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Huang X, Liu H, Wu F, Wei W, Zeng Z, Xu J, Chen C, Hao Y, Xia R, Liu Y. Diversification of FT-like genes in the PEBP family contributes to the variation of flowering traits in Sapindaceae species. MOLECULAR HORTICULTURE 2024; 4:28. [PMID: 39010247 PMCID: PMC11251392 DOI: 10.1186/s43897-024-00104-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Accepted: 06/14/2024] [Indexed: 07/17/2024]
Abstract
Many species of Sapindaceae, such as lychee, longan, and rambutan, provide nutritious and delicious fruit. Understanding the molecular genetic mechanisms that underlie the regulation of flowering is essential for securing flower and fruit productivity. Most endogenous and exogenous flowering cues are integrated into the florigen encoded by FLOWERING LOCUS T. However, the regulatory mechanisms of flowering remain poorly understood in Sapindaceae. Here, we identified 60 phosphatidylethanolamine-binding protein-coding genes from six Sapindaceae plants. Gene duplication events led to the emergence of two or more paralogs of the FT gene that have evolved antagonistic functions in Sapindaceae. Among them, the FT1-like genes are functionally conserved and promote flowering, while the FT2-like genes likely serve as repressors that delay flowering. Importantly, we show here that the natural variation at nucleotide position - 1437 of the lychee FT1 promoter determined the binding affinity of the SVP protein (LcSVP9), which was a negative regulator of flowering, resulting in the differential expression of LcFT1, which in turn affected flowering time in lychee. This finding provides a potential molecular marker for breeding lychee. Taken together, our results reveal some crucial aspects of FT gene family genetics that underlie the regulation of flowering in Sapindaceae.
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Affiliation(s)
- Xing Huang
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China
| | - Hongsen Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China
| | - Fengqi Wu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China
| | - Wanchun Wei
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China
| | - Zaohai Zeng
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China
| | - Jing Xu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China
| | - Chengjie Chen
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China
| | - Yanwei Hao
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China.
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China.
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China.
| | - Rui Xia
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China.
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China.
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China.
| | - Yuanlong Liu
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangdong Guangzhou, 510642, China.
- South China Agricultural University, Guangdong Laboratory for Lingnan Modern Agriculture, South China Agricultural University, Guangdong Guangzhou, 510642, China.
- South China Agricultural University, Key Laboratory of Biology and Germplasm Enhancement of Horticultural Crops in South China, Ministry of Agriculture and Rural Affair, South China Agricultural University, Guangdong Guangzhou, 510642, China.
- College of Plant Science and Technology, Huazhong Agricultural University, Hubei Wuhan, 430070, China.
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Chen M, Dai S, Chen D, Chen H, Feng N, Zheng D. Unveiling the translational dynamics of lychee (Litchi chinesis Sonn.) in response to cold stress. BMC Genomics 2024; 25:686. [PMID: 38992605 PMCID: PMC11241792 DOI: 10.1186/s12864-024-10591-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 07/03/2024] [Indexed: 07/13/2024] Open
Abstract
Cold stress poses a significant threat to the quality and productivity of lychee (Litchi chinensis Sonn.). While previous research has extensively explored the genomic and transcriptomic responses to cold stress in lychee, the translatome has not been thoroughly investigated. This study delves into the translatomic landscape of the 'Xiangjinfeng' cultivar under both control and low-temperature conditions using RNA sequencing and ribosome profiling. We uncovered a significant divergence between the transcriptomic and translatomic responses to cold exposure. Additionally, bioinformatics analyses underscored the crucial role of codon occupancy in lychee's cold tolerance mechanisms. Our findings reveal that the modulation of translation via codon occupancy is a vital strategy to abiotic stress. Specifically, the study identifies ribosome stalling, particularly at the E site AAU codon, as a key element of the translation machinery in lychee's response to cold stress. This work enhances our understanding of the molecular dynamics of lychee's reaction to cold stress and emphasizes the essential role of translational regulation in the plant's environmental adaptability.
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Affiliation(s)
- Mingming Chen
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China.
- National Saline-Tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China.
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, China.
| | - Shuangfeng Dai
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China
- National Saline-Tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China
| | - Daming Chen
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China
- National Saline-Tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China
| | - Haomin Chen
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China
- National Saline-Tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China
| | - Naijie Feng
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China.
- National Saline-Tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China.
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, China.
| | - Dianfeng Zheng
- College of Coastal Agricultural Sciences, Guangdong Ocean University, Zhanjiang, 524008, China.
- National Saline-Tolerant Rice Technology Innovation Center, South China, Zhanjiang, 524008, China.
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, 518108, China.
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Ma X, Xie X, He Z, Wang F, Fan R, Chen Q, Zhang H, Huang Z, Wu H, Zhao M, Li J. A LcDOF5.6-LcRbohD regulatory module controls the reactive oxygen species-mediated fruitlet abscission in litchi. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2023; 113:954-968. [PMID: 36587275 DOI: 10.1111/tpj.16092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2022] [Revised: 12/22/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
Reactive oxygen species (ROS) have been emerging as a key regulator in plant organ abscission. However, the mechanism underlying the regulation of ROS homeostasis in the abscission zone (AZ) is not completely established. Here, we report that a DOF (DNA binding with one finger) transcription factor LcDOF5.6 can suppress the litchi fruitlet abscission through repressing the ROS accumulation in fruitlet AZ (FAZ). The expression of LcRbohD, a homolog of the Arabidopsis RBOHs that are critical for ROS production, was significantly increased during the litchi fruitlet abscission, in parallel with an increased accumulation of ROS in FAZ. In contrast, silencing of LcRbohD reduced the ROS accumulation in FAZ and decreased the fruitlet abscission in litchi. Using in vitro and in vivo assays, we revealed that LcDOF5.6 was shown to inhibit the expression of LcRbohD via direct binding to its promoter. Consistently, silencing of LcDOF5.6 increased the expression of LcRbohD, concurrently with higher ROS accumulation in FAZ and increased fruitlet abscission. Furthermore, the expression of key genes (LcIDL1, LcHSL2, LcACO2, LcACS1, and LcEIL3) in INFLORESCENCE DEFICIENT IN ABSCISSION signaling and ethylene pathways were altered in LcRbohD-silenced and LcDOF5.6-silenced FAZ cells. Taken together, our results demonstrate an important role of the LcDOF5.6-LcRbohD module during litchi fruitlet abscission. Our findings provide new insights into the molecular regulatory network of organ abscission.
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Affiliation(s)
- Xingshuai Ma
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Xianlin Xie
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Zidi He
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Fei Wang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Ruixin Fan
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Qingxin Chen
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Hang Zhang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Zhiqiang Huang
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Hong Wu
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
| | - Minglei Zhao
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Jianguo Li
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China
- State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources, South China Agricultural University, Guangzhou, 510642, China
- Key Laboratory of Biology and Genetic Improvement of Horticultural Crops (South China), Ministry of Agriculture and Rural Affairs, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
- Guangdong Litchi Engineering Research Center, College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
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Morais ERDC, de Medeiros NMC, da Silva FL, de Sousa IAL, de Oliveira IGB, Meneses CHSG, Scortecci KC. Redox homeostasis at SAM: a new role of HINT protein. PLANTA 2022; 257:12. [PMID: 36520227 DOI: 10.1007/s00425-022-04044-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
ScHINT1 was identified at sugarcane SAM using subtractive libraries. Here, by bioinformatic tools, two-hybrid approach, and biochemical assays, we proposed that its role might be associated to control redox homeostasis. Such control is important for plant development and flowering transition, and this is ensured with some protein partners such as PAL and SBT that interact with ScHINT1. The shoot apical meristem transition from vegetative to reproductive is a crucial step for plants. In sugarcane (Saccharum spp.), this process is not well known, and it has an important impact on production due to field reduction. In view of this, ScHINT1 (Sugarcane HISTIDINE TRIAD NUCLEOTIDE-BINDING PROTEIN) was identified previously by subtractive cDNA libraries using Shoot Apical Meristem (SAM) by our group. This protein is a member of the HIT superfamily that was composed of hydrolase with an AMP site ligation. To better understand the role of ScHINT1 in sugarcane flowering, here its function in SAM was characterized using different approaches such as bioinformatics, two-hybrid assays, transgenic plants, and biochemical assays. ScHINT1 was conserved in plants, and it was grouped into four clades (HINT1, HINT2, HINT3, and HINT4). The 3D model proposed that ScHINT1 might be active as it was able to ligate to AMP subtract. Moreover, the two-hybrid approach identified two protein interactions: subtilase and phenylalanine ammonia-lyase. The evolutionary tree highlighted the relationships that each sequence has with specific subfamilies and different proteins. The 3D models constructed reveal structure conservation when compared with other PDB-related crystals, which indicates probable functional activity for the sugarcane models assessed. The interactome analysis showed a connection to different proteins that have antioxidative functions in apical meristems. Lastly, the transgenic plants with 35S::ScHINT1_AS (anti-sense orientation) produced more flowers than wild-type or 35S::ScHINT1_S (sense). Alpha-tocopherol and antioxidant enzymes measurement showed that their levels were higher in 35S::ScHINT_S plants than in 35S::ScHINT1_AS or wild-type plants. These results proposed that ScHINT1 might have an important role with other proteins in orchestrating this complex network for plant development and flowering.
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Affiliation(s)
- Emanoelly Roberta de Carvalho Morais
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
- Programa de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Nathalia Maira Cabral de Medeiros
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
- Programa de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Francinaldo Leite da Silva
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Isabel Andrade Lopes de Sousa
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
- Programa de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil
| | - Izamara Gesiele Bezerra de Oliveira
- Departamento de Biologia - Centro de Ciências Biológicas e da Saúde/Programa de Pós-Graduação em Ciências Agrárias, Universidade Estadual da Paraíba, Rua Baraúnas, 351, Bairro Universitário, Campina Grande, PB, 58429-500, Brazil
| | - Carlos Henrique Salvino Gadelha Meneses
- Departamento de Biologia - Centro de Ciências Biológicas e da Saúde/Programa de Pós-Graduação em Ciências Agrárias, Universidade Estadual da Paraíba, Rua Baraúnas, 351, Bairro Universitário, Campina Grande, PB, 58429-500, Brazil
| | - Katia Castanho Scortecci
- Departamento de Biologia Celular e Genética - Centro de Biociências, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil.
- Programa de Pós-Graduação em Bioquímica e Biologia Molecular, Universidade Federal do Rio Grande do Norte, Campus Universitário UFRN, Bairro Lagoa Nova, Natal, RN, 59072-970, Brazil.
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Wang B, Li W, Xu K, Lei Y, Zhao D, Li X, Zhang J, Zhang Z. A splice site mutation in the FvePHP gene is associated with leaf development and flowering time in woodland strawberry. HORTICULTURE RESEARCH 2022; 10:uhac249. [PMID: 36643753 PMCID: PMC9832950 DOI: 10.1093/hr/uhac249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Accepted: 11/01/2022] [Indexed: 06/17/2023]
Abstract
Leaves and flowers are crucial for the growth and development of higher plants. In this study we identified a mutant with narrow leaflets and early flowering (nlef) in an ethyl methanesulfonate-mutagenized population of woodland strawberry (Fragaria vesca) and aimed to identify the candidate gene. Genetic analysis revealed that a single recessive gene, nlef, controlled the mutant phenotype. We found that FvH4_1g25470, which encodes a putative DNA polymerase α with a polymerase and histidinol phosphatase domain (PHP), might be the candidate gene, using bulked segregant analysis with whole-genome sequencing, molecular markers, and cloning analyses. A splice donor site mutation (C to T) at the 5' end of the second intron led to an erroneous splice event that reduced the expression level of the full-length transcript of FvePHP in mutant plants. FvePHP was localized in the nucleus and was highly expressed in leaves. Silencing of FvePHP using the virus-induced gene silencing method resulted in partial developmental defects in strawberry leaves. Overexpression of the FvePHP gene can largely restore the mutant phenotype. The expression levels of FveSEP1, FveSEP3, FveAP1, FveFUL, and FveFT were higher in the mutants than those in 'Yellow Wonder' plants, probably contributing to the early flowering phenotype in mutant plants. Our results indicate that mutation in FvePHP is associated with multiple developmental pathways. These results aid in understanding the role of DNA polymerase in strawberry development.
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Affiliation(s)
- Baotian Wang
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China
- Laboratory of Protected Horticulture (Shenyang Agricultural University), Ministry of Education, Shenyang, People’s Republic of China
| | - Weijia Li
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China
- Laboratory of Protected Horticulture (Shenyang Agricultural University), Ministry of Education, Shenyang, People’s Republic of China
- Institute of Carbon Materials Science, Shanxi Datong University, Datong, 037009, China
| | - Kexin Xu
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China
- Laboratory of Protected Horticulture (Shenyang Agricultural University), Ministry of Education, Shenyang, People’s Republic of China
| | - Yingying Lei
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China
- Laboratory of Protected Horticulture (Shenyang Agricultural University), Ministry of Education, Shenyang, People’s Republic of China
| | - Di Zhao
- Analytical and Testing Center, Shenyang Agricultural University, Shenyang, 110866, China
| | - Xue Li
- Liaoning Key Laboratory of Strawberry Breeding and Cultivation, College of Horticulture, Shenyang Agricultural University, Shenyang, 110866, China
- Laboratory of Protected Horticulture (Shenyang Agricultural University), Ministry of Education, Shenyang, People’s Republic of China
| | - Junxiang Zhang
- Correspondence: Zhihong Zhang, E-mail: ; Tel: +86 024 88487143; Fax: +86 024 88487143. Junxiang Zhang, E-mail: ; Tel: +86 024 88487143; Fax: +86 024 88487143
| | - Zhihong Zhang
- Correspondence: Zhihong Zhang, E-mail: ; Tel: +86 024 88487143; Fax: +86 024 88487143. Junxiang Zhang, E-mail: ; Tel: +86 024 88487143; Fax: +86 024 88487143
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6
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Shi M, Wang C, Wang P, Zhang M, Liao W. Methylation in DNA, histone, and RNA during flowering under stress condition: A review. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2022; 324:111431. [PMID: 36028071 DOI: 10.1016/j.plantsci.2022.111431] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 08/07/2022] [Accepted: 08/19/2022] [Indexed: 06/15/2023]
Abstract
Flowering is the most critical transition period in the whole lifecycle of plants, and it is a highly sensitive period to stress. New combinations of temperature, drought stress, carbon dioxide and other abiotic/biotic conditions resulting from contemporary climate change affect the flowering process. Plants have evolved several strategies to deal with environmental stresses, including epigenetic modifications. Numerous studies show that environmental stresses trigger methylation/demethylation during flowering to preserve/accelerate plant lifecycle. What's more, histone and DNA methylation can be induced to respond to stresses, resulting in changes of flowering gene expression and enhancing stress tolerance in plants. Furthermore, RNA methylation may influence stress-regulated flowering by regulating mRNA stability and antioxidant mechanism. Our review presents the involvement of methylation in stress-repressed and stress-induced flowering. The crosstalk between methylation and small RNAs, phytohormones and exogenous substances (such as salicylic acid, nitric oxide) during flowering under different stresses were discussed. The latest regulatory evidence of RNA methylation in stress-regulated flowering was collected for the first time. Meanwhile, the limited evidences of methylation in biotic stress-induced flowering were summarized. Thus, the review provides insights into understanding of methylation mechanism in stress-regulated flowering and makes use for the development of regulating plant flowering at epigenetic level in the future.
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Affiliation(s)
- Meimei Shi
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Chunlei Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Peng Wang
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China
| | - Meiling Zhang
- College of Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Weibiao Liao
- College of Horticulture, Gansu Agricultural University, Lanzhou 730070, China.
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7
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Mou Z, Wang H, Chen S, Reiter RJ, Zhao D. Molecular mechanisms and evolutionary history of phytomelatonin in flowering. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:5840-5850. [PMID: 35443058 DOI: 10.1093/jxb/erac164] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2022] [Accepted: 04/15/2022] [Indexed: 06/14/2023]
Abstract
Flowering is a critical stage in plant life history, which is coordinated by environmental signals and endogenous cues. Phytomelatonin is a widely distributed indoleamine present in all living organisms and plays pleiotropic roles in plant growth and development. Recent evidence has established that phytomelatonin could modulate flowering in many species, probably in a concentration-dependent manner. Phytomelatonin seems to associate with floral meristem identification and floral organ formation, and the fluctuation of phytomelatonin might be important for flowering. Regarding the underlying mechanisms, phytomelatonin interacts with the central components of floral gene regulatory networks directly or indirectly, including the MADS-box gene family, phytohormones, and reactive oxygen species (ROS). From an evolutionary point of view, the actions of phytomelatonin in flowering probably evolved during the period of the diversification of flowering plants and could be regarded as a functional extension of its primary activities. The presumed evolutionary history of phytomelatonin-modulated flowering is proposed, presented in the chronological order of the appearance of phytomelatonin and core flowering regulators, namely DELLA proteins, ROS, and phytohormones. Further efforts are needed to address some intriguing aspects, such as the exploration of the association between phytomelatonin and photoperiodic flowering, phytomelatonin-related floral MADS-box genes, the crosstalk between phytomelatonin and phytohormones, as well as its potential applications in agriculture.
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Affiliation(s)
- Zongmin Mou
- School of Ecology and Environmental Science, Yunnan University, Kunming, China
- Biocontrol Engineering Research Center of Plant Disease and Pest, Yunnan University, Kunming, China
- Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China
| | - Houping Wang
- State Key Laboratory for Conservation and Utilization of Bio-resources in Yunnan, Yunnan University, Kunming, China
| | - Suiyun Chen
- School of Ecology and Environmental Science, Yunnan University, Kunming, China
- Biocontrol Engineering Research Center of Plant Disease and Pest, Yunnan University, Kunming, China
- Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China
| | - Russel J Reiter
- Department of Cell Systems and Anatomy, UT Health San Antonio, Long School of Medicine, San Antonio, TX, USA
| | - Dake Zhao
- School of Ecology and Environmental Science, Yunnan University, Kunming, China
- Biocontrol Engineering Research Center of Plant Disease and Pest, Yunnan University, Kunming, China
- Biocontrol Engineering Research Center of Crop Disease and Pest, Yunnan University, Kunming, China
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8
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Cronje RB, Hajari E, Jonker A, Ratlapane IM, Huang X, Theron KI, Hoffman EW. Foliar application of ethephon induces bud dormancy and affects gene expression of dormancy- and flowering-related genes in 'Mauritius' litchi (Litchi chinensis Sonn.). JOURNAL OF PLANT PHYSIOLOGY 2022; 276:153768. [PMID: 35872424 DOI: 10.1016/j.jplph.2022.153768] [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: 04/05/2022] [Revised: 06/08/2022] [Accepted: 07/10/2022] [Indexed: 06/15/2023]
Abstract
A previous study showed that foliar application of ethephon to litchi trees with mature shoots and dormant terminal buds during autumn successfully inhibited new vegetative shoot growth prior to floral induction thereby promoting carbohydrate accumulation and flowering. However, the functional mechanisms of ethylene, the breakdown product of ethephon, in the leaves and terminal buds of litchi and its involvement in the flowering process is largely unknown. Therefore, this study aimed to investigate the phenological, physiological and molecular changes underlying ethephon application and its associations with bud dormancy and flowering in litchi. Ethephon was applied as a single full canopy spray at a concentration of 1000 mg⋅L-1 to 'Mauritius' litchi trees with mature vegetative shoots and dormant terminal buds during late autumn of 2018 (mid-April; Southern Hemisphere). Untreated trees served as a control. Phenological characteristics, such as bud dormancy and panicle development, leaf chlorophyll (as an indicator of shoot maturity), ethylene evolution, gene expression levels of flowering- (LcFT2, LcFLC and LcAP1), dormancy- (LcSVP1 and LcSVP2) and ethylene pathway-related (LcEIN3) genes and non-structural carbohydrates were determined in terminal buds, leaves and/or shoots. Ethephon application induced bud dormancy, significantly delayed panicle emergence and promoted pure floral panicle development under more favorable inductive conditions. Ethylene evolution increased sharply 2 h after application in both leaves and terminal buds, but decreased rapidly thereafter in the leaves, while remaining high in terminal buds for seven days before gradually declining. Ethephon application significantly increased relative expression of LcEIN3 and LcFLC in terminal buds one day after application, while LcFT2 expression in leaves and LcAP1 expression in terminal buds were significantly increased at the bud break stage. Significant treatments differences were also observed for various carbohydrate metabolites in leaves and shoots at the bud break or floral initiation stage. Our study provided evidence that ethephon application plays an important role in the physiological and molecular regulation of bud dormancy of litchi. By influencing the time of bud break, ethephon application can be a useful tool to manage panicle emergence under less inductive conditions.
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Affiliation(s)
- Regina B Cronje
- Agricultural Research Council-Tropical and Subtropical Crops, Mbombela, 1200, South Africa.
| | - Elliosha Hajari
- Agricultural Research Council-Tropical and Subtropical Crops, Mbombela, 1200, South Africa
| | - Arnold Jonker
- Agricultural Research Council-Tropical and Subtropical Crops, Mbombela, 1200, South Africa
| | - Innocent M Ratlapane
- Agricultural Research Council-Tropical and Subtropical Crops, Mbombela, 1200, South Africa
| | - Xuming Huang
- College of Horticulture, South China Agricultural University, Guangzhou, 510642, China
| | - Karen I Theron
- Department of Horticultural Science, Stellenbosch University, Matieland, 7600, South Africa
| | - Eleanora W Hoffman
- Department of Horticultural Science, Stellenbosch University, Matieland, 7600, South Africa
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Zhang X, Liu H, Huang L, Zhou B. Identification of Chilling-Responsive Genes in Litchi chinensis by Transcriptomic Analysis Underlying Phytohormones and Antioxidant Systems. Int J Mol Sci 2022; 23:ijms23158424. [PMID: 35955559 PMCID: PMC9369065 DOI: 10.3390/ijms23158424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2022] [Revised: 07/24/2022] [Accepted: 07/27/2022] [Indexed: 11/25/2022] Open
Abstract
Litchi (Litchi chinensis Sonn.) is an important subtropical and tropical evergreen fruit tree that is seriously affected by chilling stress. In order to identify genes that may be involved in the response to chilling in litchi, we investigate the physiological and biochemical changes under chilling stress and construct 12 RNA-Seq libraries of leaf samples at 0, 4, 8, and 12 days of chilling. The results show that antioxidant enzymes are activated by chilling treatments. Comparing the transcriptome data of the four time points, we screen 2496 chilling-responsive genes (CRGs), from which we identify 63 genes related to the antioxidant system (AO-CRGs) and 54 ABA, 40 IAA, 37 CTK, 27 ETH, 21 BR, 13 GA, 35 JA, 29 SA, and 4 SL signal transduction-related genes. Expression pattern analysis shows that the expression trends of the 28 candidate genes detected by qRT-PCR are similar to those detected by RNA-Seq, indicating the reliability of our RNA-Seq data. Partial Least Squares Structural Equation Modeling (PLS-SEM) analysis of the RNA-Seq data suggests a model for the litchi plants in response to chilling stress that alters the expression of the plant hormone signaling-related genes, the transcription factor-encoding genes LcICE1, LcCBFs, and LcbZIPs, and the antioxidant system-related genes. This study provides candidate genes for the future breeding of litchi cultivars with high chilling resistance, and elucidates possible pathways for litchi in response to chilling using transcriptomic data.
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Yi F, Huo M, Li J, Yu J. Time-series transcriptomics reveals a drought-responsive temporal network and crosstalk between drought stress and the circadian clock in foxtail millet. THE PLANT JOURNAL : FOR CELL AND MOLECULAR BIOLOGY 2022; 110:1213-1228. [PMID: 35262997 DOI: 10.1111/tpj.15725] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 02/23/2022] [Accepted: 03/03/2022] [Indexed: 06/14/2023]
Abstract
Drought stress is a serious factor affecting crop growth and production worldwide. The circadian clock has been identified as key to improving regional adaptability of plants. However, our understanding of the contribution of the circadian clock to drought response and the impacts of drought stress on the circadian clock in plants is still limited. To explore the interactions between the circadian clock and drought stress, foxtail millet seedlings were treated with simulated drought (20% polyethylene glycol-6000) treatment starting at the day (DD) onset zeitgeber time 0 (ZT0, lights on) and at the night (DN) onset zeitgeber time 16 (ZT16, lights off). A high temporal-resolution transcriptomic investigation was performed using DD and DN samples collected at intervals of 2 or 4 h within a 24-h drought-treatment period. Overall, we identified 13 294 drought-responsive genes (DRGs). Among these DRGs, 7931 were common between DD and DN samples, 2638 were specific to DD, and 2725 were specific to DN. Additionally, we identified 1257 circadian genes, of which 67% were DRGs. Interestingly, with drought treatment starting at the day for 8, 12 or 16 h, the circadian phase shifted to 12 h. We also found that the circadian clock led to different day and night drought-responsive pathways. The identification of DRG_Clock (DRG and circadian clock) and DRG_NonClock (DRG and not circadian clock) genes provides a reference for selecting candidate drought resistance genes. Our work reveals the temporal drought-response process and crosstalk between drought stress and the circadian clock in foxtail millet.
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Affiliation(s)
- Fei Yi
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
- State Key Laboratory of Plant Physiology and Biochemistry, Engineering Research Center of Plant Growth Regulator, Ministry of Education, College of Agronomy and Biotechnology, China Agricultural University, Beijing, 100193, China
| | - Mingyue Huo
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
| | - Jianrui Li
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
- State Key Laboratory of Plant Physiology and Biochemistry, National Maize Improvement Center, Department of Plant Genetics and Breeding, China Agricultural University, Beijing, 100193, China
| | - Jingjuan Yu
- State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, 100193, China
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