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Wakem GA, Tonfack LB, Youmbi E, Fotso-Kuate A, Masso C, Fiaboe KKM, Ndango R, Tizé I, Grabulos J, Dufour D, Ndjouenkeu R, Mbéguié-A-Mbéguié D. Histological and biophysical changes of cassava roots during retting, a key step of fufu processing. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:4689-4699. [PMID: 37969044 DOI: 10.1002/jsfa.13130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 09/27/2023] [Accepted: 11/16/2023] [Indexed: 11/17/2023]
Abstract
BACKGROUND Retting is a key step of cassava processing into widely consumed foods (fufu, chikwangue, miondo and bobolo) in sub-Saharan Africa. For some populations, retting ability is a major quality criterion that drives the adoption of new cassava varieties. Despite this importance, the physiological basis associated with this process remains poorly understood, and should lead to improved screening tools for breeding. Eight cassava varieties contrasting in retting ability properties were used in the present study. Roots and soaking water were sampled during retting and characterized at both histological and biochemical levels. RESULTS Histological data highlighted the degradation of root cell wall during retting. The average pH of soaking water decreased from 5.94 to 4.31 and the average simple sugars decreased from 0.18 to 0 g L-1, whereas the organic acids increased up to 5.61 g L-1. In roots tissue, simple sugars and organic acid contents decreased from 22.9 to 0 g kg-1 and from 80 to 0 g kg-1, respectively. The total pectin content of roots among varieties at harvest was similar, and decreased during the retting process. Overall, there was a negative correlation between total pectins content and root softening, although this did not reach statistical significance. CONCLUSION Major histological and biochemical changes occurred during cassava root retting, with some of them associated with the process. Retting affected starch pasting properties more than starch content. Although this process is characterized by root softening and degradation of cell wall structure, the present study strongly suggested that pectin is not the only cell wall component involved in these changes. © 2023 The Authors. Journal of The Science of Food and Agriculture published by John Wiley & Sons Ltd on behalf of Society of Chemical Industry.
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Affiliation(s)
- Germaine-Alice Wakem
- Plant Physiology and Improvement Unit, Laboratory of Biotechnology and Environment, Department of Plant Biology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
- CIRAD, UMR Qualisud, Montpellier, France
| | - Libert Brice Tonfack
- Plant Physiology and Improvement Unit, Laboratory of Biotechnology and Environment, Department of Plant Biology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | - Emmanuel Youmbi
- Plant Physiology and Improvement Unit, Laboratory of Biotechnology and Environment, Department of Plant Biology, Faculty of Science, University of Yaoundé I, Yaoundé, Cameroon
| | | | - Cargele Masso
- International Institute of Tropical Agriculture, Yaoundé, Cameroon
| | - Komi K M Fiaboe
- International Institute of Tropical Agriculture, Yaoundé, Cameroon
| | - Rose Ndango
- International Institute of Tropical Agriculture, Yaoundé, Cameroon
| | - Isaac Tizé
- International Institute of Tropical Agriculture, Yaoundé, Cameroon
| | - Joel Grabulos
- CIRAD, UMR Qualisud, Montpellier, France
- Qualisud, Univ Montpellier, CIRAD, Univ d'Avignon, Institut Agro, IRD, Univ de La Réunion, Montpellier, France
| | | | - Robert Ndjouenkeu
- Ecole Nationale Supérieure des Sciences Agro-Industrielles (ENSAI), Université de Ngoundéré (Cameroun), Ngaoundéré, Cameroon
| | - Didier Mbéguié-A-Mbéguié
- CIRAD, UMR Qualisud, Montpellier, France
- Qualisud, Univ Montpellier, CIRAD, Univ d'Avignon, Institut Agro, IRD, Univ de La Réunion, Montpellier, France
- Université Nangui Abrogoua, Abidjan, Côte d'Ivoire
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Apriyanto A, Compart J, Fettke J. Transcriptomic analysis of mesocarp tissue during fruit development of the oil palm revealed specific isozymes related to starch metabolism that control oil yield. FRONTIERS IN PLANT SCIENCE 2023; 14:1220237. [PMID: 37554560 PMCID: PMC10405827 DOI: 10.3389/fpls.2023.1220237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Accepted: 07/05/2023] [Indexed: 08/10/2023]
Abstract
The oil palm (Elaeis guineensis Jacq.) produces a large amount of oil from the fruit. However, increasing the oil production in this fruit is still challenging. A recent study has shown that starch metabolism is essential for oil synthesis in fruit-producing species. Therefore, the transcriptomic analysis by RNA-seq was performed to observe gene expression alteration related to starch metabolism genes throughout the maturity stages of oil palm fruit with different oil yields. Gene expression profiles were examined with three different oil yields group (low, medium, and high) at six fruit development phases (4, 8, 12, 16, 20, and 22 weeks after pollination). We successfully identified and analyzed differentially expressed genes in oil palm mesocarps during development. The results showed that the transcriptome profile for each developmental phase was unique. Sucrose flux to the mesocarp tissue, rapid starch turnover, and high glycolytic activity have been identified as critical factors for oil production in oil palms. For starch metabolism and the glycolytic pathway, we identified specific gene expressions of enzyme isoforms (isozymes) that correlated with oil production, which may determine the oil content. This study provides valuable information for creating new high-oil-yielding palm varieties via breeding programs or genome editing approaches.
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Affiliation(s)
- Ardha Apriyanto
- Biopolymer Analytics, Institute of Biochemistry and Biology, University of Potsdam, Potsdam-Golm, Germany
- Research and Development, PT. Astra Agro Lestari Tbk, Jakarta Timur, Indonesia
| | - Julia Compart
- Biopolymer Analytics, Institute of Biochemistry and Biology, University of Potsdam, Potsdam-Golm, Germany
| | - Joerg Fettke
- Biopolymer Analytics, Institute of Biochemistry and Biology, University of Potsdam, Potsdam-Golm, Germany
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Wang C, Jiang H, Gao G, Yang F, Guan J, Qi H. CmMYB44 might interact with CmAPS2-2 to regulate starch metabolism in oriental melon fruit. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2023; 196:361-369. [PMID: 36739843 DOI: 10.1016/j.plaphy.2023.01.047] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 01/13/2023] [Accepted: 01/23/2023] [Indexed: 06/18/2023]
Abstract
Sugar content is one of the determining factors for melon fruit maturity. Studies have shown that starch gradually degrades during fruit ripening, resulting in sugar accumulation. But the specific relationship between starch metabolism and sucrose accumulation was still unknown. Here, the starch and sugar contents, the activities of key enzymes and the expression patterns of genes related to starch-sucrose metabolism were determined in the fruit of high sugar and starch variety 'HS' and low sugar and starch variety 'LW'. It was found that starch accumulated during fruit development process, and then degraded at 30 days after anthesis (DAA), which was synchronized with sucrose accumulation in 'HS' fruit, while starch and sucrose contents were always at a lower level during 'LW' fruit maturation. Furthermore, starch metabolism-related enzymes (Adenine dinucleotide phosphate -glucose pyrophosphorylase (AGPase), α-amylase (AMY), β-amylase (BMY)) and the key enzymes for sucrose accumulation (sucrose phosphate synthase (SPS) and sucrose synthase (SS)) were significantly increased at ripening stage of 'HS' fruit, and their activities were consistent with the expressions of CmAPS2-2, CmAMY2, CmBAM1, CmBAM9 and CmSPS1. However, the contents of starch and sucrose and the activities of AGPase and SPS in 'LW' fruit didn't change significantly. We discovered an R2R3-type MYB transcription factor, CmMYB44, screened from yeast one hybrid library, could directly bind to the promoter of CmAPS2-2 to inhibit its transcription. These results revealed that the targeted down-regulation of CmAPS2-2 by CmMYB44 might be involved in the starch accumulation process, which affect the flavor quality of oriental melon fruit.
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Affiliation(s)
- Cheng Wang
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China; Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province, China; National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, 110866, China
| | - Hongchao Jiang
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China; Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province, China; National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, 110866, China
| | - Ge Gao
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China; Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province, China; National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, 110866, China
| | - Fan Yang
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China; Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province, China; National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, 110866, China
| | - Jingyue Guan
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China; Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province, China; National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, 110866, China
| | - Hongyan Qi
- College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China; Key Laboratory of Protected Horticulture of Education of Ministry and Liaoning Province, China; National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design & Application Technology, Shenyang, 110866, China.
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Floridean Starch and Floridoside Metabolic Pathways of Neoporphyra haitanensis and Their Regulatory Mechanism under Continuous Darkness. Mar Drugs 2021; 19:md19120664. [PMID: 34940663 PMCID: PMC8703398 DOI: 10.3390/md19120664] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 12/28/2022] Open
Abstract
Floridean starch and floridoside are the main storage carbohydrates of red algae. However, their complete metabolic pathways and the origin, function, and regulatory mechanism of their pathway genes have not been fully elucidated. In this study, we identified their metabolic pathway genes and analyzed the changes in related gene expression and metabolite content in Neoporphyra haitanensis under continuous dark conditions. Our results showed that genes from different sources, including eukaryotic hosts, cyanobacteria, and bacteria, were combined to construct floridean starch and floridoside metabolic pathways in N. haitanensis. Moreover, compared with those in the control, under continuous dark conditions, floridean starch biosynthesis genes and some degradation genes were significantly upregulated with no significant change in floridean starch content, whereas floridoside degradation genes were significantly upregulated with a significant decrease in floridoside content. This implies that floridean starch content is maintained but floridoside is consumed in N. haitanensis under dark conditions. This study elucidates the "floridean starch-floridoside" metabolic network and its gene origins in N. haitanensis for the first time.
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Liang G, He H, Nai G, Feng L, Li Y, Zhou Q, Ma Z, Yue Y, Chen B, Mao J. Genome-wide identification of BAM genes in grapevine (Vitis vinifera L.) and ectopic expression of VvBAM1 modulating soluble sugar levels to improve low-temperature tolerance in tomato. BMC PLANT BIOLOGY 2021; 21:156. [PMID: 33771117 PMCID: PMC8004407 DOI: 10.1186/s12870-021-02916-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 03/04/2021] [Indexed: 06/12/2023]
Abstract
BACKGROUND Low temperature (LT) is one of the main limiting factors that affect growth and development in grape. Increasing soluble sugar and scavenging reactive oxygen species (ROS) play critical roles in grapevine resistance to cold stress. However, the mechanism of β-amylase (BAM) involved in the regulation of sugar levels and antioxidant enzyme activities in response to cold stress is unclear. RESULTS In this study, six BAM genes were identified and clustered into four groups. Multiple sequence alignment and gene structure analysis showed that VvBAM6 lacked the Glu380 residue and contained only an exon. The transcript abundance of VvBAM1 and VvBAM3 significantly increased as temperature decreased. After LT stress, VvBAM1 was highly expressed in the leaves, petioles, stems, and roots of overexpressing tomato lines. The total amylase and BAM activities increased by 6.5- and 6.01-fold in transgenic plants compared with those in wild-type tomato plants (WT) subjected to LT, respectively. The glucose and sucrose contents in transgenic plants were significantly higher than those in WT plants, whereas the starch contents in the former decreased by 1.5-fold compared with those in the latter under LT stress. The analysis of transcriptome sequencing data revealed that 541 genes were upregulated, and 663 genes were downregulated in transgenic plants. One sugar transporter protein gene (SlSTP10), two peroxidase (POD)-related genes (SlPER7 and SlPER5), and one catalase (CAT)-related gene (SlCAT1) were upregulated by 8.6-, 3.6-, 3.0-, and 2.3-fold in transgenic plants after LT stress, respectively. CONCLUSIONS Our results suggest that VvBAM1 overexpression promotes ROS scavenging and improves cold tolerance ability by modulating starch hydrolysis to affect soluble sugar levels in tomato plants.
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Affiliation(s)
- Guoping Liang
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Honghong He
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Guojie Nai
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Lidan Feng
- College of Food Science and Engineering, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Yanmei Li
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Qi Zhou
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Zonghuan Ma
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Yuan Yue
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Baihong Chen
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China
| | - Juan Mao
- College of Horticulture, Gansu Agricultural University, Lanzhou, 730070, People's Republic of China.
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6
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Kuang J, Wu C, Guo Y, Walther D, Shan W, Chen J, Chen L, Lu W. Deciphering transcriptional regulators of banana fruit ripening by regulatory network analysis. PLANT BIOTECHNOLOGY JOURNAL 2021; 19:477-489. [PMID: 32920977 PMCID: PMC7955892 DOI: 10.1111/pbi.13477] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 08/31/2020] [Indexed: 05/19/2023]
Abstract
Fruit ripening is a critical phase in the production and marketing of fruits. Previous studies have indicated that fruit ripening is a highly coordinated process, mainly regulated at the transcriptional level, in which transcription factors play essential roles. Thus, identifying key transcription factors regulating fruit ripening as well as their associated regulatory networks promises to contribute to a better understanding of fruit ripening. In this study, temporal gene expression analyses were performed to investigate banana fruit ripening with the aim to discern the global architecture of gene regulatory networks underlying fruit ripening. Eight time points were profiled covering dynamic changes of phenotypes, the associated physiology and levels of known ripening marker genes. Combining results from a weighted gene co-expression network analysis (WGCNA) as well as cis-motif analysis and supported by EMSA, Y1H, tobacco-, banana-transactivation experimental results, the regulatory network of banana fruit ripening was constructed, from which 25 transcription factors were identified as prime candidates to regulate the ripening process by modulating different ripening-related pathways. Our study presents the first global view of the gene regulatory network involved in banana fruit ripening, which may provide the basis for a targeted manipulation of fruit ripening to attain higher banana and loss-reduced banana commercialization.
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Affiliation(s)
- Jian‐Fei Kuang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China)Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Chao‐Jie Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China)Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Yu‐Fan Guo
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China)Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Dirk Walther
- Max Planck Institute of Molecular Plant PhysiologyPotsdam‐GolmGermany
| | - Wei Shan
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China)Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Jian‐Ye Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China)Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Lin Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China)Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Wang‐Jin Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China)Ministry of Agriculture and Rural Affairs/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
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Bhuiyan F, Campos NA, Swennen R, Carpentier S. Characterizing fruit ripening in plantain and Cavendish bananas: A proteomics approach. J Proteomics 2020; 214:103632. [DOI: 10.1016/j.jprot.2019.103632] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/10/2019] [Accepted: 12/27/2019] [Indexed: 10/25/2022]
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8
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Wang Z, Miao H, Liu J, Xu B, Yao X, Xu C, Zhao S, Fang X, Jia C, Wang J, Zhang J, Li J, Xu Y, Wang J, Ma W, Wu Z, Yu L, Yang Y, Liu C, Guo Y, Sun S, Baurens FC, Martin G, Salmon F, Garsmeur O, Yahiaoui N, Hervouet C, Rouard M, Laboureau N, Habas R, Ricci S, Peng M, Guo A, Xie J, Li Y, Ding Z, Yan Y, Tie W, D'Hont A, Hu W, Jin Z. Musa balbisiana genome reveals subgenome evolution and functional divergence. NATURE PLANTS 2019; 5:810-821. [PMID: 31308504 PMCID: PMC6784884 DOI: 10.1038/s41477-019-0452-6] [Citation(s) in RCA: 86] [Impact Index Per Article: 17.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Accepted: 05/20/2019] [Indexed: 05/19/2023]
Abstract
Banana cultivars (Musa ssp.) are diploid, triploid and tetraploid hybrids derived from Musa acuminata and Musa balbisiana. We presented a high-quality draft genome assembly of M. balbisiana with 430 Mb (87%) assembled into 11 chromosomes. We identified that the recent divergence of M. acuminata (A-genome) and M. balbisiana (B-genome) occurred after lineage-specific whole-genome duplication, and that the B-genome may be more sensitive to the fractionation process compared to the A-genome. Homoeologous exchanges occurred frequently between A- and B-subgenomes in allopolyploids. Genomic variation within progenitors resulted in functional divergence of subgenomes. Global homoeologue expression dominance occurred between subgenomes of the allotriploid. Gene families related to ethylene biosynthesis and starch metabolism exhibited significant expansion at the pathway level and wide homoeologue expression dominance in the B-subgenome of the allotriploid. The independent origin of 1-aminocyclopropane-1-carboxylic acid oxidase (ACO) homoeologue gene pairs and tandem duplication-driven expansion of ACO genes in the B-subgenome contributed to rapid and major ethylene production post-harvest in allotriploid banana fruits. The findings of this study provide greater context for understanding fruit biology, and aid the development of tools for breeding optimal banana cultivars.
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Affiliation(s)
- Zhuo Wang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Hongxia Miao
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Juhua Liu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
- Key Laboratory of Genetic Improvement of Bananas, Hainan province, Haikou Experimental Station, China Academy of Tropical Agricultural Sciences, Haikou, China
| | - Biyu Xu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | | | - Chunyan Xu
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Shancen Zhao
- BGI Institute of Applied Agriculture, BGI-Shenzhen, Shenzhen, China
| | | | - Caihong Jia
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Jingyi Wang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Jianbin Zhang
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Jingyang Li
- Key Laboratory of Genetic Improvement of Bananas, Hainan province, Haikou Experimental Station, China Academy of Tropical Agricultural Sciences, Haikou, China
| | - Yi Xu
- Key Laboratory of Genetic Improvement of Bananas, Hainan province, Haikou Experimental Station, China Academy of Tropical Agricultural Sciences, Haikou, China
| | - Jiashui Wang
- Key Laboratory of Genetic Improvement of Bananas, Hainan province, Haikou Experimental Station, China Academy of Tropical Agricultural Sciences, Haikou, China
| | - Weihong Ma
- Key Laboratory of Genetic Improvement of Bananas, Hainan province, Haikou Experimental Station, China Academy of Tropical Agricultural Sciences, Haikou, China
| | | | - Lili Yu
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Yulan Yang
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Chun Liu
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Yu Guo
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Silong Sun
- BGI Genomics, BGI-Shenzhen, Shenzhen, China
| | - Franc-Christophe Baurens
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Guillaume Martin
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Frederic Salmon
- AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
- CIRAD, UMR AGAP, Guadeloupe, France
| | - Olivier Garsmeur
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Nabila Yahiaoui
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Catherine Hervouet
- CIRAD, UMR AGAP, Montpellier, France
- AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | | | - Nathalie Laboureau
- CIRAD, UMR BGPI, Montpellier, France
- BGPI, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Remy Habas
- CIRAD, UMR BGPI, Montpellier, France
- BGPI, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
| | - Sebastien Ricci
- AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France
- CIRAD, UMR AGAP, Guadeloupe, France
| | - Ming Peng
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Anping Guo
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Jianghui Xie
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Yin Li
- Waksman Institute of Microbiology, Rutgers, The State University of New Jersey, Piscataway, NJ, USA
| | - Zehong Ding
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Yan Yan
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Weiwei Tie
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China
| | - Angélique D'Hont
- CIRAD, UMR AGAP, Montpellier, France.
- AGAP, Univ Montpellier, CIRAD, INRA, Montpellier SupAgro, Montpellier, France.
| | - Wei Hu
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China.
| | - Zhiqiang Jin
- Key Laboratory of Biology and Genetic Resources of Tropical Crops, Institute of Tropical Bioscience and Biotechnology, Chinese Academy of Tropical Agricultural Sciences, Haikou, China.
- Key Laboratory of Genetic Improvement of Bananas, Hainan province, Haikou Experimental Station, China Academy of Tropical Agricultural Sciences, Haikou, China.
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9
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Roch L, Dai Z, Gomès E, Bernillon S, Wang J, Gibon Y, Moing A. Fruit Salad in the Lab: Comparing Botanical Species to Help Deciphering Fruit Primary Metabolism. FRONTIERS IN PLANT SCIENCE 2019; 10:836. [PMID: 31354750 PMCID: PMC6632546 DOI: 10.3389/fpls.2019.00836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 06/12/2019] [Indexed: 05/08/2023]
Abstract
Although fleshy fruit species are economically important worldwide and crucial for human nutrition, the regulation of their fruit metabolism remains to be described finely. Fruit species differ in the origin of the tissue constituting the flesh, duration of fruit development, coordination of ripening changes (climacteric vs. non-climacteric type) and biochemical composition at ripeness is linked to sweetness and acidity. The main constituents of mature fruit result from different strategies of carbon transport and metabolism. Thus, the timing and nature of phloem loading and unloading can largely differ from one species to another. Furthermore, accumulations and transformations of major soluble sugars, organic acids, amino acids, starch and cell walls are very variable among fruit species. Comparing fruit species therefore appears as a valuable way to get a better understanding of metabolism. On the one hand, the comparison of results of studies about species of different botanical families allows pointing the drivers of sugar or organic acid accumulation but this kind of comparison is often hampered by heterogeneous analysis approaches applied in each study and incomplete dataset. On the other hand, cross-species studies remain rare but have brought new insights into key aspects of primary metabolism regulation. In addition, new tools for multi-species comparisons are currently emerging, including meta-analyses or re-use of shared metabolic or genomic data, and comparative metabolic flux or process-based modeling. All these approaches contribute to the identification of the metabolic factors that influence fruit growth and quality, in order to adjust their levels with breeding or cultural practices, with respect to improving fruit traits.
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Affiliation(s)
- Léa Roch
- UMR1332 Biologie du Fruit et Pathologie, Centre INRA de Bordeaux, INRA, Université de Bordeaux, Bordeaux, France
| | - Zhanwu Dai
- UMR 1287 EGFV, INRA, Bordeaux Sciences Agro, Université de Bordeaux, Bordeaux, France
| | - Eric Gomès
- UMR 1287 EGFV, INRA, Bordeaux Sciences Agro, Université de Bordeaux, Bordeaux, France
| | - Stéphane Bernillon
- UMR1332 Biologie du Fruit et Pathologie, Centre INRA de Bordeaux, INRA, Université de Bordeaux, Bordeaux, France
- Plateforme Métabolome Bordeaux, CGFB, MetaboHUB-PHENOME, IBVM, Centre INRA de Bordeaux, Bordeaux, France
| | - Jiaojiao Wang
- UMR1332 Biologie du Fruit et Pathologie, Centre INRA de Bordeaux, INRA, Université de Bordeaux, Bordeaux, France
| | - Yves Gibon
- UMR1332 Biologie du Fruit et Pathologie, Centre INRA de Bordeaux, INRA, Université de Bordeaux, Bordeaux, France
- Plateforme Métabolome Bordeaux, CGFB, MetaboHUB-PHENOME, IBVM, Centre INRA de Bordeaux, Bordeaux, France
| | - Annick Moing
- UMR1332 Biologie du Fruit et Pathologie, Centre INRA de Bordeaux, INRA, Université de Bordeaux, Bordeaux, France
- Plateforme Métabolome Bordeaux, CGFB, MetaboHUB-PHENOME, IBVM, Centre INRA de Bordeaux, Bordeaux, France
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10
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Yue C, Cao H, Lin H, Hu J, Ye Y, Li J, Hao Z, Hao X, Sun Y, Yang Y, Wang X. Expression patterns of alpha-amylase and beta-amylase genes provide insights into the molecular mechanisms underlying the responses of tea plants (Camellia sinensis) to stress and postharvest processing treatments. PLANTA 2019; 250:281-298. [PMID: 31025197 DOI: 10.1007/s00425-019-03171-w] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2018] [Accepted: 04/22/2019] [Indexed: 05/27/2023]
Abstract
The alpha-amylase and beta-amylase genes have been identified from tea plants, and their bioinformatic characteristics and expression patterns provide a foundation for further studies to elucidate their biological functions. Alpha-amylase (AMY)- and beta-amylase (BAM)-mediated starch degradation plays central roles in carbohydrate metabolism and participates extensively in the regulation of a wide range of biological processes, including growth, development and stress response. However, the AMY and BAM genes in tea plants (Camellia sinensis) are poorly understood, and the biological functions of these genes remain to be elucidated. In this study, three CsAMY and nine CsBAM genes from tea plants were identified based on genomic and transcriptomic database analyses, and the genes were subjected to comprehensive bioinformatic characterization. Phylogenetic analysis showed that the CsAMY proteins could be clustered into three different subfamilies, and nine CsBAM proteins could be classified into four groups. Putative catalytically active proteins were identified based on multiple sequence alignments, and the tertiary structures of these proteins were analyzed. Cis-element analysis indicated that CsAMY and CsBAM were extensively involved in tea plant growth, development and stress response. In addition, the CsAMY and CsBAM genes were differentially expressed in various tissues and were regulated by stress treatments (e.g., ABA, cold, drought and salt stress), and the expression patterns of these genes were associated with the postharvest withering and rotation processes. Taken together, our results will enhance the understanding of the roles of the CsAMY and CsBAM gene families in the growth, development and stress response of tea plants and of the potential functions of these genes in determining tea quality during the postharvest processing of tea leaves.
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Affiliation(s)
- Chuan Yue
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science, Universities of Fujian Province, Fuzhou, China.
- Tea Research Institute, Chinese Academy of Agricultural Sciences/National Center for Tea Improvement/Key Laboratory of Tea Plant Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, China.
| | - Hongli Cao
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science, Universities of Fujian Province, Fuzhou, China
| | - Hongzheng Lin
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science, Universities of Fujian Province, Fuzhou, China
| | - Juan Hu
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science, Universities of Fujian Province, Fuzhou, China
| | - Yijun Ye
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science, Universities of Fujian Province, Fuzhou, China
| | - Jiamin Li
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science, Universities of Fujian Province, Fuzhou, China
| | - Zhilong Hao
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science, Universities of Fujian Province, Fuzhou, China
| | - Xinyuan Hao
- Tea Research Institute, Chinese Academy of Agricultural Sciences/National Center for Tea Improvement/Key Laboratory of Tea Plant Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, China
| | - Yun Sun
- College of Horticulture, Fujian Agriculture and Forestry University/Key Laboratory of Tea Science, Universities of Fujian Province, Fuzhou, China
| | - Yajun Yang
- Tea Research Institute, Chinese Academy of Agricultural Sciences/National Center for Tea Improvement/Key Laboratory of Tea Plant Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, China.
| | - Xinchao Wang
- Tea Research Institute, Chinese Academy of Agricultural Sciences/National Center for Tea Improvement/Key Laboratory of Tea Plant Biology and Resources Utilization, Ministry of Agriculture, Hangzhou, China.
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Cordenunsi-Lysenko BR, Nascimento JRO, Castro-Alves VC, Purgatto E, Fabi JP, Peroni-Okyta FHG. The Starch Is (Not) Just Another Brick in the Wall: The Primary Metabolism of Sugars During Banana Ripening. FRONTIERS IN PLANT SCIENCE 2019; 10:391. [PMID: 31001305 PMCID: PMC6454214 DOI: 10.3389/fpls.2019.00391] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 03/14/2019] [Indexed: 05/25/2023]
Abstract
The monocot banana fruit is one of the most important crops worldwide. As a typical climacteric fruit, the harvest of commercial bananas usually occurs when the fruit is physiologically mature but unripe. The universal treatment of green bananas with ethylene or ethylene-releasing compounds in order to accelerate and standardize the ripening of a bunch of bananas mimics natural maturation after increasing the exogenous production of ethylene. The trigger of autocatalytic ethylene production regulated by a dual positive feedback loop circuit derived from a NAC gene and three MADS genes results in metabolic processes that induce changes in the primary metabolism of bananas. These changes include pulp softening and sweetening which are sensorial attributes that determine banana postharvest quality. During fruit development, bananas accumulate large amounts of starch (between 15 and 35% w/w of their fresh weight, depending on the cultivar). Pulp softening and sweetening during banana ripening are attributed not only to changes in the activities of cell wall hydrolases but also to starch-to-sugar metabolism. Therefore, starch granule erosion and disassembling are key events that lead bananas to reach their optimal postharvest quality. The knowledge of the mechanisms that regulate sugar primary metabolism during banana ripening is fundamental to reduce postharvest losses and improve final product quality, though. Recent studies have shown that ethylene-mediated regulation of starch-degrading enzymes at transcriptional and translational levels is crucial for sugar metabolism in banana ripening. Furthermore, the crosstalk between ethylene and other hormones including indole-3-acetic acid and abscisic acid also influences primary sugar metabolism. In this review, we will describe the state-of-the-art sugar primary metabolism in bananas and discuss the recent findings that shed light on the understanding of the molecular mechanisms involved in the regulation of this metabolism during fruit ripening.
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Affiliation(s)
- Beatriz Rosana Cordenunsi-Lysenko
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
- Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, Brazil
| | - João Roberto Oliveira Nascimento
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
- Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, Brazil
| | - Victor Costa Castro-Alves
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
| | - Eduardo Purgatto
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
- Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, Brazil
| | - João Paulo Fabi
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
- Food and Nutrition Research Center (NAPAN), University of São Paulo, São Paulo, Brazil
| | - Fernanda Helena Gonçalves Peroni-Okyta
- Department of Food Science and Experimental Nutrition, School of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
- Food Research Center (FoRC), Research, Innovation and Dissemination Centers, São Paulo Research Foundation (CEPID-FAPESP), São Paulo, Brazil
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Beauvoit B, Belouah I, Bertin N, Cakpo CB, Colombié S, Dai Z, Gautier H, Génard M, Moing A, Roch L, Vercambre G, Gibon Y. Putting primary metabolism into perspective to obtain better fruits. ANNALS OF BOTANY 2018; 122:1-21. [PMID: 29718072 PMCID: PMC6025238 DOI: 10.1093/aob/mcy057] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Accepted: 03/29/2017] [Indexed: 05/18/2023]
Abstract
Background One of the key goals of fruit biology is to understand the factors that influence fruit growth and quality, ultimately with a view to manipulating them for improvement of fruit traits. Scope Primary metabolism, which is not only essential for growth but is also a major component of fruit quality, is an obvious target for improvement. However, metabolism is a moving target that undergoes marked changes throughout fruit growth and ripening. Conclusions Agricultural practice and breeding have successfully improved fruit metabolic traits, but both face the complexity of the interplay between development, metabolism and the environment. Thus, more fundamental knowledge is needed to identify further strategies for the manipulation of fruit metabolism. Nearly two decades of post-genomics approaches involving transcriptomics, proteomics and/or metabolomics have generated a lot of information about the behaviour of fruit metabolic networks. Today, the emergence of modelling tools is providing the opportunity to turn this information into a mechanistic understanding of fruits, and ultimately to design better fruits. Since high-quality data are a key requirement in modelling, a range of must-have parameters and variables is proposed.
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Affiliation(s)
| | - Isma Belouah
- UMR 1332 BFP, INRA, Univ. Bordeaux, Villenave d’Ornon, France
| | | | | | - Sophie Colombié
- UMR 1332 BFP, INRA, Univ. Bordeaux, Villenave d’Ornon, France
| | - Zhanwu Dai
- UMR 1287 EGFV, INRA, Univ. Bordeaux, Bordeaux Sci Agro, F-Villenave d’Ornon, France
| | | | | | - Annick Moing
- UMR 1332 BFP, INRA, Univ. Bordeaux, Villenave d’Ornon, France
| | - Léa Roch
- UMR 1332 BFP, INRA, Univ. Bordeaux, Villenave d’Ornon, France
| | | | - Yves Gibon
- UMR 1332 BFP, INRA, Univ. Bordeaux, Villenave d’Ornon, France
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Chang E, Deng N, Zhang J, Liu J, Chen L, Zhao X, Abbas M, Jiang Z, Shi S. Proteome-Level Analysis of Metabolism- and Stress-Related Proteins during Seed Dormancy and Germination in Gnetum parvifolium. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:3019-3029. [PMID: 29490456 DOI: 10.1021/acs.jafc.7b05001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Gnetum parvifolium is a rich source of materials for traditional medicines, food, and oil, but little is known about the mechanism underlying its seed dormancy and germination. In this study, we analyzed the proteome-level changes in its seeds during germination using isobaric tags for relative and absolute quantitation. In total, 1,040 differentially expressed proteins were identified, and cluster analysis revealed the distinct time points during which signal transduction and oxidation-reduction activity changed. Gene Ontology analysis showed that "carbohydrate metabolic process" and "response to oxidative stress" were the main enriched terms. Proteins associated with starch degradation and antioxidant enzymes were important for dormancy-release, while proteins associated with energy metabolism and protein synthesis were up-regulated during germination. Moreover, protein-interaction networks were mainly associated with heat-shock proteins. Furthermore, in accord with changes in the energy metabolism- and antioxidant-related proteins, indole-3-acetic acid, Peroxidase, and soluble sugar content increased, and the starch content decreased in almost all six stages of dormancy and germination analyzed (S1-S6). The activity of superoxide dismutase, abscisic acid, and malondialdehyde content increased in the dormancy stages (S1-S3) and then decreased in the germination stages (S4-S6). Our results provide new insights into G. parvifolium seed dormancy and germination at the proteome and physiological levels, with implications for improving seed propagation.
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Affiliation(s)
- Ermei Chang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry , Chinese Academy of Forestry , No. 1 Dongxiaofu, Xiangshan Road , Haidian, Beijing 100091 , China
| | - Nan Deng
- Institute of Ecology , Hunan Academy of Forestry , Changsha , Hunan 410004 , China
| | - Jin Zhang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry , Chinese Academy of Forestry , No. 1 Dongxiaofu, Xiangshan Road , Haidian, Beijing 100091 , China
| | - Jianfeng Liu
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry , Chinese Academy of Forestry , No. 1 Dongxiaofu, Xiangshan Road , Haidian, Beijing 100091 , China
| | - Lanzhen Chen
- Institute of Apicultural Research , Chinese Academy of Agricultural Sciences , Beijing 100093 , China
- Risk Assessment Laboratory for Bee Products , Quality and Safety of Ministry of Agriculture , Beijing 100093 , China
| | - Xiulian Zhao
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry , Chinese Academy of Forestry , No. 1 Dongxiaofu, Xiangshan Road , Haidian, Beijing 100091 , China
| | - M Abbas
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry , Chinese Academy of Forestry , No. 1 Dongxiaofu, Xiangshan Road , Haidian, Beijing 100091 , China
- National Engineering Laboratory for Tree Breeding, College of Biological Sciences and Technology , Beijing Forestry University , Beijing 100083 , China
| | - Zeping Jiang
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry , Chinese Academy of Forestry , No. 1 Dongxiaofu, Xiangshan Road , Haidian, Beijing 100091 , China
| | - Shengqing Shi
- State Key Laboratory of Tree Genetics and Breeding, Research Institute of Forestry , Chinese Academy of Forestry , No. 1 Dongxiaofu, Xiangshan Road , Haidian, Beijing 100091 , China
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14
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Xiao Y, Kuang J, Qi X, Ye Y, Wu Z, Chen J, Lu W. A comprehensive investigation of starch degradation process and identification of a transcriptional activator MabHLH6 during banana fruit ripening. PLANT BIOTECHNOLOGY JOURNAL 2018; 16:151-164. [PMID: 28500777 PMCID: PMC5785343 DOI: 10.1111/pbi.12756] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 03/20/2017] [Accepted: 04/25/2017] [Indexed: 05/18/2023]
Abstract
Although starch degradation has been well studied in model systems such as Arabidopsis leaves and cereal seeds, this process in starchy fruits during ripening, especially in bananas, is largely unknown. In this study, 38 genes encoding starch degradation-related proteins were identified and characterized from banana fruit. Expression analysis revealed that 27 candidate genes were significantly induced during banana fruit ripening, with concomitant conversion of starch-to-sugars. Furthermore, iTRAQ-based proteomics experiments identified 18 starch degradation-associated enzymes bound to the surface of starch granules, of which 10 were markedly up-regulated during ripening. More importantly, a novel bHLH transcription factor, MabHLH6, was identified based on a yeast one-hybrid screening using MaGWD1 promoter as a bait. Transcript and protein levels of MabHLH6 were also increased during fruit ripening. Electrophoretic mobility shift assays, chromatin immunoprecipitation and transient expression experiments confirmed that MabHLH6 activates the promoters of 11 starch degradation-related genes, including MaGWD1, MaLSF2, MaBAM1, MaBAM2, MaBAM8, MaBAM10, MaAMY3, MaAMY3C, MaISA2, MaISA3 and MapGlcT2-2 by recognizing their E-box (CANNTG) motifs present in the promoters. Collectively, these findings suggest that starch degradation during banana fruit ripening may be attributed to the complex actions of numerous enzymes related to starch breakdown at transcriptional and translational levels, and that MabHLH6 may act as a positive regulator of this process via direct activation of a series of starch degradation-related genes.
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Affiliation(s)
- Yun‐yi Xiao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Jian‐fei Kuang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Xin‐na Qi
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Yu‐jie Ye
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Zhen‐Xian Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Jian‐ye Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
| | - Wang‐jin Lu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro‐bioresources/Guangdong Provincial Key Laboratory of Postharvest Science of Fruits and VegetablesCollege of HorticultureSouth China Agricultural UniversityGuangzhouChina
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The AGPase Family Proteins in Banana: Genome-Wide Identification, Phylogeny, and Expression Analyses Reveal Their Involvement in the Development, Ripening, and Abiotic/Biotic Stress Responses. Int J Mol Sci 2017; 18:ijms18081581. [PMID: 28757545 PMCID: PMC5577994 DOI: 10.3390/ijms18081581] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Revised: 07/13/2017] [Accepted: 07/18/2017] [Indexed: 11/20/2022] Open
Abstract
ADP-glucose pyrophosphorylase (AGPase) is the first rate-limiting enzyme in starch biosynthesis and plays crucial roles in multiple biological processes. Despite its importance, AGPase is poorly studied in starchy fruit crop banana (Musa acuminata L.). In this study, eight MaAGPase genes have been identified genome-wide in M. acuminata, which could be clustered into the large (APL) and small (APS) subunits. Comprehensive transcriptomic analysis revealed temporal and spatial expression variations of MaAPLs and MaAPSs and their differential responses to abiotic/biotic stresses in two banana genotypes, Fen Jiao (FJ) and BaXi Jiao (BX). MaAPS1 showed generally high expression at various developmental and ripening stages and in response to abiotic/biotic stresses in both genotypes. MaAPL-3 and -2a were specifically induced by abiotic stresses including cold, salt, and drought, as well as by fungal infection in FJ, but not in BX. The presence of hormone-related and stress-relevant cis-acting elements in the promoters of MaAGPase genes suggests that MaAGPases may play an important role in multiple biological processes. Taken together, this study provides new insights into the complex transcriptional regulation of AGPases, underlying their key roles in promoting starch biosynthesis and enhancing stress tolerance in banana.
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