scholarly journals Genome-wide investigation and expression profiling of polyphenol oxidase (PPO) family genes uncover likely functions in organ development and stress responses in populus trichocarpa

2021 ◽  
Author(s):  
Fang He ◽  
Yu-Jie Shi ◽  
Qian Zhao ◽  
Kuang-Ji Zhao ◽  
Xing-Lei Cui ◽  
...  
Keyword(s):  
Polyphenol Oxidase ◽  
Stress Responses ◽  
Populus Trichocarpa ◽  
Expression Patterns ◽  
Whole Genome Sequence ◽  
Whole Genome ◽  
Genetic Progress ◽  
Element Analysis ◽  
Genome Wide ◽  
A Genome

Abstract Background: Trees such as Populus are planted extensively for reforestation and afforestation. However, their successful establishment greatly depends upon ambient environmental conditions and their relative resistance to abiotic as well as biotic stress. Polyphenol oxidase (PPO) is a ubiquitous metalloproteinase in plants, which plays crucial roles in plant resistance against biotic and abiotic stresses. Although the whole genome sequence of populus trichocarpa has long been published, little is known about the PPO genes in Populus, especially those related to drought stress, mechanical damage, insect feeding and hormone response at the whole genome level. Results: In the recent research, a genome-wide analysis of the Poplar PPOs family was finished and 18 PtrPPOs gene were identified. Then, bioinformatics and qRT-PCR were applied to analyze the gene structure, phylogeny, chromosomal localization, gene replication, Cis-elements, expression patterns of PtrPPOs. Sequence analysis revealed that 2/3 of the PtrPPO genes not contained introns. Phylogenetic analysis revealed that all PPOs gene were split into 11 subfamilies, and woody plants differentiated a large number of PPO genes. 18 PtrPPOs gene were disproportionally apportioned on 19 chromosomes, and the number of three pairs of segmented replication genes and four tandem repeat genomes were detected in poplars. Cis-acting element analysis identified a large number elements of growth and development, secondary metabolism process, and stress-related elements on the promoters of different PPO members. Furthermore, PtrPPO genes were expressed preferably in young plant tissues and fruits. In addition, some PtrPPOs could be significantly induced by PEG, ABA and JA, thus revealing their potential role in regulating stress response. Conclusions: Comprehensive analysis is helpful to select candidate PPO genes for the follow-up study of the biological function, and molecular genetic progress of stress resistance in forest trees provides genetic resources.

scholarly journals Genome-wide investigation and expression profiling of polyphenol oxidase (PPO) family genes uncover likely functions in organ development and stress responses in Populus trichocarpa

BMC Genomics ◽  
2021 ◽  
Vol 22 (1) ◽  
Author(s):  
Fang He ◽  
Yu-Jie Shi ◽  
Qian Zhao ◽  
Kuang-Ji Zhao ◽  
Xing-Lei Cui ◽  
...  
Keyword(s):  
Polyphenol Oxidase ◽  
Stress Responses ◽  
Populus Trichocarpa ◽  
Expression Patterns ◽  
Mechanical Damage ◽  
Whole Genome Sequence ◽  
Whole Genome ◽  
Element Analysis ◽  
Genome Wide ◽  
A Genome

Abstract Background Trees such as Populus are planted extensively for reforestation and afforestation. However, their successful establishment greatly depends upon ambient environmental conditions and their relative resistance to abiotic and biotic stresses. Polyphenol oxidase (PPO) is a ubiquitous metalloproteinase in plants, which plays crucial roles in mediating plant resistance against biotic and abiotic stresses. Although the whole genome sequence of Populus trichocarpa has long been published, little is known about the PPO genes in Populus, especially those related to drought stress, mechanical damage, and insect feeding. Additionally, there is a paucity of information regarding hormonal responses at the whole genome level. Results A genome-wide analysis of the poplar PPO family was performed in the present study, and 18 PtrPPO genes were identified. Bioinformatics and qRT-PCR were then used to analyze the gene structure, phylogeny, chromosomal localization, gene replication, cis-elements, and expression patterns of PtrPPOs. Sequence analysis revealed that two-thirds of the PtrPPO genes lacked intronic sequences. Phylogenetic analysis showed that all PPO genes were categorized into 11 groups, and woody plants harbored many PPO genes. Eighteen PtrPPO genes were disproportionally localized on 19 chromosomes, and 3 pairs of segmented replication genes and 4 tandem repeat genomes were detected in poplars. Cis-acting element analysis identified numerous growth and developmental elements, secondary metabolism processes, and stress-related elements in the promoters of different PPO members. Furthermore, PtrPPO genes were expressed preferentially in the tissues and fruits of young plants. In addition, the expression of some PtrPPOs could be significantly induced by polyethylene glycol, abscisic acid, and methyl jasmonate, thereby revealing their potential role in regulating the stress response. Currently, we identified potential upstream TFs of PtrPPOs using bioinformatics. Conclusions Comprehensive analysis is helpful for selecting candidate PPO genes for follow-up studies on biological function, and progress in understanding the molecular genetic basis of stress resistance in forest trees might lead to the development of genetic resources.

scholarly journals Genome-Wide Investigation of the NF-X1 Gene Family in Populus trichocarpa Expression Profiles during Development and Stress

2021 ◽  
Vol 22 (9) ◽  
pp. 4664
Author(s):  
Fang He ◽  
Yu-Jie Shi ◽  
Jia-Xuan Mi ◽  
Kuang-Ji Zhao ◽  
Xing-Lei Cui ◽  
...  
Keyword(s):  
Expression Profiles ◽  
Populus Trichocarpa ◽  
Expression Patterns ◽  
Molecular Genetic ◽  
Mechanical Damage ◽  
Whole Genome Sequence ◽  
Whole Genome ◽  
Genetic Progress ◽  
Whole Genome Analysis ◽  
Element Analysis

Poplar are planted extensively in reforestation and afforestation. However, their successful establishment largely depends on the environmental conditions of the newly established plantation and their resistance to abiotic as well as biotic stresses. NF-X1, a widespread transcription factor in plants, plays an irreplaceable role in plant growth, development, and stress tolerance. Although the whole genome sequence of Populus trichocarpa has been published for a long time, little is known about the NF-X1 genes in poplar, especially those related to drought stress, mechanical damage, insect feeding, and hormone response at the whole genome level. In this study, whole genome analysis of the poplar NF-X1 family was performed, and 4 PtrNF-X1 genes were identified. Then, bioinformatics analysis and qRT-PCR were applied to analyze the gene structure, phylogeny, chromosomal localization, gene replication, Cis-elements, and expression patterns of PtrNF-X1genes. Sequence analysis revealed that one-quarter of the PtrNF-X1 genes did not contain introns. Phylogenetic analysis revealed that all NF-X1 genes were split into three subfamilies. The number of two pairs of segmented replication genes were detected in poplars. Cis-acting element analysis identified a large number of elements of growth and development and stress-related elements on the promoters of different NF-X1 members. In addition, some PtrNF-X1 could be significantly induced by polyethylene glycol (PEG) and abscisic acid (ABA), thus revealing their potential role in regulating stress response. Comprehensive analysis is helpful in selecting candidate NF-X1 genes for the follow-up study of the biological function, and molecular genetic progress of stress resistance in forest trees provides genetic resources.

Genome-wide identification of citrus calmodulin-like genes and their expression in response to arbuscular mycorrhizal fungi colonization and drought

2021 ◽  
Author(s):  
Bo Shu ◽  
YaChao Xie ◽  
Fei Zhang ◽  
Dejian Zhang ◽  
Chunyan Liu ◽  
...  
Keyword(s):  
Abiotic Stress ◽  
Drought Stress ◽  
Arbuscular Mycorrhizal Fungi ◽  
Stress Responses ◽  
Mycorrhizal Fungi ◽  
Expression Patterns ◽  
Arbuscular Mycorrhizal ◽  
Biotic And Abiotic Stress ◽  
Genome Wide ◽  
A Genome

Calmodulin-like (CML) proteins represent a diverse family of protein in plants, and play significant roles in biotic and abiotic stress responses. However, the involvement of citrus CMLs in plant responses to drought stress (abiotic stress) and arbuscular mycorrhizal fungi (AMF) colonization remain relatively unknown. We characterized the citrus CML genes by analyzing the EF-hand domains and a genome-wide search, and identified a total of 38 such genes, distributed across at least nine chromosomes. Six tandem duplication clusters were observed in the CsCMLs, and 12 CsCMLs exhibited syntenic relationships with Arabidopsis thaliana CMLs. Gene expression analysis showed that 29 CsCMLs were expressed in the roots, and exhibited differential expression patterns. The regulation of CsCMLs expression was not consistent with the cis-elements identified in their promoters. CsCML2, 3, and 5 were upregulated in response to drought stress, and AMF colonization repressed the expression of CsCML7, 9, 12, 13,20, 27, 28, and 35,and induced that of CsCML1, 2, 3, 5, 8, 10, 11, 14, 15, 16, 18, 25, 30, 33, and 37. Furthermore, AMF colonization and drought stress exerted a synergistic effect, evident from the enhanced repression of CsCML7, 9, 12, 13, 27, 28, and 35 and enhanced expression of CsCML2, 3, and 5 under AMF colonization and drought stress. The present study provides valuable insights into the CsCML gene family and its responses to AMF colonization and drought stress.

Identification and expression analysis of chloroplast ribonucleoproteins (cpRNPs) in Arabidopsis and rice

Genome ◽  
2020 ◽  
Author(s):  
Jiawen Wu ◽  
Huimin Liu ◽  
Shan Lu ◽  
Jian Hua ◽  
Baohong Zou
Keyword(s):  
Expression Analysis ◽  
Stress Responses ◽  
Expression Patterns ◽  
Tissue Expression ◽  
Stability Control ◽  
Rna Recognition Motif ◽  
Chloroplast Targeting ◽  
Genome Wide ◽  
A Genome ◽  
Targeting Signal

Chloroplast ribonucleoproteins (cpRNPs) are implicated in splicing, editing and stability control of chloroplast RNAs as well as in regulating development and stress tolerance. To facilitate a comprehensive understanding of their functions, we carried out a genome-wide identification, curation, and phylogenetic analysis of cpRNP genes in Oryza sativa (rice) and Arabidopsis thaliana (Arabidopsis). Ten cpRNP genes were identified in each of Arabidopsis and rice genomes based on the presence of two RRM (RNA recognition motif) domains and an N-terminal chloroplast targeting signal peptide in the predicted proteins. These proteins are localized to chloroplasts. Gene expression analysis revealed that cpRNPs have differential tissue expression patterns and some cpRNPs are induced by abiotic stresses such as cold, heat and drought. Taken together, our study provides a comprehensive annotation of the cpRNP gene family and their expression patterns in Arabidopsis and rice which will facilitate further studies on their roles in plant growth and stress responses.

Genome-wide characterization and expression profiling of the MAPKKK genes in Gossypium arboreum L.

Genome ◽  
2019 ◽  
Vol 62 (9) ◽  
pp. 609-622 ◽  
Author(s):  
Weidong Zhu ◽  
Wei Tan ◽  
Qiulin Li ◽  
Xiugui Chen ◽  
Junjuan Wang ◽  
...  
Keyword(s):  
Gene Family ◽  
Stress Responses ◽  
Expression Patterns ◽  
Mitogen Activated Protein Kinase ◽  
Gossypium Arboreum ◽  
Developmental Processes ◽  
Protein Motifs ◽  
Genome Wide ◽  
A Genome ◽  
Salt And Drought Stresses

Mitogen-activated protein kinase kinase kinases (MAPKKKs) are important components of MAPK cascades, which have different functions during developmental processes and stress responses. To date, there has been no systematic investigation of this gene family in the diploid cotton Gossypium arboreum L. In this study, a genome-wide survey was performed that identified 78 MAPKKK genes in G. arboreum. Phylogenetic analysis classified these genes into three subgroups: 14 belonged to ZIK, 20 to MEKK, and 44 to Raf. Chromosome location, phylogeny, and the conserved protein motifs of the MAPKKK gene family in G. arboreum were analyzed. The MAPKKK genes had a scattered genomic distribution across 13 chromosomes. The members in the same subfamily shared similar conserved motifs. The MAPKKK expression patterns were analyzed in mature leaves, stems, roots, and at different ovule developmental stages, as well as under salt and drought stresses. Transcriptome analysis showed that 76 MAPKKK genes had different transcript accumulation patterns in the tested tissues and 38 MAPKKK genes were differentially expressed in response to salt and drought stresses. These results lay the foundation for understanding the complex mechanisms behind MAPKKK-mediated developmental processes and abiotic stress-signaling transduction pathways in cotton.

scholarly journals Genome-wide identification, molecular evolution, and expression analysis provide new insights into the APETALA2/ethylene responsive factor (AP2/ERF) superfamily in Dimocarpus longan Lour

2019 ◽  
Author(s):  
Shuting Zhang ◽  
Chen Zhu ◽  
Yumeng Lyu ◽  
Yan Chen ◽  
Zihao Zhang ◽  
...  
Keyword(s):  
Molecular Evolution ◽  
Stress Responses ◽  
Expression Patterns ◽  
Functional Characterization ◽  
Transcriptional Level ◽  
Developmental Processes ◽  
Genome Wide ◽  
A Genome ◽  
Dimocarpus Longan ◽  
Ethylene Responsive Factor

Abstract Background: The APETALA2/ethylene responsive factor (AP2/ERF) superfamily members are transcription factors that regulate diverse developmental processes and stress responses in plants. They have been identified in many plants. However, little is known about the AP2/ERF superfamily in longan (Dimocarpus longan Lour.), which is an important tropical/subtropical evergreen fruit tree that produces a variety of bioactive compounds with rich nutritional and medicinal value. We conducted a genome-wide analysis of the AP2/ERF superfamily and its roles in somatic embryogenesis (SE) and developmental processes in longan. Results: A genome-wide survey of the AP2/ERF superfamily was carried out to discover its evolution and function in longan. We identified 125 longan AP2/ERF genes and classified them into the ERF (101 members), AP2 (19 members), RAV (four members) families, and one Soloist. The AP2 and Soloist genes contained one to ten introns, whereas 87 genes in the ERF and RAV families had no introns. Hormone signaling molecules such as methyl jasmonate (MeJA), abscisic acid (ABA), gibberellin, auxin, and salicylic acid (SA), and stress response cis-acting element low-temperature (55) and defense (49) boxes also were identified. We detected diverse single nucleotide polymorphisms (SNPs) between the 'Hong He Zi' (HHZ) and 'SI JI MI' (SJM) cultivars. The number of insertions and deletions (InDels) was far fewer than SNPs. The AP2 family members exhibited more alternative splicing (AS) events in different developmental processes of longan than members of the other families. Expression pattern analysis revealed that some AP2/ERF members regulated early SE and developmental processes in longan seed, root, and flower, and responded to exogenous hormones such as MeJA, SA, and ABA, and 2,4-D, a synthetic auxin. Protein interaction predictions indicated that the Baby Boom (BBM) transcription factor, which was up-regulated at the transcriptional level in early SE, may interact with the LALF/AGL15 network. Conclusions: The comprehensive analysis of molecular evolution and expression patterns suggested that the AP2/ERF superfamily may plays an important role in longan, especially in early SE, and in seed, root, flower, and young fruit. This systematic analysis provides a foundation for further functional characterization of the AP2/ERF superfamily with the aim of longan improvement.

scholarly journals Genome-wide investigation of the AP2/ERF gene family in  ginger: evolution and expression profiles during rhizome and inflorescence development

2021 ◽  
Author(s):  
Haitao Xing ◽  
Yusong Jiang ◽  
Xiaoling Long ◽  
Xiaoli Wu ◽  
Yun Ren ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Whole Genome Sequence ◽  
Chromosomal Distribution ◽  
Inflorescence Development ◽  
Systematic Analysis ◽  
Genome Wide ◽  
A Genome ◽  
Erf Transcription Factors

Abstract Background:AP2/ERF transcription factors perform indispensable functions in various biological processes, such as plant growth, development, biotic and abiotic stresses responses. The AP2/ERF transcription factor family has been identified in many plants, and several AP2/ERF transcription factors from Arabidopsis (Arabidopsis thaliana) have been functionally characterized. However, little research has been conducted on the AP2/ERF genes of ginger (Zingiber officinale), which is an important edible and medicinal horticultural plant. The recently published whole genome sequence of ginger allowed us to study the tissue and expression profiles of AP2/ERF genes in ginger on a genome-wide basis.Results:In this study, 163 AP2/ERF genes of ginger (ZoAP2/ERF) were identified and renamed according to the chromosomal distribution of the ZoAP2/ERF genes. According to the number conserved domains and gene structure, the AP2/ERF genes were divided into three subfamilies by phylogenetic analysis, namely, AP2 (35 members), ERF (125 members) and RAV (3 members). A total of 10 motifs were detected in ginger AP2/ERF genes, and some of the unique motifs were found to be important for the function of ZoAP2/ERF genes.Conclusion:A comprehensive analysis of AP2/ERF gene expression patterns in different tissues and rhizome development stages by transcriptom sequence and quantitative real-time PCR (qRT-PCR) showed that they played an important role in the growth and development of ginger, and genes that might regulate rhizome and flower development were preliminarily identified. This systematic analysis establishes a foundation for further studies of the functional characteristics of ZoAP2/ERF genes and improvement of ginger.

scholarly journals Genome-Wide Identification, Characterization and Expression Analysis of TCP Transcription Factors in Petunia

2020 ◽  
Vol 21 (18) ◽  
pp. 6594
Author(s):  
Shuting Zhang ◽  
Qin Zhou ◽  
Feng Chen ◽  
Lan Wu ◽  
Baojun Liu ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Plant Growth ◽  
Gene Family ◽  
Stress Responses ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Leaf Morphogenesis ◽  
Systematic Analysis ◽  
Genome Wide ◽  
A Genome

The plant-specific TCP transcription factors are well-characterized in both monocots and dicots, which have been implicated in multiple aspects of plant biological processes such as leaf morphogenesis and senescence, lateral branching, flower development and hormone crosstalk. However, no systematic analysis of the petunia TCP gene family has been described. In this work, a total of 66 petunia TCP genes (32 PaTCP genes in P. axillaris and 34 PiTCP genes in P. inflata) were identified. Subsequently, a systematic analysis of 32 PaTCP genes was performed. The phylogenetic analysis combined with structural analysis clearly distinguished the 32 PaTCP proteins into two classes—class Ι and class Ⅱ. Class Ⅱ was further divided into two subclades, namely, the CIN-TCP subclade and the CYC/TB1 subclade. Plenty of cis-acting elements responsible for plant growth and development, phytohormone and/or stress responses were identified in the promoter of PaTCPs. Distinct spatial expression patterns were determined among PaTCP genes, suggesting that these genes may have diverse regulatory roles in plant growth development. Furthermore, differential temporal expression patterns were observed between the large- and small-flowered petunia lines for most PaTCP genes, suggesting that these genes are likely to be related to petal development and/or petal size in petunia. The spatiotemporal expression profiles and promoter analysis of PaTCPs indicated that these genes play important roles in petunia diverse developmental processes that may work via multiple hormone pathways. Moreover, three PaTCP-YFP fusion proteins were detected in nuclei through subcellular localization analysis. This is the first comprehensive analysis of the petunia TCP gene family on a genome-wide scale, which provides the basis for further functional characterization of this gene family in petunia.

Genome-Wide Identification and Expression Profile Analysis of WRKY Family Genes in Teak (Tectona Grandis)

2020 ◽  
Author(s):  
Xi-Yang Wang ◽  
Jie Song ◽  
Jia-Hui Xing ◽  
Jun-Feng Liang ◽  
Bi-ying Ke
Keyword(s):  
Profile Analysis ◽  
Expression Profiles ◽  
Expression Patterns ◽  
Large Family ◽  
Tectona Grandis ◽  
Duplication Event ◽  
Whole Genome Sequence ◽  
Expression Profile Analysis ◽  
Genome Wide ◽  
A Genome

Abstract Background: WRKY proteins comprise a large family of transcription factors that play vital roles in many aspects of physiological processes and adaption to environment. However, little information was available about the WRKY genes in teak (Tectona grandis). The recent release of the whole-genome sequence of teak allowed us to perform a genome-wide investigation into the organization and expression profiling of teak WRKY genes. Results: In the present study, 102 teak WRKY (TgWRKY) genes were identified and renamed as per their positions on chromosome and scaffolds. According to their structural and phylogenetic analysis, the 102 TgWRKYs were further classified into three main groups with seceral subgroups. The segmental duplication event played a major role in the expansion of teak WRKY gene family and three WGD events were inferred. Expression profiles derived from transcriptome data exhibited distinct expression patterns of TgWRKY genes in various tissues and inresponse to different abiotic stress.Conclusions: 102 TgWRKY genes were identified in teak and the structure of their encoded proteins, their evolutionary characteristics and expression patterns were examined in this study. This study generated an important resource that will provide helpful information for further exploration of the TgWRKY genes role in the regulatory mechanism in response to abiotic stresses.

scholarly journals Genome-wide survey of soybean papain-like cysteine proteases and their expression analysis in root nodule symbiosis

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Songli Yuan ◽  
Danxia Ke ◽  
Rong Li ◽  
Xiangyong Li ◽  
Lei Wang ◽  
...  
Keyword(s):  
Root Nodule ◽  
Expression Patterns ◽  
Cysteine Proteases ◽  
Nodule Development ◽  
Whole Genome ◽  
Root Nodule Symbiosis ◽  
Genome Wide ◽  
A Genome ◽  
Genome Wide Survey ◽  
Nodule Symbiosis

Abstract Background Plant papain-like cysteine proteases (PLCPs) are a large class of proteolytic enzymes and play important roles in root nodule symbiosis (RNS), while the whole-genome studies of PLCP family genes in legume are quite limited, and the roles of Glycine max PLCPs (GmPLCPs) in nodulation, nodule development and senescence are not fully understood. Results In the present study, we identified 97 GmPLCPs and performed a genome-wide survey to explore the expansion of soybean PLCP family genes and their relationships to RNS. Nineteen paralogous pairs of genomic segments, consisting of 77 GmPLCPs, formed by whole-genome duplication (WGD) events were identified, showing a high degree of complexity in duplication. Phylogenetic analysis among different species showed that the lineage differentiation of GmPLCPs occurred after family expansion, and large tandem repeat segment were specifically in soybean. The expression patterns of GmPLCPs in symbiosis-related tissues and nodules identified RNS-related GmPLCPs and provided insights into their putative symbiotic functions in soybean. The symbiotic function analyses showed that a RNS-related GmPLCP gene (Glyma.04G190700) really participate in nodulation and nodule development. Conclusions Our findings improved our understanding of the functional diversity of legume PLCP family genes, and provided insights into the putative roles of the legume PLCPs in nodulation, nodule development and senescence.

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