. Further analyses are needed to confirm the role of MIK2 in SSI and to demonstrate whether the 23 species-specific nonsynonymous SNPs in the CDS and/or the species-specific 10 bp-INDEL found in a CCAAT box region of the promoter are responsible for the contrasting sexual behaviors of chicory and endive.
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13
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Xie Z, Gui J, Zhong Y, Li B, Sun J, Shen J, Li L. Screening genome-editing knockouts reveals the receptor-like kinase ASX role in regulations of secondary xylem development in Populus. THE NEW PHYTOLOGIST 2023; 238:1972-1985. [PMID: 36922397 DOI: 10.1111/nph.18881] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 03/07/2023] [Indexed: 05/04/2023]
Abstract
In trees, secondary xylem development is essential for the growth of perennial stem increments. Many signals regulate the process of development, but our knowledge of the molecular components involved in signal transduction is still limited. In this study, we identified Attenuation of Secondary Xylem (ASX) knockouts by screening genome-editing knockouts of xylem-expressed receptor-like kinases (RLKs) in Populus. The ASX role in secondary xylem development in Populus was discovered using biochemical, cellular, and genomic analyses. The ASX knockout plants had abnormal secondary stem growth but had little effect on shoot apical primary growth. ASX and SOMATIC EMBRYOGENESIS RECEPTOR KINASE (SERK)2/4 were co-precipitated in developing xylem. Through their interaction, ASX is phosphorylated by SERK. Transcriptome analysis of developing xylem revealed that ASX deficiency inhibited the transcriptional activity of genes involved in xylem differentiation and secondary cell wall formation. By forming a complex, ASX and SERK may function as a signaling module for signal transduction required in the regulation of secondary xylem development in trees. This study shows that ASX, which encodes a RLKs, is required for secondary xylem development and sheds light on regulatory signals found in tree stem secondary growth.
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Affiliation(s)
- Zhi Xie
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Jinshan Gui
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- State Key Laboratory of Subtropical Silviculture, Zhejiang A&F University, Hangzhou, 311300, China
| | - Yu Zhong
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Bo Li
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
- University of the Chinese Academy of Sciences, Beijing, 100049, China
| | - Jiayan Sun
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Junhui Shen
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
| | - Laigeng Li
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai, 200032, China
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14
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Liang S, Hu ML, Lin HC, He HJ, Ning XP, Peng PP, Lu GH, Sun SL, Wang XJ, Wang YQ, Wu H. Transcriptional regulations of pollen tube reception are associated with the fertility of the ginger species Zingiber zerumbet and Zingiber corallinum. FRONTIERS IN PLANT SCIENCE 2023; 14:1099250. [PMID: 37235019 PMCID: PMC10208065 DOI: 10.3389/fpls.2023.1099250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 04/17/2023] [Indexed: 05/28/2023]
Abstract
Zingiber zerumbet and Zingiber corallinum are economically valuable species in the genus Zingiber. While Z. corallinum is sexually active, Z. zerumbet adopts clonal propagation, although it has the potential for sexual reproduction. It is unclear so far at which step during the sexual reproduction of Z. zerumbet inhibition occurs, and what are the regulatory mechanisms underlying this inhibition. Here, by comparing with the fertile species Z. corallinum using microscopy-based methods, we show that rare differences were observed in Z. zerumbet up to the point when the pollen tubes invaded the ovules. However, a significantly higher percentage of ovules still contained intact pollen tubes 24 h after pollination, suggesting pollen tube rupture was impaired in this species. Further RNA-seq analysis generated accordant results, showing that the transcription of ANX and FER, as well as genes for the partners in the same complexes (e.g., BUPS and LRE, respectively), and those putative peptide signals (e.g., RALF34), were timely activated in Z. corallinum, which ensured the pollen tubes being able to grow, reorient to ovules, and receipt by embryo sacs. In Z. zerumbet, genes for these complexes were cooperatively suppressed, which would result in the maintenance of PT integrity due to the disruption of RALF34-ANX/BUPS signaling in PT and the failure of PT reception by an active synergid due to the insufficiency of the synergid-harbored FER/LRE complex. Taking the results from the cytological and RNA-seq studies together, a model is proposed to illustrate the possible regulation mechanisms in Z. zerumbet and Z. corallinum, in which the regulations for pollen tube rupture and reception are proposed as the barrier for sexual reproduction in Z. zerumbet.
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Affiliation(s)
- Shan Liang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Ming-li Hu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, China
- School of Pharmacy, Xianning Medical College, Hubei University of Science and Technology, Xianning, China
| | - Hao-chuan Lin
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Han-jun He
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Xi-ping Ning
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Pei-pei Peng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, China
| | - Guo-hui Lu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Shu-lan Sun
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Xiao-jing Wang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Ying-qiang Wang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou, China
| | - Hong Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources, College of Life Sciences, South China Agricultural University, Guangzhou, China
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15
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Ramming A, Kappel C, Kanaoka MM, Higashiyama T, Lenhard M. Poly(A) polymerase 1 contributes to competence acquisition of pollen tubes growing through the style in Arabidopsis thaliana. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 114:651-667. [PMID: 36811355 DOI: 10.1111/tpj.16162] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2022] [Accepted: 02/16/2023] [Indexed: 05/10/2023]
Abstract
Polyadenylation of mRNAs is critical for their export from the nucleus, stability, and efficient translation. The Arabidopsis thaliana genome encodes three isoforms of canonical nuclear poly(A) polymerase (PAPS) that redundantly polyadenylate the bulk of pre-mRNAs. However, previous studies have indicated that subsets of pre-mRNAs are preferentially polyadenylated by either PAPS1 or the other two isoforms. Such functional specialization raises the possibility of an additional level of gene-expression control in plants. Here we test this notion by studying the function of PAPS1 in pollen-tube growth and guidance. Pollen tubes growing through female tissue acquire the competence to find ovules efficiently and upregulate PAPS1 expression at the transcriptional, but not detectably at the protein level compared with in vitro grown pollen tubes. Using the temperature-sensitive paps1-1 allele we show that PAPS1 activity during pollen-tube growth is required for full acquisition of competence, resulting in inefficient fertilization by paps1-1 mutant pollen tubes. While these mutant pollen tubes grow almost at the wild-type rate, they are compromised in locating the micropyles of ovules. Previously identified competence-associated genes are less expressed in paps1-1 mutant than in wild-type pollen tubes. Estimating the poly(A) tail lengths of transcripts suggests that polyadenylation by PAPS1 is associated with reduced transcript abundance. Our results therefore suggest that PAPS1 plays a key role in the acquisition of competence and underline the importance of functional specialization between PAPS isoforms throughout different developmental stages.
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Affiliation(s)
- Anna Ramming
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Str. 24-25, D-14476, Potsdam-Golm, Germany
| | - Christian Kappel
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Str. 24-25, D-14476, Potsdam-Golm, Germany
| | - Masahiro M Kanaoka
- Prefectural University of Hiroshima, Faculty of Life and Environmental Sciences, Faculty of Bioresource Sciences, Shobara, Hiroshima, Japan
| | - Tetsuya Higashiyama
- The University of Tokyo Graduate School of Science, Faculty of Science, Bunkyo-ku, Tokyo, Japan
| | - Michael Lenhard
- University of Potsdam, Institute of Biochemistry and Biology, Karl-Liebknecht-Str. 24-25, D-14476, Potsdam-Golm, Germany
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16
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Wang X, Liu X, Yi X, Wang M, Shi W, Li R, Tang W, Zhang L, Sun M, Peng X. The female germ unit is essential for pollen tube funicular guidance in Arabidopsis thaliana. THE NEW PHYTOLOGIST 2023; 238:155-168. [PMID: 36527238 DOI: 10.1111/nph.18686] [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: 09/25/2022] [Accepted: 12/13/2022] [Indexed: 06/17/2023]
Abstract
In angiosperm, two immotile sperm cells are delivered to the female gametes for fertilization by a pollen tube, which perceives guidance cues from ovules at least at two critical sites, micropyle for short-distance guidance and funiculus for comparably longer distance guidance. Compared with the great progress in understanding pollen tube micropylar guidance, little is known about the signaling for funicular guidance. Here, we show that funiculus plays an important role in pollen tube guidance and report that female gametophyte (FG) plays a critical role in funicular guidance by analysis of a 3-dehydroquinate synthase (DHQS) mutant. Loss function of DHQS in FG interrupts pollen tube funicular guidance, suggesting that the guiding signal is generated from FG. We show the evidence that the capacity of funicular guidance is established during FG functional specification after the establishment of cell identity. Specific expression of DHQS in the synergid cells, central cells, or egg cells can rescue funicular guidance defect in dhqs/+, indicating all the female germ unit cells are involved in the funicular guidance. The finding reveals that the attracting signal of pollen tube funicular guidance was generated at a site and stage manner and provides novel clue to locate and search for the signal.
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Affiliation(s)
- Xiu Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
| | - Xiangfeng Liu
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Xinlei Yi
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Min Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Wenxin Shi
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Ruiping Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Wenyue Tang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Liyao Zhang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Mengxiang Sun
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
| | - Xiongbo Peng
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, Wuhan, 430072, China
- Hubei Hongshan Laboratory, Wuhan, 430070, China
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17
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Wang L, Liang X, Dou S, Yi B, Fu T, Ma C, Dai C. Two aspartic proteases, BnaAP36s and BnaAP39s, regulate pollen tube guidance in Brassica napus. MOLECULAR BREEDING : NEW STRATEGIES IN PLANT IMPROVEMENT 2023; 43:27. [PMID: 37313529 PMCID: PMC10248713 DOI: 10.1007/s11032-023-01377-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Accepted: 03/31/2023] [Indexed: 06/15/2023]
Abstract
Pollen tube (PT) growth towards the micropyle is critical for successful double fertilization. However, the mechanism of micropyle-directed PT growth is still unclear in Brassica napus. In this study, two aspartate proteases, BnaAP36s and BnaAP39s, were identified in B. napus. BnaAP36s and BnaAP39s were localized to the plasma membrane. The homologues of BnaAP36 and BnaAP39 were highly expressed in flower organs, especially in the anther. Sextuple and double mutants of BnaAP36s and BnaAP39s were then generated using CRISPR/Cas9 technology. Compared to WT, the seed-set of cr-bnaap36 and cr-bnaap39 mutants was reduced by 50% and 60%, respectively. The reduction in seed-set was also found when cr-bnaap36 and cr-bnaap39 were used as the female parent in a reciprocal cross assay. Like WT, cr-bnaap36 and cr-bnaap39 pollen were able to germinate and the relative PTs were able to elongate in style. Approximately 36% and 33% of cr-bnaap36 and cr-bnaap39 PTs, respectively, failed to grow towards the micropyle, indicating that BnaAP36s and BnaAP39s are essential for micropyle-directed PT growth. Furthermore, Alexander's staining showed that 10% of cr-bnaap39 pollen grains were aborted, but not cr-bnaap36, suggesting that BnaAP39s may also affect microspore development. These results suggest that BnaAP36s and BnaAP39s play a critical role in the growth of micropyle-directed PTs in B. napus. Supplementary Information The online version contains supplementary material available at 10.1007/s11032-023-01377-1.
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Affiliation(s)
- Lulin Wang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Xiaomei Liang
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Shengwei Dou
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Bin Yi
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
| | - Tingdong Fu
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
| | - Chaozhi Ma
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- Hubei Hongshan Laboratory, Wuhan, 430070 China
| | - Cheng Dai
- National Key Laboratory of Crop Genetic Improvement, Huazhong Agricultural University, Wuhan, 430070 China
- Hubei Hongshan Laboratory, Wuhan, 430070 China
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18
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Yoshida N, Morinaga SI, Wakamiya T, Ishii Y, Kubota S, Hikosaka K. Does selection occur at the intermediate zone of two insufficiently isolated populations? A whole-genome analysis along an altitudinal gradient. JOURNAL OF PLANT RESEARCH 2023; 136:183-199. [PMID: 36547771 DOI: 10.1007/s10265-022-01429-1] [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: 07/03/2022] [Accepted: 12/01/2022] [Indexed: 06/17/2023]
Abstract
Adaptive divergence occurs even between insufficiently isolated populations when there is a great difference in environments between their habitats. Individuals present in an intermediate zone of the two divergent populations are expected to have an admixed genetic structure due to gene flow. A selective pressure that acts on the genetically admixed individuals may limit the gene flow and maintain the adaptive divergence. Here, we addressed a question whether selection occurs in the genetically admixed individuals between two divergent populations. Arabidopsis halleri is a perennial montane plant, which has clear phenotypic dimorphisms between highland and lowland habitats in Mt. Ibuki, central Japan. We obtained the whole-genome sequences of Arabidopsis halleri plants along an altitudinal gradient of 359-1,317 m with a high spatial resolution (mean altitudinal interval of 20 m). We found a zone where the highland and lowland genes were mixing (intermediate subpopulation). In the intermediate subpopulation, we identified 5 and 13 genome regions, which included 3 and 8 genes, that had a high frequency of alleles that are accumulated in highland and lowland subpopulations, respectively. In addition, we also found that the frequency of highland alleles of these selected genome regions was smaller in the lowland subpopulation compared with that of the non-selected regions. These results suggest that the selection in the intermediate subpopulation might limit the gene flow and contribute to the adaptive divergence between altitudes. We also identified 7 genome regions that had low heterozygote frequencies in the intermediate subpopulation. We conclude that different types of selection in addition to gene flow occur at the intermediate altitude and shape the genetic structure across altitudes.
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Affiliation(s)
- Naofumi Yoshida
- Graduate School of Life Sciences, Tohoku University, 980-8578, Aoba, Sendai, Japan.
| | - Shin-Ichi Morinaga
- Faculty of Life and Environmental Sciences, Teikyo University of Science, 120-0045, Adachi, Tokyo, Japan
| | - Takeshi Wakamiya
- Graduate School of Integrated Sciences for Life, Hiroshima University, 739-8528, Kagamiyama, Hiroshima, Higashi, Japan
| | - Yuu Ishii
- Graduate School of Life Sciences, Tohoku University, 980-8578, Aoba, Sendai, Japan
| | | | - Kouki Hikosaka
- Graduate School of Life Sciences, Tohoku University, 980-8578, Aoba, Sendai, Japan
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19
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Li Y, Guo L, Wang Z, Zhao D, Guo D, Carlson JE, Yin W, Hou X. Genome-wide association study of 23 flowering phenology traits and 4 floral agronomic traits in tree peony ( Paeonia section Moutan DC.) reveals five genes known to regulate flowering time. HORTICULTURE RESEARCH 2023; 10:uhac263. [PMID: 36793754 PMCID: PMC9926158 DOI: 10.1093/hr/uhac263] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 11/21/2022] [Indexed: 06/18/2023]
Abstract
Tree peony is a unique traditional flower in China, with large, fragrant, and colorful flowers. However, a relatively short and concentrated flowering period limits the applications and production of tree peony. A genome-wide association study (GWAS) was conducted to accelerate molecular breeding for the improvement of flowering phenology traits and ornamental phenotypes in tree peony. A diverse panel of 451 tree peony accessions was phenotyped for 23 flowering phenology traits and 4 floral agronomic traits over 3 years. Genotyping by sequencing (GBS) was used to obtain a large number of genome-wide single-nucleotide polymorphisms (SNPs) (107 050) for the panel genotypes, and 1047 candidate genes were identified by association mapping. Eighty-two related genes were observed during at least 2 years for flowering, and seven SNPs repeatedly identified for multiple flowering phenology traits over multiple years were highly significantly associated with five genes known to regulate flowering time. We validated the temporal expression profiles of these candidate genes and highlighted their possible roles in the regulation of flower bud differentiation and flowering time in tree peony. This study shows that GWAS based on GBS can be used to identify the genetic determinants of complex traits in tree peony. The results expand our understanding of flowering time control in perennial woody plants. Identification of markers closely related to these flowering phenology traits can be used in tree peony breeding programs for important agronomic traits.
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Affiliation(s)
| | | | - Zhanying Wang
- Luoyang Academy of Agricultural and Forestry Sciences, Luoyang, Henan, 471000, China
| | - Dehui Zhao
- College of Agronomy/College of Tree Peony, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - Dalong Guo
- College of Forestry, Henan University of Science and Technology, Luoyang, Henan, 471023, China
| | - John E. Carlson
- Department of Ecosystem Science and Management, Pennsylvania State University, University Park, PA 16802, USA
| | - Weilun Yin
- College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China
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20
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Yu TY, Xu CX, Li WJ, Wang B. Peptides/receptors signaling during plant fertilization. FRONTIERS IN PLANT SCIENCE 2022; 13:1090836. [PMID: 36589119 PMCID: PMC9797866 DOI: 10.3389/fpls.2022.1090836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Double fertilization is a unique and particularly complicated process for the generation alternation of angiosperms. Sperm cells of angiosperms lose the motility compared with that of gymnosperms. The sperm cells are passively carried and transported by the pollen tube for a long journey before targeting the ovule. Two sperm cells are released at the cleft between the egg and the central cell and fused with two female gametes to produce a zygote and endosperm, respectively, to accomplish the so-called double fertilization process. In this process, extensive communication and interaction occur between the male (pollen or pollen tube) and the female (ovule). It is suggested that small peptides and receptor kinases play critical roles in orchestrating this cell-cell communication. Here, we illuminate the understanding of phases in the process, such as pollen-stigma recognition, the hydration and germination of pollen grains, the growth, guidance, and rupture of tubes, the release of sperm cells, and the fusion of gametes, by reviewing increasing data recently. The roles of peptides and receptor kinases in signaling mechanisms underlying cell-cell communication were focused on, and directions of future studies were perspected in this review.
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21
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Moreira D, Lopes AL, Silva J, Ferreira MJ, Pinto SC, Mendes S, Pereira LG, Coimbra S, Pereira AM. New insights on the expression patterns of specific Arabinogalactan proteins in reproductive tissues of Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2022; 13:1083098. [PMID: 36531351 PMCID: PMC9755587 DOI: 10.3389/fpls.2022.1083098] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 11/17/2022] [Indexed: 05/25/2023]
Abstract
Arabinogalactan proteins (AGPs) are hydroxyproline-rich glycoproteins containing a high proportion of carbohydrates, widely distributed in the plant kingdom and ubiquitously present in land plants. AGPs have long been suggested to play important roles in plant reproduction and there is already evidence that specific glycoproteins are essential for male and female gametophyte development, pollen tube growth and guidance, and successful fertilization. However, the functions of many of these proteins have yet to be uncovered, mainly due to the difficulty to study individual AGPs. In this work, we generated molecular tools to analyze the expression patterns of a subgroup of individual AGPs in different Arabidopsis tissues, focusing on reproductive processes. This study focused on six AGPs: four classical AGPs (AGP7, AGP25, AGP26, AGP27), one AG peptide (AGP24) and one chimeric AGP (AGP31). These AGPs were first selected based on their predicted expression patterns along the reproductive tissues from available RNA-seq data. Promoter analysis using β-glucuronidase fusions and qPCR in different Arabidopsis tissues allowed to confirm these predictions. AGP7 was mainly expressed in female reproductive tissues, more precisely in the style, funiculus, and integuments near the micropyle region. AGP25 was found to be expressed in the style, septum and ovules with higher expression in the chalaza and funiculus tissues. AGP26 was present in the ovules and pistil valves. AGP27 was expressed in the transmitting tissue, septum and funiculus during seed development. AGP24 was expressed in pollen grains, in mature embryo sacs, with highest expression at the chalazal pole and in the micropyle. AGP31 was expressed in the mature embryo sac with highest expression at the chalaza and, occasionally, in the micropyle. For all these AGPs a co-expression analysis was performed providing new hints on its possible functions. This work confirmed the detection in Arabidopsis male and female tissues of six AGPs never studied before regarding the reproductive process. These results provide novel evidence on the possible involvement of specific AGPs in plant reproduction, as strong candidates to participate in pollen-pistil interactions in an active way, which is significant for this field of study.
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Affiliation(s)
- Diana Moreira
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- Laboratório Associado para a Química Verde (LAQV) Requimte, Sustainable Chemistry, University of Porto, Porto, Portugal
| | - Ana Lúcia Lopes
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- Biosystems and Integrative Sciences Institute – BioISI, Porto, Portugal
| | - Jessy Silva
- Laboratório Associado para a Química Verde (LAQV) Requimte, Sustainable Chemistry, University of Porto, Porto, Portugal
- Department of Biology, University of Minho, Campus de Gualtar, Braga, Portugal
| | - Maria João Ferreira
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- Laboratório Associado para a Química Verde (LAQV) Requimte, Sustainable Chemistry, University of Porto, Porto, Portugal
| | - Sara Cristina Pinto
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- Laboratório Associado para a Química Verde (LAQV) Requimte, Sustainable Chemistry, University of Porto, Porto, Portugal
| | - Sara Mendes
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- Laboratório Associado para a Química Verde (LAQV) Requimte, Sustainable Chemistry, University of Porto, Porto, Portugal
| | - Luís Gustavo Pereira
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- GreenUPorto - Sustainable Agrifood Production Research Centre, Universidade do Porto, Porto, Portugal
| | - Sílvia Coimbra
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- Laboratório Associado para a Química Verde (LAQV) Requimte, Sustainable Chemistry, University of Porto, Porto, Portugal
| | - Ana Marta Pereira
- Department of Biology, Faculty of Sciences, University of Porto, Porto, Portugal
- Laboratório Associado para a Química Verde (LAQV) Requimte, Sustainable Chemistry, University of Porto, Porto, Portugal
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22
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Yang Y, Niu Y, Chen T, Zhang H, Zhang J, Qian D, Bi M, Fan Y, An L, Xiang Y. The phospholipid flippase ALA3 regulates pollen tube growth and guidance in Arabidopsis. THE PLANT CELL 2022; 34:3718-3736. [PMID: 35861414 PMCID: PMC9516151 DOI: 10.1093/plcell/koac208] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Accepted: 07/13/2022] [Indexed: 06/15/2023]
Abstract
Pollen tube guidance regulates the growth direction and ovule targeting of pollen tubes in pistils, which is crucial for the completion of sexual reproduction in flowering plants. The Arabidopsis (Arabidopsis thaliana) pollen-specific receptor kinase (PRK) family members PRK3 and PRK6 are specifically tip-localized and essential for pollen tube growth and guidance. However, the mechanisms controlling the polar localization of PRKs at the pollen tube tip are unclear. The Arabidopsis P4-ATPase ALA3 helps establish the polar localization of apical phosphatidylserine (PS) in pollen tubes. Here, we discovered that loss of ALA3 function caused pollen tube defects in growth and ovule targeting and significantly affected the polar localization pattern of PRK3 and PRK6. Both PRK3 and PRK6 contain two polybasic clusters in the intracellular juxtamembrane domain, and they bound to PS in vitro. PRK3 and PRK6 with polybasic cluster mutations showed reduced or abolished binding to PS and altered polar localization patterns, and they failed to effectively complement the pollen tube-related phenotypes of prk mutants. These results suggest that ALA3 influences the precise localization of PRK3, PRK6, and other PRKs by regulating the distribution of PS, which plays a key role in regulating pollen tube growth and guidance.
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Affiliation(s)
| | | | - Tao Chen
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Hongkai Zhang
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Jingxia Zhang
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Dong Qian
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Mengmeng Bi
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Yuemin Fan
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
| | - Lizhe An
- MOE Key Laboratory of Cell Activities and Stress Adaptations, School of Life Sciences, Lanzhou University, Lanzhou 730000, China
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23
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Chen SY, Wang L, Jia PF, Yang WC, Sze H, Li HJ. Osmoregulation determines sperm cell geometry and integrity for double fertilization in flowering plants. MOLECULAR PLANT 2022; 15:1488-1496. [PMID: 35918896 DOI: 10.1016/j.molp.2022.07.013] [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: 02/24/2022] [Revised: 07/05/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Distinct from the motile flagellated sperm of animals and early land plants, the non-motile sperm cells of flowering plants are carried in the pollen grain to the female pistil. After pollination, a pair of sperm cells are delivered into the embryo sac by pollen tube growth and rupture. Unlike other walled plant cells with an equilibrium between internal turgor pressure and mechanical constraints of the cell walls, sperm cells wrapped inside the cytoplasm of a pollen vegetative cell have only thin and discontinuous cell walls. The sperm cells are uniquely ellipsoid in shape, although it is unclear how they maintain this shape within the pollen tubes and after release. In this study, we found that genetic disruption of three endomembrane-associated cation/H+ exchangers specifically causes sperm cells to become spheroidal in hydrated pollens of Arabidopsis. Moreover, the released mutant sperm cells are vulnerable and rupture before double fertilization, leading to failed seed set, which can be partially rescued by depletion of the sperm-expressed vacuolar water channel. These results suggest a critical role of cell-autonomous osmoregulation in adjusting the sperm cell shape for successful double fertilization in flowering plants.
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Affiliation(s)
- Shu-Yan Chen
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Lan Wang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Peng-Fei Jia
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Wei-Cai Yang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Heven Sze
- Department of Cell Biology & Molecular Genetics, University of Maryland, College Park, MD 20742, USA
| | - Hong-Ju Li
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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24
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Rodamilans B, Oliveros JC, San León D, Martínez-García PJ, Martínez-Gómez P, García JA, Rubio M. sRNA Analysis Evidenced the Involvement of Different Plant Viruses in the Activation of RNA Silencing-Related Genes and the Defensive Response Against Plum pox virus of 'GF305' Peach Grafted with 'Garrigues' Almond. PHYTOPATHOLOGY 2022; 112:2012-2021. [PMID: 35302895 DOI: 10.1094/phyto-01-22-0032-r] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Plum pox virus (PPV) causes sharka disease in Prunus trees. Peach (P. persica) trees are severely affected by PPV, and no definitive source of genetic resistance has been identified. However, previous results showed that PPV-resistant 'Garrigues' almond (P. dulcis) was able to transfer its resistance to 'GF305' peach through grafting, reducing symptoms and viral load in PPV-infected plants. A recent study tried to identify genes responsible for this effect by studying messenger RNA expression through RNA sequencing in peach and almond plants, before and after grafting and before and after PPV infection. In this work, we used the same peach and almond samples but focused the high-throughput analyses on small RNA (sRNA) expression. We studied massive sequencing data and found an interesting pattern of sRNA overexpression linked to antiviral defense genes that suggested activation of these genes followed by downregulation to basal levels. We also discovered that 'Garrigues' almond plants were infected by different plant viruses that were transferred to peach plants. The large amounts of viral sRNA found in grafted peaches indicated a strong RNA silencing antiviral response and led us to postulate that these plant viruses could be collaborating in the observed "Garrigues effect."
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Affiliation(s)
| | - Juan C Oliveros
- Department of Plant Molecular Genetics, CNB-CSIC, 28049 Madrid, Spain
| | - David San León
- Department of Plant Molecular Genetics, CNB-CSIC, 28049 Madrid, Spain
| | | | | | - Juan A García
- Department of Plant Molecular Genetics, CNB-CSIC, 28049 Madrid, Spain
| | - Manuel Rubio
- Department of Plant Breeding, CEBAS-CSIC, 30100 Murcia, Spain
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25
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Yu SX, Jiang YT, Lin WH. Ovule initiation: the essential step controlling offspring number in Arabidopsis. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2022; 64:1469-1486. [PMID: 35713236 DOI: 10.1111/jipb.13314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 06/14/2022] [Indexed: 06/15/2023]
Abstract
Seed is the offspring of angiosperms. Plants produce large numbers of seeds to ensure effective reproduction and survival in varying environments. Ovule is a fundamentally important organ and is the precursor of the seed. In Arabidopsis and other plants characterized by multi-ovulate ovaries, ovule initiation determines the maximal ovule number, thus greatly affecting seed number per fruit and seed yield. Investigating the regulatory mechanism of ovule initiation has both scientific and economic significance. However, the genetic and molecular basis underlying ovule initiation remains unclear due to technological limitations. Very recently, rules governing the multiple ovules initiation from one placenta have been identified, the individual functions and crosstalk of phytohormones in regulating ovule initiation have been further characterized, and new regulators of ovule boundary are reported, therefore expanding the understanding of this field. In this review, we present an overview of current knowledge in ovule initiation and summarize the significance of ovule initiation in regulating the number of plant offspring, as well as raise insights for the future study in this field that provide potential routes for the improvement of crop yield.
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Affiliation(s)
- Shi-Xia Yu
- The Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
- Shanghai Collaborative Innovation Center of Agri-Seeds/Joint Center for Single Cell Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
- School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yu-Tong Jiang
- The Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Wen-Hui Lin
- The Joint International Research Laboratory of Metabolic and Developmental Sciences, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, 200240, China
- Shanghai Collaborative Innovation Center of Agri-Seeds/Joint Center for Single Cell Biology, Shanghai Jiao Tong University, Shanghai, 200240, China
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26
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Rzemieniewski J, Stegmann M. Regulation of pattern-triggered immunity and growth by phytocytokines. CURRENT OPINION IN PLANT BIOLOGY 2022; 68:102230. [PMID: 35588597 DOI: 10.1016/j.pbi.2022.102230] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 04/05/2022] [Accepted: 04/05/2022] [Indexed: 06/15/2023]
Abstract
Endogenous signalling peptides play diverse roles during plant growth, development and stress responses. Research in recent years has unravelled peptides with previously known growth-regulatory function as immune-modulatory agents that fine-tune pattern-triggered immunity (PTI). Moreover, peptides that are long known as endogenous danger signals were recently implicated in growth and development. In analogy to metazoan systems these peptides are referred to as phytocytokines. In this review we will highlight recent progress made on our understanding of phytocytokines simultaneously regulating growth and PTI which shows the complex interplay of peptide signalling pathways regulating multiple aspects of a plant's life.
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Affiliation(s)
- Jakub Rzemieniewski
- Phytopathology, School of Life Sciences, Technical University of Munich, Freising, Germany
| | - Martin Stegmann
- Phytopathology, School of Life Sciences, Technical University of Munich, Freising, Germany.
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27
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Sageman-Furnas K, Nurmi M, Contag M, Plötner B, Alseekh S, Wiszniewski A, Fernie AR, Smith LM, Laitinen RAE. A. thaliana Hybrids Develop Growth Abnormalities through Integration of Stress, Hormone and Growth Signaling. PLANT & CELL PHYSIOLOGY 2022; 63:944-954. [PMID: 35460255 PMCID: PMC9282726 DOI: 10.1093/pcp/pcac056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 04/20/2022] [Accepted: 04/22/2022] [Indexed: 06/14/2023]
Abstract
Hybrids between Arabidopsis thaliana accessions are important in revealing the consequences of epistatic interactions in plants. F1 hybrids between the A. thaliana accessions displaying either defense or developmental phenotypes have been revealing the roles of the underlying epistatic genes. The interaction of two naturally occurring alleles of the OUTGROWTH-ASSOCIATED KINASE (OAK) gene in Sha and Lag2-2, previously shown to cause a similar phenotype in a different allelic combination in A. thaliana, was required for the hybrid phenotype. Outgrowth formation in the hybrids was associated with reduced levels of salicylic acid, jasmonic acid and abscisic acid in petioles and the application of these hormones mitigated the formation of the outgrowths. Moreover, different abiotic stresses were found to mitigate the outgrowth phenotype. The involvement of stress and hormone signaling in outgrowth formation was supported by a global transcriptome analysis, which additionally revealed that TCP1, a transcription factor known to regulate leaf growth and symmetry, was downregulated in the outgrowth tissue. These results demonstrate that a combination of natural alleles of OAK regulates growth and development through the integration of hormone and stress signals and highlight the importance of natural variation as a resource to discover the function of gene variants that are not present in the most studied accessions of A. thaliana.
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Affiliation(s)
- Katelyn Sageman-Furnas
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm 14476, Germany
| | - Markus Nurmi
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm 14476, Germany
| | - Meike Contag
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm 14476, Germany
| | - Björn Plötner
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm 14476, Germany
| | - Saleh Alseekh
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm 14476, Germany
- Center of Plant Systems Biology and Biotechnology, Plovdiv 4000, Bulgaria
| | - Andrew Wiszniewski
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm 14476, Germany
| | - Alisdair R Fernie
- Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, Potsdam-Golm 14476, Germany
| | - Lisa M Smith
- School of Biosciences and Institute for Sustainable Food, University of Sheffield, Western Bank, Sheffield S10 2TN, UK
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28
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Xue Y, Meng JG, Jia PF, Zhang ZR, Li HJ, Yang WC. POD1-SUN-CRT3 chaperone complex guards the ER sorting of LRR receptor kinases in Arabidopsis. Nat Commun 2022; 13:2703. [PMID: 35577772 PMCID: PMC9110389 DOI: 10.1038/s41467-022-30179-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 04/20/2022] [Indexed: 11/09/2022] Open
Abstract
Protein sorting in the secretory pathway is essential for cellular compartmentalization and homeostasis in eukaryotic cells. The endoplasmic reticulum (ER) is the biosynthetic and folding factory of secretory cargo proteins. The cargo transport from the ER to the Golgi is highly selective, but the molecular mechanism for the sorting specificity is unclear. Here, we report that three ER membrane localized proteins, SUN3, SUN4 and SUN5, regulate ER sorting of leucine-rich repeat receptor kinases (LRR-RKs) to the plasma membrane. The triple mutant sun3/4/5 displays mis-sorting of these cargo proteins to acidic compartments and therefore impairs the growth of pollen tubes and the whole plant. Furthermore, the extracellular LRR domain of LRR-RKs is responsible for the correct sorting. Together, this study reports a mechanism that is important for the sorting of cell surface receptors. Cargo transport from the ER to the Golgi is highly selective. Here the authors identify three secretory pathway localized proteins that regulate ER sorting of receptor kinases in Arabidopsis and are required to support pollen tube growth.
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29
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Zhao ML, Zhou ZF, Chen MS, Xu CJ, Xu ZF. An ortholog of the MADS-box gene SEPALLATA3 regulates stamen development in the woody plant Jatropha curcas. PLANTA 2022; 255:111. [PMID: 35478059 DOI: 10.1007/s00425-022-03886-3] [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: 11/14/2021] [Accepted: 03/28/2022] [Indexed: 06/14/2023]
Abstract
Overexpression of JcSEP3 causes defective stamen development in Jatropha curcas, in which brassinosteroid and gibberellin signaling pathways may be involved. SEPALLATAs (SEPs), the class E genes of the ABCE model, are required for floral organ determination. In this study, we investigated the role of the JcSEP3 gene in floral organ development in the woody plant Jatropha curcas. Transgenic Jatropha plants overexpressing JcSEP3 displayed abnormal phenotypes such as deficient anthers and pollen, as well as free stamen filaments, whereas JcSEP3-RNA interference (RNAi) transgenic plants had no obvious phenotypic changes, suggesting that JcSEP3 is redundant with other JcSEP genes in Jatropha. Moreover, we compared the transcriptomes of wild-type plants, JcSEP3-overexpressing, and JcSEP3-RNAi transgenic plants. In the JcSEP3-overexpressing transgenic plants, we discovered 25 upregulated genes involved in anther and pollen development, as well as 12 induced genes in brassinosteroid (BR) and gibberellin (GA) signaling pathways. These results suggest that JcSEP3 directly or indirectly regulates stamen development, concomitant with the regulation of BR and GA signaling pathways. Our findings help to understand the roles of SEP genes in stamen development in perennial woody plants.
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Affiliation(s)
- Mei-Li Zhao
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Menglun, Mengla, 666303, Yunnan, China
| | - Zhi-Fang Zhou
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Menglun, Mengla, 666303, Yunnan, China
| | - Mao-Sheng Chen
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Menglun, Mengla, 666303, Yunnan, China.
- Center of Economic Botany, Core Botanical Gardens, Chinese Academy of Sciences, Menglun, Mengla, 666303, Yunnan, China.
| | - Chuan-Jia Xu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Menglun, Mengla, 666303, Yunnan, China
| | - Zeng-Fu Xu
- CAS Key Laboratory of Tropical Plant Resources and Sustainable Use, Xishuangbanna Tropical Botanical Garden, The Innovative Academy of Seed Design, Chinese Academy of Sciences, Menglun, Mengla, 666303, Yunnan, China.
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, College of Forestry, Guangxi University, Nanning, 530004, Guangxi, China.
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30
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Faizah R, Putranto RA, Raharti VR, Supena N, Sukma D, Budiani A, Wening S, Sudarsono S. Defense response changes in roots of oil palm (Elaeis guineensis Jacq.) seedlings after internal symptoms of Ganoderma boninense Pat. infection. BMC PLANT BIOLOGY 2022; 22:139. [PMID: 35331141 PMCID: PMC8944027 DOI: 10.1186/s12870-022-03493-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Accepted: 02/25/2022] [Indexed: 05/14/2023]
Abstract
BACKGROUND The development of basal stem rot (BSR) disease in oil palm is associated with lignin during vegetative growth and salicylic acid (SA) biosynthesis. The increase in the lignin content, SA accumulation, growth, and root biomass could indicate the resistance of oil palm seedlings to BSR disease. Therefore, although there are many studies on the interactions between the Ganoderma boninense and oil palm, research on evaluation of physiological processes, biochemistry, and molecules occurring during early internal symptoms of BSR in roots of oil palm (Elaeis guineensis Jacq.) are essential. RESULTS Ganoderma boninense inoculation indicated that C01, C02, and C05 seedlings were susceptible, while the other three seedlings, C03, C07, and C08, were resistant based on Ganoderma Disease Index (GDI). Infection by G. boninense in the most susceptible seedlings C05 reduced fresh weight of roots (FW) by 9.0%, and lignin content by 10.9%. The most resistant seedlings C08 were reduced by only 8.4%, and 0.2% regarding their fresh weight and lignin content, respectively. BSR disease induced SA accumulation in the most susceptible C08 and decreased peroxidase (PRX) enzyme (EC 1.11.1.7) activities in root tissues of oil palm seedlings except C07 and C08 where PRX activities remained high in the 4 months after planting. Infection with G. boninense also increased glutathione S-transferase U19-like (EgGSTU19) gene expression in the root tissues of susceptible seedlings, while laccase-24 (EgLCC24) gene expression was associated with resistance against BSR disease. Based on the relative expression of twelve genes, two genes are categorized as receptors (EgWAKL5, EgMIK1), two genes as biosynthesis signal transduction compound (EgOPR5, EgACO1), five genes as defense responses (EgROMT, EgSOT12, EgLCC24, EgGLT3, EgGSTU19), and one gene as trans-resveratrol di-O-methyltransferase-like (EgRNaseIII) predicted related to BSR infection. While two other genes remain unknown (EgUnk1, EgUnk2). CONCLUSIONS Ganoderma infection-induced SA accumulation and lignification in resistant accessions promote the seedlings root biomass. Oil palm seedlings have a synergistic physical, biochemical, and molecular defense mechanism to the BSR disease. The utilization of nucleotide-based molecular markers using EgLCC24 gene is able to detect resistant oil palm seedlings to G. boninense.
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Affiliation(s)
- Rokhana Faizah
- Plant Breeding and Biotechnology Study Program, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University (IPB University), Jl. Meranti, Dramaga Campus, Bogor, 16680, Indonesia.
- Indonesian Oil Palm Research Institute, Jl. Brigjen Katamso No. 51, Medan, North Sumatera, 20158, Indonesia.
| | - Riza Arief Putranto
- Indonesian Research Institute for Biotechnology and Bioindustry, Jl. Taman Kencana No. 1, Bogor, 16128, Indonesia
- PT Riset Perkebunan Nusantara (Nusantara Estate Crops Research), Jl. Salak no. 1A, Bogor, 16128, Indonesia
| | - Vivi Restu Raharti
- Department of Agrotechnology, Agriculture Faculty, Jenderal Soedirman University, Jl. Dr. Soeparno No. 63, Karangwangkal, North Purwokerto, Central Java, 53122, Indonesia
| | - Nanang Supena
- Indonesian Oil Palm Research Institute, Jl. Brigjen Katamso No. 51, Medan, North Sumatera, 20158, Indonesia
| | - Dewi Sukma
- Plant Breeding and Biotechnology Study Program, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University (IPB University), Jl. Meranti, Dramaga Campus, Bogor, 16680, Indonesia
| | - Asmini Budiani
- Indonesian Research Institute for Biotechnology and Bioindustry, Jl. Taman Kencana No. 1, Bogor, 16128, Indonesia
| | - Sri Wening
- Indonesian Oil Palm Research Institute, Jl. Brigjen Katamso No. 51, Medan, North Sumatera, 20158, Indonesia
| | - Sudarsono Sudarsono
- Plant Breeding and Biotechnology Study Program, Department of Agronomy and Horticulture, Faculty of Agriculture, Bogor Agricultural University (IPB University), Jl. Meranti, Dramaga Campus, Bogor, 16680, Indonesia
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Hou S, Zhao T, Yang Z, Liang L, Ma W, Wang G, Ma Q. Stigmatic Transcriptome Analysis of Self-Incompatible and Compatible Pollination in Corylus heterophylla Fisch. × Corylus avellana L. FRONTIERS IN PLANT SCIENCE 2022; 13:800768. [PMID: 35300011 PMCID: PMC8921776 DOI: 10.3389/fpls.2022.800768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Accepted: 01/31/2022] [Indexed: 06/14/2023]
Abstract
Self-incompatibility (SI) protects plants from inbreeding depression due to self-pollination and promotes the outcrossing process to maintain a high degree of heterozygosity during evolution. Corylus is an important woody oil and nut species that shows sporophytic SI (SSI). Yet the molecular mechanism of SI in Corylus remains largely unknown. Here we conducted self- ("Dawei" × "Dawei") and cross-pollination ("Dawei" × "Liaozhen No. 7") experiments and then performed an RNA-Seq analysis to investigate the mechanism of pollen-stigma interactions and identify those genes that may be responsible for SSI in Corylus. We uncovered 19,163 up- and 13,314 downregulated genes from the comparison of different pollination treatments. These differentially expressed genes (DEGs) were significantly enriched in plant-pathogen interaction, plant hormone signal transduction, and MAPK signaling pathway-plant. We found many notable genes potentially involved in pollen-stigma interactions and SSI mechanisms, including genes encoding receptor-like protein kinases (RLK), calcium-related genes, disease-resistance genes, and WRKY transcription factors. Four upregulated and five downregulated DEGs were consistently identified in those comparison groups involving self-incompatible pollination, suggesting they had important roles in pollen-pistil interactions. We further identified the S-locus region of the Corylus heterophylla genome based on molecular marker location. This predicted S-locus contains 38 genes, of which 8 share the same functional annotation as the S-locus genes of Corylus avellana: two PIX7 homologous genes (EVM0002129 and EVM0025536), three MIK2 homologous genes (EVM0002422, EVM0005666, and EVM0009820), one aldose 1-epimerase (EVM0002095), one 3-dehydroquinate synthase II (EVM0021283), and one At3g28850 homologous gene (EVM0016149). By characterizing the pistil process during the early postpollination phase via transcriptomic analysis, this study provides new knowledge and lays the foundation for subsequent analyses of pollen-pistil interactions.
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Affiliation(s)
- Sihao Hou
- State Key Laboratory of Tree Genetics and Breeding, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of the National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, China
- National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, China
| | - Tiantian Zhao
- State Key Laboratory of Tree Genetics and Breeding, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of the National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, China
- National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, China
| | - Zhen Yang
- State Key Laboratory of Tree Genetics and Breeding, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of the National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, China
- National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, China
| | - Lisong Liang
- State Key Laboratory of Tree Genetics and Breeding, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of the National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, China
- National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, China
| | - Wenxu Ma
- State Key Laboratory of Tree Genetics and Breeding, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of the National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, China
- National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, China
| | - Guixi Wang
- State Key Laboratory of Tree Genetics and Breeding, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of the National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, China
- National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, China
| | - Qinghua Ma
- State Key Laboratory of Tree Genetics and Breeding, Beijing, China
- Key Laboratory of Tree Breeding and Cultivation of the National Forestry and Grassland Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing, China
- Hazelnut Engineering and Technical Research Center of the State Forestry and Grassland Administration, Beijing, China
- National Forestry and Grassland Innovation Alliance on Hazelnut, Beijing, China
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Nagae TT, Takeuchi H, Higashiyama T. Quantification of Species-Preferential Micropylar Chemoattraction in Arabidopsis by Fluorescein Diacetate Staining of Pollen Tubes. Int J Mol Sci 2022; 23:ijms23052722. [PMID: 35269862 PMCID: PMC8910611 DOI: 10.3390/ijms23052722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/25/2022] [Accepted: 02/25/2022] [Indexed: 11/22/2022] Open
Abstract
Sexual reproduction between males and females of the same species is essential for species maintenance. Ovular micropylar guidance, the last step of pollen tube guidance in angiosperms, contributes to species-preferential reproduction. Previous studies using semi-in vivo attraction assays showed that species-preferential attractant peptides are secreted from the ovule through its micropyle. However, conventional semi-in vivo assays usually depend on transgenic pollen tubes expressing a fluorescent protein to determine whether the tubes are attracted to the ovule to precisely penetrate the micropyle. Here, we found that fluorescein diacetate (FDA) staining was suitable for evaluating the micropylar guidance rate of non-transgenic pollen tubes in semi-in vivo conditions. Micropylar guidance was quantified for ovules and pollen tubes of Arabidopsis thaliana and Arabidopsis lyrata by combining FDA staining with modified semi-in vivo assays. Our results using the simple staining method showed that the ovules of each species secrete species-preferential attractants, and that pollen tubes respond more strongly to attractants of their own species compared with those of closely related species. LURE-type CRP810 attractant peptides were shown to be responsible for micropylar attraction of A. thaliana in the semi-in vivo assay. The POLLEN-SPECIFIC RECEPTOR-LIKE KINASE 6 (PRK6) receptor for LURE1, as well as an unidentified receptor for other LURE-type attractants, are involved in the species-preferential response of these two Arabidopsis species.
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Affiliation(s)
- Takuya T. Nagae
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan;
| | - Hidenori Takeuchi
- Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan;
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
| | - Tetsuya Higashiyama
- Division of Biological Science, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan;
- Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8601, Japan
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo 113-0033, Japan
- Correspondence:
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Xu K, Jourquin J, Njo MF, Nguyen L, Beeckman T, Fernandez AI. The Phloem Intercalated With Xylem-Correlated 3 Receptor-Like Kinase Constitutively Interacts With Brassinosteroid Insensitive 1-Associated Receptor Kinase 1 and Is Involved in Vascular Development in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2022; 12:706633. [PMID: 35087541 PMCID: PMC8786740 DOI: 10.3389/fpls.2021.706633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Accepted: 12/13/2021] [Indexed: 06/14/2023]
Abstract
Leucine-rich repeat receptor-like kinases (LRR-RLKs) play fundamental roles in cell-to-cell and plant-environment communication. LRR-RLKs can function as receptors perceiving endogenous or external ligands, or as coreceptors, which stabilize the complex, and enhance transduction of the intracellular signal. The LRR-RLK BAK1 is a coreceptor for different developmental and immunity pathways. In this article, we identified PXY-CORRELATED 3 (PXC3) as a BAK1-interacting LRR-RLK, which was previously reported to be transcribed in vascular tissues co-expressed with PHLOEM INTERCALATED WITH XYLEM (PXY), the receptor of the TDIF/CLE41 peptide. Characterization of pxc3 loss-of-function mutants revealed reduced hypocotyl stele width and vascular cells compared to wild type, indicating that PXC3 plays a role in the vascular development in Arabidopsis. Furthermore, our data suggest that PXC3 might function as a positive regulator of the CLE41/TDIF-TDR/PXY signaling pathway.
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Affiliation(s)
- Ke Xu
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Joris Jourquin
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Maria Fransiska Njo
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Long Nguyen
- Screening Core, VIB, Ghent, Belgium
- Centre for Bioassay Development and Screening (C-BIOS), Ghent University, Ghent, Belgium
| | - Tom Beeckman
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
| | - Ana Ibis Fernandez
- Department of Plant Biotechnology and Bioinformatics, Ghent University, Ghent, Belgium
- VIB Center for Plant Systems Biology, Ghent, Belgium
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Zhou X, Zheng Y, Wang L, Li H, Guo Y, Li M, Sun MX, Zhao P. SYP72 interacts with the mechanosensitive channel MSL8 to protect pollen from hypoosmotic shock during hydration. Nat Commun 2022; 13:73. [PMID: 35013278 PMCID: PMC8748641 DOI: 10.1038/s41467-021-27757-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 12/10/2021] [Indexed: 11/29/2022] Open
Abstract
In flowering plants, hydration of desiccated pollen grains on stigma is a prerequisite for pollen germination, during which pollen increase markedly in volume through water uptake, requiring them to survive hypoosmotic shock to maintain cellular integrity. However, the mechanisms behind the adaptation of pollen to this hypoosmotic challenge are largely unknown. Here, we identify the Qc-SNARE protein SYP72, which is specifically expressed in male gametophytes, as a critical regulator of pollen survival upon hypoosmotic shock during hydration. SYP72 interacts with the MSCS-LIKE 8 (MSL8) and is required for its localization to the plasma membrane. Intraspecies and interspecies genetic complementation experiments reveal that SYP72 paralogs and orthologs from green algae to angiosperms display conserved molecular functions and rescue the defects of Arabidopsis syp72 mutant pollen facing hypoosmotic shock following hydration. Our findings demonstrate a critical role for SYP72 in pollen resistance to hypoosmotic shock through the MSL8 cascade during pollen hydration. Pollen grains undergo desiccation and rehydration prior to germination and must survive osmotic shock. Here the authors show that the Qc-SNARE protein SYP72 is required for the localization of the mechanosensitive channel MSL8 at the plasma membrane and to maintain viability during rehydration.
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Affiliation(s)
- Xuemei Zhou
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, 430072, Wuhan, China.,College of Life Sciences, South-Central University for Nationalities, 430074, Wuhan, China
| | - Yifan Zheng
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, 430072, Wuhan, China
| | - Ling Wang
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, 430072, Wuhan, China
| | - Haiming Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, 430072, Wuhan, China
| | - Yingying Guo
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, 430072, Wuhan, China
| | - Mengdi Li
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, 430072, Wuhan, China
| | - Meng-Xiang Sun
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, 430072, Wuhan, China
| | - Peng Zhao
- State Key Laboratory of Hybrid Rice, College of Life Sciences, Wuhan University, 430072, Wuhan, China. .,Hubei Hongshan Laboratory, 430070, Wuhan, China.
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Cui Y, Lu X, Gou X. Receptor-like protein kinases in plant reproduction: Current understanding and future perspectives. PLANT COMMUNICATIONS 2022; 3:100273. [PMID: 35059634 PMCID: PMC8760141 DOI: 10.1016/j.xplc.2021.100273] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Revised: 12/09/2021] [Accepted: 12/28/2021] [Indexed: 05/30/2023]
Abstract
Reproduction is a crucial process in the life span of flowering plants, and directly affects human basic requirements in agriculture, such as grain yield and quality. Typical receptor-like protein kinases (RLKs) are a large family of membrane proteins sensing extracellular signals to regulate plant growth, development, and stress responses. In Arabidopsis thaliana and other plant species, RLK-mediated signaling pathways play essential roles in regulating the reproductive process by sensing different ligand signals. Molecular understanding of the reproductive process is vital from the perspective of controlling male and female fertility. Here, we summarize the roles of RLKs during plant reproduction at the genetic and molecular levels, including RLK-mediated floral organ development, ovule and anther development, and embryogenesis. In addition, the possible molecular regulatory patterns of those RLKs with unrevealed mechanisms during reproductive development are discussed. We also point out the thought-provoking questions raised by the research on these plant RLKs during reproduction for future investigation.
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36
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Gigli-Bisceglia N, Testerink C. Fighting salt or enemies: shared perception and signaling strategies. CURRENT OPINION IN PLANT BIOLOGY 2021; 64:102120. [PMID: 34856479 DOI: 10.1016/j.pbi.2021.102120] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 09/07/2021] [Accepted: 09/15/2021] [Indexed: 06/13/2023]
Abstract
Plants react to a myriad of biotic and abiotic environmental signals through specific cellular mechanisms required for survival under stress. Although pathogen perception has been widely studied and characterized, salt stress perception and signaling remain largely elusive. Recent observations, obtained in the model plant Arabidopsis thaliana, show that perception of specific features of pathogens also allows plants to mount salt stress resilience pathways, highlighting the possibility that salt sensing and pathogen perception mechanisms partially overlap. We discuss these overlapping strategies and examine the emerging role of A. thaliana cell wall and plasma membrane components in activating both salt- and pathogen-induced responses, as part of exquisite mechanisms underlying perception of damage and danger. This knowledge helps understanding the complexity of plant responses to pathogens and salinity, leading to new hypotheses that could explain why plants evolved similar strategies to respond to these, at first sight, very different types of stimuli.
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Affiliation(s)
- Nora Gigli-Bisceglia
- Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, 6708 PB, the Netherlands.
| | - Christa Testerink
- Laboratory of Plant Physiology, Wageningen University and Research, Wageningen, 6708 PB, the Netherlands.
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Identification and Analysis of Genes Involved in Double Fertilization in Rice. Int J Mol Sci 2021; 22:ijms222312850. [PMID: 34884656 PMCID: PMC8657449 DOI: 10.3390/ijms222312850] [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: 11/10/2021] [Revised: 11/24/2021] [Accepted: 11/24/2021] [Indexed: 12/27/2022] Open
Abstract
Double fertilization is a key determinant of grain yield, and the failure of fertilization during hybridization is one important reason for reproductive isolation. Therefore, fertilization has a very important role in the production of high-yield and well-quality hybrid of rice. Here, we used RNA sequencing technology to study the change of the transcriptome during double fertilization with the help of the mutant fertilization barrier (feb) that failed to finish fertilization process and led to seed abortion. The results showed that 1669 genes were related to the guided growth of pollen tubes, 332 genes were involved in the recognition and fusion of the male–female gametes, and 430 genes were associated with zygote formation and early free endosperm nuclear division. Among them, the genes related to carbohydrate metabolism; signal transduction pathways were enriched in the guided growth of pollen tubes, the genes involved in the photosynthesis; fatty acid synthesis pathways were activated by the recognition and fusion of the male–female gametes; and the cell cycle-related genes might play an essential role in zygote formation and early endosperm nuclear division. Furthermore, among the 1669 pollen tube-related genes, it was found that 7 arabinogalactan proteins (AGPs), 1 cysteine-rich peptide (CRP), and 15 receptor-like kinases (RLKs) were specifically expressed in anther, while 2 AGPs, 7 CRPs, and 5 RLKs in pistil, showing obvious unequal distribution which implied they might play different roles in anther and pistil during fertilization. These studies laid a solid foundation for revealing double fertilization mechanism of rice and for the follow-up investigation.
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Ju Y, Yuan J, Jones DS, Zhang W, Staiger CJ, Kessler SA. Polarized NORTIA accumulation in response to pollen tube arrival at synergids promotes fertilization. Dev Cell 2021; 56:2938-2951.e6. [PMID: 34672969 DOI: 10.1016/j.devcel.2021.09.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 07/28/2021] [Accepted: 09/28/2021] [Indexed: 11/30/2022]
Abstract
Signal-mediated regulation of protein trafficking is an elegant mechanism for controlling the delivery of molecules to a precise location for critical signaling events that occur over short time frames. During plant reproduction, the FERONIA receptor complex is critical for intercellular communication that leads to gamete delivery; however, the impact of the FERONIA signal transduction cascade on protein trafficking in synergid cells remains unknown. Live imaging of pollen tube reception has revealed that a key outcome of FERONIA signaling is polar accumulation of the MLO protein NORTIA at the filiform apparatus in response to signals from an arriving pollen tube. Artificial delivery of NORTIA to the filiform apparatus is sufficient to bypass the FERONIA signaling pathway and to promote interspecific pollen tube reception. We propose that polar accumulation of NORTIA leads to the production of a secondary booster signal to ensure that pollen tubes burst to deliver the sperm cells for double fertilization.
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Affiliation(s)
- Yan Ju
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA
| | - Jing Yuan
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA
| | - Daniel S Jones
- Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK 73019, USA
| | - Weiwei Zhang
- Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA; Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Christopher J Staiger
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA; Department of Biological Sciences, Purdue University, West Lafayette, IN 47907, USA
| | - Sharon A Kessler
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, IN 47907, USA; Purdue Center for Plant Biology, Purdue University, West Lafayette, IN 47907, USA.
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Kou X, Sun J, Wang P, Wang D, Cao P, Lin J, Chang Y, Zhang S, Wu J. PbrRALF2-elicited reactive oxygen species signaling is mediated by the PbrCrRLK1L13-PbrMPK18 module in pear pollen tubes. HORTICULTURE RESEARCH 2021; 8:222. [PMID: 34608125 PMCID: PMC8490453 DOI: 10.1038/s41438-021-00684-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/26/2021] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
Rapid alkalinization factors (RALFs) are cysteine-rich peptides that play important roles in a variety of biological processes, such as cell elongation and immune signaling. Recent studies in Arabidopsis have shown that RALFs regulate pollen tube growth via plasma membrane receptor-like kinases (RLKs). However, the downstream signal transduction mechanisms of RLKs in pollen tubes are unknown. Here, we identified PbrRALF2, a pear (Pyrus bretschneideri) pollen RALF peptide that inhibits pollen tube growth. We found that PbrRALF2 interacts with a malectin-like domain-containing RLK, PbrCrRLK1L13. The relative affinity between PbrRALF2 and PbrCrRLK1L13 was at the submicromolar level, which is consistent with the values of ligand-receptor kinase pairs and the physiological concentration for PbrRALF2-mediated inhibition of pollen tube growth. After binding to its extracellular domain, PbrRALF2 activated the phosphorylation of PbrCrRLK1L13 in a dose-dependent manner. We further showed that the MAP kinase PbrMPK18 is a downstream target of PbrCrRLK1L13 that mediates PbrRALF2-elicited reactive oxygen species (ROS) production. The excessive accumulation of ROS inhibits pollen tube growth. We show that MPK acts as a mediator for CrRLK1L to stimulate ROS production, which might represent a general mechanism by which RALF and CrRLK1L function in signaling pathways.
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Affiliation(s)
- Xiaobing Kou
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, 210095, Nanjing, China
| | - Jiangmei Sun
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, 210095, Nanjing, China
| | - Peng Wang
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, 210095, Nanjing, China
| | - Danqi Wang
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, 210095, Nanjing, China
| | - Peng Cao
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, 210095, Nanjing, China
| | - Jing Lin
- Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, 210014, Nanjing, China
| | - Youhong Chang
- Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, 210014, Nanjing, China
| | - Shaoling Zhang
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, 210095, Nanjing, China
| | - Juyou Wu
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, 210095, Nanjing, China.
- Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, 210014, Nanjing, China.
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Hou S, Liu D, Huang S, Luo D, Liu Z, Xiang Q, Wang P, Mu R, Han Z, Chen S, Chai J, Shan L, He P. The Arabidopsis MIK2 receptor elicits immunity by sensing a conserved signature from phytocytokines and microbes. Nat Commun 2021; 12:5494. [PMID: 34535661 PMCID: PMC8448819 DOI: 10.1038/s41467-021-25580-w] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 08/17/2021] [Indexed: 11/09/2022] Open
Abstract
Sessile plants encode a large number of small peptides and cell surface-resident receptor kinases, most of which have unknown functions. Here, we report that the Arabidopsis receptor kinase MALE DISCOVERER 1-INTERACTING RECEPTOR-LIKE KINASE 2 (MIK2) recognizes the conserved signature motif of SERINE-RICH ENDOGENOUS PEPTIDEs (SCOOPs) from Brassicaceae plants as well as proteins present in fungal Fusarium spp. and bacterial Comamonadaceae, and elicits various immune responses. SCOOP signature peptides trigger immune responses and altered root development in a MIK2-dependent manner with a sub-nanomolar sensitivity. SCOOP12 directly binds to the extracellular leucine-rich repeat domain of MIK2 in vivo and in vitro, indicating that MIK2 is the receptor of SCOOP peptides. Perception of SCOOP peptides induces the association of MIK2 and the coreceptors SOMATIC EMBRYOGENESIS RECEPTOR KINASE 3 (SERK3) and SERK4 and relays the signaling through the cytosolic receptor-like kinases BOTRYTIS-INDUCED KINASE 1 (BIK1) and AVRPPHB SUSCEPTIBLE1 (PBS1)-LIKE 1 (PBL1). Our study identifies a plant receptor that bears a dual role in sensing the conserved peptide motif from phytocytokines and microbial proteins via a convergent signaling relay to ensure a robust immune response. Peptide signals generated during plant microbe interactions can trigger immune responses in plants. Here the authors show that SCOOP12, a member of a family of peptides present in Brassicaceae plants, and SCOOP12-like motifs in Fusarium fungi, can trigger immune responses following perception by the MIK2 receptor kinase.
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Affiliation(s)
- Shuguo Hou
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China.
| | - Derui Liu
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
| | - Shijia Huang
- Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Dexian Luo
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
| | - Zunyong Liu
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
| | - Qingyuan Xiang
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL, USA
| | - Ping Wang
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA
| | - Ruimin Mu
- School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China
| | - Zhifu Han
- Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
| | - Sixue Chen
- Department of Biology, Genetics Institute, Plant Molecular and Cellular Biology Program, University of Florida, Gainesville, FL, USA
| | - Jijie Chai
- Innovation Center for Structural Biology, Tsinghua-Peking Joint Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China.,Max-Planck Institute for Plant Breeding Research, Institute of Biochemistry, University of Cologne, Cologne, Germany
| | - Libo Shan
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA.
| | - Ping He
- Department of Biochemistry and Biophysics, Texas A&M University, College Station, TX, USA.
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Huang X, Lin X, Liu F, Wu G, Yang Z, Meng A. The rise of developmental biology in China. Dev Growth Differ 2021; 64:106-115. [PMID: 34510425 DOI: 10.1111/dgd.12751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Revised: 08/16/2021] [Accepted: 08/21/2021] [Indexed: 11/30/2022]
Abstract
Developmental biology research in China started from experimental embryology, in particular from studies on aquatic and reptile animals. The recent growth of the developmental biology community in China parallels the increased governmental funding support and the recruitment of overseas talents. This flourishing field in China embraces the activities of developmental biology-related societies, national meetings, key research initiatives and talented scientists. The first Development paper from China, published in 2000, marked the beginning of a new era. More recently, the second decade in the 21st century witnessed the blossoming of developmental biology research in China. Significant research spotlights, technical advances, and up-and-coming areas will be discussed in this overview.
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Affiliation(s)
- Xun Huang
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China
| | - Xinhua Lin
- State Key Laboratory of Genetic Engineering, School of Life Sciences, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Feng Liu
- State Key Laboratory of Membrane Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Gen Wu
- High Technology Research and Development Center, Beijing, China
| | - Zhongzhou Yang
- State Key Laboratory of Pharmaceutical Biotechnology and MOE Key Laboratory of Model Animal for Disease Study, Model Animal Research Center, Medical School of Nanjing University, Nanjing, China
| | - Anming Meng
- State Key Laboratory of Membrane Biology, Tsinghua-Peking Center for Life Sciences, School of Life Sciences, Tsinghua University, Beijing, China
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Solis-Miranda J, Quinto C. The CrRLK1L subfamily: One of the keys to versatility in plants. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 166:88-102. [PMID: 34091211 DOI: 10.1016/j.plaphy.2021.05.028] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 05/18/2021] [Indexed: 06/12/2023]
Abstract
Catharanthus roseous kinase 1L receptors (CrRLK1Ls) are a subfamily of membrane receptors unique to plant cells that perceive internal and external signals, integrate metabolic, physiological, and molecular processes, and regulate plant development. Recent genomic studies have suggested that this receptor subfamily arose during the emergence of terrestrial plants and has since diversified, preserving its essential functions. Participation of some of these CrRLK1Ls in different processes is presented and discussed herein, as well as the increasing number of interactors necessary for their function. At least five different responses have been detected after activating these receptors, such as physiological changes, formation or disassembly of protein complexes, metabolic responses, modification of gene expression, and modulation of phytohormone activity. To date, a common response mechanism for all processes involving CrRLK1Ls has not been described. In this review, the information available on the different functions of CrRLK1Ls was compiled. Additionally, the physiological and/or molecular mechanisms involved in the signaling processes triggered by these receptors are also discussed. In this review, we propose a possible common signaling mechanism for all processes regulated by CrRLK1Ls and pose questions to be answered in the future.
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Affiliation(s)
- Jorge Solis-Miranda
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Colonia Chamilpa, Cuernavaca, Morelos, 62210, Mexico.
| | - Carmen Quinto
- Departamento de Biología Molecular de Plantas, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Colonia Chamilpa, Cuernavaca, Morelos, 62210, Mexico.
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Shin Y, Chane A, Jung M, Lee Y. Recent Advances in Understanding the Roles of Pectin as an Active Participant in Plant Signaling Networks. PLANTS (BASEL, SWITZERLAND) 2021; 10:1712. [PMID: 34451757 PMCID: PMC8399534 DOI: 10.3390/plants10081712] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/13/2021] [Accepted: 08/17/2021] [Indexed: 01/02/2023]
Abstract
Pectin is an abundant cell wall polysaccharide with essential roles in various biological processes. The structural diversity of pectins, along with the numerous combinations of the enzymes responsible for pectin biosynthesis and modification, plays key roles in ensuring the specificity and plasticity of cell wall remodeling in different cell types and under different environmental conditions. This review focuses on recent progress in understanding various aspects of pectin, from its biosynthetic and modification processes to its biological roles in different cell types. In particular, we describe recent findings that cell wall modifications serve not only as final outputs of internally determined pathways, but also as key components of intercellular communication, with pectin as a major contributor to this process. The comprehensive view of the diverse roles of pectin presented here provides an important basis for understanding how cell wall-enclosed plant cells develop, differentiate, and interact.
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Affiliation(s)
- Yesol Shin
- School of Biological Sciences, Seoul National University, Seoul 08826, Korea; (Y.S.); (A.C.); (M.J.)
| | - Andrea Chane
- School of Biological Sciences, Seoul National University, Seoul 08826, Korea; (Y.S.); (A.C.); (M.J.)
| | - Minjung Jung
- School of Biological Sciences, Seoul National University, Seoul 08826, Korea; (Y.S.); (A.C.); (M.J.)
| | - Yuree Lee
- School of Biological Sciences, Seoul National University, Seoul 08826, Korea; (Y.S.); (A.C.); (M.J.)
- Research Center for Plant Plasticity, Seoul National University, Seoul 08826, Korea
- Plant Genomics and Breeding Institute, Seoul National University, Seoul 08826, Korea
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44
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Kim MJ, Jeon BW, Oh E, Seo PJ, Kim J. Peptide Signaling during Plant Reproduction. TRENDS IN PLANT SCIENCE 2021; 26:822-835. [PMID: 33715959 DOI: 10.1016/j.tplants.2021.02.008] [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: 10/04/2020] [Revised: 02/02/2021] [Accepted: 02/17/2021] [Indexed: 05/08/2023]
Abstract
Plant signaling peptides are involved in cell-cell communication networks and coordinate a wide range of plant growth and developmental processes. Signaling peptides generally bind to receptor-like kinases, inducing their dimerization with co-receptors for signaling activation to trigger cellular signaling and biological responses. Fertilization is an important life event in flowering plants, involving precise control of cell-cell communications between male and female tissues. Peptide-receptor-like kinase-mediated signaling plays an important role in male-female interactions for successful fertilization in flowering plants. Here, we describe the recent findings on the functions and signaling pathways of peptides and receptors involved in plant reproduction processes including pollen germination, pollen tube growth, pollen tube guidance to the embryo sac, and sperm cell reception in female tissues.
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Affiliation(s)
- Min-Jung Kim
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea; Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Byeong Wook Jeon
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea; Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea
| | - Eunkyoo Oh
- Department of Life Sciences, Korea University, Seoul 02841, Korea
| | - Pil Joon Seo
- Department of Chemistry, Seoul National University, Seoul 08826, Korea
| | - Jungmook Kim
- Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea; Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea; Kumho Life Science Laboratory, Chonnam National University, Buk-Gu, Gwangju 61186, Korea.
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45
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Takeuchi H. The role of diverse LURE-type cysteine-rich peptides as signaling molecules in plant reproduction. Peptides 2021; 142:170572. [PMID: 34004266 DOI: 10.1016/j.peptides.2021.170572] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 04/12/2021] [Accepted: 05/06/2021] [Indexed: 02/08/2023]
Abstract
In angiosperm sexual reproduction, the male pollen tube undergoes a series of interactions with female tissues. For efficient growth and precise guidance, the pollen tube perceives extracellular ligands. In recent decades, various types of secreted cysteine-rich peptides (CRPs) have been identified as peptide ligands that regulate diverse angiosperm reproduction processes, including pollen tube germination, growth, guidance, and rupture. Notably, in two distant core eudicot plants, multiple LURE-type CRPs were found to be secreted from egg-accompanying synergid cells, and these CRPs act as a cocktail of pollen tube attractants for the final step of pollen tube guidance. LURE-type CRPs have species-preferential activity, even among close relatives, and exhibit remarkably divergent molecular evolution with conserved cysteine frameworks, demonstrating that they play a key role in species recognition in pollen tube guidance. In this review, I focus on "reproductive CRPs," particularly LURE-type CRPs, which underlie common but species-specific mechanisms in angiosperm sexual reproduction, and discuss their action, functional regulation, receptors, and evolution.
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Affiliation(s)
- Hidenori Takeuchi
- Institute for Advanced Research, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8601, Japan; Institute of Transformative Bio-Molecules (ITbM), Nagoya University, Furo-cho, Chikusa-ku, Nagoya, Aichi, 464-8601, Japan.
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Abstract
The gametophyte represents the sexual phase in the alternation of generations in plants; the other, nonsexual phase is the sporophyte. Here, we review the evolutionary origins of the male gametophyte among land plants and, in particular, its ontogenesis in flowering plants. The highly reduced male gametophyte of angiosperm plants is a two- or three-celled pollen grain. Its task is the production of two male gametes and their transport to the female gametophyte, the embryo sac, where double fertilization takes place. We describe two phases of pollen ontogenesis-a developmental phase leading to the differentiation of the male germline and the formation of a mature pollen grain and a functional phase representing the pollen tube growth, beginning with the landing of the pollen grain on the stigma and ending with double fertilization. We highlight recent advances in the complex regulatory mechanisms involved, including posttranscriptional regulation and transcript storage, intracellular metabolic signaling, pollen cell wall structure and synthesis, protein secretion, and phased cell-cell communication within the reproductive tissues.
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Affiliation(s)
- Said Hafidh
- Laboratory of Pollen Biology, Institute of Experimental Botany of the Czech Academy of Sciences, 165 02 Prague 6, Czech Republic; ,
| | - David Honys
- Laboratory of Pollen Biology, Institute of Experimental Botany of the Czech Academy of Sciences, 165 02 Prague 6, Czech Republic; ,
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Arefian M, Bhagya N, Prasad TSK. Phosphorylation-mediated signalling in flowering: prospects and retrospects of phosphoproteomics in crops. Biol Rev Camb Philos Soc 2021; 96:2164-2191. [PMID: 34047006 DOI: 10.1111/brv.12748] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 12/18/2022]
Abstract
Protein phosphorylation is a major post-translational modification, regulating protein function, stability, and subcellular localization. To date, annotated phosphorylation data are available mainly for model organisms and humans, despite the economic importance of crop species and their large kinomes. Our understanding of the phospho-regulation of flowering in relation to the biology and interaction between the pollen and pistil is still significantly lagging, limiting our knowledge on kinase signalling and its potential applications to crop production. To address this gap, we bring together relevant literature that were previously disconnected to present an overview of the roles of phosphoproteomic signalling pathways in modulating molecular and cellular regulation within specific tissues at different morphological stages of flowering. This review is intended to stimulate research, with the potential to increase crop productivity by providing a platform for novel molecular tools.
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Affiliation(s)
- Mohammad Arefian
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Center, Yenepoya (Deemed to be University), Mangalore, 575018, India
| | - N Bhagya
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Center, Yenepoya (Deemed to be University), Mangalore, 575018, India
| | - T S Keshava Prasad
- Center for Systems Biology and Molecular Medicine, Yenepoya Research Center, Yenepoya (Deemed to be University), Mangalore, 575018, India
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48
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Zhang J, Yue L, Wu X, Liu H, Wang W. Function of Small Peptides During Male-Female Crosstalk in Plants. FRONTIERS IN PLANT SCIENCE 2021; 12:671196. [PMID: 33968121 PMCID: PMC8102694 DOI: 10.3389/fpls.2021.671196] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/23/2021] [Accepted: 04/06/2021] [Indexed: 05/25/2023]
Abstract
Plant peptides secreted as signal molecular to trigger cell-to-cell signaling are indispensable for plant growth and development. Successful sexual reproduction in plants requires extensive communication between male and female gametophytes, their gametes, and with the surrounding sporophytic tissues. In the past decade, it has been well-documented that small peptides participate in many important reproductive processes such as self-incompatibility, pollen tube growth, pollen tube guidance, and gamete interaction. Here, we provide a comprehensive overview of the peptides regulating the processes of male-female crosstalk in plant, aiming at systematizing the knowledge on the sexual reproduction, and signaling of plant peptides in future.
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49
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Zhang C, Zhang T, Luebert F, Xiang Y, Huang CH, Hu Y, Rees M, Frohlich MW, Qi J, Weigend M, Ma H. Asterid Phylogenomics/Phylotranscriptomics Uncover Morphological Evolutionary Histories and Support Phylogenetic Placement for Numerous Whole-Genome Duplications. Mol Biol Evol 2021; 37:3188-3210. [PMID: 32652014 DOI: 10.1093/molbev/msaa160] [Citation(s) in RCA: 69] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 06/16/2020] [Accepted: 06/26/2020] [Indexed: 02/07/2023] Open
Abstract
Asterids are one of the most successful angiosperm lineages, exhibiting extensive morphological diversity and including a number of important crops. Despite their biological prominence and value to humans, the deep asterid phylogeny has not been fully resolved, and the evolutionary landscape underlying their radiation remains unknown. To resolve the asterid phylogeny, we sequenced 213 transcriptomes/genomes and combined them with other data sets, representing all accepted orders and nearly all families of asterids. We show fully supported monophyly of asterids, Berberidopsidales as sister to asterids, monophyly of all orders except Icacinales, Aquifoliales, and Bruniales, and monophyly of all families except Icacinaceae and Ehretiaceae. Novel taxon placements benefited from the expanded sampling with living collections from botanical gardens, resolving hitherto uncertain relationships. The remaining ambiguous placements here are likely due to limited sampling and could be addressed in the future with relevant additional taxa. Using our well-resolved phylogeny as reference, divergence time estimates support an Aptian (Early Cretaceous) origin of asterids and the origin of all orders before the Cretaceous-Paleogene boundary. Ancestral state reconstruction at the family level suggests that the asterid ancestor was a woody terrestrial plant with simple leaves, bisexual, and actinomorphic flowers with free petals and free anthers, a superior ovary with a style, and drupaceous fruits. Whole-genome duplication (WGD) analyses provide strong evidence for 33 WGDs in asterids and one in Berberidopsidales, including four suprafamilial and seven familial/subfamilial WGDs. Our results advance the understanding of asterid phylogeny and provide numerous novel evolutionary insights into their diversification and morphological evolution.
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Affiliation(s)
- Caifei Zhang
- Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Taikui Zhang
- Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Federico Luebert
- Nees Institute for Biodiversity of Plants, University of Bonn, Bonn, Germany.,Department of Silviculture and Nature Conservation, University of Chile, Santiago, Chile
| | - Yezi Xiang
- Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Chien-Hsun Huang
- Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Yi Hu
- Department of Biology, The Eberly College of Science, and The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA
| | - Mathew Rees
- Royal Botanic Gardens, Kew, Richmond, Surrey, United Kingdom
| | | | - Ji Qi
- Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering, School of Life Sciences, Fudan University, Shanghai, China
| | - Maximilian Weigend
- Nees Institute for Biodiversity of Plants, University of Bonn, Bonn, Germany
| | - Hong Ma
- Department of Biology, The Eberly College of Science, and The Huck Institutes of the Life Sciences, The Pennsylvania State University, University Park, PA
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50
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Li M, Yu G, Ma J, Liu P. Interactions of importers in long-distance transmission of wound-induced jasmonate. PLANT SIGNALING & BEHAVIOR 2021; 16:1886490. [PMID: 33576701 PMCID: PMC7971279 DOI: 10.1080/15592324.2021.1886490] [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] [Indexed: 05/06/2023]
Abstract
Mobile wound signals transmitted from local damaged to distal undamaged sites induce upsurge of jasmonic acid (JA) and activation of core JA signaling, priming the whole plant for broad-spectrum resistance/immunity against future challenges. We recently characterized two jasmonate importers AtJAT3 and AtJAT4 in Arabidopsis thaliana jasmonate transporter (JAT) family that cooperatively regulate the transmission of JA from leaf-to-leaf in this wound-induced systemic response/resistance (WSR). As half-molecule ATP-binding cassette transporters, AtJAT3 and AtJAT4 need to form homodimers or/and heterodimer to function. Here we show interactions in AtJAT3-AtJAT3, AtJAT3-AtJAT4, and AtJAT4-AtJAT4 pairs by both yeast two-hybrid and bimolecular fluorescent complementation assays. Furthermore, we propose a model in which the homo-/hetero-dimers of AtJAT3/AtJAT4 mediated cell-cell transport of JA drives long-distance transmission of JA signal in a self-propagation mode and give perspectives on future works to reinforce this model.
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Affiliation(s)
- Mengya Li
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, P. R. China
| | - Guanghui Yu
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, P. R. China
| | - Jing Ma
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, P. R. China
| | - Pei Liu
- Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing, P. R. China
- CONTACT Pei Liu Department of Ecology, College of Resources and Environmental Sciences, China Agricultural University, Beijing100193, P. R. China
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