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Cai Y, Tang C, Lv S, Chen Q, Zhu X, Li X, Qi K, Xie Z, Zhang S, Wang P, Wu J. Elucidation of the GAUT gene family in eight Rosaceae species and function analysis of PbrGAUT22 in pear pollen tube growth. PLANTA 2023; 257:68. [PMID: 36853424 DOI: 10.1007/s00425-023-04103-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Accepted: 02/20/2023] [Indexed: 06/18/2023]
Abstract
The phylogenetic relationship and evolutionary history of the GAUT gene family were identified in 8 Rosaseae species. PbrGAUT22 was involved in controlling pollen tube growth by regulating the content of pectins. In plants, galacturonosyltransferases (GAUTs) were involved in homogalacturonan biosynthesis and functioned in maintaining pollen tube cell wall integrity. However, the feature and evolutionary history of the GAUT gene family in Rosaceae species and candidates in pear pollen tube growth remain unclear. Here, we identified 190 GAUT genes in 8 Rosaceae species, including Chinese white pear (Pyrus bretschneideri), European pear (Pyrus communis), apple (Malus × domestica), peach (Prunus persica), Japanese apricot (Prunus mume), sweet cherry (Prunus avium), woodland strawberry (Fragaria vesca) and black raspberry (Rubus occidentalis). Members in GAUT gene family were divided into 4 subfamilies according to the phylogenetic and structural analysis. Whole-genome duplication events and dispersed duplicates drove the expansion of the GAUT gene family. Among 23 pollen-expressed PbrGAUT genes in pear, PbrGAUT22 showed increased expression level during 1-6 h post-cultured pollen tubes. PbrGAUT22 was localized to the cytoplasm and plasma membrane. Knockdown of PbrGAUT22 expression in pollen tubes caused the decrease of pectin content and inhibited pear pollen tubes growth. Taken together, we investigated the identification and evolution of the GAUT gene family in Rosaceae species, and found that PbrGAUT22 played an essential role in the synthesis of pectin and the growth of pear pollen tubes.
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Affiliation(s)
- Yiling Cai
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chao Tang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
- Hainan Yazhou Bay Seed Lab, Sanya, 572024, China
| | - Shouzheng Lv
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
| | - Qiming Chen
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xiaoxuan Zhu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
| | - Xian Li
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
| | - Kaijie Qi
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
| | - Zhihua Xie
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
| | - Shaoling Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
| | - Peng Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China
| | - Juyou Wu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Sanya Institute of Nanjing Agricultural University, Nanjing Agricultural University, Nanjing, 210095, China.
- Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, 210014, China.
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Differential effects of low and high temperature stress on pollen germination and tube length of mango (Mangifera indica L.) genotypes. Sci Rep 2023; 13:611. [PMID: 36635467 PMCID: PMC9837111 DOI: 10.1038/s41598-023-27917-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 01/10/2023] [Indexed: 01/14/2023] Open
Abstract
Mango flowering is highly sensitive to temperature changes. In this research, the maximum values of pollen germination rate (PGR), pollen tube length (PTL) and their cardinal temperatures (Tmin, Topt and Tmax) were estimated by using quadratic equation and modified bilinear model under the conditions of 14-36 °C. The pollen germination rate in four mango varieties ranged from 29.1% ('Apple mango') to 35.5% ('Renong No. 1'); the length of pollen tube ranged from 51.2 μm ('Deshehari') to 56.6 μm ('Jinhuang'). The cardinal temperatures ranges (Tmin, Topt and Tmax) of pollen germination were 20.3-22.8 °C, 26.7-30.6 °C and 30.4-34.3 °C, respectively; similarly, cardinal temperatures (Tmin, Topt and Tmax) of pollen tube growth were 20.3-21.2 °C, 27.9-32.1 °C and 30.2-34.4 °C respectively. Of those, 'Renong No. 1' could maintain relatively high pollen germination rate even at 30 °C, however, 'Deshehari' had the narrowest adaptive temperature range. These results were further confirmed by changes of superoxide dismutase, catalase activity and malondialdehyde content. These results showed that mango flowering was highly sensitive to temperature changes and there were significant differences in pollen germination rate and pollen tube length among different varieties. Current research results were of great significance for the introduction of new mango varieties in different ecological regions, the cultivation and management of mango at the flowering stage and the breeding of new mango varieties.
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Lin W, Li Y, Luo C, Huang G, Hu G, He X. Proteomic analysis of ubiquitinated proteins in ‘Xiangshui’ lemon [Citrus limon (L.)] pistils after self- and cross-pollination. J Proteomics 2022; 264:104631. [DOI: 10.1016/j.jprot.2022.104631] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 04/17/2022] [Accepted: 05/21/2022] [Indexed: 12/28/2022]
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Seidel T. The Plant V-ATPase. FRONTIERS IN PLANT SCIENCE 2022; 13:931777. [PMID: 35845650 PMCID: PMC9280200 DOI: 10.3389/fpls.2022.931777] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 06/03/2022] [Indexed: 05/25/2023]
Abstract
V-ATPase is the dominant proton pump in plant cells. It contributes to cytosolic pH homeostasis and energizes transport processes across endomembranes of the secretory pathway. Its localization in the trans Golgi network/early endosomes is essential for vesicle transport, for instance for the delivery of cell wall components. Furthermore, it is crucial for response to abiotic and biotic stresses. The V-ATPase's rather complex structure and multiple subunit isoforms enable high structural flexibility with respect to requirements for different organs, developmental stages, and organelles. This complexity further demands a sophisticated assembly machinery and transport routes in cells, a process that is still not fully understood. Regulation of V-ATPase is a target of phosphorylation and redox-modifications but also involves interactions with regulatory proteins like 14-3-3 proteins and the lipid environment. Regulation by reversible assembly, as reported for yeast and the mammalian enzyme, has not be proven in plants but seems to be absent in autotrophic cells. Addressing the regulation of V-ATPase is a promising approach to adjust its activity for improved stress resistance or higher crop yield.
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Li X, Tang C, Li X, Zhu X, Cai Y, Wang P, Zhang S, Wu J. Cellulose accumulation mediated by PbrCSLD5, a cellulose synthase-like protein, results in cessation of pollen tube growth in Pyrus bretschneideri. PHYSIOLOGIA PLANTARUM 2022; 174:e13700. [PMID: 35526262 DOI: 10.1111/ppl.13700] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 04/21/2022] [Accepted: 05/05/2022] [Indexed: 06/14/2023]
Abstract
Cellulose, a key component of the cell wall, plays an important role in maintaining the growth of pollen tubes. However, the molecular mechanism of cellulose participating in the cessation of pear pollen tube growth remains unclear. Here, we reported that at 15 h post-cultured (HPC), the slow-growth pear pollen tubes showed thickened cell walls and cellulose accumulation in the inner wall. Transcriptome data and quantitative real-time PCR analysis showed that PbrCSLD5, a cellulose synthesis-like gene, was highly expressed in the 15 HPC pear pollen tubes. Knockdown of PbrCSLD5 caused a decrease in cellulose content in pear pollen tubes. Moreover, PbrCSLD5 overexpression in Arabidopsis resulted in the accumulation of cellulose and disruption of normal pollen tube growth. Transcription factor PbrMADS52 was found to bind to the promoter of PbrCSLD5 and enhanced its expression. Our results suggested that the PbrMADS52-PbrCSLD5 signaling pathway led to increased cellulose content in the pear pollen tube cell wall, thereby inhibiting pollen tube growth. These results provided new insights into the regulation of pollen tube growth.
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Affiliation(s)
- Xian Li
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Chao Tang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- Hainan Yazhou Bay Seed Lab, Sanya, China
- Sanya Institute of Nanjing Agricultural University, Sanya, China
| | - Xiaoqiang Li
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Xiaoxuan Zhu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Yiling Cai
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Peng Wang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Shaoling Zhang
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
| | - Juyou Wu
- State Key Laboratory of Crop Genetics and Germplasm Enhancement, Nanjing Agricultural University, Nanjing, China
- Hainan Yazhou Bay Seed Lab, Sanya, China
- Sanya Institute of Nanjing Agricultural University, Sanya, China
- Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing, China
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Kong XX, Mei JW, Zhang J, Liu X, Wu JY, Wang CL. Turnover of diacylglycerol kinase 4 by cytoplasmic acidification induces vacuole morphological change and nuclear DNA degradation in the early stage of pear self-incompatibility response. JOURNAL OF INTEGRATIVE PLANT BIOLOGY 2021; 63:2123-2135. [PMID: 34655280 DOI: 10.1111/jipb.13180] [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: 08/25/2021] [Accepted: 10/15/2021] [Indexed: 06/13/2023]
Abstract
Pear has an S-RNase-based gametophytic self-incompatibility (SI) system. Nuclear DNA degradation is a typical feature of incompatible pollen tube death, and is among the many physiological functions of vacuoles. However, the specific changes that occur in vacuoles, as well as the associated regulatory mechanism in pear SI, are currently unclear. Although research in tobacco has shown that decreased activity of diacylglycerol kinase (DGK) results in the morphological change of pollen tube vacuole, whether DGK regulates the pollen tube vacuole of tree plants and whether it occurs in SI response, is currently unclear. We found that DGK activity is essential for pear pollen tube growth, and DGK4 regulates pollen tube vacuole morphology following its high expression and deposition at the tip and shank edge of the pollen tube of pear. Specifically, incompatible S-RNase may induce cytoplasmic acidification of the pollen tube by inhibiting V-ATPase V0 domain a1 subunit gene expression as early as 30 min after treatment, when the pollen tube is still alive. Cytoplasmic acidification induced by incompatible S-RNase results in reduced DGK4 abundance and deposition, leading to morphological change of the vacuole and fragmentation of nuclear DNA, which indicates that DGK4 is a key factor in pear SI response.
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Affiliation(s)
- Xiao-Xiong Kong
- School of Horticulture and Plant Protection, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Jia-Wei Mei
- School of Horticulture and Plant Protection, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Jing Zhang
- School of Horticulture and Plant Protection, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Xiao Liu
- School of Horticulture and Plant Protection, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
| | - Ju-You Wu
- Center of Pear Engineering Technology Research, State Key Laboratory of Crop Genetics and Germplasm Enhancement, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, China
| | - Chun-Lei Wang
- School of Horticulture and Plant Protection, International Research Laboratory of Agriculture and Agri-Product Safety, Key Laboratory of Plant Functional Genomics of the Ministry of Education, Yangzhou University, Yangzhou, 225009, China
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Zhou H, Huang W, Luo S, Hu H, Zhang Y, Zhang L, Li P. Genome-Wide Identification of the Vacuolar H +-ATPase Gene Family in Five Rosaceae Species and Expression Analysis in Pear ( Pyrus bretschneideri). PLANTS (BASEL, SWITZERLAND) 2020; 9:plants9121661. [PMID: 33261053 PMCID: PMC7761284 DOI: 10.3390/plants9121661] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 11/22/2020] [Accepted: 11/24/2020] [Indexed: 06/12/2023]
Abstract
Vacuolar H+-ATPases (V-ATPase) are multi-subunit complexes that function as ATP hydrolysis-driven proton pumps. They play pivotal roles in physiological processes, such as development, metabolism, stress, and growth. However, there have been very few studies on the characterisation of V-ATPase (VHA) genes in Rosaceae species. Therefore, in the present study, we performed a genome-wide analysis and identified VHA gene family members in five Rosaceae species (Pyrus bretschneideri, Malus domestica, Prunus persica, Fragaria vesca, and Prunus mume). A total of 159 VHA genes were identified, and were classified into 13 subfamilies according to the phylogenetic analysis. The structure of VHA proteins revealed high similarity among different VHA genes within the same subgroup. Gene duplication event analysis revealed that whole-genome duplications represented the major pathway for expansion of the Pyrus bretschneideri VHA genes (PbrVHA genes). The tissue-specific expression analysis of the pear showed that 36 PbrVHA genes were expressed in major tissues. Seven PbrVHA genes were significantly downregulated when the pollen tube growth stopped. Moreover, many PbrVHA genes were differentially expressed during fruit development and storage, suggesting that VHA genes play specific roles in development and senescence. The present study provides fundamental information for further elucidating the potential roles of VHA genes during development and senescence.
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Affiliation(s)
- Hongsheng Zhou
- Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.Z.); (S.L.); (H.H.); (Y.Z.)
- Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing 210014, China
| | - Wen Huang
- Nanjing Institute of Vegetable Science, Nanjing 210042, China;
| | - Shufen Luo
- Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.Z.); (S.L.); (H.H.); (Y.Z.)
| | - Huali Hu
- Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.Z.); (S.L.); (H.H.); (Y.Z.)
| | - Yingtong Zhang
- Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.Z.); (S.L.); (H.H.); (Y.Z.)
| | - Leigang Zhang
- Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.Z.); (S.L.); (H.H.); (Y.Z.)
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Pengxia Li
- Institute of Agricultural Facilities and Equipment, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, China; (H.Z.); (S.L.); (H.H.); (Y.Z.)
- Jiangsu Key Laboratory for Horticultural Crop Genetic Improvement, Nanjing 210014, China
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
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Çetinbaş-Genç A, Cai G, Del Duca S. Treatment with spermidine alleviates the effects of concomitantly applied cold stress by modulating Ca 2+, pH and ROS homeostasis, actin filament organization and cell wall deposition in pollen tubes of Camellia sinensis. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 156:578-590. [PMID: 33065378 DOI: 10.1016/j.plaphy.2020.10.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 10/08/2020] [Indexed: 06/11/2023]
Abstract
The aim of the current study was to examine the effect of spermidine treatment concomitant with cold stress on the elongation of Camellia sinensis pollen tube. When exogenous spermidine (0.05 mM) was applied concomitantly with cold stress, pollen germination rate and pollen tube length were significantly increased in comparison with cold stressed pollen tubes. In addition, spermidine treatment concomitantly with cold stress reduced pollen tube abnormalities induced by cold stress. Besides, cold-induced disorganizations of actin filaments were ameliorated after spermidine treatment along with cold stress because anisotropy levels of actin filaments in shank and apex of pollen tubes decreased. Changes in cold-induced callose distribution in the pollen tube cell wall were partially recovered after spermidine/cold stress treatment. Other cold-induced effects (decrease in Ca2+ content, reduction of pH gradient, accumulation of ROS) were reverted to adequate levels after spermidine treatment in conjunction with cold stress, indicating that pollen tubes are able to cope with stress. Thus, spermidine treatment reorganized the growth pattern of pollen tubes by modulating Ca2+ and ROS homeostasis, actin cytoskeleton organization, and cell wall deposition in Camellia sinensis pollen tubes under cold stress.
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Affiliation(s)
- Aslıhan Çetinbaş-Genç
- Department of Biology, Marmara University, Göztepe Campus, Kadıköy, 34722, Istanbul, Turkey.
| | - Giampiero Cai
- Department of Life Sciences, University of Siena, Via Mattioli 4, 53100, Siena, Italy.
| | - Stefano Del Duca
- Department of Biological, Geological and Environmental Sciences, University of Bologna, Via Irnerio 42, 40126, Bologna, Italy.
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Jiang YT, Tang RJ, Zhang YJ, Xue HW, Ferjani A, Luan S, Lin WH. Two tonoplast proton pumps function in Arabidopsis embryo development. THE NEW PHYTOLOGIST 2020; 225:1606-1617. [PMID: 31569267 DOI: 10.1111/nph.16231] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2019] [Accepted: 09/22/2019] [Indexed: 06/10/2023]
Abstract
Two types of tonoplast proton pumps, H+ -pyrophosphatase (V-PPase) and the H+ -ATPase (V-ATPase), establish the proton gradient that powers molecular traffic across the tonoplast thereby facilitating turgor regulation and nutrient homeostasis. However, how proton pumps regulate development remains unclear. In this study, we investigated the function of two types of proton pumps in Arabidopsis embryo development and pattern formation. While disruption of either V-PPase or V-ATPase had no obvious effect on plant embryo development, knocking out both resulted in severe defects in embryo pattern formation from the early stage. While the first division in wild-type zygote was asymmetrical, a nearly symmetrical division occurred in the mutant, followed by abnormal pattern formation at all stages of embryo development. The embryonic defects were accompanied by dramatic differences in vacuole morphology and distribution, as well as disturbed localisation of PIN1. The development of mutant cotyledons and root, and the auxin response of mutant seedlings supported the hypothesis that mutants lacking tonoplast proton pumps were defective in auxin transport and distribution. Taking together, we proposed that two tonoplast proton pumps are required for vacuole morphology and PIN1 localisation, thereby controlling vacuole and auxin-related developmental processes in Arabidopsis embryos and seedlings.
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Affiliation(s)
- Yu-Tong Jiang
- School of Life Sciences and Biotechnology, The Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, 200240, Shanghai, China
| | - Ren-Jie Tang
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
| | - Yan-Jie Zhang
- School of Life Sciences and Biotechnology, The Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, 200240, Shanghai, China
| | - Hong-Wei Xue
- School of Agriculture and Biology, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai, 200240, China
- National Key Laboratory of Plant Molecular Genetics, CAS Center for Excellence in Molecular Plant Sciences, Institute of Plant Physiology and Ecology, Chinese Academy of Sciences, 200032, Shanghai, China
| | - Ali Ferjani
- Department of Biology, Tokyo Gakugei University, 184-8501, Koganei-shi, Japan
| | - Sheng Luan
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
| | - Wen-Hui Lin
- School of Life Sciences and Biotechnology, The Joint International Research Laboratory of Metabolic & Developmental Sciences, Shanghai Jiao Tong University, 200240, Shanghai, China
- Department of Plant and Microbial Biology, University of California, Berkeley, CA, 94720, USA
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Çetinbaş-Genç A. Putrescine modifies the pollen tube growth of tea (Camellia sinensis) by affecting actin organization and cell wall structure. PROTOPLASMA 2020; 257:89-101. [PMID: 31342152 DOI: 10.1007/s00709-019-01422-x] [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: 05/03/2019] [Accepted: 07/17/2019] [Indexed: 06/10/2023]
Abstract
The aim of the current study was to examine the effect of different exogenous putrescine concentrations (200, 400, 600, and 800 μM) on the tea pollen performance. It was shown that putrescine has a dose-dependent effect on pollen performance. Results exhibited that pollen germination and tube elongation were induced by 200 and 400 μM putrescine treatment, especially, 400 μM putrescine-enhanced pollen performance. However, pollen performance was inhibited by higher concentrations of putrescine. Putrescine concentrations above 400 μM changed the actin filament distribution in pollen tubes by affecting the distribution of sucrose synthase enzyme. Alterations of the distribution on sucrose synthase enzyme also caused the alterations in the dispersion of cellulose and callose in the cell wall, and morphological alterations such as balloon-shaped and snake-shaped pollen tube tip accompanied them. Moreover, putrescine concentrations above 400 μM caused a decrease of ROS level in apex and led to chromatin condensation of the generative nucleus. In conclusion, exogenous putrescine application can be used as a pollen performance enhancer at low concentrations while the high concentrations cause adverse effects reducing fertilization success.
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Affiliation(s)
- Aslıhan Çetinbaş-Genç
- Department of Biology, Marmara University, Göztepe Campus, Kadıköy, 34722, Istanbul, Turkey.
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11
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Cao Y, Han Y, Meng D, Li D, Jiao C, Jin Q, Lin Y, Cai Y. B-BOX genes: genome-wide identification, evolution and their contribution to pollen growth in pear (Pyrus bretschneideri Rehd.). BMC PLANT BIOLOGY 2017; 17:156. [PMID: 28927374 PMCID: PMC5606111 DOI: 10.1186/s12870-017-1105-4] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2017] [Accepted: 09/08/2017] [Indexed: 05/15/2023]
Abstract
BACKGROUND The B-BOX (BBX) proteins have important functions in regulating plant growth and development. In plants, the BBX gene family has been identified in several plants, such as rice, Arabidopsis and tomato. However, there still lack a genome-wide survey of BBX genes in pear. RESULTS In the present study, a total of 25 BBX genes were identified in pear (Pyrus bretschneideri Rehd.). Subsequently, phylogenetic relationship, gene structure, gene duplication, transcriptome data and qRT-PCR were conducted on these BBX gene members. The transcript analysis revealed that twelve PbBBX genes (48%) were specifically expressed in pear pollen tubes. Furthermore, qRT-PCR analysis indicated that both PbBBX4 and PbBBX13 have potential role in pear fruit development, while PbBBX5 should be involved in the senescence of pear pollen tube. CONCLUSIONS This study provided a genome-wide survey of BBX gene family in pear, and highlighted its roles in both pear fruits and pollen tubes. The results will be useful in improving our understanding of the complexity of BBX gene family and functional characteristics of its members in future study.
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Affiliation(s)
- Yunpeng Cao
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036 China
| | - Yahui Han
- State Key Laboratory of Tea Plant Biology and Utilization, Anhui Agricultural University, Hefei, 230036 China
| | - Dandan Meng
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036 China
| | - Dahui Li
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036 China
| | - Chunyan Jiao
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036 China
| | - Qing Jin
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036 China
| | - Yi Lin
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036 China
| | - Yongping Cai
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036 China
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12
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Zhou H, Qi K, Liu X, Yin H, Wang P, Chen J, Wu J, Zhang S. Genome-wide identification and comparative analysis of the cation proton antiporters family in pear and four other Rosaceae species. Mol Genet Genomics 2016; 291:1727-42. [DOI: 10.1007/s00438-016-1215-y] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Accepted: 05/06/2016] [Indexed: 11/28/2022]
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13
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Gene-expression profile of developing pollen tube of Pyrus bretschneideri. Gene Expr Patterns 2015; 20:11-21. [PMID: 26547040 DOI: 10.1016/j.gep.2015.10.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Revised: 10/28/2015] [Accepted: 10/30/2015] [Indexed: 11/23/2022]
Abstract
Pollen is an ideal model system for investigation of cell growth. In order to better understand the molecular biology mechanisms of the process of pear pollen tube development, RNA sequencing (RNA-Seq) technology was used to characterize the expression of genes during four development stages of pear pollen, including mature pollen grains (MP), hydrated pollen grains (HP), growing pollen tubes (PT) and stopped-growth pollen tubes (SPT). The four libraries generated a total of 47,072,151 clean reads that were mapped and assembled into 21,394 genes. Transcripts from the four stages were classified into 38 functional subcategories. Between MP and HP, 305 genes were differentially expressed, and 502 genes were differentially expressed between HP and PT. More importantly, we have observed that 2208 genes were differentially expressed between PT and SPT, and this is the first report of the gene expression comparison between the two development stages. Eight of the differentially expressed genes were randomly selected to confirm the RNA-Seq results by quantitative real-time PCR (qRT-PCR). Taken together, this research provides a platform for future research on pear pollen tube growth and growth cessation.
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