Genomic location and expression analysis of expansin gene family reveals the evolutionary and functional significance in Triticum aestivum

Li, Nana; Pu, Yanyan; Gong, Yongchao; Yu, Yanli; Ding, Hanfeng

doi:10.1007/s13258-016-0446-y

Cited by 14 publications

(8 citation statements)

References 59 publications

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“…Expansins are known to be involved in the extension and relaxation of cell walls and are able to regulate the development of the root system (Cosgrove, 2000, 2015; Li et al, 2003; Sampedro and Cosgrove, 2005). Many expansin genes have been identified in plant species, including Arabidopsis (Sampedro et al, 2005), rice (Sampedro et al, 2005; Che et al, 2016), maize (Zhang et al, 2014), soybean (Zhu et al, 2014), wheat (Li et al, 2016), and peanut (Guimaraes et al, 2017). Protein structural and genome-wide studies have revealed that expansins comprise four subfamilies (Cosgrove, 2015): α-expansin (EXPA), β-expansin (EXPB), expansin-like A (EXLA), and expansin-like B (EXLB).…”

Section: Introductionmentioning

confidence: 99%

GmEXLB1, a Soybean Expansin-Like B Gene, Alters Root Architecture to Improve Phosphorus Acquisition in Arabidopsis

Kong

Wang

et al. 2019

Front. Plant Sci.

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Expansins comprise four subfamilies, α-expansin (EXPA), β-expansin (EXPB), expansin-like A (EXLA), and expansin-like B (EXLB), which are involved in the regulation of root development and growth under abiotic stress. To date, few EXLB genes have been shown to respond to low phosphorus (P) in plants. In this study, we identified an EXLB gene, GmEXLB1 , by analyzing the transcription profiles of GmEXLBs in soybean. Quantitative analysis showed that GmEXLB1 was expressed and induced in the lateral roots of soybean under low P conditions. The observation of β-glucuronidase staining in transgenic Arabidopsis suggested that GmEXLB1 might be associated with lateral root emergence. GmEXLB1 overexpression altered the root architecture of transgenic Arabidopsis by increasing the number and length of lateral roots and the length of primary roots under low P conditions. Additionally, the length of the elongation zone and the average cell length in the elongation zone were increased in transgenic Arabidopsis . Increases in biomass and P content suggested that GmEXLB1 overexpression enhanced P acquisition in Arabidopsis . Overall, we conclude that GmEXLB1 expression is induced in soybean under low P conditions, and the overexpression of GmEXLB1 improves P acquisition by regulating root elongation and architecture in Arabidopsis , which provides a possible direction for research of the function of this gene in soybean.

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Section: Introductionmentioning

confidence: 99%

GmEXLB1, a Soybean Expansin-Like B Gene, Alters Root Architecture to Improve Phosphorus Acquisition in Arabidopsis

Kong

Wang

et al. 2019

Front. Plant Sci.

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“…& Nakai etc. (28)(29)(30)(31)(32)(33)(34)(51)(52)(53)(54)(55)(56)(57)(58). However, no systematic and thorough study of the expansin gene family was carried out earlier in tea.…”

Section: Discussionmentioning

confidence: 99%

“…In a similar way, ectopical expression of RhEXPA4 in transgenic Arabidopsis increased survival rate of the plants under drought stress (26). Although expansins have been characterized in many plant species, such as Arabidopsis (27), rice (27), maize (28), wheat (29), soybean (30), tobacco (31), tomato (32), apple (33) and grape (34), the features and functions of expansin gene family in tea are unexplored. Considering the importance of expansins in mediating drought tolerance in crops, a genome wide survey of tea expansins was conducted and expression profiling of expansin genes during drought stress in tea using publicly available data was carried out.…”

Section: Introductionmentioning

confidence: 98%

Genome-wide identification, characterization and expression analysis of the expansin gene family under drought stress in tea (Camellia sinensis L.)

et al. 2021

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During several developmental processes, expansins contribute to cell enlargement by promoting cell wall loosening. To explore the biological roles of expansins during drought stress response and to characterize different expansins in tea, we performed a detailed analysis of the expansin gene family covering phylogeny, gene structure, profiling of gene expression and co-expression network analysis. We identified a total of 40 expansin genes in the tea genome belonging to 3 subfamilies, out of which 29 tea expansins belong to EXPA, 9 to EXLA and 2 to EXPB subfamilies. A minimum of 3 and a maximum of 13 exons are present in the gene structure of expansins. Presence of drought stress responsive cis-acting elements in the upstream of promoter regions of 40% of the identified expansins shows that the putative expansins may have been involved in tea plant’s response to drought stress. At least 15 out of the 40 expansin genes are found to be differentially expressed in response to drought in each of the drought stress related public datasets analysed in-silico. TEA022767 belonging to EXPA subfamily is seen to be upregulated during drought stress, as revealed from the analysis of all three publicly available bio-projects. Co-expression network analysis shows that TEA022767 and TEA032954 form a connecting link between two expression correlation groups that further signifies their role in drought stress response in tea. This study helps to interpret and to understand the biological roles of diverse expansin genes in tea plants under drought stress conditions.

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“…Of the all expansin genes in plant genome, the proportion of EXPB subfamily members was small in several dicots species (ranging from 8.57% to 16.67%), while that in monocots was relatively high such as 32.76% in rice and 54.55% in maize (Li et al, 2016). Considering of the mechanism, the expansins could bind then break the covalent bonding between cellulose and hemicellulose in cell wall, and finally loosen cell wall components (Cosgrove, 2015).…”

Section: Discussionmentioning

confidence: 99%

Identification and Evaluation of the Expansin Genes in <i>Salix purpurea</i> Genome

Yang¹,

Liu²,

Lan³

et al. 2020

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Expansin is an indispensable cell wall protein, involved in plant growth and resistance to stress. Based on the sequencing genome data, a total of 34 expansin genes were identified on 14 chromosomes in Salix purpurea, which were grouped into 4 subfamilies. The analysis of the physicochemical properties showed that most expansin proteins were in weakly alkaline, had a higher aliphatic index and more stable protein structure. The gene sequence was more conservative among the members in the same subfamily with the amino acid identity between 34.2% and 99.4%, while that was between 15.0% and 39.8% among the members in the different subfamilies. Also, the same subfamily genes had similar exon-intron structures, but the different subfamily genes showed that much differently. The codon usage analysis revealed that there are 5 high-frequency codons in Salix purpurea expansin genes. The codon usage bias was much affected by natural selection. The synteny analysis showed that the expansin genes divided in corresponce to whole-genome duplication events in willow. The results here would help us to understand well the role and status of expansin genes in the growth and development of Salix purpurea. It will be helpful for further study on the expansins functions.

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Genomic location and expression analysis of expansin gene family reveals the evolutionary and functional significance in Triticum aestivum

Cited by 14 publications

References 59 publications

GmEXLB1, a Soybean Expansin-Like B Gene, Alters Root Architecture to Improve Phosphorus Acquisition in Arabidopsis

GmEXLB1, a Soybean Expansin-Like B Gene, Alters Root Architecture to Improve Phosphorus Acquisition in Arabidopsis

Genome-wide identification, characterization and expression analysis of the expansin gene family under drought stress in tea (Camellia sinensis L.)

Identification and Evaluation of the Expansin Genes in <i>Salix purpurea</i> Genome

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