1
|
Zhang S, Yan C, Lu T, Fan Y, Ren Y, Zhao J, Shan X, Guan Y, Song P, Li D, Hu H. New insights into molecular features of the genome-wide AOX family and their responses to various stresses in common wheat (Triticum aestivum L.). Gene 2023; 888:147756. [PMID: 37659597 DOI: 10.1016/j.gene.2023.147756] [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: 05/20/2023] [Revised: 08/22/2023] [Accepted: 08/31/2023] [Indexed: 09/04/2023]
Abstract
Alternative oxidase (AOX) is an important terminal oxidase involved in the alternative oxidation pathway in plants, which is closely related to various biotic and abiotic stress responses. However, a comprehensive research on AOX gene family of wheat is still lacking. In this study, the members of wheat AOX (TaAOX) family were identified, and their molecular characteristics and gene expression patterns were systematically investigated. Seventeen TaAOX genes were identified from Chinese Spring (CS) genome, which were mapped on 7 chromosomes and mainly clustered on the long arm's distal end of the second homologous groups. Phylogenetic analysis showed that TaAOX genes were classified into four subgroups (Ia, Ib, Ic, and Id), and the Ia subgroup possessed the most members. Tandem duplication and segmental duplication events were found during the evolution of TaAOX genes and they were affected by purifying selection demonstrated by Ka/Ks analysis. The exon numbers of this family gene varied greatly from 1 to 9. Except for Ta3BSAOX14, all the proteins encoded by the other 16 TaAOX genes contained the amino acid residues of the key active sites in the AOX domain (cd01053). The expression patterns of TaAOX genes in various tissues and under abiotic and biotic stresses were analyzed using public transcriptome data, furthermore, qRT-PCR analysis was performed for some selected TaAOX genes, and the results suggested that most members of this gene family play an important role in response to different stresses in common wheat. Our results provide basic information and valuable reference for further exploring the gene function of TaAOX family by using gene editing, RNAi, VIGS, and other technologies.
Collapse
Affiliation(s)
- Shengli Zhang
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China.
| | - Cuiping Yan
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China
| | - Tairui Lu
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China
| | - Yuchao Fan
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China
| | - Yueming Ren
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China
| | - Jishun Zhao
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China
| | - Xiaojing Shan
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China
| | - Yuanyuan Guan
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China
| | - Puwen Song
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China
| | - Dongfang Li
- School of Resource and Environmental Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China
| | - Haiyan Hu
- School of Life Sciences, Henan Institute of Science and Technology, Xinxiang, Henan, China; Henan Engineering Research Center of Crop Genome Editing, Henan Collaborative Innovation Center of Modern Biological Breeding, Xinxiang, Henan, China
| |
Collapse
|
2
|
Xiao C, He L, Qiu W, Wang Z, He X, Xiao Y, Sun Z, Tong Z, Jiang Y. Guijing2501 ( Citrus unshiu) Has Stronger Cold Tolerance Due to Higher Photoprotective Capacity as Revealed by Comparative Transcriptomic and Physiological Analysis and Overexpression of Early Light-Induced Protein. Int J Mol Sci 2023; 24:15956. [PMID: 37958939 PMCID: PMC10647585 DOI: 10.3390/ijms242115956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 10/13/2023] [Accepted: 11/01/2023] [Indexed: 11/15/2023] Open
Abstract
Cold is one of the major limiting factors for citrus production, particularly extreme cold waves. Therefore, it is of great importance to develop cold-tolerant varieties and clarify their cold tolerance mechanisms in citrus breeding. In this study, comparative transcriptomic and physiological analyses were performed to dissect the cold tolerance mechanism of Guijing2501 (GJ2501), a new satsuma mandarin (Citrus unshiu) variety with about 1 °C lower LT50 (the median lethal temperature) relative to Guijing (GJ). The physiological analysis results revealed that GJ2501 is more cold-tolerant with less photoinhibition, PSII photodamage, and MDA accumulation, but higher POD activity than GJ under cold stress. Comparative transcriptomic analysis identified 4200 DEGs between GJ and GJ2501, as well as 4884 and 5580 up-regulated DEGs, and 5288 and 5862 down-regulated DEGs in response to cold stress in GJ and GJ2501, respectively. "Photosynthesis, light harvesting" and "photosystem" were the specific and most significantly enriched GO terms in GJ2501 in response to cold stress. Two CuELIP1 genes (encoding early light-induced proteins) related to the elimination of PSII photodamage and photoinhibition were remarkably up-regulated (by about 1000-fold) by cold stress in GJ2501 as indicated by RT-qPCR verification. Overexpression of CuELIP1 from GJ2501 in transgenic Arabidopsis protected PSII against photoinhibition under cold stress. Taken together, the cold tolerance of GJ2501 may be ascribed to its higher photoprotective capacity under cold stress.
Collapse
Affiliation(s)
| | | | | | | | | | | | | | - Zhu Tong
- Hubei Key Laboratory of Germplasm Innovation and Utilization of Fruit Trees, Institute of Fruit and Tea, Hubei Academy of Agricultural Sciences, Wuhan 430064, China; (C.X.); (L.H.); (W.Q.); (Z.W.); (X.H.); (Y.X.); (Z.S.)
| | - Yingchun Jiang
- Hubei Key Laboratory of Germplasm Innovation and Utilization of Fruit Trees, Institute of Fruit and Tea, Hubei Academy of Agricultural Sciences, Wuhan 430064, China; (C.X.); (L.H.); (W.Q.); (Z.W.); (X.H.); (Y.X.); (Z.S.)
| |
Collapse
|
3
|
Wang X, Geng X, Bi X, Li R, Chen Y, Lu C. Genome-wide identification of AOX family genes in Moso bamboo and functional analysis of PeAOX1b_2 in drought and salinity stress tolerance. PLANT CELL REPORTS 2022; 41:2321-2339. [PMID: 36063182 DOI: 10.1007/s00299-022-02923-5] [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: 07/11/2022] [Accepted: 08/25/2022] [Indexed: 06/15/2023]
Abstract
Five PeAOX genes from Moso bamboo genome were identified. PeAOX1b_2-OE improved tolerance to drought and salinity stress in Arabidopsis, indicating it is involved in positive regulation of abiotic stress response. Mitochondrial alternative oxidase (AOX), the important respiratory terminal oxidase in organisms, catalyzes the energy wasteful cyanide (CN)-resistant respiration, which can improve abiotic stresses tolerance and is considered as one of the functional markers for plant resistance breeding. Here, a total of five putative AOX genes (PeAOXs) were identified and characterized in a monocotyledonous woody grass Moso bamboo (Phyllostachys edulis). Phylogenetic analysis revealed that PeAOXs belonged to AOX1 subfamily, and were named PeAOX1a_1, PeAOX1a_2, PeAOX1b_1, PeAOX1b_2 and PeAOX1c, respectively. Evolutionary and divergence patterns analysis revealed that the PeAOX, OsAOX, and BdAOX families experienced positive purifying selection and may have undergone a large-scale duplication event roughly 1.35-155.90 million years ago. Additionally, the organ-specific expression analysis showed that 80% of PeAOX members were mainly expressed in leaf. Promoter sequence analysis of PeAOXs revealed cis-acting regulatory elements (CAREs) responding to abiotic stress. Most PeAOX genes were significantly upregulated after methyl jasmonate (MeJA) and abscisic acid (ABA) treatment. Moreover, under salinity and drought stresses, the ectopic overexpression of PeAOX1b_2 in Arabidopsis enhanced seed germination and seedling establishment, increased the total respiratory rate and the proportion of AOX respiratory pathway in leaf, and enhanced antioxidant ability, suggesting that PeAOX1b_2 is crucial for abiotic stress resistance in Moso bamboo.
Collapse
Affiliation(s)
- Xiaojing Wang
- National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Xin Geng
- National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Xiaorui Bi
- National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Rongchen Li
- National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China
| | - Yuzhen Chen
- National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China.
| | - Cunfu Lu
- National Engineering Research Center of Tree Breeding and Ecological Restoration, College of Biological Sciences and Biotechnology, Beijing Forestry University, Beijing, 100083, China.
| |
Collapse
|
4
|
Campos MD, Campos C, Nogales A, Cardoso H. Carrot AOX2a Transcript Profile Responds to Growth and Chilling Exposure. PLANTS (BASEL, SWITZERLAND) 2021; 10:plants10112369. [PMID: 34834732 PMCID: PMC8625938 DOI: 10.3390/plants10112369] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 10/28/2021] [Accepted: 10/29/2021] [Indexed: 05/28/2023]
Abstract
Alternative oxidase (AOX) is a key enzyme of the alternative respiration, known to be involved in plant development and in response to various stresses. To verify the role of DcAOX1 and DcAOX2a genes in carrot tap root growth and in response to cold stress, their expression was analyzed in two experiments: during root growth for 13 weeks and in response to a cold challenge trial of 7 days, in both cases using different carrot cultivars. Carrot root growth is initially characterized by an increase in length, followed by a strong increase in weight. DcAOX2a presented the highest expression levels during the initial stages of root growth for all cultivars, but DcAOX1 showed no particular trend in expression. Cold stress had a negative impact on root growth, and generally up-regulated DcAOX2a with no consistent effect on DcAOX1. The identification of cis-acting regulatory elements (CAREs) located at the promoters of both genes showed putative sequences involved in cold stress responsiveness, as well as growth. However, DcAOX2a promoter presented more CAREs related to hormonal pathways, including abscisic acid and gibberellins synthesis, than DcAOX1. These results point to a dual role of DcAOX2a on carrot tap root secondary growth and cold stress response.
Collapse
Affiliation(s)
- Maria Doroteia Campos
- MED—Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (C.C.); (A.N.)
| | - Catarina Campos
- MED—Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (C.C.); (A.N.)
| | - Amaia Nogales
- MED—Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (C.C.); (A.N.)
- LEAF—Linking Landscape, Environment, Agriculture and Food Research Center, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal
| | - Hélia Cardoso
- MED—Mediterranean Institute for Agriculture, Environment and Development, Instituto de Investigação e Formação Avançada, Universidade de Évora, Pólo da Mitra, Ap. 94, 7006-554 Évora, Portugal; (C.C.); (A.N.)
| |
Collapse
|