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Wei C, Luo G, Jin Z, Li J, Li Y. Physiological and Structural Changes in Leaves of Platycrater arguta Seedlings Exposed to Increasing Light Intensities. PLANTS (BASEL, SWITZERLAND) 2024; 13:1263. [PMID: 38732478 PMCID: PMC11085374 DOI: 10.3390/plants13091263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 04/22/2024] [Accepted: 04/29/2024] [Indexed: 05/13/2024]
Abstract
Understanding the light adaptation of plants is critical for conservation. Platycrater arguta, an endangered deciduous shrub endemic to East Asia, possesses high ornamental and phylogeographic value. However, the weak environmental adaptability of P. arguta species has limited its general growth and conservation. To obtain a deeper understanding of the P. arguta growth conditions, we examined the leaf morphology and physiology via anatomical and chloroplast ultrastructural analyses following exposure to different natural light intensities (full light, 40%, and 10%). The findings indicated that P. arguta seedings in the 10% light intensity had significantly improved leaf morphological characteristics and specific leaf area compared to those exposed to other intensities. The net photosynthetic rate, chlorophyll (Chl) content, photosynthetic nitrogen use efficiency (PNUE), and photosynthetic phosphorus use efficiency (PPUE) exhibited marked increases at a 10% light intensity compared to both 40% light and full light intensities, whereas the light compensation point and dark respiration levels reached their lowest values under the 10% light condition. With reduced light, leaf thickness, palisade tissue, spongy tissue, and stomatal density significantly decreased, whereas the stomatal length, stomatal width, and stomatal aperture were significantly elevated. When exposed to 10% light intensity, the ultrastructure of chloroplasts was well developed, chloroplasts and starch grain size, the number of grana, and thylakoids all increased significantly, while the number of plastoglobules was significantly reduced. Relative distance phenotypic plasticity index analysis exhibited that P. arguta adapts to varying light environments predominantly by adjusting PPUE, Chl b, PNUE, chloroplast area, and the activity of PSII reaction centers. We proposed that P. arguta efficiently utilizes low light to reconfigure its energy metabolism by regulating its leaf structure, photosynthetic capacity, nutrient use efficiency, and chloroplast development.
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Affiliation(s)
- Chunyan Wei
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, School of Life Sciences, Taizhou University, Taizhou 318000, China; (C.W.); (G.L.); (Z.J.); (J.L.)
- Institute of Ecology, School of Life Sciences, Taizhou University, Taizhou 318000, China
| | - Guangyu Luo
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, School of Life Sciences, Taizhou University, Taizhou 318000, China; (C.W.); (G.L.); (Z.J.); (J.L.)
- Institute of Ecology, School of Life Sciences, Taizhou University, Taizhou 318000, China
| | - Zexin Jin
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, School of Life Sciences, Taizhou University, Taizhou 318000, China; (C.W.); (G.L.); (Z.J.); (J.L.)
- Institute of Ecology, School of Life Sciences, Taizhou University, Taizhou 318000, China
| | - Junmin Li
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, School of Life Sciences, Taizhou University, Taizhou 318000, China; (C.W.); (G.L.); (Z.J.); (J.L.)
- Institute of Ecology, School of Life Sciences, Taizhou University, Taizhou 318000, China
| | - Yueling Li
- Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, School of Life Sciences, Taizhou University, Taizhou 318000, China; (C.W.); (G.L.); (Z.J.); (J.L.)
- Institute of Ecology, School of Life Sciences, Taizhou University, Taizhou 318000, China
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Mohorović P, Geldhof B, Holsteens K, Rinia M, Daems S, Reijnders T, Ceusters J, Van den Ende W, Van de Poel B. Ethylene inhibits photosynthesis via temporally distinct responses in tomato plants. PLANT PHYSIOLOGY 2024; 195:762-784. [PMID: 38146839 DOI: 10.1093/plphys/kiad685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 10/24/2023] [Accepted: 11/19/2023] [Indexed: 12/27/2023]
Abstract
Ethylene is a volatile plant hormone that regulates many developmental processes and responses toward (a)biotic stress. Studies have shown that high levels of ethylene repress vegetative growth in many important crops, including tomato (Solanum lycopersicum), possibly by inhibiting photosynthesis. We investigated the temporal effects of ethylene on young tomato plants using an automated ethylene gassing system to monitor the physiological, biochemical, and molecular responses through time course RNA-seq of a photosynthetically active source leaf. We found that ethylene evokes a dose-dependent inhibition of photosynthesis, which can be characterized by 3 temporally distinct phases. The earliest ethylene responses that marked the first phase and occurred a few hours after the start of the treatment were leaf epinasty and a decline in stomatal conductance, which led to lower light perception and CO2 uptake, respectively, resulting in a rapid decline of soluble sugar levels (glucose, fructose). The second phase of the ethylene effect was marked by low carbohydrate availability, which modulated plant energy metabolism to adapt by using alternative substrates (lipids and proteins) to fuel the TCA cycle. Long-term continuous exposure to ethylene led to the third phase, characterized by starch and chlorophyll breakdown, which further inhibited photosynthesis, leading to premature leaf senescence. To reveal early (3 h) ethylene-dependent regulators of photosynthesis, we performed a ChIP-seq experiment using anti-ETHYLENE INSENSITIVE 3-like 1 (EIL1) antibodies and found several candidate transcriptional regulators. Collectively, our study revealed a temporal sequence of events that led to the inhibition of photosynthesis by ethylene and identified potential transcriptional regulators responsible for this regulation.
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Affiliation(s)
- Petar Mohorović
- Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
| | - Batist Geldhof
- Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
| | - Kristof Holsteens
- Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
| | - Marilien Rinia
- Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
| | - Stijn Daems
- Research Group for Sustainable Plant Production and Protection, Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Campus Geel, Kleinhoefstraat 4, 2440 Geel, Belgium
| | - Timmy Reijnders
- Molecular Biotechnology of Plants and Microorganisms Lab, Department of Biology, KU Leuven, Kasteelpark Arenberg 31, 3001 Leuven, Belgium
| | - Johan Ceusters
- Research Group for Sustainable Plant Production and Protection, Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Campus Geel, Kleinhoefstraat 4, 2440 Geel, Belgium
- Leuven Plant Institute (LPI), KU Leuven, Kasteelpark Arenberg 31, 3001 Leuven, Belgium
| | - Wim Van den Ende
- Molecular Biotechnology of Plants and Microorganisms Lab, Department of Biology, KU Leuven, Kasteelpark Arenberg 31, 3001 Leuven, Belgium
- Leuven Plant Institute (LPI), KU Leuven, Kasteelpark Arenberg 31, 3001 Leuven, Belgium
| | - Bram Van de Poel
- Division of Crop Biotechnics, Department of Biosystems, KU Leuven, Willem de Croylaan 42, 3001 Leuven, Belgium
- Leuven Plant Institute (LPI), KU Leuven, Kasteelpark Arenberg 31, 3001 Leuven, Belgium
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Sharifi Kalyani F, Babaei S, Zafarsohrabpour Y, Nosratti I, Gage K, Sadeghpour A. Investigating the impacts of airborne dust on herbicide performance on Amaranthus retroflexus. Sci Rep 2024; 14:3785. [PMID: 38360846 PMCID: PMC10869696 DOI: 10.1038/s41598-024-54134-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 02/08/2024] [Indexed: 02/17/2024] Open
Abstract
Dust pollution poses environmental hazards, affecting agriculture through reduced sunlight exposure, photosynthesis, crop yields, and food security. This study explores the interference of dust pollution on herbicide efficacy to control weeds in a semi-arid region. In a factorial experiment conducted in 2019 and replicated in 2020, the interaction of dust and various herbicide applications, including bentazon, sulfosulfuron, tribenuron-methyl, aminopyralid + florasulam, foramsulfuron + iodosulfuron + thiencarbazone, 2,4-D + MCPA, and acetochlor, in controlling Amaranthus retroflexus L. were assessed. Dust induced a 9.2% reduction in the total chlorophyll content of A. retroflexus, while herbicide application independently led to a 67.5% decrease. Contrary to expectations, herbicides performed better in dust, except bentazon, which caused a 28% drop in plant height and a 29% decrease in total biomass compared to non-dust conditions. Both herbicides and dust exerted suppressive effects on A. retroflexus's leaf and stem weights and overall biomass. Despite dust presence, tribenuron-methyl (95.8%), aminopyralid + florasulam (95.7%), sulfosulfuron (96.5%), and foramsulfuron + iodosulfuron + thiencarbazone (97.8%) effectively controlled A. retroflexus. These findings indicate that dust's effect on herbicide efficacy is herbicide-dependent but except bentazon, dust generally increased herbicide efficacy and amplified the control of A. retroflexus.
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Affiliation(s)
- Firouzeh Sharifi Kalyani
- Department of Plant Production and Genetics, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran
| | - Sirwan Babaei
- Department of Plant Production and Genetics, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran.
- Crop, Soil, and Environmental Management Program, School of Agricultural Sciences, Southern Illinois University, Carbondale, IL, 62901, USA.
| | - Yasin Zafarsohrabpour
- Department of Plant Production and Genetics, Faculty of Agriculture, University of Kurdistan, Sanandaj, Iran
| | - Iraj Nosratti
- Department of Plant Production and Genetics, Faculty of Agriculture and Natural Resources, Razi University, Kermanshah, Iran
| | - Karla Gage
- Crop, Soil, and Environmental Management Program, School of Agricultural Sciences, Southern Illinois University, Carbondale, IL, 62901, USA
| | - Amir Sadeghpour
- Crop, Soil, and Environmental Management Program, School of Agricultural Sciences, Southern Illinois University, Carbondale, IL, 62901, USA
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Ogrodowicz P, Wojciechowicz MK, Kuczyńska A, Krajewski P, Kempa M. The Effects of Growth Modification on Pollen Development in Spring Barley ( Hordeum vulgare L.) Genotypes with Contrasting Drought Tolerance. Cells 2023; 12:1656. [PMID: 37371126 DOI: 10.3390/cells12121656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Revised: 06/02/2023] [Accepted: 06/15/2023] [Indexed: 06/29/2023] Open
Abstract
Drought stress inducing pollen sterility can reduce crop yield worldwide. The regulatory crosstalk associated with the effects of drought on pollen formation at the cellular level has not been explored in detail so far. In this study, we performed morphological and cytoembryological analysis of anther perturbations and examined pollen development in two spring barley genotypes that differ in earliness and drought tolerance. The Syrian breeding line CamB (drought-tolerant) and the European cultivar Lubuski (drought-sensitive) were used as experimental materials to analyze the drought-induced changes in yield performance, chlorophyll fluorescence kinetics, the pollen grain micromorphology and ultrastructure during critical stages of plant development. In addition, fluctuations in HvGAMYB expression were studied, as this transcription factor is closely associated with the development of the anther. In the experiments, the studied plants were affected by drought, as was confirmed by the analyses of yield performance and chlorophyll fluorescence kinetics. However, contrary to our expectations, the pollen development of plants grown under specific conditions was not severely affected. The results also suggest that growth modification, as well as the perturbation in light distribution, can affect the HvGAMYB expression. This study demonstrated that the duration of the vegetation period can influence plant drought responses and, as a consequence, the processes associated with pollen development as every growth modification changes the dynamics of drought effects as well as the duration of plant exposition to drought.
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Affiliation(s)
- Piotr Ogrodowicz
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
| | - Maria Katarzyna Wojciechowicz
- Department of General Botany, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University, 1 Wieniawskiego Street, 60-479 Poznan, Poland
| | - Anetta Kuczyńska
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
| | - Paweł Krajewski
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
| | - Michał Kempa
- Institute of Plant Genetics Polish Academy of Sciences, 34 Strzeszynska Street, 60-479 Poznan, Poland
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Ren M, Ma J, Lu D, Wu C, Zhu S, Chen X, Wu Y, Shen Y. STAY-GREEN Accelerates Chlorophyll Degradation in Magnolia sinostellata under the Condition of Light Deficiency. Int J Mol Sci 2023; 24:ijms24108510. [PMID: 37239857 DOI: 10.3390/ijms24108510] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 05/05/2023] [Accepted: 05/06/2023] [Indexed: 05/28/2023] Open
Abstract
Species of the Magnoliaceae family are valued for their ornamental qualities and are widely used in landscaping worldwide. However, many of these species are endangered in their natural environments, often due to being overshadowed by overstory canopies. The molecular mechanisms of Magnolia's sensitivity to shade have remained hitherto obscure. Our study sheds light on this conundrum by identifying critical genes involved in governing the plant's response to a light deficiency (LD) environment. In response to LD stress, Magnolia sinostellata leaves were endowed with a drastic dwindling in chlorophyll content, which was concomitant to the downregulation of the chlorophyll biosynthesis pathway and upregulation in the chlorophyll degradation pathway. The STAY-GREEN (MsSGR) gene was one of the most up-regulated genes, which was specifically localized in chloroplasts, and its overexpression in Arabidopsis and tobacco accelerated chlorophyll degradation. Sequence analysis of the MsSGR promoter revealed that it contains multiple phytohormone-responsive and light-responsive cis-acting elements and was activated by LD stress. A yeast two-hybrid analysis resulted in the identification of 24 proteins that putatively interact with MsSGR, among which eight were chloroplast-localized proteins that were significantly responsive to LD. Our findings demonstrate that light deficiency increases the expression of MsSGR, which in turn regulates chlorophyll degradation and interacts with multiple proteins to form a molecular cascade. Overall, our work has uncovered the mechanism by which MsSGR mediates chlorophyll degradation under LD stress conditions, providing insight into the molecular interactions network of MsSGR and contributing to a theoretical framework for understanding the endangerment of wild Magnoliaceae species.
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Affiliation(s)
- Mingjie Ren
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Jingjing Ma
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Danying Lu
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Chao Wu
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Senyu Zhu
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Xiaojun Chen
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Yufeng Wu
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
| | - Yamei Shen
- Zhejiang Provincial Key Laboratory of Germplasm Innovation and Utilization for Garden Plants, College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou 311300, China
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Lu D, Xu B, Yu Q, Liu Z, Ren M, Wang Y, Zhang S, Wu C, Shen Y. Identification of potential light deficiency response regulators in endangered species Magnolia sinostellata. Sci Rep 2022; 12:22536. [PMID: 36581613 PMCID: PMC9800573 DOI: 10.1038/s41598-022-25393-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Accepted: 11/29/2022] [Indexed: 12/30/2022] Open
Abstract
Magnolia sinostellata is one of the endangered species in China and largely suffers light deficiency stress in the understory of forest. However, the weak light response molecular mechanism remains unclear. More importantly, hub genes in the molecular network have not been pinpointed. To explore potential regulators in the mechanism, weighted gene co-expression network analysis (WGCNA) was performed to analysis the trancriptome data of M. sinostellata leaves subjected to weak light with different time points. Gene co-expression analysis illustrated that module 1, 2 and 3 were closely associated with light deficiency treatment, which. Gene ontology and KEGG analyses showed that genes in module 1 mainly participated in amino and nucleotide metabolism, module 2 mostly involved in carbon fixation and module 3 mostly regulated photosynthesis related pathways, among which 6, 7 and 8 hub genes were identified, respectively. Hub genes isoform_107196 in module 1 and isoform_55976 in module 2 were unique to M. sinostellata. This study found that light deficiency inhibited photosynthesis and stress tolerance, while improved carbon metabolism and flowering related pathways in M. sinostellata, which can impact its accumulation reserves of growth and reproduction in the next season. In addition, key shade response regulators identified in this study have laid a firm foundation for further investigation of shade response molecular mechanism and protection of other shade sensitive plants.
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Affiliation(s)
- Danying Lu
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou, 311300 Zhejiang China
| | - Bin Xu
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou, 311300 Zhejiang China
| | - Qin Yu
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou, 311300 Zhejiang China
| | - Zhigao Liu
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou, 311300 Zhejiang China
| | - Mingjie Ren
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou, 311300 Zhejiang China
| | - Yaling Wang
- Xi’an Botanical Garden of Shanxi Academy of Science, Xi’an , 710061 Shanxi China
| | - Shouzhou Zhang
- grid.464438.9Fairy Lake Botanical Garden, Shenzhen, 518004 Guangdong China
| | - Chao Wu
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou, 311300 Zhejiang China
| | - Yamei Shen
- grid.443483.c0000 0000 9152 7385College of Landscape and Architecture, Zhejiang Agriculture and Forestry University, Hangzhou, 311300 Zhejiang China
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Cai Y, Meng J, Cui Y, Tian M, Shi Z, Wang J. Transcriptome and targeted hormone metabolome reveal the molecular mechanisms of flower abscission in camellia. FRONTIERS IN PLANT SCIENCE 2022; 13:1076037. [PMID: 36618654 PMCID: PMC9813748 DOI: 10.3389/fpls.2022.1076037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/21/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
INTRODUCTION Camellia is among the most ornamentally valuable flowers and plants worldwide. Flower abscission typically causes significant financial losses by the horticultural landscape. Previous research has revealed that phytohormones, transcription factors, and other genes involved in floral development regulate the maintenance and mortality of flowers. METHODS In this study, for the first time, the transcriptomes and targeted hormone metabolomics of three developmental stages of the receptacles of two distinct camellia strains (CF: abscission strain, CHF: nonabscission strain) were analyzed to determine their roles in regulating blossom abscission in camellia. RESULTS ABA content was shown to be considerably upregulated throughout all phases of CF development, as were the genes implicated in the ABA production pathway and their downstream counterparts. Highly expressed genes in CF were involved in galactose metabolism, phenylpropanoid biosynthesis, amino and nucleotide sugar metabolism, pentose and glucuronate interconversions, and MAPK. Among others, highly expressed genes in CHF are associated with fructose and mannose metabolism, alpha-linolenic acid metabolism, biosynthesis of secondary metabolites, starch and sucrose metabolism, and cutin, suberin, and wax biosynthesis. A vast variety of stress response-related pathways and redox-related activities were also shown to be active in CHF. In contrast, CF dramatically activated pathways associated with lignin production, keratinogenesis, cell wall biogenesis, and ABA response. A comparative transcriptomic study of the CF and CHF pathways revealed that the downstream response pathways of hormones, including CTK, BR, IAA, ethylene, and GA, were very active in CF, indicating a significant amount of signal transduction and transcriptional regulation by CF. In addition, members of the transcription factor family, such as MYB, bHLH, MADS, and WD40, may regulate flower abscission. DISCUSSION A comparative transcriptome analysis of two distinct strains of camellia receptacles elucidates the molecular processes and regulatory characteristics of flower abscission and provides direction for the targeted improvement and breeding of camellia.
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Affiliation(s)
- Yanfei Cai
- Flower Research Institute of Yunnan Academy of Agricultural Sciences, Kunming, Yunnan, China
- National Engineering Research Center for Ornamental Horticulture, Kunming, Yunnan, China
| | - Jing Meng
- College of Horticulture and Landscape, Yunnan Agricultural University, Kunming, Yunnan, China
| | - Yinshan Cui
- Yunnan Pulis Biotechnology Co. Ltd., Kunming, Yunnan, China
| | - Min Tian
- Flower Research Institute of Yunnan Academy of Agricultural Sciences, Kunming, Yunnan, China
- National Engineering Research Center for Ornamental Horticulture, Kunming, Yunnan, China
| | - Ziming Shi
- Flower Research Institute of Yunnan Academy of Agricultural Sciences, Kunming, Yunnan, China
- National Engineering Research Center for Ornamental Horticulture, Kunming, Yunnan, China
| | - Jihua Wang
- Flower Research Institute of Yunnan Academy of Agricultural Sciences, Kunming, Yunnan, China
- National Engineering Research Center for Ornamental Horticulture, Kunming, Yunnan, China
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