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Tang Q, Wei S, Zheng X, Tu P, Tao F. APETALA2/ethylene-responsive factors in higher plant and their roles in regulation of plant stress response. Crit Rev Biotechnol 2024:1-19. [PMID: 38267262 DOI: 10.1080/07388551.2023.2299769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 11/30/2023] [Indexed: 01/26/2024]
Abstract
Plants, anchored throughout their life cycles, face a unique set of challenges from fluctuating environments and pathogenic assaults. Central to their adaptative mechanisms are transcription factors (TFs), particularly the AP2/ERF superfamily-one of the most extensive TF families unique to plants. This family plays instrumental roles in orchestrating diverse biological processes ranging from growth and development to secondary metabolism, and notably, responses to both biotic and abiotic stresses. Distinguished by the presence of the signature AP2 domain or its responsiveness to ethylene signals, the AP2/ERF superfamily has become a nexus of research focus, with increasing literature elucidating its multifaceted roles. This review provides a synoptic overview of the latest research advancements on the AP2/ERF family, spanning its taxonomy, structural nuances, prevalence in higher plants, transcriptional and post-transcriptional dynamics, and the intricate interplay in DNA-binding and target gene regulation. Special attention is accorded to the ethylene response factor B3 subgroup protein Pti5 and its role in stress response, with speculative insights into its functionalities and interaction matrix in tomatoes. The overarching goal is to pave the way for harnessing these TFs in the realms of plant genetic enhancement and novel germplasm development.
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Affiliation(s)
- Qiong Tang
- College of Standardization, China Jiliang University, Hangzhou, China
| | - Sishan Wei
- College of Standardization, China Jiliang University, Hangzhou, China
| | - Xiaodong Zheng
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou, China
| | - Pengcheng Tu
- Department of Environmental Health, Zhejiang Provincial Center for Disease Control and Prevention, Hangzhou, China
| | - Fei Tao
- College of Standardization, China Jiliang University, Hangzhou, China
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Wang Z, Xing S, Li M, Zhang Q, Yang Q, Xu P, Song B, Shang P, Yang M, Du C, Chen J, Liu S, Zhang S. Soybean WRINKLED1 protein GmWRI1a promotes flowering under long-day conditions via regulating expressions of flowering-related genes. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2023; 337:111865. [PMID: 37696474 DOI: 10.1016/j.plantsci.2023.111865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 09/05/2023] [Accepted: 09/08/2023] [Indexed: 09/13/2023]
Abstract
Flowering time is an important agronomic character that influences the adaptability and yield of soybean [Glycine max (L.) Merrill]. WRINKLED 1 (WRI1) plays an important regulatory role in plant growth and development. In this study, we found that the expression of GmWIR1a could be induced by long days. Compared with the wild type, transgenic soybean overexpressing GmWRI1a showed earlier flowering and maturity under long days but no significant changes under short days. Overexpression of GmWRI1a led to up-regulated expression of genes involved in the regulation of flowering time. The GmWRI1a protein was able to directly bind to the promoter regions of GmAP1, GmFUL1a, GmFUL2 and up-regulated their expression. GmCOL3 was identified by yeast one-hybrid library screening using the GmWRI1a promoter as bait. GmCOL3 was revealed to be a nucleus-localized protein that represses the transcription of GmWRI1a. Expression of GmCOL3 was induced by short days. Taken together, the results show that overexpression of GmWRI1a promotes flowering under long days by promoting the transcriptional activity of flowering-related genes in soybean, and that GmCOL3 binds to the GmWRI1a promoter and directly down-regulates its transcription. This discovery reveals a new function for GmWRI1a, which regulates flowering and maturity in soybean.
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Affiliation(s)
- Zhikun Wang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Siqi Xing
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Meng Li
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Qingyan Zhang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Qiang Yang
- Center for Agricultural Technology, Northeast Institute of Geography and Agroecology, CAS, Harbin, China
| | - Pengfei Xu
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Bo Song
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Ping Shang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Mingming Yang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Changhuan Du
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Jihan Chen
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China
| | - Shanshan Liu
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China.
| | - Shuzhen Zhang
- Key Laboratory of Soybean Biology in Chinese Ministry of Education/Key Laboratory of Biology and Genetics & Breeding for Soybean in Northeast China, Ministry of Agriculture, Soybean Science Research Institute, Northeast Agricultural University, Harbin, China.
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Hao JF, Wang C, Gu CR, Xu DX, Zhang L, Zhang HG. Anatomical observation and transcriptome analysis of buds reveal the association between the AP2 gene family and reproductive induction in hybrid larch (Larix kaempferi × Larix olgensis). TREE PHYSIOLOGY 2023; 43:118-129. [PMID: 36150026 PMCID: PMC9833870 DOI: 10.1093/treephys/tpac111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 09/11/2022] [Indexed: 06/16/2023]
Abstract
Hybrid larch is an excellent afforestation species in northern China. The instability of seed yield is an urgent problem to be solved. The biological characteristics related to seed setting in larch are different from those in angiosperms and other gymnosperms. Studying the developmental mechanism of the larch sporophyll can deepen our understanding of conifer reproductive development and help to ensure an adequate supply of seeds in the seed orchard. The results showed that the formation of microstrobilus primordia in hybrid larch could be observed in anatomical sections collected in the middle of July. The contents of endogenous gibberellin 3 (GA3) and abscisic acid (ABA) were higher and the contents of GA4, GA7, jasmonic acid and salicylic acid were lower in multiseeded larch. Transcriptome analysis showed that transcription factors were significantly enriched in the AP2 family. There were 23 differentially expressed genes in the buds of the multiseeded and less-seeded types, and the expression of most of these genes was higher in the buds than in the needles. We conclude that mid-July is the early stage of reproductive organ development in hybrid larch and is suitable for the study of reproductive development. GA3 and ABA may be helpful for improving seed setting in larch, and 23 AP2/EREBP family genes are involved in the regulation of reproductive development in larch.
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Affiliation(s)
- Jun-Fei Hao
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 51 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Chen Wang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 51 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Chen-Rui Gu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 51 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Dai-Xi Xu
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 51 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Lei Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 51 Hexing Road, Xiangfang District, Harbin 150040, China
| | - Han-Guo Zhang
- State Key Laboratory of Tree Genetics and Breeding, Northeast Forestry University, No. 51 Hexing Road, Xiangfang District, Harbin 150040, China
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Xie Z, Yang C, Liu S, Li M, Gu L, Peng X, Zhang Z. Identification of AP2/ERF transcription factors in Tetrastigma hemsleyanum revealed the specific roles of ERF46 under cold stress. FRONTIERS IN PLANT SCIENCE 2022; 13:936602. [PMID: 36017255 PMCID: PMC9396264 DOI: 10.3389/fpls.2022.936602] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Accepted: 07/18/2022] [Indexed: 06/15/2023]
Abstract
Tetrastigma hemsleyanum (T. hemsleyanum) is a traditional medicinal plant that is widely used in China. Cultivated T. hemsleyanum usually encounters cold stress, limiting its growth and quality at key developmental stages. APETALA2 (AP2)/ethylene-responsive factor (ERF) transcription factors (TFs) comprise one of the largest gene superfamilies in plants and are widely involved in biotic and abiotic stresses. To reveal the roles of AP2/ERF TFs during T. hemsleyanum development, 70 AP2/ERF TFs were identified in T. hemsleyanum. Among them, 18 and 2 TFs were classified into the AP2 and RAV families, respectively. The other 50 TFs belonged to the ERF family and were further divided into the ERF and (dehydration reaction element binding factor) DREB subfamilies. The ERF subfamily contained 46 TFs, while the DREB subfamily contained 4 TFs. Phylogenetic analysis indicated that AP2/ERF TFs could be classified into five groups, in which 10 conserved motifs were confirmed. Several motifs were group- or subgroup-specific, implying that they were significant for the functions of the AP2/ERF TFs of these clades. In addition, 70 AP2/ERF TFs from the five groups were used for an expression pattern analysis under three low-temperature levels, namely, -4, 0, and 4°C. The majority of these AP2/ERF TFs exhibited a positive response to cold stress conditions. Specifically, ThERF5, ThERF31, ThERF46, and ThERF55 demonstrated a more sensitive response to cold stress. Moreover, AP2/ERF TFs exhibited specific expression patterns under cold stress. Transient overexpression and RNA interference indicated that ThERF46 has a specific tolerance to cold stress. These new insights provide the basis for further studies on the roles of AP2/ERF TFs in cold stress tolerance in T. hemsleyanum.
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Affiliation(s)
- Zhuomi Xie
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Chuyun Yang
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Siyi Liu
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Mingjie Li
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Li Gu
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Xin Peng
- Ningbo Municipal Hospital of TCM, Affiliated Hospital of Zhejiang Chinese Medical University, Ningbo, China
- Medicinal Plant Resource Center, Ningbo Research Institute of Traditional Chinese Medicine, Ningbo, China
| | - Zhongyi Zhang
- College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China
- Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Fujian Agriculture and Forestry University, Fuzhou, China
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Prasad P, Khatoon U, Verma RK, Aalam S, Kumar A, Mohapatra D, Bhattacharya P, Bag SK, Sawant SV. Transcriptional Landscape of Cotton Fiber Development and Its Alliance With Fiber-Associated Traits. FRONTIERS IN PLANT SCIENCE 2022; 13:811655. [PMID: 35283936 PMCID: PMC8908376 DOI: 10.3389/fpls.2022.811655] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 01/10/2022] [Indexed: 06/14/2023]
Abstract
Cotton fiber development is still an intriguing question to understand fiber commitment and development. At different fiber developmental stages, many genes change their expression pattern and have a pivotal role in fiber quality and yield. Recently, numerous studies have been conducted for transcriptional regulation of fiber, and raw data were deposited to the public repository for comprehensive integrative analysis. Here, we remapped > 380 cotton RNAseq data with uniform mapping strategies that span ∼400 fold coverage to the genome. We identified stage-specific features related to fiber cell commitment, initiation, elongation, and Secondary Cell Wall (SCW) synthesis and their putative cis-regulatory elements for the specific regulation in fiber development. We also mined Exclusively Expressed Transcripts (EETs) that were positively selected during cotton fiber evolution and domestication. Furthermore, the expression of EETs was validated in 100 cotton genotypes through the nCounter assay and correlated with different fiber-related traits. Thus, our data mining study reveals several important features related to cotton fiber development and improvement, which were consolidated in the "CottonExpress-omics" database.
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Affiliation(s)
- Priti Prasad
- Division of Molecular Biology and Biotechnology, CSIR-National Botanical Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Uzma Khatoon
- Division of Molecular Biology and Biotechnology, CSIR-National Botanical Research Institute, Lucknow, India
- Department of Botany, University of Lucknow, Lucknow, India
| | - Rishi Kumar Verma
- Division of Molecular Biology and Biotechnology, CSIR-National Botanical Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Shahre Aalam
- Division of Molecular Biology and Biotechnology, CSIR-National Botanical Research Institute, Lucknow, India
| | - Ajay Kumar
- Division of Molecular Biology and Biotechnology, CSIR-National Botanical Research Institute, Lucknow, India
| | | | | | - Sumit K. Bag
- Division of Molecular Biology and Biotechnology, CSIR-National Botanical Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
| | - Samir V. Sawant
- Division of Molecular Biology and Biotechnology, CSIR-National Botanical Research Institute, Lucknow, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, India
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6
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Chen H, Hu L, Wang L, Wang S, Cheng X. Genome-wide identification and expression profiles of AP2/ERF transcription factor family in mung bean (Vigna radiata L.). J Appl Genet 2022; 63:223-236. [PMID: 34989979 DOI: 10.1007/s13353-021-00675-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Revised: 12/01/2021] [Accepted: 12/06/2021] [Indexed: 11/28/2022]
Abstract
Mung bean (Vigna radiata L. Wilczek) is an economically important grain legume crop in Asia, with high nutritional quality and potential in other parts of the world particularly arid and semiarid regions. Considering the potential adverse effects of drought, high salt, and other abiotic stresses on crop yield, significant efforts have been made to understand the underlying molecular mechanisms of tolerance to these abiotic stresses in legumes. In this study, a total of 186 putative AP2/ERF genes were identified, which were named VrERF1-186. These VrERF genes were classified into four main subfamilies according to the number of AP2 domains and sequence similarity, including 24 AP2 gene members, 81 ERF gene members, 79 DREB gene members, and 2 RAV members. VrERF genes are scattered across all 11 chromosomes and form small gene clusters on chromosomes due to segmental or tandem duplication. Promoter analysis revealed various cis-acting elements related to light, hormones, and stress responsiveness processes. The expression profiles of the VrERF genes in tissues during development and in response to abiotic stresses were assessed by transcriptome sequencing, and the selected reference genes were validated by qRT-PCR. A total of 174 VrERF genes were expressed in at least one of five tissues, while others showed distinct expression patterns in different tissues or under specific abiotic stress treatments, which indicates that VrERF genes are involved in developmental and environmental stress responses in V. radiata. In conclusion, the genome localization, genome-wide characterization, gene duplication, phylogenetic relationships, and expression pattern of VrERF genes in V. radiata were analyzed, and these results will lay the foundation for further functional analysis of these genes and improve stress tolerance to adverse conditions in plants.
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Affiliation(s)
- Honglin Chen
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.
| | - Liangliang Hu
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Lixia Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Suhua Wang
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Xuzhen Cheng
- Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.
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Gawarecka K, Ahn JH. Isoprenoid-Derived Metabolites and Sugars in the Regulation of Flowering Time: Does Day Length Matter? FRONTIERS IN PLANT SCIENCE 2021; 12:765995. [PMID: 35003159 PMCID: PMC8738093 DOI: 10.3389/fpls.2021.765995] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 11/22/2021] [Indexed: 05/06/2023]
Abstract
In plants, a diverse set of pathways regulate the transition to flowering, leading to remarkable developmental flexibility. Although the importance of photoperiod in the regulation of flowering time is well known, increasing evidence suggests the existence of crosstalk among the flowering pathways regulated by photoperiod and metabolic pathways. For example, isoprenoid-derived phytohormones (abscisic acid, gibberellins, brassinosteroids, and cytokinins) play important roles in regulating flowering time. Moreover, emerging evidence reveals that other metabolites, such as chlorophylls and carotenoids, as well as sugar metabolism and sugar accumulation, also affect flowering time. In this review, we summarize recent findings on the roles of isoprenoid-derived metabolites and sugars in the regulation of flowering time and how day length affects these factors.
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RNA-sequencing based gene expression landscape of guava cv. Allahabad Safeda and comparative analysis to colored cultivars. BMC Genomics 2020; 21:484. [PMID: 32669108 PMCID: PMC7364479 DOI: 10.1186/s12864-020-06883-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 07/06/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Guava (Psidium guajava L.) is an important fruit crop of tropical and subtropical areas of the world. Genomics resources in guava are scanty. RNA-Seq based tissue specific expressed genomic information, de novo transcriptome assembly, functional annotation and differential expression among contrasting genotypes has a potential to set the stage for the functional genomics for traits of commerce like colored flesh and apple color peel. RESULTS Development of fruit from flower involves orchestration of myriad molecular switches. We did comparative transcriptome sequencing on leaf, flower and fruit tissues of cv. Allahabad Safeda to understand important genes and pathways controlling fruit development. Tissue specific RNA sequencing and de novo transcriptome assembly using Trinity pipeline provided us the first reference transcriptome for guava consisting of 84,206 genes comprising 279,792 total transcripts with a N50 of 3603 bp. Blast2GO assigned annotation to 116,629 transcripts and PFam based HMM profile annotated 140,061 transcripts with protein domains. Differential expression with EdgeR identified 3033 genes in Allahabad Safeda tissues. Mapping the differentially expressed transcripts over molecular pathways indicate significant Ethylene and Abscisic acid hormonal changes and secondary metabolites, carbohydrate metabolism and fruit softening related gene transcripts during fruit development, maturation and ripening. Differential expression analysis among colored tissue comparisons in 3 cultivars Allahabad Safeda, Punjab Pink and Apple Color identified 68 candidate genes that might be controlling color development in guava fruit. Comparisons of red vs green peel in Apple Color, white pulp vs red pulp in Punjab Pink and fruit maturation vs ripening in non-colored Allahabad Safeda indicates up-regulation of ethylene biosynthesis accompanied to secondary metabolism like phenylpropanoid and monolignol pathways. CONCLUSIONS Benchmarking Universal Single-Copy Orthologs analysis of de novo transcriptome of guava with eudicots identified 93.7% complete BUSCO genes. In silico differential gene expression among tissue types of Allahabad Safeda and validation of candidate genes with qRT-PCR in contrasting color genotypes promises the utility of this first guava transcriptome for its potential of tapping the genetic elements from germplasm collections for enhancing fruit traits.
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Li WY, Wang C, Shi HH, Wang B, Wang JX, Liu YS, Ma JY, Tian SY, Zhang YW. Genome-wide analysis of ethylene-response factor family in adzuki bean and functional determination of VaERF3 under saline-alkaline stress. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2020; 147:215-222. [PMID: 31869734 DOI: 10.1016/j.plaphy.2019.12.019] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 12/12/2019] [Accepted: 12/16/2019] [Indexed: 05/24/2023]
Abstract
Ethylene-response factor (ERF) proteins are members of a transcription factor family involved in plant growth and environmental stress responses, but the biological functions of ERF members in adzuki bean (Vigna angularis var. angularis) remain unknown. In addition, it is unclear whether these proteins have a role in regulating responses to abiotic stressors. Here, we identified 47 ERF genes by analyzing the adzuki bean genome. Whole-transcriptome analyses of plants under saline-alkaline stress suggested that the expression of 13 ERF genes was induced in response to saline-alkaline stress. Analysis of the cis-acting elements showed that the promoters of these saline-alkaline stress-inducible ERF genes contained LTRs, DREs, MYBs, ABREs, MYCs, CGTCA-, and TGACG-motifs, which are involved in abiotic stress responses. The expression of VaERF3 was induced by NaHCO3, polyethylene glycol 6000, NaCl, and ABA (abscisic acid), as determined by qRT-PCR. Overexpression of VaERF3 in transgenic Arabidopsis resulted in higher levels of proline accumulation and lower malondialdehyde and reactive oxygen species contents in plants grown under saline-alkaline stress conditions. Moreover, VaERF3 encoded a nuclear-localized transcriptional activator that promoted the expression of stress-responsive genes. Collectively, these results are of great significance in elucidating the mechanisms of saline-alkaline stress responses in adzuki bean.
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Affiliation(s)
- Wei-Yu Li
- Beijing Key Laboratory of New Technology in Agricultural Application, National Demonstration Center for Experimental Plant Production Education, Beijing University of Agriculture, Beijing, 102206, China.
| | - Cheng Wang
- Beijing Key Laboratory of New Technology in Agricultural Application, National Demonstration Center for Experimental Plant Production Education, Beijing University of Agriculture, Beijing, 102206, China
| | - Heng-Hua Shi
- School of Computer and Information Engineering, Beijing University of Agriculture, Beijing, 102206, China
| | - Bo Wang
- Beijing Key Laboratory of New Technology in Agricultural Application, National Demonstration Center for Experimental Plant Production Education, Beijing University of Agriculture, Beijing, 102206, China
| | - Jing-Xuan Wang
- Beijing Key Laboratory of New Technology in Agricultural Application, National Demonstration Center for Experimental Plant Production Education, Beijing University of Agriculture, Beijing, 102206, China
| | - Yu-Shu Liu
- Beijing Key Laboratory of New Technology in Agricultural Application, National Demonstration Center for Experimental Plant Production Education, Beijing University of Agriculture, Beijing, 102206, China
| | - Jing-Yu Ma
- Beijing Key Laboratory of New Technology in Agricultural Application, National Demonstration Center for Experimental Plant Production Education, Beijing University of Agriculture, Beijing, 102206, China
| | - Sen-Ya Tian
- Beijing Key Laboratory of New Technology in Agricultural Application, National Demonstration Center for Experimental Plant Production Education, Beijing University of Agriculture, Beijing, 102206, China
| | - Yao-Wen Zhang
- Institute of Crop Sciences, Shanxi Academy of Agricultural Sciences, Taiyuan, 030001, China.
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Xie Z, Nolan TM, Jiang H, Yin Y. AP2/ERF Transcription Factor Regulatory Networks in Hormone and Abiotic Stress Responses in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2019; 10:228. [PMID: 30873200 PMCID: PMC6403161 DOI: 10.3389/fpls.2019.00228] [Citation(s) in RCA: 326] [Impact Index Per Article: 65.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Accepted: 02/11/2019] [Indexed: 05/18/2023]
Abstract
Dynamic environmental changes such as extreme temperature, water scarcity and high salinity affect plant growth, survival, and reproduction. Plants have evolved sophisticated regulatory mechanisms to adapt to these unfavorable conditions, many of which interface with plant hormone signaling pathways. Abiotic stresses alter the production and distribution of phytohormones that in turn mediate stress responses at least in part through hormone- and stress-responsive transcription factors. Among these, the APETALA2/ETHYLENE RESPONSIVE FACTOR (AP2/ERF) family transcription factors (AP2/ERFs) have emerged as key regulators of various stress responses, in which they also respond to hormones with improved plant survival during stress conditions. Apart from participation in specific stresses, AP2/ERFs are involved in a wide range of stress tolerance, enabling them to form an interconnected stress regulatory network. Additionally, many AP2/ERFs respond to the plant hormones abscisic acid (ABA) and ethylene (ET) to help activate ABA and ET dependent and independent stress-responsive genes. While some AP2/ERFs are implicated in growth and developmental processes mediated by gibberellins (GAs), cytokinins (CTK), and brassinosteroids (BRs). The involvement of AP2/ERFs in hormone signaling adds the complexity of stress regulatory network. In this review, we summarize recent studies on AP2/ERF transcription factors in hormonal and abiotic stress responses with an emphasis on selected family members in Arabidopsis. In addition, we leverage publically available Arabidopsis gene networks and transcriptome data to investigate AP2/ERF regulatory networks, providing context and important clues about the roles of diverse AP2/ERFs in controlling hormone and stress responses.
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11
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Zhang B. Transgenic Cotton: From Biotransformation Methods to Agricultural Application. METHODS IN MOLECULAR BIOLOGY (CLIFTON, N.J.) 2018; 1902:3-16. [PMID: 30543057 DOI: 10.1007/978-1-4939-8952-2_1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Transgenic cotton is among the first transgenic plants commercially adopted around the world. Since it was first introduced into the field in the middle of the 1990s, transgenic cotton has been quickly adopted by cotton farmers in many developed and developing countries. Transgenic cotton has offered many important environmental, social, and economic benefits, including reduced usage of pesticides, indirect increase of yield, minimizing environmental pollution, and reducing labor and cost. Agrobacterium-mediated genetic transformation method is the major method for obtaining transgenic cotton. However, pollen tube pathway-mediated method is also used, particularly by scientists in China, to breed commercial transgenic cotton. Although transgenic cotton plants with disease resistance, abiotic stress tolerance, and improved fiber quality have been developed in the past decades, insect-resistant and herbicide-tolerant cottons are the two dominant cottons in transgenic cotton market.
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Affiliation(s)
- Baohong Zhang
- Department of Biology, East Carolina University, Greenville, NC, USA.
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Xiao G, He P, Zhao P, Liu H, Zhang L, Pang C, Yu J. Genome-wide identification of the GhARF gene family reveals that GhARF2 and GhARF18 are involved in cotton fibre cell initiation. JOURNAL OF EXPERIMENTAL BOTANY 2018; 69:4323-4337. [PMID: 29897556 PMCID: PMC6093391 DOI: 10.1093/jxb/ery219] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 06/06/2017] [Indexed: 05/12/2023]
Abstract
Auxin signalling plays an essential role in regulating plant development. Auxin response factors (ARFs), which are critical components of auxin signalling, modulate the expression of early auxin-responsive genes by binding to auxin response factor elements (AuxREs). However, there has been no comprehensive characterization of this gene family in cotton. Here, we identified 56 GhARF genes in the assembled Gossypium hirsutum genome. This gene family was divided into 17 subfamilies, and 44 members of them were distributed across 21 chromosomes. GhARF6 and GhARF11 subfamily genes were predominantly expressed in vegetative tissues, whereas GhARF2 and GhARF18 subfamily genes were highly expressed during seed fibre cell initiation. GhARF2-1 and GhARF18-1 were exclusively expressed in trichomes, organs similar to cotton seed fibre cells, and overexpression of these genes in Arabidopsis enhances trichome initiation. Comparative transcriptome analysis combined with AuxRE prediction revealed 11 transcription factors as potential target genes of GhARF2 and GhARF18. Six of these genes were significantly expressed during seed fibre cell initiation and were bound by GhARF2-1 and GhARF18-1 in yeast one-hybrid assays. Our results suggest that GhARF2 and GhARF18 genes may be key regulators of cotton seed fibre initiation by regulating the expression of several transcription factor genes. This study deepens our understanding of auxin-mediated initiation of cotton seed fibre cells and helps us in breeding better cotton varieties in the future.
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Affiliation(s)
- Guanghui Xiao
- Key Laboratory of the Ministry of Education for Medicinal Plant Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in the Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, China
- College of Life Sciences, Shaanxi Normal University, Xi’an, China
- Correspondence: , , or
| | - Peng He
- College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Peng Zhao
- Key Laboratory of the Ministry of Education for Medicinal Plant Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in the Northwest of China, College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Hao Liu
- College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Li Zhang
- College of Life Sciences, Shaanxi Normal University, Xi’an, China
| | - Chaoyou Pang
- State Key Laboratory of Cotton Biology, Institute of Cotton Research of Chinese Academy of Agricultural Sciences, Anyang, China
- Correspondence: , , or
| | - Jianing Yu
- College of Life Sciences, Shaanxi Normal University, Xi’an, China
- Correspondence: , , or
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13
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Comparative Analysis of MicroRNA Expression in Three Paulownia Species with Phytoplasma Infection. FORESTS 2018. [DOI: 10.3390/f9060302] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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14
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Shu K, Luo X, Meng Y, Yang W. Toward a Molecular Understanding of Abscisic Acid Actions in Floral Transition. PLANT & CELL PHYSIOLOGY 2018; 59:215-221. [PMID: 29361058 DOI: 10.1093/pcp/pcy007] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2017] [Accepted: 01/03/2018] [Indexed: 05/08/2023]
Abstract
The transition from the vegetative growth phase to flowering is a crucial checkpoint for plant reproduction and survival, especially under environmental stress conditions. Numerous factors regulate flowering time, including exogenous environmental cues such as day length and temperature, as well as salt and drought stresses, and endogenous phytohormone signaling cascades. Gibberellins and ABA are one classic combination of phytohormones which antagonistically regulate several biological processes, including seed dormancy and germination, primary root growth and seedling development. As regards control of flowering time, gibberellin exhibits a positive role, and represents an important pathway in the regulation of floral transition. However, over the past decades, numerous investigations have demonstrated that the contribution of the stress hormone ABA to floral transition is still controversial, as both positive and negative effects have been documented. It is important to determine why and how ABA shows this contradictory effect on flowering time. In this up to date review, primarily based on recent publications and emerging data, we summarize the distinct and contrasting roles of ABA on floral transition, while the detailed molecular mechanisms underlying these roles are discussed. Finally, the remaining challenges and open questions in this topic are presented.
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Affiliation(s)
- Kai Shu
- Institute of Ecological Agriculture, Department of Plant Physiology and Biotechnology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Xiaofeng Luo
- Institute of Ecological Agriculture, Department of Plant Physiology and Biotechnology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Yongjie Meng
- Institute of Ecological Agriculture, Department of Plant Physiology and Biotechnology, Sichuan Agricultural University, Chengdu, 611130, China
| | - Wenyu Yang
- Institute of Ecological Agriculture, Department of Plant Physiology and Biotechnology, Sichuan Agricultural University, Chengdu, 611130, China
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15
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Wang J, Li Z, Lei M, Fu Y, Zhao J, Ao M, Xu L. Integrated DNA methylome and transcriptome analysis reveals the ethylene-induced flowering pathway genes in pineapple. Sci Rep 2017; 7:17167. [PMID: 29215068 PMCID: PMC5719354 DOI: 10.1038/s41598-017-17460-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Accepted: 11/27/2017] [Indexed: 01/09/2023] Open
Abstract
Ethylene has long been used to promote flowering in pineapple production. Ethylene-induced flowering is dose dependent, with a critical threshold level of ethylene response factors needed to trigger flowering. The mechanism of ethylene-induced flowering is still unclear. Here, we integrated isoform sequencing (iso-seq), Illumina short-reads sequencing and whole-genome bisulfite sequencing (WGBS) to explore the early changes of transcriptomic and DNA methylation in pineapple following high-concentration ethylene (HE) and low-concentration ethylene (LE) treatment. Iso-seq produced 122,338 transcripts, including 26,893 alternative splicing isoforms, 8,090 novel transcripts and 12,536 candidate long non-coding RNAs. The WGBS results suggested a decrease in CG methylation and increase in CHH methylation following HE treatment. The LE and HE treatments induced drastic changes in transcriptome and DNA methylome, with LE inducing the initial response to flower induction and HE inducing the subsequent response. The dose-dependent induction of FLOWERING LOCUS T-like genes (FTLs) may have contributed to dose-dependent flowering induction in pineapple by ethylene. Alterations in DNA methylation, lncRNAs and multiple genes may be involved in the regulation of FTLs. Our data provided a landscape of the transcriptome and DNA methylome and revealed a candidate network that regulates flowering time in pineapple, which may promote further studies.
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Affiliation(s)
- Jiabin Wang
- Institute of Tropical Crop Genetic Resources, Chinese Academy of Tropical Agricultural Sciences, Danzhou, 571737, Hainan, China.,Ministry of Agriculture Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Danzhou, 571737, Hainan, China.,Hainan Province Key Laboratory of Tropical Crops Germplasm Resources Genetic Improvement and Innovation, Danzhou, 571737, Hainan, China
| | - Zhiying Li
- Institute of Tropical Crop Genetic Resources, Chinese Academy of Tropical Agricultural Sciences, Danzhou, 571737, Hainan, China.,Ministry of Agriculture Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Danzhou, 571737, Hainan, China.,Hainan Province Key Laboratory of Tropical Crops Germplasm Resources Genetic Improvement and Innovation, Danzhou, 571737, Hainan, China
| | - Ming Lei
- Institute of Tropical Crop Genetic Resources, Chinese Academy of Tropical Agricultural Sciences, Danzhou, 571737, Hainan, China.,Ministry of Agriculture Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Danzhou, 571737, Hainan, China.,Hainan Province Key Laboratory of Tropical Crops Germplasm Resources Genetic Improvement and Innovation, Danzhou, 571737, Hainan, China
| | - Yunliu Fu
- Institute of Tropical Crop Genetic Resources, Chinese Academy of Tropical Agricultural Sciences, Danzhou, 571737, Hainan, China.,Ministry of Agriculture Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Danzhou, 571737, Hainan, China.,Hainan Province Key Laboratory of Tropical Crops Germplasm Resources Genetic Improvement and Innovation, Danzhou, 571737, Hainan, China
| | - Jiaju Zhao
- Institute of Tropical Crop Genetic Resources, Chinese Academy of Tropical Agricultural Sciences, Danzhou, 571737, Hainan, China.,Ministry of Agriculture Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Danzhou, 571737, Hainan, China.,Hainan Province Key Laboratory of Tropical Crops Germplasm Resources Genetic Improvement and Innovation, Danzhou, 571737, Hainan, China
| | - Mengfei Ao
- Institute of Tropical Crop Genetic Resources, Chinese Academy of Tropical Agricultural Sciences, Danzhou, 571737, Hainan, China.,Ministry of Agriculture Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Danzhou, 571737, Hainan, China.,Hainan Province Key Laboratory of Tropical Crops Germplasm Resources Genetic Improvement and Innovation, Danzhou, 571737, Hainan, China
| | - Li Xu
- Institute of Tropical Crop Genetic Resources, Chinese Academy of Tropical Agricultural Sciences, Danzhou, 571737, Hainan, China. .,Ministry of Agriculture Key Laboratory of Crop Gene Resources and Germplasm Enhancement in Southern China, Danzhou, 571737, Hainan, China. .,Hainan Province Key Laboratory of Tropical Crops Germplasm Resources Genetic Improvement and Innovation, Danzhou, 571737, Hainan, China.
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16
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Li H, Wang Y, Wu M, Li L, Li C, Han Z, Yuan J, Chen C, Song W, Wang C. Genome-Wide Identification of AP2/ERF Transcription Factors in Cauliflower and Expression Profiling of the ERF Family under Salt and Drought Stresses. FRONTIERS IN PLANT SCIENCE 2017; 8:946. [PMID: 28642765 PMCID: PMC5462956 DOI: 10.3389/fpls.2017.00946] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2017] [Accepted: 05/22/2017] [Indexed: 05/18/2023]
Abstract
The AP2/ERF transcription factors (TFs) comprise one of the largest gene superfamilies in plants. These TFs perform vital roles in plant growth, development, and responses to biotic and abiotic stresses. In this study, 171 AP2/ERF TFs were identified in cauliflower (Brassica oleracea L. var. botrytis), one of the most important horticultural crops in Brassica. Among these TFs, 15, 9, and 1 TFs were classified into the AP2, RAV, and Soloist family, respectively. The other 146 TFs belong to ERF family, which were further divided into the ERF and DREB subfamilies. The ERF subfamily contained 91 TFs, while the DREB subfamily contained 55 TFs. Phylogenetic analysis results indicated that the AP2/ERF TFs can be classified into 13 groups, in which 25 conserved motifs were confirmed. Some motifs were group- or subgroup- specific, implying that they are significant to the functions of the AP2/ERF TFs of these clades. In addition, 35 AP2/ERF TFs from the 13 groups were selected randomly and then used for expression pattern analysis under salt and drought stresses. The majority of these AP2/ERF TFs exhibited positive responses to these stress conditions. In specific, Bra-botrytis-ERF054a, Bra-botrytis-ERF056, and Bra-botrytis-CRF2a demonstrated rapid responses. By contrast, six AP2/ERF TFs were showed to delay responses to both stresses. The AP2/ERF TFs exhibiting specific expression patterns under salt or drought stresses were also confirmed. Further functional analysis indicated that ectopic overexpression of Bra-botrytis-ERF056 could increase tolerance to both salt and drought treatments. These findings provide new insights into the AP2/ERF TFs present in cauliflower, and offer candidate AP2/ERF TFs for further studies on their roles in salt and drought stress tolerance.
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Affiliation(s)
- Hui Li
- College of Life Sciences, Nankai UniversityTianjin, China
- College of Horticulture and Landscape, Tianjin Agricultural UniversityTianjin, China
| | - Yu Wang
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Mei Wu
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Lihong Li
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Cong Li
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Zhanpin Han
- College of Horticulture and Landscape, Tianjin Agricultural UniversityTianjin, China
| | - Jiye Yuan
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Chengbin Chen
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Wenqin Song
- College of Life Sciences, Nankai UniversityTianjin, China
| | - Chunguo Wang
- College of Life Sciences, Nankai UniversityTianjin, China
- *Correspondence: Chunguo Wang
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H. Hanafy A, Darwish E, G. Alobaid M. Impact of Putrescine and 24-epibrassinolide on Growth, Yield and Chemical Constituents of Cotton (Gossypium barbadense L.) Plant Grown under Drought Stress Conditions. ACTA ACUST UNITED AC 2016. [DOI: 10.3923/ajps.2017.9.23] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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18
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McGarry RC, Prewitt SF, Culpepper S, Eshed Y, Lifschitz E, Ayre BG. Monopodial and sympodial branching architecture in cotton is differentially regulated by the Gossypium hirsutum SINGLE FLOWER TRUSS and SELF-PRUNING orthologs. THE NEW PHYTOLOGIST 2016; 212:244-58. [PMID: 27292411 DOI: 10.1111/nph.14037] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2016] [Accepted: 04/26/2016] [Indexed: 05/08/2023]
Abstract
Domestication of upland cotton (Gossypium hirsutum) converted it from a lanky photoperiodic perennial to a day-neutral annual row-crop. Residual perennial traits, however, complicate irrigation and crop management, and more determinate architectures are desired. Cotton simultaneously maintains robust monopodial indeterminate shoots and sympodial determinate shoots. We questioned if and how the FLOWERING LOCUS T/SINGLE FLOWER TRUSS (SFT)-like and TERMINAL FLOWER1/SELF-PRUNING (SP)-like genes control the balance of monopodial and sympodial growth in a woody perennial with complex growth habit. Virus-based manipulation of GhSP and GhSFT expression enabled unprecedented functional analysis of cotton development. GhSP maintains growth in all apices; in its absence, both monopodial and sympodial branch systems terminate precociously. GhSFT encodes a florigenic signal stimulating rapid onset of sympodial branching and flowering in side shoots of wild photoperiodic and modern day-neutral accessions. High florigen concentrations did not alter monopodial apices, implying that once a cotton apex is SP-determined, it cannot be reset by florigen. GhSP is also essential to establish and maintain cambial activity. Dynamic changes in GhSFT and GhSP levels navigate meristems between monopodial and sympodial programs in a single plant. SFT and SP influenced cotton domestication and are ideal targets for further agricultural optimization.
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Affiliation(s)
- Roisin C McGarry
- Department of Biological Sciences, University of North Texas, 1155 Union Circle 305220, Denton, TX, 76203-5017, USA
| | - Sarah F Prewitt
- Department of Biological Sciences, University of North Texas, 1155 Union Circle 305220, Denton, TX, 76203-5017, USA
| | - Samantha Culpepper
- Department of Biological Sciences, University of North Texas, 1155 Union Circle 305220, Denton, TX, 76203-5017, USA
| | - Yuval Eshed
- Plant Sciences, Weizmann Institute of Science, Rehovot, 7610001, Israel
| | - Eliezer Lifschitz
- Department of Biology, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Brian G Ayre
- Department of Biological Sciences, University of North Texas, 1155 Union Circle 305220, Denton, TX, 76203-5017, USA
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