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Zhang H, Liu X, Tang C, Lv S, Zhang S, Wu J, Wang P. PbRbohH/J mediates ROS generation to regulate the growth of pollen tube in pear. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108342. [PMID: 38219427 DOI: 10.1016/j.plaphy.2024.108342] [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: 10/08/2023] [Revised: 12/21/2023] [Accepted: 01/05/2024] [Indexed: 01/16/2024]
Abstract
Respiratory burst oxidase homolog (Rboh) family genes play crucial functions in development and growth. However, comprehensive and systematic investigation of Rboh family members in Rosaceae and their specific functions during pear pollen development are still limited. In the study, 63 Rboh genes were identified from eight Rosaceae genomes (Malus domestica, Pyrus bretschneideri, Pyrus communis, Prunus persica, Rubus occidentalis, Fragaria vesca, Prunus mume and Prunus avium) and divided into seven main subfamilies (I-VII) according to phylogenetic and structural features. Different modes of gene duplication led to the expansion of Rboh family, with purifying selection playing a vital role in the evolution of Rboh genes. In addition, RNA sequencing and qRT-PCR results indicated that PbRbohH and PbRbohJ were specifically high-expressed in pear pollen. Subsequently, subcellular localization revealed that PbRbohH/J distributed at the plasma membrane. Furthermore, by pharmacological analysis and antisense oligodeoxynucleotide assay, PbRbohH/J were demonstrated to mediate the formation of reactive oxygen species (ROS) to manage pollen tube growth. In conclusion, our results provide useful insights into the functions, expression patterns, evolutionary history of the Rboh genes in pear and other Rosaceae species.
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Affiliation(s)
- Hao Zhang
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Xueying Liu
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Chao Tang
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Shouzheng Lv
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Shaoling Zhang
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Juyou Wu
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
| | - Peng Wang
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
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Singh AK, Mishra P, Kashyap SP, Karkute SG, Singh PM, Rai N, Bahadur A, Behera TK. Molecular insights into mechanisms underlying thermo-tolerance in tomato. FRONTIERS IN PLANT SCIENCE 2022; 13:1040532. [PMID: 36388532 PMCID: PMC9645296 DOI: 10.3389/fpls.2022.1040532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/12/2022] [Indexed: 06/16/2023]
Abstract
Plant productivity is being seriously compromised by climate-change-induced temperature extremities. Agriculture and food safety are threatened due to global warming, and in many cases the negative impacts have already begun. Heat stress leads to significant losses in yield due to changes in growth pattern, plant phonologies, sensitivity to pests, flowering, grain filling, maturity period shrinkage, and senescence. Tomato is the second most important vegetable crop. It is very sensitive to heat stress and thus, yield losses in tomato due to heat stress could affect food and nutritional security. Tomato plants respond to heat stress with a variety of cellular, physiological, and molecular responses, beginning with the early heat sensing, followed by signal transduction, antioxidant defense, osmolyte synthesis and regulated gene expression. Recent findings suggest that specific plant organs are extremely sensitive to heat compared to the entire plant, redirecting the research more towards generative tissues. This is because, during sexual reproduction, developing pollens are the most sensitive to heat. Often, just a few degrees of temperature elevation during pollen development can have a negative effect on crop production. Furthermore, recent research has discovered certain genetic and epigenetic mechanisms playing key role in thermo-tolerance and have defined new directions for tomato heat stress response (HSR). Present challenges are to increase the understanding of molecular mechanisms underlying HS, and to identify superior genotypes with more tolerance to extreme temperatures. Several metabolites, genes, heat shock factors (HSFs) and microRNAs work together to regulate the plant HSR. The present review provides an insight into molecular mechanisms of heat tolerance and current knowledge of genetic and epigenetic control of heat-tolerance in tomato for sustainable agriculture in the future. The information will significantly contribute to improve breeding programs for development of heat tolerant cultivars.
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Affiliation(s)
- Achuit K. Singh
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India
| | - Pallavi Mishra
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India
| | - Sarvesh Pratap Kashyap
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India
| | - Suhas G. Karkute
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India
| | - Prabhakar Mohan Singh
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India
| | - Nagendra Rai
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India
| | - Anant Bahadur
- Division of Crop Production, ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India
| | - Tusar K. Behera
- Division of Crop Improvement, ICAR-Indian Institute of Vegetable Research, Varanasi, Uttar Pradesh, India
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Monticelli LS, Labonté A, Turpin M, Biju‐Duval L, Felten E, Laurent E, Matejicek A, Vieren E, Deytieux V, Cordeau S, Vanbergen AJ. Agroecological farming, flowering phenology and the pollinator‐herbivore‐parasitoid nexus regulate non‐crop plant reproduction. J Appl Ecol 2022. [DOI: 10.1111/1365-2664.14205] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lucie S. Monticelli
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
- Université Côte d’Azur INRAE, CNRS, UMR ISA Nice France
| | - Audrey Labonté
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
| | - Mélinda Turpin
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
| | - Luc Biju‐Duval
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
| | - Emeline Felten
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
| | - Emilien Laurent
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
| | - Annick Matejicek
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
| | - Eric Vieren
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
| | - Violaine Deytieux
- U2E, INRAE, Unité Expérimentale du Domaine d’Epoisses, F‐21110 Breteniere France
| | - Stephane Cordeau
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
| | - Adam J. Vanbergen
- Agroécologie, INRAE, Institut Agro, Univ. Bourgogne, Univ. Bourgogne Franche‐Comté, F‐21000 Dijon France
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Sonmez MC, Ozgur R, Uzilday B, Turkan I, Ganie SA. Redox regulation in
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plants during climate change and its implications on food security. Food Energy Secur 2022. [DOI: 10.1002/fes3.387] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Affiliation(s)
| | - Rengin Ozgur
- Department of Biology Faculty of Science Ege University Izmir Turkey
- Graduate School of Life Sciences Tohoku University Sendai Japan
| | - Baris Uzilday
- Department of Biology Faculty of Science Ege University Izmir Turkey
- Graduate School of Life Sciences Tohoku University Sendai Japan
| | - Ismail Turkan
- Department of Biology Faculty of Science Ege University Izmir Turkey
| | - Showkat Ahmad Ganie
- Plant Molecular Science and Centre of Systems and Synthetic Biology Department of Biological Sciences Royal Holloway University of London Egham UK
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Xie DL, Zheng XL, Zhou CY, Kanwar MK, Zhou J. Functions of Redox Signaling in Pollen Development and Stress Response. Antioxidants (Basel) 2022; 11:antiox11020287. [PMID: 35204170 PMCID: PMC8868224 DOI: 10.3390/antiox11020287] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/28/2022] [Accepted: 01/29/2022] [Indexed: 02/01/2023] Open
Abstract
Cellular redox homeostasis is crucial for normal plant growth and development. Each developmental stage of plants has a specific redox mode and is maintained by various environmental cues, oxidants, and antioxidants. Reactive oxygen species (ROS) and reactive nitrogen species are the chief oxidants in plant cells and participate in cell signal transduction and redox balance. The production and removal of oxidants are in a dynamic balance, which is necessary for plant growth. Especially during reproductive development, pollen development depends on ROS-mediated tapetal programmed cell death to provide nutrients and other essential substances. The deviation of the redox state in any period will lead to microspore abortion and pollen sterility. Meanwhile, pollens are highly sensitive to environmental stress, in particular to cell oxidative burst due to its peculiar structure and function. In this regard, plants have evolved a series of complex mechanisms to deal with redox imbalance and oxidative stress damage. This review summarizes the functions of the main redox components in different stages of pollen development, and highlights various redox protection mechanisms of pollen in response to environmental stimuli. In continuation, we also discuss the potential applications of plant growth regulators and antioxidants for improving pollen vigor and fertility in sustaining better agriculture practices.
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Affiliation(s)
- Dong-Ling Xie
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
| | - Xue-Lian Zheng
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
| | - Can-Yu Zhou
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
| | - Mukesh Kumar Kanwar
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
| | - Jie Zhou
- Department of Horticulture, Zhejiang University, Yuhangtang Road 866, Hangzhou 310058, China; (D.-L.X.); (X.-L.Z.); (C.-Y.Z.); (M.K.K.)
- Key Laboratory of Horticultural Plants Growth, Development and Quality Improvement, Agricultural Ministry of China, Yuhangtang Road 866, Hangzhou 310058, China
- Shandong (Linyi) Institute of Modern Agriculture, Zhejiang University, Linyi 276000, China
- Correspondence:
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Katano K, Suzuki N. What are the key mechanisms that alter the morphology of stigmatic papillae in Arabidopsis thaliana? PLANT SIGNALING & BEHAVIOR 2021; 16:1980999. [PMID: 34549683 PMCID: PMC9208798 DOI: 10.1080/15592324.2021.1980999] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Revised: 09/10/2021] [Accepted: 09/11/2021] [Indexed: 05/31/2023]
Abstract
Pollination is one of the critical processes that determines crop yield and quality. Thus, it is an urgent need to elucidate the mechanisms underlying pollination. Our previous research has revealed a novel phenomenon that pollen attachment to stigma caused stigma shrinkage, whereas failure of pollen attachment to stigma due to the environmental stress induced elongation of stigmatic papillae. However, little is known about the mechanisms of these morphological alterations in stigmatic papillae. Since the RLK-ROPGEF-ROP network is a common mechanism for the elongation of pollen tubes and root hairs, this network may be also involved in the elongation of papillae in the stigma. In this review, we will discuss the known mechanisms regulating pollen tube growth and root hair elongation and attempt to propose an elongation mechanism of stigmatic papillae. In addition, we will suggest that the degradation of F-actin by a significant increase in Ca2+ induced by the components of pollen coat might be a putative molecular mechanism of stigmatic papillae shrinkage during pollen adhesion.
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Affiliation(s)
- Kazuma Katano
- Research Fellow of Japan Society for the Promotion of Science, Tokyo, Chiyoda, Japan
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, Tokyo, Japan
| | - Nobuhiro Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda-ku, Tokyo, Japan
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Kiyono H, Katano K, Suzuki N. Links between Regulatory Systems of ROS and Carbohydrates in Reproductive Development. PLANTS 2021; 10:plants10081652. [PMID: 34451697 PMCID: PMC8401158 DOI: 10.3390/plants10081652] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 08/03/2021] [Accepted: 08/09/2021] [Indexed: 12/02/2022]
Abstract
To thrive on the earth, highly sophisticated systems to finely control reproductive development have been evolved in plants. In addition, deciphering the mechanisms underlying the reproductive development has been considered as a main research avenue because it leads to the improvement of the crop yields to fulfill the huge demand of foods for the growing world population. Numerous studies revealed the significance of ROS regulatory systems and carbohydrate transports and metabolisms in the regulation of various processes of reproductive development. However, it is poorly understood how these mechanisms function together in reproductive tissues. In this review, we discuss mode of coordination and integration between ROS regulatory systems and carbohydrate transports and metabolisms underlying reproductive development based on the hitherto findings. We then propose three mechanisms as key players that integrate ROS and carbohydrate regulatory systems. These include ROS-dependent programmed cell death (PCD), mitochondrial and respiratory metabolisms as sources of ROS and energy, and functions of arabinogalactan proteins (AGPs). It is likely that these key mechanisms govern the various signals involved in the sequential events required for proper seed production.
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Affiliation(s)
- Hanako Kiyono
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda, Tokyo 102-8554, Japan; (H.K.); (K.K.)
| | - Kazuma Katano
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda, Tokyo 102-8554, Japan; (H.K.); (K.K.)
- Research Fellow of Japan Society for the Promotion of Science, Chiyoda, Tokyo 102-0083, Japan
| | - Nobuhiro Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda, Tokyo 102-8554, Japan; (H.K.); (K.K.)
- Correspondence: ; Tel.: +81-3-3238-3884
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Decreased Levels of Thioredoxin o1 Influences Stomatal Development and Aperture but Not Photosynthesis under Non-Stress and Saline Conditions. Int J Mol Sci 2021; 22:ijms22031063. [PMID: 33494429 PMCID: PMC7865980 DOI: 10.3390/ijms22031063] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2020] [Revised: 01/14/2021] [Accepted: 01/19/2021] [Indexed: 11/17/2022] Open
Abstract
Salinity has a negative impact on plant growth, with photosynthesis being downregulated partially due to osmotic effect and enhanced cellular oxidation. Redox signaling contributes to the plant response playing thioredoxins (TRXs) a central role. In this work we explore the potential contribution of Arabidopsis TRXo1 to the photosynthetic response under salinity analyzing Arabidopsis wild-type (WT) and two Attrxo1 mutant lines in their growth under short photoperiod and higher light intensity than previous reported works. Stomatal development and apertures and the antioxidant, hormonal and metabolic acclimation are also analyzed. In control conditions mutant plants displayed less and larger developed stomata and higher pore size which could underlie their higher stomatal conductance, without being affected in other photosynthetic parameters. Under salinity, all genotypes displayed a general decrease in photosynthesis and the oxidative status in the Attrxo1 mutant lines was altered, with higher levels of H2O2 and NO but also higher ascorbate/glutathione (ASC/GSH) redox states than WT plants. Finally, sugar changes and increases in abscisic acid (ABA) and NO may be involved in the observed higher stomatal response of the TRXo1-altered plants. Therefore, the lack of AtTRXo1 affected stomata development and opening and the mutants modulate their antioxidant, metabolic and hormonal responses to optimize their adaptation to salinity.
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Sierocka I, Alaba S, Jarmolowski A, Karlowski WM, Szweykowska-Kulinska Z. The identification of differentially expressed genes in male and female gametophytes of simple thalloid liverwort Pellia endiviifolia sp. B using an RNA-seq approach. PLANTA 2020; 252:21. [PMID: 32671488 PMCID: PMC7363739 DOI: 10.1007/s00425-020-03424-z] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 07/08/2020] [Indexed: 05/03/2023]
Abstract
MAIN CONCLUSION This study shows differences in gene expression between male and female gametophytes of the simple thalloid liverwort with a distinction between the vegetative and reproductive phases of growth. Pellia endiviifolia is a simple thalloid liverwort that, together with hornworts and mosses, represents the oldest living land plants. The limited taxon sampling for genomic and functional studies hampers our understanding of processes governing evolution of these plants. RNA sequencing represents an attractive way to elucidate the molecular mechanisms of non-model species development. In the present study, RNA-seq was used to profile the differences in gene expression between P. endiviifolia male and female gametophytes, with a distinction between the vegetative and reproductive phases of growth. By comparison of the gene expression profiles from individuals producing sex organs with the remaining thalli types, we have determined a set of genes whose expression might be important for the development of P. endiviifolia reproductive organs. The selected differentially expressed genes (DEGs) were categorized into five main pathways: metabolism, genetic information processing, environmental information processing, cellular processes, and organismal systems. A comparison of the obtained data with the Marchantia polymorpha transcriptome resulted in the identification of genes exhibiting a similar expression pattern during the reproductive phase of growth between members of the two distinct liverwort classes. The common expression profile of 87 selected genes suggests a common mechanism governing sex organ development in both liverwort species. The obtained RNA-seq results were confirmed by RT-qPCR for the DEGs with the highest differences in expression level. Five Pellia-female-specific and two Pellia-male-specific DEGs showed enriched expression in archegonia and antheridia, respectively. The identified genes are promising candidates for functional studies of their involvement in liverwort sexual reproduction.
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Affiliation(s)
- Izabela Sierocka
- Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 6, 61-614, Poznan, Poland.
| | - Sylwia Alaba
- Department of Computational Biology, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 6, 61-614, Poznan, Poland
| | - Artur Jarmolowski
- Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 6, 61-614, Poznan, Poland
| | - Wojciech M Karlowski
- Department of Computational Biology, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 6, 61-614, Poznan, Poland
| | - Zofia Szweykowska-Kulinska
- Department of Gene Expression, Institute of Molecular Biology and Biotechnology, Faculty of Biology, Adam Mickiewicz University in Poznan, Uniwersytetu Poznanskiego 6, 61-614, Poznan, Poland
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Katano K, Oi T, Suzuki N. Failure of Pollen Attachment to the Stigma Triggers Elongation of Stigmatic Papillae in Arabidopsis thaliana. FRONTIERS IN PLANT SCIENCE 2020; 11:989. [PMID: 32714359 PMCID: PMC7340091 DOI: 10.3389/fpls.2020.00989] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 06/17/2020] [Indexed: 05/20/2023]
Abstract
Pollination is one of key determinants of yield production in important crops, such as grains and beans in which seeds are utilized as agricultural products. Thus, to fulfil food demand for growing world population, it is necessary to elucidate the mechanisms that regulate pollination, leading to increase in yield production. In this study, we compared detailed morphological characteristics of reproductive organs in Arabidopsis thaliana grown under control conditions or subjected to heat stress. Shorter length of anthers, filaments, and petals were observed in plants subjected to heat stress compared to those under control conditions. In contrast, heat stress resulted in enlargement of stigma via elongation of stigmatic papillae. Classification of stigmas based on patterns of pollen attachment indicated that pollen attachment to stigma clearly decreased under heat stress. In addition, artificial pollination experiment demonstrated that stigma shrank when pollen attached, but, continued to enlarge in the absence of pollen. Such modulation of stigma size depending on the presence or absence of pollen was observed both under control and heat stressed conditions. Taken together, these results suggest that elongation of stigmatic papillae is associated with failure of pollen attachment to the stigma, rather than heat stress. Furthermore, histochemical staining experiments suggest that Ca2+ derived from pollen together with O2 - might be associated with morphological alteration of stigma depending on the patterns of pollen attachment.
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Affiliation(s)
- Kazuma Katano
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda, Japan
| | - Takao Oi
- Graduate School of Bioagricultural Sciences, Nagoya University, Nagoya, Japan
| | - Nobuhiro Suzuki
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, Chiyoda, Japan
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Pan X, Yan W, Chang Z, Xu Y, Luo M, Xu C, Chen Z, Wu J, Tang X. OsMYB80 Regulates Anther Development and Pollen Fertility by Targeting Multiple Biological Pathways. PLANT & CELL PHYSIOLOGY 2020; 61:988-1004. [PMID: 32142141 PMCID: PMC7217667 DOI: 10.1093/pcp/pcaa025] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 03/01/2020] [Indexed: 05/13/2023]
Abstract
Pollen development is critical to the reproductive success of flowering plants, but how it is regulated is not well understood. Here, we isolated two allelic male-sterile mutants of OsMYB80 and investigated how OsMYB80 regulates male fertility in rice. OsMYB80 was barely expressed in tissues other than anthers, where it initiated the expression during meiosis, reached the peak at the tetrad-releasing stage and then quickly declined afterward. The osmyb80 mutants exhibited premature tapetum cell death, lack of Ubisch bodies, no exine and microspore degeneration. To understand how OsMYB80 regulates anther development, RNA-seq analysis was conducted to identify genes differentially regulated by OsMYB80 in rice anthers. In addition, DNA affinity purification sequencing (DAP-seq) analysis was performed to identify DNA fragments interacting with OsMYB80 in vitro. Overlap of the genes identified by RNA-seq and DAP-seq revealed 188 genes that were differentially regulated by OsMYB80 and also carried an OsMYB80-interacting DNA element in the promoter. Ten of these promoter elements were randomly selected for gel shift assay and yeast one-hybrid assay, and all showed OsMYB80 binding. The 10 promoters also showed OsMYB80-dependent induction when co-expressed in rice protoplast. Functional annotation of the 188 genes suggested that OsMYB80 regulates male fertility by directly targeting multiple biological processes. The identification of these genes significantly enriched the gene networks governing anther development and provided much new information for the understanding of pollen development and male fertility.
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Affiliation(s)
- Xiaoying Pan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
| | - Wei Yan
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
| | - Zhenyi Chang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
| | - Yingchao Xu
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Ming Luo
- Guangdong Provincial Key Laboratory of Applied Botany, Key Laboratory of South China Agricultural Plant Molecular Analysis and Genetic Improvement, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China
| | - Chunjue Xu
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
| | - Zhufeng Chen
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
- Corresponding authors: Xiaoyan Tang, E-mail, ; Fax, +86 020 85211372; Jianxin Wu, E-mail, ; Fax, +86 020 85211372; Zhufeng Chen; E-mail, ; Fax, + 86 2085211372
| | - Jianxin Wu
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Corresponding authors: Xiaoyan Tang, E-mail, ; Fax, +86 020 85211372; Jianxin Wu, E-mail, ; Fax, +86 020 85211372; Zhufeng Chen; E-mail, ; Fax, + 86 2085211372
| | - Xiaoyan Tang
- Guangdong Provincial Key Laboratory of Biotechnology for Plant Development, School of Life Sciences, South China Normal University, Guangzhou 510631, China
- Shenzhen Institute of Molecular Crop Design, Shenzhen 518107, China
- Corresponding authors: Xiaoyan Tang, E-mail, ; Fax, +86 020 85211372; Jianxin Wu, E-mail, ; Fax, +86 020 85211372; Zhufeng Chen; E-mail, ; Fax, + 86 2085211372
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Baune MC, Lansing H, Fischer K, Meyer T, Charton L, Linka N, von Schaewen A. The Arabidopsis Plastidial Glucose-6-Phosphate Transporter GPT1 is Dually Targeted to Peroxisomes via the Endoplasmic Reticulum. THE PLANT CELL 2020; 32:1703-1726. [PMID: 32111666 PMCID: PMC7203913 DOI: 10.1105/tpc.19.00959] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 01/28/2020] [Accepted: 02/28/2020] [Indexed: 05/22/2023]
Abstract
Studies on Glucose-6-phosphate (G6P)/phosphate translocator isoforms GPT1 and GPT2 reported the viability of Arabidopsis (Arabidopsis thaliana) gpt2 mutants, whereas heterozygous gpt1 mutants exhibited a variety of defects during fertilization/seed set, indicating that GPT1 is essential for this process. Among other functions, GPT1 was shown to be important for pollen and embryo-sac development. Because our previous work on the irreversible part of the oxidative pentose phosphate pathway (OPPP) revealed comparable effects, we investigated whether GPT1 may dually localize to plastids and peroxisomes. In reporter fusions, GPT2 localized to plastids, but GPT1 also localized to the endoplasmic reticulum (ER) and around peroxisomes. GPT1 contacted two oxidoreductases and also peroxins that mediate import of peroxisomal membrane proteins from the ER, hinting at dual localization. Reconstitution in yeast (Saccharomyces cerevisiae) proteoliposomes revealed that GPT1 preferentially exchanges G6P for ribulose-5-phosphate (Ru5P). Complementation analyses of heterozygous +/gpt1 plants demonstrated that GPT2 is unable to compensate for GPT1 in plastids, whereas GPT1 without the transit peptide (enforcing ER/peroxisomal localization) increased gpt1 transmission significantly. Because OPPP activity in peroxisomes is essential for fertilization, and immunoblot analyses hinted at the presence of unprocessed GPT1-specific bands, our findings suggest that GPT1 is indispensable in both plastids and peroxisomes. Together with its G6P-Ru5P exchange preference, GPT1 appears to play a role distinct from that of GPT2 due to dual targeting.
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Affiliation(s)
- Marie-Christin Baune
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - Hannes Lansing
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - Kerstin Fischer
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - Tanja Meyer
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
| | - Lennart Charton
- Biochemie der Pflanzen, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Nicole Linka
- Biochemie der Pflanzen, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany
| | - Antje von Schaewen
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, 48149 Münster, Germany
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13
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Castelli MA, Whiteley SL, Georges A, Holleley CE. Cellular calcium and redox regulation: the mediator of vertebrate environmental sex determination? Biol Rev Camb Philos Soc 2020; 95:680-695. [DOI: 10.1111/brv.12582] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Revised: 01/08/2020] [Accepted: 01/13/2020] [Indexed: 12/16/2022]
Affiliation(s)
- Meghan A. Castelli
- CSIROAustralian National Wildlife Collection, GPO Box 1700 Canberra 2601 Australia
- Institute for Applied EcologyUniversity of Canberra Canberra 2617 Australia
| | - Sarah L. Whiteley
- CSIROAustralian National Wildlife Collection, GPO Box 1700 Canberra 2601 Australia
- Institute for Applied EcologyUniversity of Canberra Canberra 2617 Australia
| | - Arthur Georges
- Institute for Applied EcologyUniversity of Canberra Canberra 2617 Australia
| | - Clare E. Holleley
- CSIROAustralian National Wildlife Collection, GPO Box 1700 Canberra 2601 Australia
- Institute for Applied EcologyUniversity of Canberra Canberra 2617 Australia
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14
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García-Quirós E, Alché JDD, Karpinska B, Foyer CH. Glutathione redox state plays a key role in flower development and pollen vigour. JOURNAL OF EXPERIMENTAL BOTANY 2020; 71:730-741. [PMID: 31557297 PMCID: PMC6946011 DOI: 10.1093/jxb/erz376] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2019] [Accepted: 08/10/2019] [Indexed: 05/04/2023]
Abstract
The importance of the glutathione pool in the development of reproductive tissues and in pollen tube growth was investigated in wild-type (WT) Arabidopsis thaliana, a reporter line expressing redox-sensitive green fluorescent protein (roGFP2), and a glutathione-deficient cad2-1 mutant (cad2-1/roGFP2). The cad2-1/roGFP2 flowers had significantly less reduced glutathione (GSH) and more glutathione disulfide (GSSG) than WT or roGFP2 flowers. The stigma, style, anther, germinated pollen grains, and pollen tubes of roGFP2 flowers had a low degree of oxidation. However, these tissues were more oxidized in cad2-1/roGFP2 flowers than the roGFP2 controls. The ungerminated pollen grains were significantly more oxidized than the germinated pollen grains, indicating that the pollen cells become reduced upon the transition from the quiescent to the metabolically active state during germination. The germination percentage was lower in cad2-1/roGFP2 pollen and pollen tube growth arrested earlier than in roGFP2 pollen, demonstrating that increased cellular reduction is essential for pollen tube growth. These findings establish that ungerminated pollen grains exist in a relatively oxidized state compared with germinating pollen grains. Moreover, failure to accumulate glutathione and maintain a high GSH/GSSG ratio has a strong negative effect on pollen germination.
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Affiliation(s)
- Estefanía García-Quirós
- Plant Reproductive Biology and Advanced Microscopy Laboratory, Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, CSIC, Granada, Spain
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
| | - Juan de Dios Alché
- Plant Reproductive Biology and Advanced Microscopy Laboratory, Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, CSIC, Granada, Spain
| | - Barbara Karpinska
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
| | - Christine H Foyer
- Plant Reproductive Biology and Advanced Microscopy Laboratory, Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, CSIC, Granada, Spain
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds, UK
- School of Biosciences, College of Life and Environmental Sciences, University of Birmingham, Birmingham, UK
- Correspondence:
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15
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Zhang MJ, Zhang XS, Gao XQ. ROS in the Male-Female Interactions During Pollination: Function and Regulation. FRONTIERS IN PLANT SCIENCE 2020; 11:177. [PMID: 32180782 PMCID: PMC7059789 DOI: 10.3389/fpls.2020.00177] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 02/05/2020] [Indexed: 05/18/2023]
Abstract
The male-female interactions in pollination mediate pollen hydration and germination, pollen tube growth and fertilization. Reactive oxygen species (ROS) derived from both male and female tissues play regulatory roles for the communication between the pollen/pollen tube and female tissues at various stages, such as pollen hydration and germination on the stigma, pollen tube growth in the pistil and pollen tube reception in the female gametophyte. In this minireview, we primarily summarize the recent progress on the roles of ROS signaling in male-female interactions during pollination and discuss several ROS-regulated downstream signaling pathways for these interactions. Furthermore, several ROS-involved downstream pathways are outlined, such as Ca2+ signaling, cell wall cytomechanics, the redox modification of CRP, and cell PCD. At the end, we address the roles of ROS in pollen tube guidance and fertilization as future questions that merit study.
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16
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Arabidopsis ABCG28 is required for the apical accumulation of reactive oxygen species in growing pollen tubes. Proc Natl Acad Sci U S A 2019; 116:12540-12549. [PMID: 31152136 DOI: 10.1073/pnas.1902010116] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Tip-focused accumulation of reactive oxygen species (ROS) is tightly associated with pollen tube growth and is thus critical for fertilization. However, it is unclear how tip-growing cells establish such specific ROS localization. Polyamines have been proposed to function in tip growth as precursors of the ROS, hydrogen peroxide. The ABC transporter AtABCG28 may regulate ROS status, as it contains multiple cysteine residues, a characteristic of proteins involved in ROS homeostasis. In this study, we found that AtABCG28 was specifically expressed in the mature pollen grains and pollen tubes. AtABCG28 was localized to secretory vesicles inside the pollen tube that moved toward and fused with the plasma membrane of the pollen tube tip. Knocking out AtABCG28 resulted in defective pollen tube growth, failure to localize polyamine and ROS to the growing pollen tube tip, and complete male sterility, whereas ectopic expression of this gene in root hair could recover ROS accumulation at the tip and improved the growth under high-pH conditions, which normally prevent ROS accumulation and tip growth. Together, these data suggest that AtABCG28 is critical for localizing polyamine and ROS at the growing tip. In addition, this function of AtABCG28 is likely to protect the pollen tube from the cytotoxicity of polyamine and contribute to the delivery of polyamine to the growing tip for incorporation into the expanding cell wall.
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Jimenez-Quesada MJ, Traverso JA, Potocký M, Žárský V, Alché JDD. Generation of Superoxide by OeRbohH, a NADPH Oxidase Activity During Olive ( Olea europaea L.) Pollen Development and Germination. FRONTIERS IN PLANT SCIENCE 2019; 10:1149. [PMID: 31608092 PMCID: PMC6761571 DOI: 10.3389/fpls.2019.01149] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 08/22/2019] [Indexed: 05/22/2023]
Abstract
Reactive oxygen species (ROS) are produced in the olive reproductive organs as the result of intense metabolism. ROS production and pattern of distribution depend on the developmental stage, supposedly playing a broad panel of functions, which include defense and signaling between pollen and pistil. Among ROS-producing mechanisms, plasma membrane NADPH-oxidase activity is being highlighted in plant tissues, and two enzymes of this type have been characterized in Arabidopsis thaliana pollen (RbohH and RbohJ), playing important roles in pollen physiology. Besides, pollen from different species has shown distinct ROS production mechanism and patterns of distribution. In the olive reproductive tissues, a significant production of superoxide has been described. However, the enzymes responsible for such generation are unknown. Here, we have identified an Rboh-type gene (OeRbohH), mainly expressed in olive pollen. OeRbohH possesses a high degree of identity with RbohH and RbohJ from Arabidopsis, sharing most structural features and motifs. Immunohistochemistry experiments allowed us to localize OeRbohH throughout pollen ontogeny as well as during pollen tube elongation. Furthermore, the balanced activity of tip-localized OeRbohH during pollen tube growth has been shown to be important for normal pollen physiology. This was evidenced by the fact that overexpression caused abnormal phenotypes, whereas incubation with specific NADPH oxidase inhibitor or gene knockdown lead to impaired ROS production and subsequent inhibition of pollen germination and pollen tube growth.
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Affiliation(s)
- María José Jimenez-Quesada
- Plant Reproductive Biology and Advanced Microscopy Laboratory, Department of Biochemistry, Cellular and Molecular Biology of Plants, Estación Experimental del Zaidín (CSIC), Granada, Spain
| | - José Angel Traverso
- Plant Reproductive Biology and Advanced Microscopy Laboratory, Department of Biochemistry, Cellular and Molecular Biology of Plants, Estación Experimental del Zaidín (CSIC), Granada, Spain
| | - Martin Potocký
- Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
| | - Viktor Žárský
- Institute of Experimental Botany of the Czech Academy of Sciences, Prague, Czechia
- Department of Experimental Plant Biology, Faculty of Science, Charles University in Prague, Prague, Czechia
| | - Juan de Dios Alché
- Plant Reproductive Biology and Advanced Microscopy Laboratory, Department of Biochemistry, Cellular and Molecular Biology of Plants, Estación Experimental del Zaidín (CSIC), Granada, Spain
- *Correspondence: Juan de Dios Alché,
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18
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Jegadeesan S, Chaturvedi P, Ghatak A, Pressman E, Meir S, Faigenboim A, Rutley N, Beery A, Harel A, Weckwerth W, Firon N. Proteomics of Heat-Stress and Ethylene-Mediated Thermotolerance Mechanisms in Tomato Pollen Grains. FRONTIERS IN PLANT SCIENCE 2018; 9:1558. [PMID: 30483278 PMCID: PMC6240657 DOI: 10.3389/fpls.2018.01558] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 10/04/2018] [Indexed: 05/19/2023]
Abstract
Heat stress is a major cause for yield loss in many crops, including vegetable crops. Even short waves of high temperature, becoming more frequent during recent years, can be detrimental. Pollen development is most heat-sensitive, being the main cause for reduced productivity under heat-stress across a wide range of crops. The molecular mechanisms involved in pollen heat-stress response and thermotolerance are however, not fully understood. Recently, we have demonstrated that ethylene, a gaseous plant hormone, plays a role in tomato (Solanum lycopersicum) pollen thermotolerance. These results were substantiated in the current work showing that increasing ethylene levels by using an ethylene-releasing substance, ethephon, prior to heat-stress exposure, increased pollen quality. A proteomic approach was undertaken, to unravel the mechanisms underlying pollen heat-stress response and ethylene-mediated pollen thermotolerance in developing pollen grains. Proteins were extracted and analyzed by means of a gel LC-MS fractionation protocol, and a total of 1,355 proteins were identified. A dataset of 721 proteins, detected in three biological replicates of at least one of the applied treatments, was used for all analyses. Quantitative analysis was performed based on peptide count. The analysis revealed that heat-stress affected the developmental program of pollen, including protein homeostasis (components of the translational and degradation machinery), carbohydrate, and energy metabolism. Ethephon-pre-treatment shifted the heat-stressed pollen proteome closer to the proteome under non-stressful conditions, namely, by showing higher abundance of proteins involved in protein synthesis, degradation, tricarboxylic acid cycle, and RNA regulation. Furthermore, up-regulation of protective mechanisms against oxidative stress was observed following ethephon-treatment (including higher abundance of glutathione-disulfide reductase, glutaredoxin, and protein disulfide isomerase). Taken together, the findings identified systemic and fundamental components of pollen thermotolerance, and serve as a valuable quantitative protein database for further research.
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Affiliation(s)
- Sridharan Jegadeesan
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
- The Robert H. Smith Faculty of Agriculture, Food and Environment, The Robert H. Smith Institute of Plant Sciences and Genetics in Agriculture of The Hebrew University of Jerusalem, Rehovot, Israel
| | - Palak Chaturvedi
- Department of Ecogenomics and Systems Biology, Faculty of Life Sciences, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center, University of Vienna, Vienna, Austria
| | - Arindam Ghatak
- Department of Ecogenomics and Systems Biology, Faculty of Life Sciences, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center, University of Vienna, Vienna, Austria
| | - Etan Pressman
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
| | - Shimon Meir
- Institute of Postharvest and Food Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
| | - Adi Faigenboim
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
| | - Nicholas Rutley
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
| | - Avital Beery
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
| | - Arye Harel
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
| | - Wolfram Weckwerth
- Department of Ecogenomics and Systems Biology, Faculty of Life Sciences, University of Vienna, Vienna, Austria
- Vienna Metabolomics Center, University of Vienna, Vienna, Austria
| | - Nurit Firon
- Institute of Plant Sciences, Agricultural Research Organization, Volcani Center, Rishon LeZion, Israel
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19
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Katano K, Honda K, Suzuki N. Integration between ROS Regulatory Systems and Other Signals in the Regulation of Various Types of Heat Responses in Plants. Int J Mol Sci 2018; 19:ijms19113370. [PMID: 30373292 PMCID: PMC6274784 DOI: 10.3390/ijms19113370] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 10/23/2018] [Accepted: 10/24/2018] [Indexed: 12/31/2022] Open
Abstract
Because of their sessile lifestyle, plants cannot escape from heat stress and are forced to alter their cellular state to prevent damage. Plants, therefore, evolved complex mechanisms to adapt to irregular increases in temperature in the natural environment. In addition to the ability to adapt to an abrupt increase in temperature, plants possess strategies to reprogram their cellular state during pre-exposure to sublethal heat stress so that they are able to survive under subsequent severe heat stress. Such an acclimatory response to heat, i.e., acquired thermotolerance, might depend on the maintenance of heat memory and propagation of long-distance signaling. In addition, plants are able to tailor their specific cellular state to adapt to heat stress combined with other abiotic stresses. Many studies revealed significant roles of reactive oxygen species (ROS) regulatory systems in the regulation of these various heat responses in plants. However, the mode of coordination between ROS regulatory systems and other pathways is still largely unknown. In this review, we address how ROS regulatory systems are integrated with other signaling networks to control various types of heat responses in plants. In addition, differences and similarities in heat response signals between different growth stages are also addressed.
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Affiliation(s)
- Kazuma Katano
- Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University, 7-1 Kioi-cho, Chiyoda, 102-8554 Tokyo, Japan.
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20
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Ju YL, Xu GQ, Yue XF, Zhao XF, Tu TY, Zhang JX, Fang YL. Effects of Regulated Deficit Irrigation on Amino Acid Profiles and Their Derived Volatile Compounds in Cabernet Sauvignon ( Vitis vinifera L.) Grapes and Wines. Molecules 2018; 23:E1983. [PMID: 30096898 PMCID: PMC6222330 DOI: 10.3390/molecules23081983] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Revised: 08/03/2018] [Accepted: 08/06/2018] [Indexed: 11/25/2022] Open
Abstract
Amino acid contents and their derived volatile compositions in Cabernet Sauvignon grapes and wines after regulated deficit irrigation (RDI) were investigated during the 2015 and 2016 growing seasons in Yinchuan (NingXia, China). High-performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS) were used for amino acid and volatile compound analyses. Three RDI strategies were tested: 60% (RDI-1), 70% (RDI-2), and 80% (RDI-3) of grapevine estimated evapotranspiration (ETc), and 100% ETc was used as the control group (CK). RDI-treated vines had lower yields and berry weights with higher total soluble solids than the control treatment. RDI-1 increased proline levels in berries and wines. RDI-2 enhanced tyrosine and asparagine levels in wines. RDI-3 enhanced arginine, alanine, valine, leucine, and isoleucine levels in berries and wines. RDI-2 and RDI-3 increased the concentrations of 2-methyl-1-butyl acetate, benzaldehyde, 3-methyl-1-pentanol, and 3-methyl-1-butanol in wines. The accumulation of volatile compounds was closely related to the amino acid concentrations-especially isoleucine, valine, and leucine-in grapes. Our results showed that RDI treatments altered amino acid concentrations and their derived volatile compositions in wines.
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Affiliation(s)
- Yan-Lun Ju
- College of Enology, Northwest A & F University, Yangling 712100, China.
| | - Guo-Qian Xu
- Ningxia Grape and Wine Research Institute, Ningxia University, Yinchuan 750000, China.
| | - Xiao-Feng Yue
- College of Enology, Northwest A & F University, Yangling 712100, China.
| | - Xian-Fang Zhao
- College of Enology, Northwest A & F University, Yangling 712100, China.
| | - Ting-Yao Tu
- College of Enology, Northwest A & F University, Yangling 712100, China.
| | - Jun-Xiang Zhang
- Ningxia Grape and Wine Research Institute, Ningxia University, Yinchuan 750000, China.
| | - Yu-Lin Fang
- College of Enology, Northwest A & F University, Yangling 712100, China.
- Shaanxi Engineering Research Center for Viti-Viniculture, Yangling 712100, China.
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21
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Suzuki N, Katano K. Coordination Between ROS Regulatory Systems and Other Pathways Under Heat Stress and Pathogen Attack. FRONTIERS IN PLANT SCIENCE 2018; 9:490. [PMID: 29713332 PMCID: PMC5911482 DOI: 10.3389/fpls.2018.00490] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 03/29/2018] [Indexed: 05/18/2023]
Abstract
Regulatory systems of reactive oxygen species (ROS) are known to be integrated with other pathways involving Ca2+ signaling, protein kinases, hormones and programmed cell death (PCD) pathways to regulate defense mechanisms in plants. Coordination between ROS regulatory systems and other pathways needs to be flexibly modulated to finely tune the mechanisms underlying responses of different types of tissues to heat stress, biotic stresses and their combinations during different growth stages. Especially, modulation of the delicate balance between ROS-scavenging and producing systems in reproductive tissues could be essential, because ROS-dependent PCD is required for the proper fertilization, despite the necessity of ROS scavenging to prevent the damage on cells under heat stress and biotic stresses. In this review, we will update the recent findings associated with coordination between multiple pathways under heat stress, pathogen attack and their combinations. In addition, possible integrations between different signals function in different tissues via ROS-dependent long-distance signals will be proposed.
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22
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Muñoz-Sanz JV, Zuriaga E, Badenes ML, Romero C. A disulfide bond A-like oxidoreductase is a strong candidate gene for self-incompatibility in apricot (Prunus armeniaca) pollen. JOURNAL OF EXPERIMENTAL BOTANY 2017; 68:5069-5078. [PMID: 29036710 PMCID: PMC5853662 DOI: 10.1093/jxb/erx336] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Accepted: 09/14/2017] [Indexed: 05/21/2023]
Abstract
S-RNase based gametophytic self-incompatibility (SI) is a widespread prezygotic reproductive barrier in flowering plants. In the Solanaceae, Plantaginaceae and Rosaceae gametophytic SI is controlled by the pistil-specific S-RNases and the pollen S-locus F-box proteins but non-S-specific factors, namely modifiers, are also required. In apricot, Prunus armeniaca (Rosaceae), we previously mapped two pollen-part mutations that confer self-compatibility in cultivars Canino and Katy at the distal end of chromosome 3 (M-locus) unlinked to the S-locus. Here, we used high-resolution mapping to identify the M-locus with an ~134 kb segment containing ParM-1-16 genes. Gene expression analysis identified four genes preferentially expressed in anthers as modifier gene candidates, ParM-6, -7, -9 and -14. Variant calling of WGS Illumina data from Canino, Katy, and 10 self-incompatible cultivars detected a 358 bp miniature inverted-repeat transposable element (MITE) insertion in ParM-7 shared only by self-compatible apricots, supporting ParM-7 as strong candidate gene required for SI. ParM-7 encodes a disulfide bond A-like oxidoreductase protein, which we named ParMDO. The MITE insertion truncates the ParMDO ORF and produces a loss of SI function, suggesting that pollen rejection in Prunus is dependent on redox regulation. Based on phylogentic analyses we also suggest that ParMDO may have originated from a tandem duplication followed by subfunctionalization and pollen-specific expression.
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Affiliation(s)
- Juan Vicente Muñoz-Sanz
- Fruit Tree Breeding Department. Instituto Valenciano de Investigaciones Agrarias (IVIA). CV-315, Km. 10, Moncada (Valencia), Spain
| | - Elena Zuriaga
- Fruit Tree Breeding Department. Instituto Valenciano de Investigaciones Agrarias (IVIA). CV-315, Km. 10, Moncada (Valencia), Spain
| | - María L Badenes
- Fruit Tree Breeding Department. Instituto Valenciano de Investigaciones Agrarias (IVIA). CV-315, Km. 10, Moncada (Valencia), Spain
| | - Carlos Romero
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Universidad Politécnica de Valencia-Consejo Superior de Investigaciones Científicas. C/Ingeniero Fausto Elio s/n, Valencia, Spain
- Correspondence:
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23
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Ju YL, Liu M, Tu TY, Zhao XF, Yue XF, Zhang JX, Fang YL, Meng JF. Effect of regulated deficit irrigation on fatty acids and their derived volatiles in 'Cabernet Sauvignon' grapes and wines of Ningxia, China. Food Chem 2017; 245:667-675. [PMID: 29287424 DOI: 10.1016/j.foodchem.2017.10.018] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2017] [Revised: 09/29/2017] [Accepted: 10/06/2017] [Indexed: 01/09/2023]
Abstract
The effect of regulated deficit irrigation (RDI) on fatty acids and their derived volatiles in 'Cabernet Sauvignon' grapes and wines was investigated during two growing seasons in the east foot of Mt. Helan, the semi-arid area. The vines received water with 60% (RDI-1), 70% (RDI-2), 80% (RDI-3), 100% (CK, traditional drip irrigation) of their estimated evapotranspiration (ETc) respectively. RDI treatments resulted in lower yield, berry weight and titratable acidity with higher total soluble solids. RDI-1 increased the content of unsaturated fatty acids in berries and decreased the level of alcohols and esters volatiles in wines. RDI-2 and RDI-3 enhanced 1-hexanol and esters in wines in comparison with CK. The concentrations of C6 aroma compounds were closely correlated with unsaturated fatty acids (p < .05), especially linolenic acid and linoleic acid. The present results provided direct evidence and detailed data to explain the effect of RDI on grapes and wines composition regarding fatty acids and their derived volatiles.
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Affiliation(s)
- Yan-Lun Ju
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Min Liu
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Ting-Yao Tu
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xian-Fang Zhao
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Xiao-Feng Yue
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Jun-Xiang Zhang
- Ningxia Grape and Wine Research Institute, Ningxia University, Yinchuan, Ningxia 750000, China
| | - Yu-Lin Fang
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China; Shaanxi Engineering Research Center for Viti-Viniculture, Yangling 712100, Shaanxi, China.
| | - Jiang-Fei Meng
- College of Enology, Northwest A&F University, Yangling, Shaanxi 712100, China; Shaanxi Engineering Research Center for Viti-Viniculture, Yangling 712100, Shaanxi, China.
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Pérez-Pérez ME, Mauriès A, Maes A, Tourasse NJ, Hamon M, Lemaire SD, Marchand CH. The Deep Thioredoxome in Chlamydomonas reinhardtii: New Insights into Redox Regulation. MOLECULAR PLANT 2017; 10:1107-1125. [PMID: 28739495 DOI: 10.1016/j.molp.2017.07.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2017] [Revised: 07/04/2017] [Accepted: 07/11/2017] [Indexed: 05/20/2023]
Abstract
Thiol-based redox post-translational modifications have emerged as important mechanisms of signaling and regulation in all organisms, and thioredoxin plays a key role by controlling the thiol-disulfide status of target proteins. Recent redox proteomic studies revealed hundreds of proteins regulated by glutathionylation and nitrosylation in the unicellular green alga Chlamydomonas reinhardtii, while much less is known about the thioredoxin interactome in this organism. By combining qualitative and quantitative proteomic analyses, we have comprehensively investigated the Chlamydomonas thioredoxome and 1188 targets have been identified. They participate in a wide range of metabolic pathways and cellular processes. This study broadens not only the redox regulation to new enzymes involved in well-known thioredoxin-regulated metabolic pathways but also sheds light on cellular processes for which data supporting redox regulation are scarce (aromatic amino acid biosynthesis, nuclear transport, etc). Moreover, we characterized 1052 thioredoxin-dependent regulatory sites and showed that these data constitute a valuable resource for future functional studies in Chlamydomonas. By comparing this thioredoxome with proteomic data for glutathionylation and nitrosylation at the protein and cysteine levels, this work confirms the existence of a complex redox regulation network in Chlamydomonas and provides evidence of a tremendous selectivity of redox post-translational modifications for specific cysteine residues.
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Affiliation(s)
- María Esther Pérez-Pérez
- Institut de Biologie Physico-Chimique, UMR8226, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 13 rue Pierre et Marie Curie, 75005 Paris, France
| | - Adeline Mauriès
- Institut de Biologie Physico-Chimique, UMR8226, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 13 rue Pierre et Marie Curie, 75005 Paris, France
| | - Alexandre Maes
- Institut de Biologie Physico-Chimique, UMR8226, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 13 rue Pierre et Marie Curie, 75005 Paris, France
| | - Nicolas J Tourasse
- Institut de Biologie Physico-Chimique, Plateforme de Protéomique, FRC550, CNRS, 13 rue Pierre et Marie Curie, 75005 Paris, France
| | - Marion Hamon
- Institut de Biologie Physico-Chimique, UMR8226, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 13 rue Pierre et Marie Curie, 75005 Paris, France; Institut de Biologie Physico-Chimique, Plateforme de Protéomique, FRC550, CNRS, 13 rue Pierre et Marie Curie, 75005 Paris, France
| | - Stéphane D Lemaire
- Institut de Biologie Physico-Chimique, UMR8226, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 13 rue Pierre et Marie Curie, 75005 Paris, France.
| | - Christophe H Marchand
- Institut de Biologie Physico-Chimique, UMR8226, CNRS, Sorbonne Universités, UPMC Univ Paris 06, 13 rue Pierre et Marie Curie, 75005 Paris, France; Institut de Biologie Physico-Chimique, Plateforme de Protéomique, FRC550, CNRS, 13 rue Pierre et Marie Curie, 75005 Paris, France.
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Mittler R. ROS Are Good. TRENDS IN PLANT SCIENCE 2017; 22:11-19. [PMID: 27666517 DOI: 10.1016/j.tplants.2016.08.002] [Citation(s) in RCA: 1432] [Impact Index Per Article: 204.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 07/29/2016] [Accepted: 08/07/2016] [Indexed: 05/17/2023]
Abstract
Reactive oxygen species (ROS) are thought to play a dual role in plant biology. They are required for many important signaling reactions, but are also toxic byproducts of aerobic metabolism. Recent studies revealed that ROS are necessary for the progression of several basic biological processes including cellular proliferation and differentiation. Moreover, cell death-that was previously thought to be the outcome of ROS directly killing cells by oxidation, in other words via oxidative stress-is now considered to be the result of ROS triggering a physiological or programmed pathway for cell death. This Opinion focuses on the possibility that ROS are beneficial to plants, supporting cellular proliferation, physiological function, and viability, and that maintaining a basal level of ROS in cells is essential for life.
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Affiliation(s)
- Ron Mittler
- Department of Biological Sciences and BioDiscovery Institute, College of Arts and Sciences, University of North Texas, 1155 Union Circle #305220, Denton, TX 76203, USA.
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Effect of Exogenous Abscisic Acid and Methyl Jasmonate on Anthocyanin Composition, Fatty Acids, and Volatile Compounds of Cabernet Sauvignon (Vitis vinifera L.) Grape Berries. Molecules 2016; 21:molecules21101354. [PMID: 27754331 PMCID: PMC6273220 DOI: 10.3390/molecules21101354] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 10/04/2016] [Accepted: 10/08/2016] [Indexed: 11/24/2022] Open
Abstract
The anthocyanin composition, fatty acids, and volatile aromas are important for Cabernet Sauvignon grape quality. This study evaluated the effect of exogenous abscisic acid (ABA) and methyl jasmonate (MeJA) on the anthocyanin composition, fatty acids, lipoxygenase activity, and the volatile compounds of Cabernet Sauvignon grape berries. Exogenous ABA and MeJA improved the content of total anthocyanins (TAC) and individual anthocyanins. Lipoxygenase (LOX) activity also increased after treatment. Furthermore, 16 fatty acids were detected. The linoleic acid concentration gradually increased with ABA concentration. The fatty acid content decreased with increasing MeJA concentration and then increased again, with the exception of linoleic acid. After exogenous ABA and MeJA treatment, the C6 aroma content increased significantly. Interestingly, the exogenous ABA and MeJA treatments improved mainly the content of 1-hexanol, hexanal, and 2-heptanol. These results provide insight into the effect of plant hormones on wine grapes, which is useful for grape quality improvement.
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Hölscher C, Lutterbey MC, Lansing H, Meyer T, Fischer K, von Schaewen A. Defects in Peroxisomal 6-Phosphogluconate Dehydrogenase Isoform PGD2 Prevent Gametophytic Interaction in Arabidopsis thaliana. PLANT PHYSIOLOGY 2016; 171:192-205. [PMID: 26941195 PMCID: PMC4854672 DOI: 10.1104/pp.15.01301] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2015] [Accepted: 03/02/2016] [Indexed: 05/21/2023]
Abstract
We studied the localization of 6-phosphogluconate dehydrogenase (PGD) isoforms of Arabidopsis (Arabidopsis thaliana). Similar polypeptide lengths of PGD1, PGD2, and PGD3 obscured which isoform may represent the cytosolic and/or plastidic enzyme plus whether PGD2 with a peroxisomal targeting motif also might target plastids. Reporter-fusion analyses in protoplasts revealed that, with a free N terminus, PGD1 and PGD3 accumulate in the cytosol and chloroplasts, whereas PGD2 remains in the cytosol. Mutagenesis of a conserved second ATG enhanced the plastidic localization of PGD1 and PGD3 but not PGD2. Amino-terminal deletions of PGD2 fusions with a free C terminus resulted in peroxisomal import after dimerization, and PGD2 could be immunodetected in purified peroxisomes. Repeated selfing of pgd2 transfer (T-)DNA alleles yielded no homozygous mutants, although siliques and seeds of heterozygous plants developed normally. Detailed analyses of the C-terminally truncated PGD2-1 protein showed that peroxisomal import and catalytic activity are abolished. Reciprocal backcrosses of pgd2-1 suggested that missing PGD activity in peroxisomes primarily affects the male gametophyte. Tetrad analyses in the quartet1-2 background revealed that pgd2-1 pollen is vital and in vitro germination normal, but pollen tube growth inside stylar tissues appeared less directed. Mutual gametophytic sterility was overcome by complementation with a genomic construct but not with a version lacking the first ATG. These analyses showed that peroxisomal PGD2 activity is required for guided growth of the male gametophytes and pollen tube-ovule interaction. Our report finally demonstrates an essential role of oxidative pentose-phosphate pathway reactions in peroxisomes, likely needed to sustain critical levels of nitric oxide and/or jasmonic acid, whose biosynthesis both depend on NADPH provision.
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Affiliation(s)
- Christian Hölscher
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany
| | - Marie-Christin Lutterbey
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany
| | - Hannes Lansing
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany
| | - Tanja Meyer
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany
| | - Kerstin Fischer
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany
| | - Antje von Schaewen
- Institut für Biologie und Biotechnologie der Pflanzen, Westfälische Wilhelms-Universität Münster, Schlossplatz 7, D-48149 Münster, Germany
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Tahir J, Dijkwel P. β-Substituting alanine synthases: roles in cysteine metabolism and abiotic and biotic stress signalling in plants. FUNCTIONAL PLANT BIOLOGY : FPB 2016; 43:307-323. [PMID: 32480463 DOI: 10.1071/fp15272] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2015] [Accepted: 12/10/2015] [Indexed: 06/11/2023]
Abstract
Cysteine is required for the synthesis of proteins and metabolites, and is therefore an indispensable compound for growth and development. The β-substituting alanine synthase (BSAS) gene family encodes enzymes known as O-acetylserine thiol lyases (OASTLs), which carry out cysteine biosynthesis in plants. The functions of the BSAS isoforms have been reported to be crucial in assimilation of S and cysteine biosynthesis, and homeostasis in plants. In this review we explore the functional variation in this classic pyridoxal-phosphate-dependent enzyme family of BSAS isoforms. We discuss how specialisation and divergence in BSAS catalytic activities makes a more dynamic set of biological routers that integrate cysteine metabolism and abiotic and biotic stress signalling in Arabidopsis thaliana (L.) Heynh. and also other species. Our review presents a universal scenario in which enzymes modulating cysteine metabolism promote survival and fitness of the species by counteracting internal and external stress factors.
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Affiliation(s)
- Jibran Tahir
- Institute of Fundamental Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand
| | - Paul Dijkwel
- Institute of Fundamental Sciences, Massey University, Private Bag 11222, Palmerston North, New Zealand
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Lora J, Hormaza JI, Herrero M. The Diversity of the Pollen Tube Pathway in Plants: Toward an Increasing Control by the Sporophyte. FRONTIERS IN PLANT SCIENCE 2016; 7:107. [PMID: 26904071 PMCID: PMC4746263 DOI: 10.3389/fpls.2016.00107] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Accepted: 01/20/2016] [Indexed: 05/06/2023]
Abstract
Plants, unlike animals, alternate multicellular diploid, and haploid generations in their life cycle. While this is widespread all along the plant kingdom, the size and autonomy of the diploid sporophyte and the haploid gametophyte generations vary along evolution. Vascular plants show an evolutionary trend toward a reduction of the gametophyte, reflected both in size and lifespan, together with an increasing dependence from the sporophyte. This has resulted in an overlooking of the importance of the gametophytic phase in the evolution of higher plants. This reliance on the sporophyte is most notorious along the pollen tube journey, where the male gametophytes have to travel a long way inside the sporophyte to reach the female gametophyte. Along evolution, there is a change in the scenery of the pollen tube pathway that favors pollen competition and selection. This trend, toward apparently making complicated what could be simple, appears to be related to an increasing control of the sporophyte over the gametophyte with implications for understanding plant evolution.
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Affiliation(s)
- Jorge Lora
- Department of Subtropical Fruit Crops, Instituto de Hortofruticultura Subtropical y Mediterránea La Mayora – University of Málaga – Consejo Superior de Investigaciones CientíficasMálaga, Spain
| | - José I. Hormaza
- Department of Subtropical Fruit Crops, Instituto de Hortofruticultura Subtropical y Mediterránea La Mayora – University of Málaga – Consejo Superior de Investigaciones CientíficasMálaga, Spain
| | - María Herrero
- Department of Pomology, Estación Experimental Aula Dei, Consejo Superior de Investigaciones CientíficasZaragoza, Spain
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30
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Zinta G, Khan A, AbdElgawad H, Verma V, Srivastava AK. Unveiling the Redox Control of Plant Reproductive Development during Abiotic Stress. FRONTIERS IN PLANT SCIENCE 2016; 7:700. [PMID: 27379102 PMCID: PMC4909749 DOI: 10.3389/fpls.2016.00700] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2016] [Accepted: 05/06/2016] [Indexed: 05/19/2023]
Abstract
Plants being sessile in nature are often challenged to various abiotic stresses including temperature fluctuations, water supply, salinity, and nutrient availability. Exposure of plants to such environmental perturbations result in the formation of reactive oxygen species (ROS) in cells. To scavenge ROS, enzymatic and molecular antioxidants are produced at a cellular level. ROS act as a signaling entity at lower concentrations maintaining normal growth and development, but if their levels increase beyond certain threshold, they produce toxic effects in plants. Some developmental stages, such as development of reproductive organs are more sensitive to abiotic stress than other stages of growth. As success of plant reproductive development is directly correlated with grain yield, stresses coinciding with reproductive phase results in the higher yield losses. In this article, we summarize the redox control of plant reproductive development, and elaborate how redox homeostasis is compromised during abiotic stress exposure. We highlight why more emphasis should be given to understand redox control of plant reproductive organ development during abiotic stress exposure96to engineer crops with better crop yield. We specifically discuss the role of ROS as a signaling molecule and its cross-talk with other signaling molecules such as hormones and sugars.
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Affiliation(s)
- Gaurav Zinta
- Centre of Excellence Plant and Vegetation Ecology, Department of Biology, University of AntwerpAntwerp, Belgium
- Integrated Molecular Plant Physiology Research, Department of Biology, University of AntwerpAntwerp, Belgium
- *Correspondence: Gaurav Zinta
| | - Asif Khan
- Research Group Germline Biology, Centre for Organismal Studies Heidelberg, University of HeidelbergHeidelberg, Germany
- Asif Khan
| | - Hamada AbdElgawad
- Integrated Molecular Plant Physiology Research, Department of Biology, University of AntwerpAntwerp, Belgium
- Department of Botany, Faculty of Science, University of Beni-SuefBeni-Suef, Egypt
| | - Vipasha Verma
- Department of Biotechnology, Dr Y S Parmar University of Horticulture and ForestrySolan, India
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Zafra A, Rejón JD, Hiscock SJ, Alché JDD. Patterns of ROS Accumulation in the Stigmas of Angiosperms and Visions into Their Multi-Functionality in Plant Reproduction. FRONTIERS IN PLANT SCIENCE 2016; 7:1112. [PMID: 27547207 PMCID: PMC4974276 DOI: 10.3389/fpls.2016.01112] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/20/2016] [Accepted: 07/13/2016] [Indexed: 05/20/2023]
Abstract
Accumulation of reactive oxygen species (ROS) in the stigma of several plant species has been investigated. Four developmental stages (unopened flower buds, recently opened flowers, dehiscent anthers, and flowers after fertilization) were analyzed by confocal laser scanning microscopy using the ROS-specific probe DCFH2-DA. In all plants scrutinized, the presence of ROS in the stigmas was detected at higher levels during those developmental phases considered "receptive" to pollen interaction. In addition, these molecules were also present at early (unopened flower) or later (post-fertilization) stages, by following differential patterns depending on the different species. The biological significance of the presence ROS may differ between these stages, including defense functions, signaling and senescence. Pollen-stigma signaling is likely involved in the different mechanisms of self-incompatibility in these plants. The study also register a general decrease in the presence of ROS in the stigmas upon pollination, when NO is supposedly produced in an active manner by pollen grains. Finally, the distribution of ROS in primitive Angiosperms of the genus Magnolia was determined. The production of such chemical species in these plants was several orders of magnitude higher than in the remaining species evoking a massive displacement toward the defense function. This might indicate that signaling functions of ROS/NO in the stigma evolved later, as fine tune likely involved in specialized interactions like self-incompatibility.
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Affiliation(s)
- Adoración Zafra
- Plant Reproductive Biology Laboratory, Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, Consejo Superior de Investigaciones CientíficasGranada, Spain
| | - Juan D. Rejón
- Plant Reproductive Biology Laboratory, Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, Consejo Superior de Investigaciones CientíficasGranada, Spain
| | | | - Juan de Dios Alché
- Plant Reproductive Biology Laboratory, Department of Biochemistry, Cell and Molecular Biology of Plants, Estación Experimental del Zaidín, Consejo Superior de Investigaciones CientíficasGranada, Spain
- *Correspondence: Juan de Dios Alché,
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Abstract
Cyclic electron flow (CEF) around photosystem I is thought to balance the ATP/NADPH energy budget of photosynthesis, requiring that its rate be finely regulated. The mechanisms of this regulation are not well understood. We observed that mutants that exhibited constitutively high rates of CEF also showed elevated production of H2O2. We thus tested the hypothesis that CEF can be activated by H2O2 in vivo. CEF was strongly increased by H2O2 both by infiltration or in situ production by chloroplast-localized glycolate oxidase, implying that H2O2 can activate CEF either directly by redox modulation of key enzymes, or indirectly by affecting other photosynthetic processes. CEF appeared with a half time of about 20 min after exposure to H2O2, suggesting activation of previously expressed CEF-related machinery. H2O2-dependent CEF was not sensitive to antimycin A or loss of PGR5, indicating that increased CEF probably does not involve the PGR5-PGRL1 associated pathway. In contrast, the rise in CEF was not observed in a mutant deficient in the chloroplast NADPH:PQ reductase (NDH), supporting the involvement of this complex in CEF activated by H2O2. We propose that H2O2 is a missing link between environmental stress, metabolism, and redox regulation of CEF in higher plants.
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Chen S, Zhang R, Hao L, Chen W, Cheng S. Profiling of volatile compounds and associated gene expression and enzyme activity during fruit development in two cucumber cultivars. PLoS One 2015; 10:e0119444. [PMID: 25799542 PMCID: PMC4370779 DOI: 10.1371/journal.pone.0119444] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2014] [Accepted: 01/30/2015] [Indexed: 01/12/2023] Open
Abstract
Changes in volatile content, as well as associated gene expression and enzyme activity in developing cucumber fruits were investigated in two Cucumis sativus L. lines (No. 26 and No. 14) that differ significantly in fruit flavor. Total volatile, six-carbon (C6) aldehyde, linolenic and linoleic acid content were higher during the early stages, whereas the nine-carbon (C9) aldehyde content was higher during the latter stages in both lines. Expression of C. sativus hydroperoxide lyase (CsHPL) mirrored 13-hydroperoxide lyase (13-HPL) enzyme activity in variety No. 26, whereas CsHPL expression was correlated with 9-hydroperoxide lyase (9-HPL) enzyme activity in cultivar No. 14. 13-HPL activity decreased significantly, while LOX (lipoxygenase) and 9-HPL activity increased along with fruit ripening in both lines, which accounted for the higher C6 and C9 aldehyde content at 0-6 day post anthesis (dpa) and 9-12 dpa, respectively. Volatile compounds from fruits at five developmental stages were analyzed by principal component analysis (PCA), and heatmaps of volatile content, gene expression and enzyme activity were constructed.
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Affiliation(s)
- Shuxia Chen
- College of Horticulture, Northwest A&F University/Key Laboratory of Horticultural Plant Germplasm Resources Utilization in Northwest China, Yangling, Shaanxi, China
- * E-mail:
| | - Ranran Zhang
- College of Horticulture, Northwest A&F University/Key Laboratory of Horticultural Plant Germplasm Resources Utilization in Northwest China, Yangling, Shaanxi, China
| | - Lining Hao
- College of Horticulture, Northwest A&F University/Key Laboratory of Horticultural Plant Germplasm Resources Utilization in Northwest China, Yangling, Shaanxi, China
| | - Weifeng Chen
- College of Horticulture, Northwest A&F University/Key Laboratory of Horticultural Plant Germplasm Resources Utilization in Northwest China, Yangling, Shaanxi, China
| | - Siqiong Cheng
- College of Horticulture, Northwest A&F University/Key Laboratory of Horticultural Plant Germplasm Resources Utilization in Northwest China, Yangling, Shaanxi, China
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Involvement of thiol-based mechanisms in plant development. Biochim Biophys Acta Gen Subj 2015; 1850:1479-96. [PMID: 25676896 DOI: 10.1016/j.bbagen.2015.01.023] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Revised: 01/08/2015] [Accepted: 01/10/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND Increasing knowledge has been recently gained regarding the redox regulation of plant developmental stages. SCOPE OF VIEW The current state of knowledge concerning the involvement of glutathione, glutaredoxins and thioredoxins in plant development is reviewed. MAJOR CONCLUSIONS The control of the thiol redox status is mainly ensured by glutathione (GSH), a cysteine-containing tripeptide and by reductases sharing redox-active cysteines, glutaredoxins (GRXs) and thioredoxins (TRXs). Indeed, thiol groups present in many regulatory proteins and metabolic enzymes are prone to oxidation, ultimately leading to post-translational modifications such as disulfide bond formation or glutathionylation. This review focuses on the involvement of GSH, GRXs and TRXs in plant development. Recent studies showed that the proper functioning of root and shoot apical meristems depends on glutathione content and redox status, which regulate, among others, cell cycle and hormone-related processes. A critical role of GRXs in the formation of floral organs has been uncovered, likely through the redox regulation of TGA transcription factor activity. TRXs fulfill many functions in plant development via the regulation of embryo formation, the control of cell-to-cell communication, the mobilization of seed reserves, the biogenesis of chloroplastic structures, the metabolism of carbon and the maintenance of cell redox homeostasis. This review also highlights the tight relationships between thiols, hormones and carbon metabolism, allowing a proper development of plants in relation with the varying environment and the energy availability. GENERAL SIGNIFICANCE GSH, GRXs and TRXs play key roles during the whole plant developmental cycle via their antioxidant functions and the redox-regulation of signaling pathways. This article is part of a Special Issue entitled Redox regulation of differentiation and de-differentiation.
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Nazemof N, Couroux P, Rampitsch C, Xing T, Robert LS. Proteomic profiling reveals insights into Triticeae stigma development and function. JOURNAL OF EXPERIMENTAL BOTANY 2014; 65:6069-80. [PMID: 25170101 PMCID: PMC4203142 DOI: 10.1093/jxb/eru350] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
To our knowledge, this study represents the first high-throughput characterization of a stigma proteome in the Triticeae. A total of 2184 triticale mature stigma proteins were identified using three different gel-based approaches combined with mass spectrometry. The great majority of these proteins are described in a Triticeae stigma for the first time. These results revealed many proteins likely to play important roles in stigma development and pollen-stigma interactions, as well as protection against biotic and abiotic stresses. Quantitative comparison of the triticale stigma transcriptome and proteome showed poor correlation, highlighting the importance of having both types of analysis. This work makes a significant contribution towards the elucidation of the Triticeae stigma proteome and provides novel insights into its role in stigma development and function.
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Affiliation(s)
- Nazila Nazemof
- Agriculture and Agri-Food Canada, Eastern Cereal and Oilseed Research Centre, 960 Carling Avenue, Ottawa, ON, Canada K1A 0C6 Carleton University, Department of Biology, 1125 Colonel By Drive, Ottawa, ON, Canada K1S 5B6
| | - Philippe Couroux
- Agriculture and Agri-Food Canada, Eastern Cereal and Oilseed Research Centre, 960 Carling Avenue, Ottawa, ON, Canada K1A 0C6
| | - Christof Rampitsch
- Agriculture and Agri-Food Canada, Cereal Research Centre, 101 Route 100, Morden, MB, Canada R6M 1Y5
| | - Tim Xing
- Carleton University, Department of Biology, 1125 Colonel By Drive, Ottawa, ON, Canada K1S 5B6
| | - Laurian S Robert
- Agriculture and Agri-Food Canada, Eastern Cereal and Oilseed Research Centre, 960 Carling Avenue, Ottawa, ON, Canada K1A 0C6
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Leaf rolling and stem fasciation in grass pea (Lathyrus sativus L.) mutant are mediated through glutathione-dependent cellular and metabolic changes and associated with a metabolic diversion through cysteine during phenotypic reversal. BIOMED RESEARCH INTERNATIONAL 2014; 2014:479180. [PMID: 24987684 PMCID: PMC4058490 DOI: 10.1155/2014/479180] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Accepted: 04/24/2014] [Indexed: 11/17/2022]
Abstract
A Lathyrus sativus L. mutant isolated in ethylmethane sulfonate-treated M2 progeny of mother variety BioL-212 and designated as rlfL-1 was characterized by inwardly rolled-leaf and stem and bud fasciations. The mutant exhibited karyomorphological peculiarities in both mitosis and meiosis with origin of aneuploidy. The mitosis was vigorous with high frequency of divisional cells and their quick turnover presumably steered cell proliferations. Significant transcriptional upregulations of cysteine and glutathione synthesis and concomitant stimulations of glutathione-mediated antioxidant defense helped rlfL-1 mutant to maintain balanced reactive oxygen species (ROS) metabolisms, as deduced by ROS-imaging study. Glutathione synthesis was shut down in buthionine sulfoximine- (BSO-) treated mother plant and mutant, and leaf-rolling and stems/buds fasciations in the mutant were reversed, accompanied by normalization of mitotic cell division process. Antioxidant defense was downregulated under low glutathione-redox but cysteine-desulfurations and photorespiratory glycolate oxidase transcripts were markedly overexpressed, preventing cysteine overaccumulation but resulted in excess H2O2 in BSO-treated mutant. This led to oxidative damage in proliferating cells, manifested by severe necrosis in rolled-leaf and fasciated stems. Results indicated vital role of glutathione in maintaining abnormal proliferations in plant organs, and its deficiency triggered phenotypic reversal through metabolic diversions of cysteine and concomitant cellular and metabolic modulations.
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Ávila-Castañeda A, Juárez-Díaz JA, Rodríguez-Sotres R, Bravo-Alberto CE, Ibarra-Sánchez CP, Zavala-Castillo A, Cruz-Zamora Y, Martínez-Castilla LP, Márquez-Guzmán J, Cruz-García F. A novel motif in the NaTrxh N-terminus promotes its secretion, whereas the C-terminus participates in its interaction with S-RNase in vitro. BMC PLANT BIOLOGY 2014; 14:147. [PMID: 24886483 PMCID: PMC4065587 DOI: 10.1186/1471-2229-14-147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/24/2014] [Accepted: 05/12/2014] [Indexed: 06/03/2023]
Abstract
BACKGROUND NaTrxh, a thioredoxin type h, shows differential expression between self-incompatible and self-compatible Nicotiana species. NaTrxh interacts in vitro with S-RNase and co-localizes with it in the extracellular matrix of the stylar transmitting tissue. NaTrxh contains N- and C-terminal extensions, a feature shared by thioredoxin h proteins of subgroup 2. To ascertain the function of these extensions in NaTrxh secretion and protein-protein interaction, we performed a deletion analysis on NaTrxh and fused the resulting variants to GFP. RESULTS We found an internal domain in the N-terminal extension, called Nβ, that is essential for NaTrxh secretion but is not hydrophobic, a canonical feature of a signal peptide. The lack of hydrophobicity as well as the location of the secretion signal within the NaTrxh primary structure, suggest an unorthodox secretion route for NaTrxh. Notably, we found that the fusion protein NaTrxh-GFP(KDEL) is retained in the endoplasmic reticulum and that treatment of NaTrxh-GFP-expressing cells with Brefeldin A leads to its retention in the Golgi, which indicates that NaTrxh uses, to some extent, the endoplasmic reticulum and Golgi apparatus for secretion. Furthermore, we found that Nβ contributes to NaTrxh tertiary structure stabilization and that the C-terminus functions in the protein-protein interaction with S-RNase. CONCLUSIONS The extensions contained in NaTrxh sequence have specific functions on the protein. While the C-terminus directly participates in protein-protein interaction, particularly on its interaction with S-RNase in vitro; the N-terminal extension contains two structurally different motifs: Nα and Nβ. Nβ, the inner domain (Ala-17 to Pro-27), is essential and enough to target NaTrxh towards the apoplast. Interestingly, when it was fused to GFP, this protein was also found in the cell wall of the onion cells. Although the biochemical features of the N-terminus suggested a non-classical secretion pathway, our results provided evidence that NaTrxh at least uses the endoplasmic reticulum, Golgi apparatus and also vesicles for secretion. Therefore, the Nβ domain sequence is suggested to be a novel signal peptide.
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Affiliation(s)
- Alejandra Ávila-Castañeda
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
| | - Javier Andrés Juárez-Díaz
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
| | - Rogelio Rodríguez-Sotres
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
| | - Carlos E Bravo-Alberto
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
| | - Claudia Patricia Ibarra-Sánchez
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
| | - Alejandra Zavala-Castillo
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
| | - Yuridia Cruz-Zamora
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
| | - León P Martínez-Castilla
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
| | - Judith Márquez-Guzmán
- Departamento de Biología Comparada, Facultad de Ciencias, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
| | - Felipe Cruz-García
- Departamento de Bioquímica, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, México 04510, Distrito Federal, México
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Cejudo FJ, Meyer AJ, Reichheld JP, Rouhier N, Traverso JA. Thiol-based redox homeostasis and signaling. FRONTIERS IN PLANT SCIENCE 2014; 5:266. [PMID: 24959171 PMCID: PMC4050284 DOI: 10.3389/fpls.2014.00266] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2014] [Accepted: 05/22/2014] [Indexed: 05/08/2023]
Affiliation(s)
- Francisco J. Cejudo
- Instituto de Bioquímica Vegetal y Fotosíntesis, Universidad de Sevilla, Consejo Superior de Investigaciones CientíficasSevilla, Spain
- *Correspondence: ; ; ; ;
| | - Andreas J. Meyer
- INRES - Chemical Signalling, University of BonnBonn, Germany
- *Correspondence: ; ; ; ;
| | - Jean-Philippe Reichheld
- Laboratoire Génome et Développement des Plantes, Université Perpignan Via DomitiaPerpignan, France
- Laboratoire Génome et Développement des Plantes, CNRSPerpignan, France
- *Correspondence: ; ; ; ;
| | - Nicolas Rouhier
- Faculté des Sciences, UMR1136 Université de Lorraine-INRA, Interactions Arbres/Micro-organismesVandoeuvre, France
- *Correspondence: ; ; ; ;
| | - Jose A. Traverso
- Departamento de Biología Celular, Facultad de Ciencias, Universidad de GranadaGranada, Spain
- Estación Experimental del Zaidín, Consejo Superior de Investigaciones CientíficasGranada, Spain
- *Correspondence: ; ; ; ;
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